--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java Thu Sep 25 16:21:54 2014 -0700
@@ -107,7 +107,6 @@
private Runtime1 runtime1;
/** These constants come from globalDefinitions.hpp */
private int invocationEntryBCI;
- private int invalidOSREntryBCI;
private ReversePtrs revPtrs;
private VMRegImpl vmregImpl;
private int reserveForAllocationPrefetch;
@@ -295,7 +294,6 @@
stackBias = db.lookupIntConstant("STACK_BIAS").intValue();
invocationEntryBCI = db.lookupIntConstant("InvocationEntryBci").intValue();
- invalidOSREntryBCI = db.lookupIntConstant("InvalidOSREntryBci").intValue();
// We infer the presence of C1 or C2 from a couple of fields we
// already have present in the type database
@@ -733,11 +731,6 @@
return invocationEntryBCI;
}
- /** FIXME: figure out where to stick this */
- public int getInvalidOSREntryBCI() {
- return invalidOSREntryBCI;
- }
-
// FIXME: figure out where to stick this
public boolean wizardMode() {
return true;
--- a/hotspot/make/aix/makefiles/adlc.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/aix/makefiles/adlc.make Thu Sep 25 16:21:54 2014 -0700
@@ -106,7 +106,7 @@
all: $(EXEC)
$(EXEC) : $(OBJECTS)
- @echo Making adlc
+ @echo $(LOG_INFO) Making adlc
$(QUIETLY) $(HOST.LINK_NOPROF.CXX) -o $(EXEC) $(OBJECTS)
# Random dependencies:
@@ -189,7 +189,7 @@
$(QUIETLY) ./$(ADLC_UPDATER) adGlobals_$(Platform_arch_model).hpp $(TEMPDIR) $(OUTDIR)
$(QUIETLY) ./$(ADLC_UPDATER) dfa_$(Platform_arch_model).cpp $(TEMPDIR) $(OUTDIR)
$(QUIETLY) [ -f $(TEMPDIR)/made-change ] \
- || echo "Rescanned $(SOURCE.AD) but encountered no changes."
+ || echo $(LOG_INFO) "Rescanned $(SOURCE.AD) but encountered no changes."
$(QUIETLY) rm -rf $(TEMPDIR)
@@ -207,14 +207,14 @@
print }'
$(OUTDIR)/%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(HOST.COMPILE.CXX) -o $@ $< $(COMPILE_DONE)
# Some object files are given a prefix, to disambiguate
# them from objects of the same name built for the VM.
$(OUTDIR)/adlc-%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(HOST.COMPILE.CXX) -o $@ $< $(COMPILE_DONE)
--- a/hotspot/make/aix/makefiles/buildtree.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/aix/makefiles/buildtree.make Thu Sep 25 16:21:54 2014 -0700
@@ -195,7 +195,7 @@
DATA_MODE = $(DATA_MODE/$(BUILDARCH))
flags.make: $(BUILDTREE_MAKE) ../shared_dirs.lst
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -282,7 +282,7 @@
) > $@
flags_vm.make: $(BUILDTREE_MAKE) ../shared_dirs.lst
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -290,7 +290,7 @@
) > $@
../shared_dirs.lst: $(BUILDTREE_MAKE) $(GAMMADIR)/src/share/vm
- @echo Creating directory list $@
+ @echo $(LOG_INFO) Creating directory list $@
$(QUIETLY) if [ -d $(HS_ALT_SRC)/share/vm ]; then \
find $(HS_ALT_SRC)/share/vm/* -prune \
-type d \! \( $(TOPLEVEL_EXCLUDE_DIRS) \) -exec find {} \
@@ -301,7 +301,7 @@
\( $(ALWAYS_EXCLUDE_DIRS) \) -prune -o -type d -print \; >> $@
Makefile: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -311,7 +311,7 @@
) > $@
vm.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -322,7 +322,7 @@
) > $@
adlc.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -332,7 +332,7 @@
) > $@
jvmti.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -342,7 +342,7 @@
) > $@
trace.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -352,7 +352,7 @@
) > $@
sa.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
--- a/hotspot/make/aix/makefiles/defs.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/aix/makefiles/defs.make Thu Sep 25 16:21:54 2014 -0700
@@ -29,6 +29,12 @@
SLASH_JAVA ?= /java
+define print_info
+ ifneq ($$(LOG_LEVEL), warn)
+ $$(shell echo >&2 "INFO: $1")
+ endif
+endef
+
# Need PLATFORM (os-arch combo names) for jdk and hotspot, plus libarch name
#ARCH:=$(shell uname -m)
PATH_SEP = :
@@ -122,8 +128,7 @@
# debug variants always get Full Debug Symbols (if available)
ENABLE_FULL_DEBUG_SYMBOLS = 1
endif
- _JUNK_ := $(shell \
- echo >&2 "INFO: ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)")
+ $(eval $(call print_info, "ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)"))
# since objcopy is optional, we set ZIP_DEBUGINFO_FILES later
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
@@ -138,19 +143,16 @@
endif
OBJCOPY=$(shell test -x $(DEF_OBJCOPY) && echo $(DEF_OBJCOPY))
ifneq ($(ALT_OBJCOPY),)
- _JUNK_ := $(shell echo >&2 "INFO: ALT_OBJCOPY=$(ALT_OBJCOPY)")
+ $(eval $(call print_info, "ALT_OBJCOPY=$(ALT_OBJCOPY)"))
OBJCOPY=$(shell test -x $(ALT_OBJCOPY) && echo $(ALT_OBJCOPY))
endif
ifeq ($(OBJCOPY),)
- _JUNK_ := $(shell \
- echo >&2 "INFO: no objcopy cmd found so cannot create .debuginfo files. You may need to set ALT_OBJCOPY.")
+ $(eval $(call print_info, "no objcopy cmd found so cannot create .debuginfo files. You may need to set ALT_OBJCOPY."))
ENABLE_FULL_DEBUG_SYMBOLS=0
- _JUNK_ := $(shell \
- echo >&2 "INFO: ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)")
+ $(eval $(call print_info, "ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)"))
else
- _JUNK_ := $(shell \
- echo >&2 "INFO: $(OBJCOPY) cmd found so will create .debuginfo files.")
+ $(eval $(call print_info, "$(OBJCOPY) cmd found so will create .debuginfo files."))
# Library stripping policies for .debuginfo configs:
# all_strip - strips everything from the library
@@ -164,13 +166,11 @@
#
STRIP_POLICY ?= min_strip
- _JUNK_ := $(shell \
- echo >&2 "INFO: STRIP_POLICY=$(STRIP_POLICY)")
+ $(eval $(call print_info, "STRIP_POLICY=$(STRIP_POLICY)"))
ZIP_DEBUGINFO_FILES ?= 1
- _JUNK_ := $(shell \
- echo >&2 "INFO: ZIP_DEBUGINFO_FILES=$(ZIP_DEBUGINFO_FILES)")
+ $(eval $(call print_info, "ZIP_DEBUGINFO_FILES=$(ZIP_DEBUGINFO_FILES)"))
endif
endif # ENABLE_FULL_DEBUG_SYMBOLS=1
endif # BUILD_FLAVOR
@@ -227,5 +227,3 @@
ADD_SA_BINARIES/zero =
EXPORT_LIST += $(ADD_SA_BINARIES/$(HS_ARCH))
-
-
--- a/hotspot/make/aix/makefiles/jsig.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/aix/makefiles/jsig.make Thu Sep 25 16:21:54 2014 -0700
@@ -55,7 +55,7 @@
endif
$(LIBJSIG): $(JSIGSRCDIR)/jsig.c $(LIBJSIG_MAPFILE)
- @echo Making signal interposition lib...
+ @echo $(LOG_INFO) Making signal interposition lib...
$(QUIETLY) $(CXX) $(SYMFLAG) $(ARCHFLAG) $(SHARED_FLAG) $(PICFLAG) \
$(LFLAGS_JSIG) $(JSIG_DEBUG_CFLAGS) -o $@ $< -ldl
--- a/hotspot/make/aix/makefiles/jvmti.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/aix/makefiles/jvmti.make Thu Sep 25 16:21:54 2014 -0700
@@ -76,34 +76,34 @@
$(QUIETLY) $(REMOTE) $(COMPILE.JAVAC) -d $(JvmtiOutDir) $(JvmtiEnvFillSource)
$(JvmtiOutDir)/jvmtiEnter.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnter.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnter.xsl -OUT $(JvmtiOutDir)/jvmtiEnter.cpp -PARAM interface jvmti
$(JvmtiOutDir)/bytecodeInterpreterWithChecks.cpp: $(JvmtiGenClass) $(InterpreterSrcDir)/bytecodeInterpreter.cpp $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xml $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xml -XSL $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xsl -OUT $(JvmtiOutDir)/bytecodeInterpreterWithChecks.cpp
$(JvmtiOutDir)/jvmtiEnterTrace.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnter.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnter.xsl -OUT $(JvmtiOutDir)/jvmtiEnterTrace.cpp -PARAM interface jvmti -PARAM trace Trace
$(JvmtiOutDir)/jvmtiEnvRecommended.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnv.xsl $(JvmtiSrcDir)/jvmtiEnv.cpp $(JvmtiEnvFillClass)
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnv.xsl -OUT $(JvmtiOutDir)/jvmtiEnvStub.cpp
$(QUIETLY) $(REMOTE) $(RUN.JAVA) -classpath $(JvmtiOutDir) jvmtiEnvFill $(JvmtiSrcDir)/jvmtiEnv.cpp $(JvmtiOutDir)/jvmtiEnvStub.cpp $(JvmtiOutDir)/jvmtiEnvRecommended.cpp
$(JvmtiOutDir)/jvmtiEnv.hpp: $(both) $(JvmtiSrcDir)/jvmtiHpp.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiHpp.xsl -OUT $(JvmtiOutDir)/jvmtiEnv.hpp
$(JvmtiOutDir)/jvmti.h: $(both) $(JvmtiSrcDir)/jvmtiH.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiH.xsl -OUT $(JvmtiOutDir)/jvmti.h
jvmtidocs: $(JvmtiOutDir)/jvmti.html
$(JvmtiOutDir)/jvmti.html: $(both) $(JvmtiSrcDir)/jvmti.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmti.xsl -OUT $(JvmtiOutDir)/jvmti.html
# #########################################################################
@@ -115,4 +115,3 @@
rm $(JvmtiGenClass) $(JvmtiEnvFillClass) $(JvmtiGeneratedFiles)
# #########################################################################
-
--- a/hotspot/make/aix/makefiles/rules.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/aix/makefiles/rules.make Thu Sep 25 16:21:54 2014 -0700
@@ -146,12 +146,12 @@
# The non-PIC object files are only generated for 32 bit platforms.
ifdef LP64
%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(COMPILE.CXX) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE)
else
%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(if $(findstring $@, $(NONPIC_OBJ_FILES)), \
$(subst $(VM_PICFLAG), ,$(COMPILE.CXX)) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE), \
@@ -159,18 +159,18 @@
endif
%.o: %.s
- @echo Assembling $<
+ @echo $(LOG_INFO) Assembling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(AS.S) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE)
%.s: %.cpp
- @echo Generating assembly for $<
+ @echo $(LOG_INFO) Generating assembly for $<
$(QUIETLY) $(GENASM.CXX) -o $@ $<
$(QUIETLY) $(DEMANGLE) $(COMPILE_DONE)
# Intermediate files (for debugging macros)
%.i: %.cpp
- @echo Preprocessing $< to $@
+ @echo $(LOG_INFO) Preprocessing $< to $@
$(QUIETLY) $(PREPROCESS.CXX) $< > $@ $(COMPILE_DONE)
# Override gnumake built-in rules which do sccs get operations badly.
--- a/hotspot/make/aix/makefiles/sa.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/aix/makefiles/sa.make Thu Sep 25 16:21:54 2014 -0700
@@ -66,7 +66,7 @@
fi
$(GENERATED)/sa-jdi.jar: $(AGENT_FILES)
- $(QUIETLY) echo "Making $@"
+ $(QUIETLY) echo $(LOG_INFO) "Making $@"
$(QUIETLY) if [ "$(BOOT_JAVA_HOME)" = "" ]; then \
echo "ALT_BOOTDIR, BOOTDIR or JAVA_HOME needs to be defined to build SA"; \
exit 1; \
--- a/hotspot/make/aix/makefiles/saproc.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/aix/makefiles/saproc.make Thu Sep 25 16:21:54 2014 -0700
@@ -73,7 +73,7 @@
echo "ALT_BOOTDIR, BOOTDIR or JAVA_HOME needs to be defined to build SA"; \
exit 1; \
fi
- @echo Making SA debugger back-end...
+ @echo $(LOG_INFO) Making SA debugger back-end...
$(QUIETLY) $(CC) -D$(BUILDARCH) -D_GNU_SOURCE \
-D_FILE_OFFSET_BITS=64 \
$(SYMFLAG) $(ARCHFLAG) $(SHARED_FLAG) $(PICFLAG) \
--- a/hotspot/make/aix/makefiles/trace.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/aix/makefiles/trace.make Thu Sep 25 16:21:54 2014 -0700
@@ -81,7 +81,7 @@
all: $(TraceGeneratedFiles)
GENERATE_CODE= \
- $(QUIETLY) echo Generating $@; \
+ $(QUIETLY) echo $(LOG_INFO) Generating $@; \
$(XSLT) -IN $(word 1,$^) -XSL $(word 2,$^) -OUT $@; \
test -f $@
@@ -116,5 +116,3 @@
clean cleanall:
rm $(TraceGeneratedFiles)
-
-
--- a/hotspot/make/aix/makefiles/vm.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/aix/makefiles/vm.make Thu Sep 25 16:21:54 2014 -0700
@@ -269,7 +269,7 @@
# rule for building precompiled header
$(PRECOMPILED_HEADER):
- $(QUIETLY) echo Generating precompiled header $@
+ $(QUIETLY) echo $(LOG_INFO) Generating precompiled header $@
$(QUIETLY) mkdir -p $(PRECOMPILED_HEADER_DIR)
$(QUIETLY) $(COMPILE.CXX) $(DEPFLAGS) -x c++-header $(PRECOMPILED_HEADER_SRC) -o $@ $(COMPILE_DONE)
@@ -300,7 +300,7 @@
# details in bug 6538311.
$(LIBJVM): $(LIBJVM.o) $(LIBJVM_MAPFILE) $(LD_SCRIPT)
$(QUIETLY) { \
- echo Linking vm...; \
+ echo $(LOG_INFO) Linking vm...; \
$(LINK_LIB.CXX/PRE_HOOK) \
$(LINK_VM) $(LD_SCRIPT_FLAG) \
$(LFLAGS_VM) -o $@ $(sort $(LIBJVM.o)) $(LIBS_VM); \
--- a/hotspot/make/bsd/makefiles/adlc.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/bsd/makefiles/adlc.make Thu Sep 25 16:21:54 2014 -0700
@@ -108,7 +108,7 @@
all: $(EXEC)
$(EXEC) : $(OBJECTS)
- @echo Making adlc
+ @echo $(LOG_INFO) Making adlc
$(QUIETLY) $(HOST.LINK_NOPROF.CXX) -o $(EXEC) $(OBJECTS)
# Random dependencies:
@@ -191,7 +191,7 @@
$(QUIETLY) ./$(ADLC_UPDATER) adGlobals_$(Platform_arch_model).hpp $(TEMPDIR) $(OUTDIR)
$(QUIETLY) ./$(ADLC_UPDATER) dfa_$(Platform_arch_model).cpp $(TEMPDIR) $(OUTDIR)
$(QUIETLY) [ -f $(TEMPDIR)/made-change ] \
- || echo "Rescanned $(SOURCE.AD) but encountered no changes."
+ || echo $(LOG_INFO) "Rescanned $(SOURCE.AD) but encountered no changes."
$(QUIETLY) rm -rf $(TEMPDIR)
@@ -209,14 +209,14 @@
print }'
$(OUTDIR)/%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(HOST.COMPILE.CXX) -o $@ $< $(COMPILE_DONE)
# Some object files are given a prefix, to disambiguate
# them from objects of the same name built for the VM.
$(OUTDIR)/adlc-%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(HOST.COMPILE.CXX) -o $@ $< $(COMPILE_DONE)
--- a/hotspot/make/bsd/makefiles/buildtree.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/bsd/makefiles/buildtree.make Thu Sep 25 16:21:54 2014 -0700
@@ -201,7 +201,7 @@
DATA_MODE = $(DATA_MODE/$(BUILDARCH))
flags.make: $(BUILDTREE_MAKE) ../shared_dirs.lst
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -286,7 +286,7 @@
) > $@
flags_vm.make: $(BUILDTREE_MAKE) ../shared_dirs.lst
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -294,7 +294,7 @@
) > $@
../shared_dirs.lst: $(BUILDTREE_MAKE) $(GAMMADIR)/src/share/vm
- @echo Creating directory list $@
+ @echo $(LOG_INFO) Creating directory list $@
$(QUIETLY) if [ -d $(HS_ALT_SRC)/share/vm ]; then \
find $(HS_ALT_SRC)/share/vm/* -prune \
-type d \! \( $(TOPLEVEL_EXCLUDE_DIRS) \) -exec find {} \
@@ -305,7 +305,7 @@
\( $(ALWAYS_EXCLUDE_DIRS) \) -prune -o -type d -print \; >> $@
Makefile: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -315,7 +315,7 @@
) > $@
vm.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -326,7 +326,7 @@
) > $@
adlc.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -336,7 +336,7 @@
) > $@
jvmti.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -346,7 +346,7 @@
) > $@
trace.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -356,7 +356,7 @@
) > $@
sa.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -366,7 +366,7 @@
) > $@
dtrace.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
--- a/hotspot/make/bsd/makefiles/defs.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/bsd/makefiles/defs.make Thu Sep 25 16:21:54 2014 -0700
@@ -28,6 +28,12 @@
SLASH_JAVA ?= /java
+define print_info
+ ifneq ($$(LOG_LEVEL), warn)
+ $$(shell echo >&2 "INFO: $1")
+ endif
+endef
+
# Need PLATFORM (os-arch combo names) for jdk and hotspot, plus libarch name
ARCH:=$(shell uname -m)
PATH_SEP = :
@@ -187,8 +193,7 @@
# debug variants always get Full Debug Symbols (if available)
ENABLE_FULL_DEBUG_SYMBOLS = 1
endif
- _JUNK_ := $(shell \
- echo >&2 "INFO: ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)")
+ $(eval $(call print_info, "ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)"))
# since objcopy is optional, we set ZIP_DEBUGINFO_FILES later
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
@@ -209,22 +214,18 @@
endif
OBJCOPY=$(shell test -x $(DEF_OBJCOPY) && echo $(DEF_OBJCOPY))
ifneq ($(ALT_OBJCOPY),)
- _JUNK_ := $(shell echo >&2 "INFO: ALT_OBJCOPY=$(ALT_OBJCOPY)")
+ $(eval $(call print_info, "ALT_OBJCOPY=$(ALT_OBJCOPY)"))
OBJCOPY=$(shell test -x $(ALT_OBJCOPY) && echo $(ALT_OBJCOPY))
endif
ifeq ($(OBJCOPY),)
- _JUNK_ := $(shell \
- echo >&2 "INFO: no objcopy cmd found so cannot create .debuginfo" \
- "files. You may need to set ALT_OBJCOPY.")
+ $(eval $(call print_info, "no objcopy cmd found so cannot create .debuginfo" \
+ "files. You may need to set ALT_OBJCOPY."))
ENABLE_FULL_DEBUG_SYMBOLS=0
- _JUNK_ := $(shell \
- echo >&2 "INFO:" \
- "ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)")
+ $(eval $(call print_info, "ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)"))
else
- _JUNK_ := $(shell \
- echo >&2 "INFO: $(OBJCOPY) cmd found so will create .debuginfo" \
- "files.")
+ $(eval $(call print_info, "$(OBJCOPY) cmd found so will create .debuginfo" \
+ "files."))
# Library stripping policies for .debuginfo configs:
# all_strip - strips everything from the library
@@ -241,14 +242,12 @@
#
STRIP_POLICY ?= min_strip
- _JUNK_ := $(shell \
- echo >&2 "INFO: STRIP_POLICY=$(STRIP_POLICY)")
+ $(eval $(call print_info, "STRIP_POLICY=$(STRIP_POLICY)"))
ZIP_DEBUGINFO_FILES ?= 1
endif
- _JUNK_ := $(shell \
- echo >&2 "INFO: ZIP_DEBUGINFO_FILES=$(ZIP_DEBUGINFO_FILES)")
+ $(eval $(call print_info, "ZIP_DEBUGINFO_FILES=$(ZIP_DEBUGINFO_FILES)"))
endif
endif # ENABLE_FULL_DEBUG_SYMBOLS=1
endif # BUILD_FLAVOR
--- a/hotspot/make/bsd/makefiles/dtrace.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/bsd/makefiles/dtrace.make Thu Sep 25 16:21:54 2014 -0700
@@ -92,7 +92,7 @@
XLIBJVM_DTRACE_DIZ = $(XLIBJVM_DIR)/$(LIBJVM_DTRACE_DIZ)
$(XLIBJVM_DB): $(DTRACE_SRCDIR)/$(JVM_DB).c $(JVMOFFS).h $(LIBJVM_DB_MAPFILE)
- @echo Making $@
+ @echo $(LOG_INFO) Making $@
$(QUIETLY) mkdir -p $(XLIBJVM_DIR) ; \
$(CC) $(SYMFLAG) -xarch=$(XARCH) -D$(TYPE) -I. -I$(GENERATED) \
$(SHARED_FLAG) $(LFLAGS_JVM_DB) -o $@ $(DTRACE_SRCDIR)/$(JVM_DB).c #-lc
@@ -128,7 +128,7 @@
endif
$(XLIBJVM_DTRACE): $(DTRACE_SRCDIR)/$(JVM_DTRACE).c $(DTRACE_SRCDIR)/$(JVM_DTRACE).h $(LIBJVM_DTRACE_MAPFILE)
- @echo Making $@
+ @echo $(LOG_INFO) Making $@
$(QUIETLY) mkdir -p $(XLIBJVM_DIR) ; \
$(CC) $(SYMFLAG) -xarch=$(XARCH) -D$(TYPE) -I. \
$(SHARED_FLAG) $(LFLAGS_JVM_DTRACE) -o $@ $(DTRACE_SRCDIR)/$(JVM_DTRACE).c #-lc -lthread -ldoor
@@ -202,7 +202,7 @@
$(QUIETLY) $(CXX) -c -I. -o $@ $(ARCHFLAG) -D$(TYPE) $(JVMOFFS).cpp
$(LIBJVM_DB): $(DTRACE_SRCDIR)/$(JVM_DB).c $(JVMOFFS.o) $(XLIBJVM_DB) $(LIBJVM_DB_MAPFILE)
- @echo Making $@
+ @echo $(LOG_INFO) Making $@
$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) -D$(TYPE) -I. -I$(GENERATED) \
$(SHARED_FLAG) $(LFLAGS_JVM_DB) -o $@ $(DTRACE_SRCDIR)/$(JVM_DB).c -Wall # -lc
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
@@ -231,7 +231,7 @@
endif
$(LIBJVM_DTRACE): $(DTRACE_SRCDIR)/$(JVM_DTRACE).c $(XLIBJVM_DTRACE) $(DTRACE_SRCDIR)/$(JVM_DTRACE).h $(LIBJVM_DTRACE_MAPFILE)
- @echo Making $@
+ @echo $(LOG_INFO) Making $@
$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) -D$(TYPE) -I. \
$(SHARED_FLAG) $(LFLAGS_JVM_DTRACE) -o $@ $(DTRACE_SRCDIR)/$(JVM_DTRACE).c #-lc -lthread -ldoor
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
@@ -296,13 +296,13 @@
dtraceCheck:
dtrace_stuff: dtrace_gen_headers
- $(QUIETLY) echo "dtrace headers generated"
+ $(QUIETLY) echo $(LOG_INFO) "dtrace headers generated"
else # manually disabled
dtraceCheck:
- $(QUIETLY) echo "**NOTICE** Dtrace support disabled via environment variable"
+ $(QUIETLY) echo $(LOG_INFO) "**NOTICE** Dtrace support disabled via environment variable"
dtrace_stuff:
@@ -311,7 +311,7 @@
else # No dtrace program found
dtraceCheck:
- $(QUIETLY) echo "**NOTICE** Dtrace support disabled: not supported by system"
+ $(QUIETLY) echo $(LOG_INFO) "**NOTICE** Dtrace support disabled: not supported by system"
dtrace_stuff:
@@ -323,6 +323,6 @@
else # CORE build
dtraceCheck:
- $(QUIETLY) echo "**NOTICE** Dtrace support disabled for CORE builds"
+ $(QUIETLY) echo $(LOG_INFO) "**NOTICE** Dtrace support disabled for CORE builds"
endif # ifneq ("${TYPE}", "CORE")
--- a/hotspot/make/bsd/makefiles/jsig.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/bsd/makefiles/jsig.make Thu Sep 25 16:21:54 2014 -0700
@@ -60,7 +60,7 @@
endif
$(LIBJSIG): $(JSIGSRCDIR)/jsig.c $(LIBJSIG_MAPFILE)
- @echo Making signal interposition lib...
+ @echo $(LOG_INFO) Making signal interposition lib...
$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) $(SHARED_FLAG) $(PICFLAG) \
$(LFLAGS_JSIG) $(JSIG_DEBUG_CFLAGS) -o $@ $<
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
--- a/hotspot/make/bsd/makefiles/jvmti.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/bsd/makefiles/jvmti.make Thu Sep 25 16:21:54 2014 -0700
@@ -75,34 +75,34 @@
$(QUIETLY) $(REMOTE) $(COMPILE.JAVAC) -d $(JvmtiOutDir) $(JvmtiEnvFillSource)
$(JvmtiOutDir)/jvmtiEnter.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnter.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnter.xsl -OUT $(JvmtiOutDir)/jvmtiEnter.cpp -PARAM interface jvmti
$(JvmtiOutDir)/bytecodeInterpreterWithChecks.cpp: $(JvmtiGenClass) $(InterpreterSrcDir)/bytecodeInterpreter.cpp $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xml $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xml -XSL $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xsl -OUT $(JvmtiOutDir)/bytecodeInterpreterWithChecks.cpp
$(JvmtiOutDir)/jvmtiEnterTrace.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnter.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnter.xsl -OUT $(JvmtiOutDir)/jvmtiEnterTrace.cpp -PARAM interface jvmti -PARAM trace Trace
$(JvmtiOutDir)/jvmtiEnvRecommended.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnv.xsl $(JvmtiSrcDir)/jvmtiEnv.cpp $(JvmtiEnvFillClass)
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnv.xsl -OUT $(JvmtiOutDir)/jvmtiEnvStub.cpp
$(QUIETLY) $(REMOTE) $(RUN.JAVA) -classpath $(JvmtiOutDir) jvmtiEnvFill $(JvmtiSrcDir)/jvmtiEnv.cpp $(JvmtiOutDir)/jvmtiEnvStub.cpp $(JvmtiOutDir)/jvmtiEnvRecommended.cpp
$(JvmtiOutDir)/jvmtiEnv.hpp: $(both) $(JvmtiSrcDir)/jvmtiHpp.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiHpp.xsl -OUT $(JvmtiOutDir)/jvmtiEnv.hpp
$(JvmtiOutDir)/jvmti.h: $(both) $(JvmtiSrcDir)/jvmtiH.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiH.xsl -OUT $(JvmtiOutDir)/jvmti.h
jvmtidocs: $(JvmtiOutDir)/jvmti.html
$(JvmtiOutDir)/jvmti.html: $(both) $(JvmtiSrcDir)/jvmti.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmti.xsl -OUT $(JvmtiOutDir)/jvmti.html
# #########################################################################
@@ -114,4 +114,3 @@
rm $(JvmtiGenClass) $(JvmtiEnvFillClass) $(JvmtiGeneratedFiles)
# #########################################################################
-
--- a/hotspot/make/bsd/makefiles/rules.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/bsd/makefiles/rules.make Thu Sep 25 16:21:54 2014 -0700
@@ -146,12 +146,12 @@
# The non-PIC object files are only generated for 32 bit platforms.
ifdef LP64
%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(COMPILE.CXX) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE)
else
%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(if $(findstring $@, $(NONPIC_OBJ_FILES)), \
$(subst $(VM_PICFLAG), ,$(COMPILE.CXX)) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE), \
@@ -159,18 +159,18 @@
endif
%.o: %.s
- @echo Assembling $<
+ @echo $(LOG_INFO) Assembling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(AS.S) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE)
%.s: %.cpp
- @echo Generating assembly for $<
+ @echo $(LOG_INFO) Generating assembly for $<
$(QUIETLY) $(GENASM.CXX) -o $@ $<
$(QUIETLY) $(DEMANGLE) $(COMPILE_DONE)
# Intermediate files (for debugging macros)
%.i: %.cpp
- @echo Preprocessing $< to $@
+ @echo $(LOG_INFO) Preprocessing $< to $@
$(QUIETLY) $(PREPROCESS.CXX) $< > $@ $(COMPILE_DONE)
# Override gnumake built-in rules which do sccs get operations badly.
--- a/hotspot/make/bsd/makefiles/sa.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/bsd/makefiles/sa.make Thu Sep 25 16:21:54 2014 -0700
@@ -25,6 +25,12 @@
# This makefile (sa.make) is included from the sa.make in the
# build directories.
+define print_info
+ ifneq ($$(LOG_LEVEL), warn)
+ $$(shell echo >&2 "INFO: $1")
+ endif
+endef
+
# This makefile is used to build Serviceability Agent java code
# and generate JNI header file for native methods.
@@ -53,7 +59,7 @@
endif
endif
else
- _JUNK_ := $(shell echo >&2 "INFO: ALT_SA_CLASSPATH=$(ALT_SA_CLASSPATH)")
+ $(eval $(call print_info, "ALT_SA_CLASSPATH=$(ALT_SA_CLASSPATH)"))
SA_CLASSPATH=$(shell test -f $(ALT_SA_CLASSPATH) && echo $(ALT_SA_CLASSPATH))
endif
@@ -80,7 +86,7 @@
fi
$(GENERATED)/sa-jdi.jar: $(AGENT_FILES)
- $(QUIETLY) echo "Making $@"
+ $(QUIETLY) echo $(LOG_INFO) "Making $@"
$(QUIETLY) if [ "$(BOOT_JAVA_HOME)" = "" ]; then \
echo "ALT_BOOTDIR, BOOTDIR or JAVA_HOME needs to be defined to build SA"; \
exit 1; \
--- a/hotspot/make/bsd/makefiles/saproc.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/bsd/makefiles/saproc.make Thu Sep 25 16:21:54 2014 -0700
@@ -122,7 +122,7 @@
echo "ALT_BOOTDIR, BOOTDIR or JAVA_HOME needs to be defined to build SA"; \
exit 1; \
fi
- @echo Making SA debugger back-end...
+ @echo $(LOG_INFO) Making SA debugger back-end...
$(QUIETLY) $(CC) -D$(BUILDARCH) -D_GNU_SOURCE \
$(SA_SYSROOT_FLAGS) \
$(SYMFLAG) $(SAARCH) $(SHARED_FLAG) $(PICFLAG) \
--- a/hotspot/make/bsd/makefiles/trace.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/bsd/makefiles/trace.make Thu Sep 25 16:21:54 2014 -0700
@@ -82,7 +82,7 @@
all: $(TraceGeneratedFiles)
GENERATE_CODE= \
- $(QUIETLY) echo Generating $@; \
+ $(QUIETLY) echo $(LOG_INFO) Generating $@; \
$(XSLT) -IN $(word 1,$^) -XSL $(word 2,$^) -OUT $@; \
test -f $@
@@ -118,4 +118,3 @@
clean cleanall:
rm $(TraceGeneratedFiles)
-
--- a/hotspot/make/bsd/makefiles/vm.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/bsd/makefiles/vm.make Thu Sep 25 16:21:54 2014 -0700
@@ -291,7 +291,7 @@
# rule for building precompiled header
$(PRECOMPILED_HEADER):
- $(QUIETLY) echo Generating precompiled header $@
+ $(QUIETLY) echo $(LOG_INFO) Generating precompiled header $@
$(QUIETLY) mkdir -p $(PRECOMPILED_HEADER_DIR)
$(QUIETLY) rm -f $@
$(QUIETLY) $(COMPILE.CXX) $(DEPFLAGS) -x c++-header $(PRECOMPILED_HEADER_SRC) -o $@ $(COMPILE_DONE)
@@ -318,7 +318,7 @@
$(LIBJVM): $(LIBJVM.o) $(LIBJVM_MAPFILE) $(LD_SCRIPT)
$(QUIETLY) { \
- echo Linking vm...; \
+ echo $(LOG_INFO) Linking vm...; \
$(LINK_LIB.CXX/PRE_HOOK) \
$(LINK_VM) $(LD_SCRIPT_FLAG) \
$(LFLAGS_VM) -o $@ $(sort $(LIBJVM.o)) $(LIBS_VM); \
--- a/hotspot/make/defs.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/defs.make Thu Sep 25 16:21:54 2014 -0700
@@ -29,6 +29,12 @@
include $(SPEC)
endif
+ifeq ($(LOG_LEVEL),warn)
+ LOG_INFO := > /dev/null
+else
+ LOG_INFO :=
+endif
+
# Directory paths and user name
# Unless GAMMADIR is set on the command line, search upward from
# the current directory for a parent directory containing "src/share/vm".
--- a/hotspot/make/linux/makefiles/adlc.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/linux/makefiles/adlc.make Thu Sep 25 16:21:54 2014 -0700
@@ -106,7 +106,7 @@
all: $(EXEC)
$(EXEC) : $(OBJECTS)
- @echo Making adlc
+ @echo $(LOG_INFO) Making adlc
$(QUIETLY) $(filter-out $(ARCHFLAG),$(HOST.LINK_NOPROF.CXX)) -o $(EXEC) $(OBJECTS)
# Random dependencies:
@@ -191,7 +191,7 @@
$(QUIETLY) ./$(ADLC_UPDATER) adGlobals_$(Platform_arch_model).hpp $(TEMPDIR) $(OUTDIR)
$(QUIETLY) ./$(ADLC_UPDATER) dfa_$(Platform_arch_model).cpp $(TEMPDIR) $(OUTDIR)
$(QUIETLY) [ -f $(TEMPDIR)/made-change ] \
- || echo "Rescanned $(SOURCE.AD) but encountered no changes."
+ || echo $(LOG_INFO) "Rescanned $(SOURCE.AD) but encountered no changes."
$(QUIETLY) rm -rf $(TEMPDIR)
@@ -209,14 +209,14 @@
print }'
$(OUTDIR)/%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(filter-out $(ARCHFLAG),$(HOST.COMPILE.CXX)) -o $@ $< $(COMPILE_DONE)
# Some object files are given a prefix, to disambiguate
# them from objects of the same name built for the VM.
$(OUTDIR)/adlc-%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(filter-out $(ARCHFLAG),$(HOST.COMPILE.CXX)) -o $@ $< $(COMPILE_DONE)
--- a/hotspot/make/linux/makefiles/buildtree.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/linux/makefiles/buildtree.make Thu Sep 25 16:21:54 2014 -0700
@@ -198,7 +198,7 @@
DATA_MODE = $(DATA_MODE/$(BUILDARCH))
flags.make: $(BUILDTREE_MAKE) ../shared_dirs.lst
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -285,7 +285,7 @@
) > $@
flags_vm.make: $(BUILDTREE_MAKE) ../shared_dirs.lst
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -293,7 +293,7 @@
) > $@
../shared_dirs.lst: $(BUILDTREE_MAKE) $(GAMMADIR)/src/share/vm
- @echo Creating directory list $@
+ @echo $(LOG_INFO) Creating directory list $@
$(QUIETLY) if [ -d $(HS_ALT_SRC)/share/vm ]; then \
find $(HS_ALT_SRC)/share/vm/* -prune \
-type d \! \( $(TOPLEVEL_EXCLUDE_DIRS) \) -exec find {} \
@@ -304,7 +304,7 @@
\( $(ALWAYS_EXCLUDE_DIRS) \) -prune -o -type d -print \; >> $@
Makefile: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -314,7 +314,7 @@
) > $@
vm.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -325,7 +325,7 @@
) > $@
adlc.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -335,7 +335,7 @@
) > $@
jvmti.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -345,7 +345,7 @@
) > $@
trace.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -355,7 +355,7 @@
) > $@
sa.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -365,7 +365,7 @@
) > $@
dtrace.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
--- a/hotspot/make/linux/makefiles/defs.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/linux/makefiles/defs.make Thu Sep 25 16:21:54 2014 -0700
@@ -28,6 +28,12 @@
SLASH_JAVA ?= /java
+define print_info
+ ifneq ($$(LOG_LEVEL), warn)
+ $$(shell echo >&2 "INFO: $1")
+ endif
+endef
+
# Need PLATFORM (os-arch combo names) for jdk and hotspot, plus libarch name
# ARCH can be set explicitly in spec.gmk
@@ -185,8 +191,7 @@
# debug variants always get Full Debug Symbols (if available)
ENABLE_FULL_DEBUG_SYMBOLS = 1
endif
- _JUNK_ := $(shell \
- echo >&2 "INFO: ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)")
+ $(eval $(call print_info, "ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)"))
# since objcopy is optional, we set ZIP_DEBUGINFO_FILES later
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
@@ -201,19 +206,16 @@
endif
OBJCOPY=$(shell test -x $(DEF_OBJCOPY) && echo $(DEF_OBJCOPY))
ifneq ($(ALT_OBJCOPY),)
- _JUNK_ := $(shell echo >&2 "INFO: ALT_OBJCOPY=$(ALT_OBJCOPY)")
+ $(eval $(call print_info, "ALT_OBJCOPY=$(ALT_OBJCOPY)"))
OBJCOPY=$(shell test -x $(ALT_OBJCOPY) && echo $(ALT_OBJCOPY))
endif
ifeq ($(OBJCOPY),)
- _JUNK_ := $(shell \
- echo >&2 "INFO: no objcopy cmd found so cannot create .debuginfo files. You may need to set ALT_OBJCOPY.")
+ $(eval $(call print_info, "no objcopy cmd found so cannot create .debuginfo files. You may need to set ALT_OBJCOPY."))
ENABLE_FULL_DEBUG_SYMBOLS=0
- _JUNK_ := $(shell \
- echo >&2 "INFO: ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)")
+ $(eval $(call print_info, "ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)"))
else
- _JUNK_ := $(shell \
- echo >&2 "INFO: $(OBJCOPY) cmd found so will create .debuginfo files.")
+ $(eval $(call print_info, "$(OBJCOPY) cmd found so will create .debuginfo files."))
# Library stripping policies for .debuginfo configs:
# all_strip - strips everything from the library
@@ -227,13 +229,11 @@
#
STRIP_POLICY ?= min_strip
- _JUNK_ := $(shell \
- echo >&2 "INFO: STRIP_POLICY=$(STRIP_POLICY)")
+ $(eval $(call print_info, "STRIP_POLICY=$(STRIP_POLICY)"))
ZIP_DEBUGINFO_FILES ?= 1
- _JUNK_ := $(shell \
- echo >&2 "INFO: ZIP_DEBUGINFO_FILES=$(ZIP_DEBUGINFO_FILES)")
+ $(eval $(call print_info, "ZIP_DEBUGINFO_FILES=$(ZIP_DEBUGINFO_FILES)"))
endif
endif # ENABLE_FULL_DEBUG_SYMBOLS=1
endif # BUILD_FLAVOR
--- a/hotspot/make/linux/makefiles/dtrace.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/linux/makefiles/dtrace.make Thu Sep 25 16:21:54 2014 -0700
@@ -78,13 +78,13 @@
dtrace_gen_headers: $(DtraceOutDir)/hotspot.h $(DtraceOutDir)/hotspot_jni.h $(DtraceOutDir)/hs_private.h
else
dtrace_gen_headers:
- $(QUIETLY) echo "**NOTICE** Dtrace support disabled: $(REASON)"
+ $(QUIETLY) $(LOG_INFO) echo "**NOTICE** Dtrace support disabled: $(REASON)"
endif
# Phony target used in vm.make build target to check whether enabled.
ifeq ($(DTRACE_ENABLED),)
dtraceCheck:
- $(QUIETLY) echo "**NOTICE** Dtrace support disabled: $(REASON)"
+ $(QUIETLY) $(LOG_INFO) echo "**NOTICE** Dtrace support disabled: $(REASON)"
else
dtraceCheck:
endif
--- a/hotspot/make/linux/makefiles/jsig.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/linux/makefiles/jsig.make Thu Sep 25 16:21:54 2014 -0700
@@ -52,7 +52,7 @@
endif
$(LIBJSIG): $(JSIGSRCDIR)/jsig.c $(LIBJSIG_MAPFILE)
- @echo Making signal interposition lib...
+ @echo $(LOG_INFO) Making signal interposition lib...
$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) $(SHARED_FLAG) $(PICFLAG) \
$(LFLAGS_JSIG) $(JSIG_DEBUG_CFLAGS) $(EXTRA_CFLAGS) -o $@ $< -ldl
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
--- a/hotspot/make/linux/makefiles/jvmti.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/linux/makefiles/jvmti.make Thu Sep 25 16:21:54 2014 -0700
@@ -75,34 +75,34 @@
$(QUIETLY) $(REMOTE) $(COMPILE.JAVAC) -d $(JvmtiOutDir) $(JvmtiEnvFillSource)
$(JvmtiOutDir)/jvmtiEnter.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnter.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnter.xsl -OUT $(JvmtiOutDir)/jvmtiEnter.cpp -PARAM interface jvmti
$(JvmtiOutDir)/bytecodeInterpreterWithChecks.cpp: $(JvmtiGenClass) $(InterpreterSrcDir)/bytecodeInterpreter.cpp $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xml $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xml -XSL $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xsl -OUT $(JvmtiOutDir)/bytecodeInterpreterWithChecks.cpp
$(JvmtiOutDir)/jvmtiEnterTrace.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnter.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnter.xsl -OUT $(JvmtiOutDir)/jvmtiEnterTrace.cpp -PARAM interface jvmti -PARAM trace Trace
$(JvmtiOutDir)/jvmtiEnvRecommended.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnv.xsl $(JvmtiSrcDir)/jvmtiEnv.cpp $(JvmtiEnvFillClass)
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnv.xsl -OUT $(JvmtiOutDir)/jvmtiEnvStub.cpp
$(QUIETLY) $(REMOTE) $(RUN.JAVA) -classpath $(JvmtiOutDir) jvmtiEnvFill $(JvmtiSrcDir)/jvmtiEnv.cpp $(JvmtiOutDir)/jvmtiEnvStub.cpp $(JvmtiOutDir)/jvmtiEnvRecommended.cpp
$(JvmtiOutDir)/jvmtiEnv.hpp: $(both) $(JvmtiSrcDir)/jvmtiHpp.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiHpp.xsl -OUT $(JvmtiOutDir)/jvmtiEnv.hpp
$(JvmtiOutDir)/jvmti.h: $(both) $(JvmtiSrcDir)/jvmtiH.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiH.xsl -OUT $(JvmtiOutDir)/jvmti.h
jvmtidocs: $(JvmtiOutDir)/jvmti.html
$(JvmtiOutDir)/jvmti.html: $(both) $(JvmtiSrcDir)/jvmti.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmti.xsl -OUT $(JvmtiOutDir)/jvmti.html
# #########################################################################
--- a/hotspot/make/linux/makefiles/rules.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/linux/makefiles/rules.make Thu Sep 25 16:21:54 2014 -0700
@@ -146,12 +146,12 @@
# The non-PIC object files are only generated for 32 bit platforms.
ifdef LP64
%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(COMPILE.CXX) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE)
else
%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(if $(findstring $@, $(NONPIC_OBJ_FILES)), \
$(subst $(VM_PICFLAG), ,$(COMPILE.CXX)) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE), \
@@ -159,18 +159,18 @@
endif
%.o: %.s
- @echo Assembling $<
+ @echo $(LOG_INFO) Assembling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(AS.S) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE)
%.s: %.cpp
- @echo Generating assembly for $<
+ @echo $(LOG_INFO) Generating assembly for $<
$(QUIETLY) $(GENASM.CXX) -o $@ $<
$(QUIETLY) $(DEMANGLE) $(COMPILE_DONE)
# Intermediate files (for debugging macros)
%.i: %.cpp
- @echo Preprocessing $< to $@
+ @echo $(LOG_INFO) Preprocessing $< to $@
$(QUIETLY) $(PREPROCESS.CXX) $< > $@ $(COMPILE_DONE)
# Override gnumake built-in rules which do sccs get operations badly.
--- a/hotspot/make/linux/makefiles/sa.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/linux/makefiles/sa.make Thu Sep 25 16:21:54 2014 -0700
@@ -67,7 +67,7 @@
fi
$(GENERATED)/sa-jdi.jar:: $(AGENT_FILES)
- $(QUIETLY) echo "Making $@"
+ $(QUIETLY) echo $(LOG_INFO) "Making $@"
$(QUIETLY) if [ "$(BOOT_JAVA_HOME)" = "" ]; then \
echo "ALT_BOOTDIR, BOOTDIR or JAVA_HOME needs to be defined to build SA"; \
exit 1; \
--- a/hotspot/make/linux/makefiles/saproc.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/linux/makefiles/saproc.make Thu Sep 25 16:21:54 2014 -0700
@@ -80,7 +80,7 @@
echo "ALT_BOOTDIR, BOOTDIR or JAVA_HOME needs to be defined to build SA"; \
exit 1; \
fi
- @echo Making SA debugger back-end...
+ @echo $(LOG_INFO) Making SA debugger back-end...
$(QUIETLY) $(CC) -D$(BUILDARCH) -D_GNU_SOURCE \
-D_FILE_OFFSET_BITS=64 \
$(SYMFLAG) $(ARCHFLAG) $(SHARED_FLAG) $(PICFLAG) \
--- a/hotspot/make/linux/makefiles/trace.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/linux/makefiles/trace.make Thu Sep 25 16:21:54 2014 -0700
@@ -81,7 +81,7 @@
all: $(TraceGeneratedFiles)
GENERATE_CODE= \
- $(QUIETLY) echo Generating $@; \
+ $(QUIETLY) echo $(LOG_INFO) Generating $@; \
$(XSLT) -IN $(word 1,$^) -XSL $(word 2,$^) -OUT $@; \
test -f $@
--- a/hotspot/make/linux/makefiles/vm.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/linux/makefiles/vm.make Thu Sep 25 16:21:54 2014 -0700
@@ -286,7 +286,7 @@
# rule for building precompiled header
$(PRECOMPILED_HEADER):
- $(QUIETLY) echo Generating precompiled header $@
+ $(QUIETLY) echo $(LOG_INFO) Generating precompiled header $@
$(QUIETLY) mkdir -p $(PRECOMPILED_HEADER_DIR)
$(QUIETLY) rm -f $@
$(QUIETLY) $(COMPILE.CXX) $(DEPFLAGS) -x c++-header $(PRECOMPILED_HEADER_SRC) -o $@ $(COMPILE_DONE)
@@ -318,7 +318,7 @@
# details in bug 6538311.
$(LIBJVM): $(LIBJVM.o) $(LIBJVM_MAPFILE) $(LD_SCRIPT)
$(QUIETLY) { \
- echo Linking vm...; \
+ echo $(LOG_INFO) Linking vm...; \
$(LINK_LIB.CXX/PRE_HOOK) \
$(LINK_VM) $(LD_SCRIPT_FLAG) \
$(LFLAGS_VM) -o $@ $(sort $(LIBJVM.o)) $(LIBS_VM); \
--- a/hotspot/make/solaris/makefiles/adlc.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/solaris/makefiles/adlc.make Thu Sep 25 16:21:54 2014 -0700
@@ -127,7 +127,7 @@
all: $(EXEC)
$(EXEC) : $(OBJECTS)
- @echo Making adlc
+ @echo $(LOG_INFO) Making adlc
$(QUIETLY) $(LINK_NOPROF.CXX) -o $(EXEC) $(OBJECTS)
# Random dependencies:
@@ -206,7 +206,7 @@
$(QUIETLY) ./$(ADLC_UPDATER) adGlobals_$(Platform_arch_model).hpp $(TEMPDIR) $(OUTDIR)
$(QUIETLY) ./$(ADLC_UPDATER) dfa_$(Platform_arch_model).cpp $(TEMPDIR) $(OUTDIR)
$(QUIETLY) [ -f $(TEMPDIR)/made-change ] \
- || echo "Rescanned $(SOURCE.AD) but encountered no changes."
+ || echo $(LOG_INFO) "Rescanned $(SOURCE.AD) but encountered no changes."
$(QUIETLY) rm -rf $(TEMPDIR)
@@ -224,14 +224,14 @@
print }'
$(OUTDIR)/%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(COMPILE.CXX) -o $@ $< $(COMPILE_DONE)
# Some object files are given a prefix, to disambiguate
# them from objects of the same name built for the VM.
$(OUTDIR)/adlc-%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(COMPILE.CXX) -o $@ $< $(COMPILE_DONE)
--- a/hotspot/make/solaris/makefiles/buildtree.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/solaris/makefiles/buildtree.make Thu Sep 25 16:21:54 2014 -0700
@@ -190,7 +190,7 @@
DATA_MODE = $(DATA_MODE/$(BUILDARCH))
flags.make: $(BUILDTREE_MAKE) ../shared_dirs.lst
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -272,7 +272,7 @@
) > $@
flags_vm.make: $(BUILDTREE_MAKE) ../shared_dirs.lst
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -280,7 +280,7 @@
) > $@
../shared_dirs.lst: $(BUILDTREE_MAKE) $(GAMMADIR)/src/share/vm
- @echo Creating directory list $@
+ @echo $(LOG_INFO) Creating directory list $@
$(QUIETLY) if [ -d $(HS_ALT_SRC)/share/vm ]; then \
find $(HS_ALT_SRC)/share/vm/* -prune \
-type d \! \( $(TOPLEVEL_EXCLUDE_DIRS) \) -exec find {} \
@@ -291,7 +291,7 @@
\( $(ALWAYS_EXCLUDE_DIRS) \) -prune -o -type d -print \; >> $@
Makefile: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -301,7 +301,7 @@
) > $@
vm.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -312,7 +312,7 @@
) > $@
adlc.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -322,7 +322,7 @@
) > $@
jvmti.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -332,7 +332,7 @@
) > $@
trace.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -342,7 +342,7 @@
) > $@
sa.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
@@ -352,7 +352,7 @@
) > $@
dtrace.make: $(BUILDTREE_MAKE)
- @echo Creating $@ ...
+ @echo $(LOG_INFO) Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
echo; \
--- a/hotspot/make/solaris/makefiles/defs.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/solaris/makefiles/defs.make Thu Sep 25 16:21:54 2014 -0700
@@ -26,6 +26,12 @@
# Include the top level defs.make under make directory instead of this one.
# This file is included into make/defs.make.
+define print_info
+ ifneq ($$(LOG_LEVEL), warn)
+ $$(shell echo >&2 "INFO: $1")
+ endif
+endef
+
# Need PLATFORM (os-arch combo names) for jdk and hotspot, plus libarch name
SLASH_JAVA ?= /java
ARCH:=$(shell uname -p)
@@ -120,8 +126,7 @@
# debug variants always get Full Debug Symbols (if available)
ENABLE_FULL_DEBUG_SYMBOLS = 1
endif
- _JUNK_ := $(shell \
- echo >&2 "INFO: ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)")
+ $(eval $(call print_info, "ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)"))
# since objcopy is optional, we set ZIP_DEBUGINFO_FILES later
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
@@ -129,19 +134,16 @@
DEF_OBJCOPY=/usr/sfw/bin/gobjcopy
OBJCOPY=$(shell test -x $(DEF_OBJCOPY) && echo $(DEF_OBJCOPY))
ifneq ($(ALT_OBJCOPY),)
- _JUNK_ := $(shell echo >&2 "INFO: ALT_OBJCOPY=$(ALT_OBJCOPY)")
+ $(eval $(call print_info, "ALT_OBJCOPY=$(ALT_OBJCOPY)"))
OBJCOPY=$(shell test -x $(ALT_OBJCOPY) && echo $(ALT_OBJCOPY))
endif
ifeq ($(OBJCOPY),)
- _JUNK_ := $(shell \
- echo >&2 "INFO: no objcopy cmd found so cannot create .debuginfo files.")
+ $(eval $(call print_info, "no objcopy cmd found so cannot create .debuginfo files."))
ENABLE_FULL_DEBUG_SYMBOLS=0
- _JUNK_ := $(shell \
- echo >&2 "INFO: ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)")
+ $(eval $(call print_info, "ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)"))
else
- _JUNK_ := $(shell \
- echo >&2 "INFO: $(OBJCOPY) cmd found so will create .debuginfo files.")
+ $(eval $(call print_info, "$(OBJCOPY) cmd found so will create .debuginfo files."))
# Library stripping policies for .debuginfo configs:
# all_strip - strips everything from the library
@@ -155,13 +157,11 @@
#
STRIP_POLICY ?= min_strip
- _JUNK_ := $(shell \
- echo >&2 "INFO: STRIP_POLICY=$(STRIP_POLICY)")
+ $(eval $(call print_info, "STRIP_POLICY=$(STRIP_POLICY)"))
ZIP_DEBUGINFO_FILES ?= 1
- _JUNK_ := $(shell \
- echo >&2 "INFO: ZIP_DEBUGINFO_FILES=$(ZIP_DEBUGINFO_FILES)")
+ $(eval $(call print_info, "ZIP_DEBUGINFO_FILES=$(ZIP_DEBUGINFO_FILES)"))
endif
endif # ENABLE_FULL_DEBUG_SYMBOLS=1
endif # BUILD_FLAVOR
--- a/hotspot/make/solaris/makefiles/dtrace.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/solaris/makefiles/dtrace.make Thu Sep 25 16:21:54 2014 -0700
@@ -32,7 +32,7 @@
ifdef USE_GCC
dtraceCheck:
- $(QUIETLY) echo "**NOTICE** Dtrace support disabled for gcc builds"
+ $(QUIETLY) echo $(LOG_INFO) "**NOTICE** Dtrace support disabled for gcc builds"
else
@@ -102,7 +102,7 @@
XLIBJVM_DTRACE_DIZ = $(XLIBJVM_DIR)/$(LIBJVM_DTRACE_DIZ)
$(XLIBJVM_DB): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(DTRACE_SRCDIR)/$(JVM_DB).c $(JVMOFFS).h $(LIBJVM_DB_MAPFILE)
- @echo Making $@
+ @echo $(LOG_INFO) Making $@
$(QUIETLY) mkdir -p $(XLIBJVM_DIR) ; \
$(CC) $(SYMFLAG) $(ARCHFLAG/$(ISA)) -D$(TYPE) -I. -I$(GENERATED) \
$(SHARED_FLAG) $(LFLAGS_JVM_DB) -o $@ $(DTRACE_SRCDIR)/$(JVM_DB).c -lc
@@ -137,7 +137,7 @@
endif
$(XLIBJVM_DTRACE): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(DTRACE_SRCDIR)/$(JVM_DTRACE).c $(DTRACE_SRCDIR)/$(JVM_DTRACE).h $(LIBJVM_DTRACE_MAPFILE)
- @echo Making $@
+ @echo $(LOG_INFO) Making $@
$(QUIETLY) mkdir -p $(XLIBJVM_DIR) ; \
$(CC) $(SYMFLAG) $(ARCHFLAG/$(ISA)) -D$(TYPE) -I. \
$(SHARED_FLAG) $(LFLAGS_JVM_DTRACE) -o $@ $(DTRACE_SRCDIR)/$(JVM_DTRACE).c -lc -lthread -ldoor
@@ -207,7 +207,7 @@
$(QUIETLY) $(CXX) -c -I. -o $@ $(ARCHFLAG) -D$(TYPE) $(JVMOFFS).cpp
$(LIBJVM_DB): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(DTRACE_SRCDIR)/$(JVM_DB).c $(JVMOFFS.o) $(XLIBJVM_DB) $(LIBJVM_DB_MAPFILE)
- @echo Making $@
+ @echo $(LOG_INFO) Making $@
$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) -D$(TYPE) -I. -I$(GENERATED) \
$(SHARED_FLAG) $(LFLAGS_JVM_DB) -o $@ $(DTRACE_SRCDIR)/$(JVM_DB).c -lc
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
@@ -232,7 +232,7 @@
endif
$(LIBJVM_DTRACE): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(DTRACE_SRCDIR)/$(JVM_DTRACE).c $(XLIBJVM_DTRACE) $(DTRACE_SRCDIR)/$(JVM_DTRACE).h $(LIBJVM_DTRACE_MAPFILE)
- @echo Making $@
+ @echo $(LOG_INFO) Making $@
$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) -D$(TYPE) -I. \
$(SHARED_FLAG) $(LFLAGS_JVM_DTRACE) -o $@ $(DTRACE_SRCDIR)/$(JVM_DTRACE).c -lc -lthread -ldoor
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
@@ -286,7 +286,7 @@
# Dtrace is available, so we build $(DTRACE.o)
$(DTRACE.o): $(DTRACE).d $(DTraced_Files)
- @echo Compiling $(DTRACE).d
+ @echo $(LOG_INFO) Compiling $(DTRACE).d
$(QUIETLY) $(DTRACE_PROG) $(DTRACE_OPTS) -C -I. -G -xlazyload -o $@ -s $(DTRACE).d \
$(DTraced_Files) ||\
@@ -352,7 +352,7 @@
# The jhelper.d and hotspot probes are separated into two different SUNW_dof sections.
# Now the jhelper.d is built without the -Xlazyload flag.
$(DTRACE_JHELPER.o) : $(DTRACE_JHELPER).d $(JVMOFFS).h $(JVMOFFS)Index.h
- @echo Compiling $(DTRACE_JHELPER).d
+ @echo $(LOG_INFO) Compiling $(DTRACE_JHELPER).d
$(QUIETLY) $(DTRACE_PROG) $(DTRACE_OPTS) -C -I. -G -o $@ -s $(DTRACE_JHELPER).d
.PHONY: dtraceCheck
@@ -391,14 +391,14 @@
else # manually disabled
dtraceCheck:
- $(QUIETLY) echo "**NOTICE** Dtrace support disabled via environment variable"
+ $(QUIETLY) echo $(LOG_INFO) "**NOTICE** Dtrace support disabled via environment variable"
endif # ifeq ("${HOTSPOT_DISABLE_DTRACE_PROBES}", "")
else # No dtrace program found
dtraceCheck:
- $(QUIETLY) echo "**NOTICE** Dtrace support disabled: not supported by system"
+ $(QUIETLY) echo $(LOG_INFO) "**NOTICE** Dtrace support disabled: not supported by system"
endif # ifneq ("${dtraceFound}", "")
@@ -407,6 +407,6 @@
else # CORE build
dtraceCheck:
- $(QUIETLY) echo "**NOTICE** Dtrace support disabled for CORE builds"
+ $(QUIETLY) echo $(LOG_INFO) "**NOTICE** Dtrace support disabled for CORE builds"
endif # ifneq ("${TYPE}", "CORE")
--- a/hotspot/make/solaris/makefiles/jsig.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/solaris/makefiles/jsig.make Thu Sep 25 16:21:54 2014 -0700
@@ -48,7 +48,7 @@
endif
$(LIBJSIG): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(JSIGSRCDIR)/jsig.c $(LIBJSIG_MAPFILE)
- @echo Making signal interposition lib...
+ @echo $(LOG_INFO) Making signal interposition lib...
$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) $(SHARED_FLAG) $(PICFLAG) \
$(LFLAGS_JSIG) -o $@ $(JSIGSRCDIR)/jsig.c -ldl
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
--- a/hotspot/make/solaris/makefiles/jvmti.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/solaris/makefiles/jvmti.make Thu Sep 25 16:21:54 2014 -0700
@@ -74,34 +74,34 @@
$(QUIETLY) $(COMPILE.JAVAC) -d $(JvmtiOutDir) $(JvmtiEnvFillSource)
$(JvmtiOutDir)/jvmtiEnter.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnter.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnter.xsl -OUT $(JvmtiOutDir)/jvmtiEnter.cpp -PARAM interface jvmti
$(JvmtiOutDir)/bytecodeInterpreterWithChecks.cpp: $(JvmtiGenClass) $(InterpreterSrcDir)/bytecodeInterpreter.cpp $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xml $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xml -XSL $(InterpreterSrcDir)/bytecodeInterpreterWithChecks.xsl -OUT $(JvmtiOutDir)/bytecodeInterpreterWithChecks.cpp
$(JvmtiOutDir)/jvmtiEnterTrace.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnter.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnter.xsl -OUT $(JvmtiOutDir)/jvmtiEnterTrace.cpp -PARAM interface jvmti -PARAM trace Trace
$(JvmtiOutDir)/jvmtiEnvRecommended.cpp: $(both) $(JvmtiSrcDir)/jvmtiEnv.xsl $(JvmtiSrcDir)/jvmtiEnv.cpp $(JvmtiEnvFillClass)
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnv.xsl -OUT $(JvmtiOutDir)/jvmtiEnvStub.cpp
$(QUIETLY) $(RUN.JAVA) -classpath $(JvmtiOutDir) jvmtiEnvFill $(JvmtiSrcDir)/jvmtiEnv.cpp $(JvmtiOutDir)/jvmtiEnvStub.cpp $(JvmtiOutDir)/jvmtiEnvRecommended.cpp
$(JvmtiOutDir)/jvmtiEnv.hpp: $(both) $(JvmtiSrcDir)/jvmtiHpp.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiHpp.xsl -OUT $(JvmtiOutDir)/jvmtiEnv.hpp
$(JvmtiOutDir)/jvmti.h: $(both) $(JvmtiSrcDir)/jvmtiH.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiH.xsl -OUT $(JvmtiOutDir)/jvmti.h
jvmtidocs: $(JvmtiOutDir)/jvmti.html
$(JvmtiOutDir)/jvmti.html: $(both) $(JvmtiSrcDir)/jvmti.xsl
- @echo Generating $@
+ @echo $(LOG_INFO) Generating $@
$(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmti.xsl -OUT $(JvmtiOutDir)/jvmti.html
# #########################################################################
@@ -113,4 +113,3 @@
rm $(JvmtiGenClass) $(JvmtiEnvFillClass) $(JvmtiGeneratedFiles)
# #########################################################################
-
--- a/hotspot/make/solaris/makefiles/rules.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/solaris/makefiles/rules.make Thu Sep 25 16:21:54 2014 -0700
@@ -138,12 +138,12 @@
# Sun compiler for 64 bit Solaris does not support building non-PIC object files.
ifdef LP64
%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(COMPILE.CXX) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE)
else
%.o: %.cpp
- @echo Compiling $<
+ @echo $(LOG_INFO) Compiling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(if $(findstring $@, $(NONPIC_OBJ_FILES)), \
$(subst $(VM_PICFLAG), ,$(COMPILE.CXX)) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE), \
@@ -151,18 +151,18 @@
endif
%.o: %.s
- @echo Assembling $<
+ @echo $(LOG_INFO) Assembling $<
$(QUIETLY) $(REMOVE_TARGET)
$(QUIETLY) $(AS.S) -o $@ $< $(COMPILE_DONE)
%.s: %.cpp
- @echo Generating assembly for $<
+ @echo $(LOG_INFO) Generating assembly for $<
$(QUIETLY) $(GENASM.CXX) -o $@ $<
$(QUIETLY) $(DEMANGLE) $(COMPILE_DONE)
# Intermediate files (for debugging macros)
%.i: %.cpp
- @echo Preprocessing $< to $@
+ @echo $(LOG_INFO) Preprocessing $< to $@
$(QUIETLY) $(PREPROCESS.CXX) $< > $@ $(COMPILE_DONE)
# Override gnumake built-in rules which do sccs get operations badly.
--- a/hotspot/make/solaris/makefiles/sa.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/solaris/makefiles/sa.make Thu Sep 25 16:21:54 2014 -0700
@@ -58,7 +58,7 @@
fi
$(GENERATED)/sa-jdi.jar: $(AGENT_FILES)
- $(QUIETLY) echo "Making $@";
+ $(QUIETLY) echo $(LOG_INFO) "Making $@";
$(QUIETLY) if [ "$(BOOT_JAVA_HOME)" = "" ]; then \
echo "ALT_BOOTDIR, BOOTDIR or JAVA_HOME needs to be defined to build SA"; \
exit 1; \
--- a/hotspot/make/solaris/makefiles/saproc.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/solaris/makefiles/saproc.make Thu Sep 25 16:21:54 2014 -0700
@@ -95,7 +95,7 @@
echo "ALT_BOOTDIR, BOOTDIR or JAVA_HOME needs to be defined to build SA"; \
exit 1; \
fi
- @echo Making SA debugger back-end...
+ @echo $(LOG_INFO) Making SA debugger back-end...
$(QUIETLY) $(CXX) \
$(SYMFLAG) $(ARCHFLAG) $(SHARED_FLAG) $(PICFLAG) \
-I$(SASRCDIR) \
--- a/hotspot/make/solaris/makefiles/trace.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/solaris/makefiles/trace.make Thu Sep 25 16:21:54 2014 -0700
@@ -77,7 +77,7 @@
all: $(TraceGeneratedFiles)
GENERATE_CODE= \
- $(QUIETLY) echo Generating $@; \
+ $(QUIETLY) echo $(LOG_INFO) Generating $@; \
$(XSLT) -IN $(word 1,$^) -XSL $(word 2,$^) -OUT $@; \
test -f $@
@@ -112,5 +112,3 @@
clean cleanall:
rm $(TraceGeneratedFiles)
-
-
--- a/hotspot/make/solaris/makefiles/vm.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/solaris/makefiles/vm.make Thu Sep 25 16:21:54 2014 -0700
@@ -295,7 +295,7 @@
# making the library:
$(LIBJVM): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(LIBJVM.o) $(LIBJVM_MAPFILE)
ifeq ($(filter -sbfast -xsbfast, $(CFLAGS_BROWSE)),)
- @echo Linking vm...
+ @echo $(LOG_INFO) Linking vm...
$(QUIETLY) $(LINK_LIB.CXX/PRE_HOOK)
$(QUIETLY) $(LINK_VM) $(LFLAGS_VM) -o $@ $(sort $(LIBJVM.o)) $(LIBS_VM)
$(QUIETLY) $(LINK_LIB.CXX/POST_HOOK)
--- a/hotspot/make/windows/makefiles/projectcreator.make Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/make/windows/makefiles/projectcreator.make Thu Sep 25 16:21:54 2014 -0700
@@ -31,12 +31,8 @@
ProjectCreatorSources=\
$(WorkSpace)\src\share\tools\ProjectCreator\ProjectCreator.java \
$(WorkSpace)\src\share\tools\ProjectCreator\FileTreeCreator.java \
- $(WorkSpace)\src\share\tools\ProjectCreator\FileTreeCreatorVC7.java \
$(WorkSpace)\src\share\tools\ProjectCreator\FileTreeCreatorVC10.java \
$(WorkSpace)\src\share\tools\ProjectCreator\WinGammaPlatform.java \
- $(WorkSpace)\src\share\tools\ProjectCreator\WinGammaPlatformVC7.java \
- $(WorkSpace)\src\share\tools\ProjectCreator\WinGammaPlatformVC8.java \
- $(WorkSpace)\src\share\tools\ProjectCreator\WinGammaPlatformVC9.java \
$(WorkSpace)\src\share\tools\ProjectCreator\WinGammaPlatformVC10.java \
$(WorkSpace)\src\share\tools\ProjectCreator\Util.java \
$(WorkSpace)\src\share\tools\ProjectCreator\BuildConfig.java \
--- a/hotspot/src/cpu/ppc/vm/interp_masm_ppc_64.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/cpu/ppc/vm/interp_masm_ppc_64.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -1166,9 +1166,9 @@
beq(CCR0, overflow_with_error);
// Has the nmethod been invalidated already?
- lwz(Rtmp, nmethod::entry_bci_offset(), R3_RET);
- cmpwi(CCR0, Rtmp, InvalidOSREntryBci);
- beq(CCR0, overflow_with_error);
+ lbz(Rtmp, nmethod::state_offset(), R3_RET);
+ cmpwi(CCR0, Rtmp, nmethod::in_use);
+ bne(CCR0, overflow_with_error);
// Migrate the interpreter frame off of the stack.
// We can use all registers because we will not return to interpreter from this point.
--- a/hotspot/src/cpu/ppc/vm/templateTable_ppc_64.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/cpu/ppc/vm/templateTable_ppc_64.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -1674,9 +1674,9 @@
__ beq(CCR0, Lforward);
// Has the nmethod been invalidated already?
- __ lwz(R0, nmethod::entry_bci_offset(), R3_RET);
- __ cmpwi(CCR0, R0, InvalidOSREntryBci);
- __ beq(CCR0, Lforward);
+ __ lbz(R0, nmethod::state_offset(), R3_RET);
+ __ cmpwi(CCR0, R0, nmethod::in_use);
+ __ bne(CCR0, Lforward);
// Migrate the interpreter frame off of the stack.
// We can use all registers because we will not return to interpreter from this point.
--- a/hotspot/src/cpu/sparc/vm/interp_masm_sparc.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/cpu/sparc/vm/interp_masm_sparc.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -2407,8 +2407,8 @@
br_null_short(O0, Assembler::pn, overflow_with_error);
// Has the nmethod been invalidated already?
- ld(O0, nmethod::entry_bci_offset(), O2);
- cmp_and_br_short(O2, InvalidOSREntryBci, Assembler::equal, Assembler::pn, overflow_with_error);
+ ldub(O0, nmethod::state_offset(), O2);
+ cmp_and_br_short(O2, nmethod::in_use, Assembler::notEqual, Assembler::pn, overflow_with_error);
// migrate the interpreter frame off of the stack
--- a/hotspot/src/cpu/sparc/vm/templateTable_sparc.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/cpu/sparc/vm/templateTable_sparc.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -1636,8 +1636,8 @@
__ br_null_short(O0, Assembler::pn, Lforward);
// Has the nmethod been invalidated already?
- __ ld(O0, nmethod::entry_bci_offset(), O2);
- __ cmp_and_br_short(O2, InvalidOSREntryBci, Assembler::equal, Assembler::pn, Lforward);
+ __ ldub(O0, nmethod::state_offset(), O2);
+ __ cmp_and_br_short(O2, nmethod::in_use, Assembler::notEqual, Assembler::pn, Lforward);
// migrate the interpreter frame off of the stack
--- a/hotspot/src/cpu/x86/vm/templateTable_x86_32.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/cpu/x86/vm/templateTable_x86_32.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -1724,9 +1724,8 @@
__ testptr(rax, rax); // test result
__ jcc(Assembler::zero, dispatch); // no osr if null
// nmethod may have been invalidated (VM may block upon call_VM return)
- __ movl(rcx, Address(rax, nmethod::entry_bci_offset()));
- __ cmpl(rcx, InvalidOSREntryBci);
- __ jcc(Assembler::equal, dispatch);
+ __ cmpb(Address(rax, nmethod::state_offset()), nmethod::in_use);
+ __ jcc(Assembler::notEqual, dispatch);
// We have the address of an on stack replacement routine in rax,
// We need to prepare to execute the OSR method. First we must
@@ -1734,8 +1733,7 @@
__ mov(rbx, rax); // save the nmethod
- const Register thread = rcx;
- __ get_thread(thread);
+ __ get_thread(rcx);
call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin));
// rax, is OSR buffer, move it to expected parameter location
__ mov(rcx, rax);
--- a/hotspot/src/cpu/x86/vm/templateTable_x86_64.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/cpu/x86/vm/templateTable_x86_64.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -1751,9 +1751,8 @@
__ testptr(rax, rax); // test result
__ jcc(Assembler::zero, dispatch); // no osr if null
// nmethod may have been invalidated (VM may block upon call_VM return)
- __ movl(rcx, Address(rax, nmethod::entry_bci_offset()));
- __ cmpl(rcx, InvalidOSREntryBci);
- __ jcc(Assembler::equal, dispatch);
+ __ cmpb(Address(rax, nmethod::state_offset()), nmethod::in_use);
+ __ jcc(Assembler::notEqual, dispatch);
// We have the address of an on stack replacement routine in eax
// We need to prepare to execute the OSR method. First we must
--- a/hotspot/src/os/aix/vm/os_aix.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/aix/vm/os_aix.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -4002,10 +4002,6 @@
return true;
}
-// int local_vsnprintf(char* buf, size_t count, const char* format, va_list args) {
-// return ::vsnprintf(buf, count, format, args);
-// }
-
// Is a (classpath) directory empty?
bool os::dir_is_empty(const char* path) {
DIR *dir = NULL;
--- a/hotspot/src/os/aix/vm/os_aix.inline.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/aix/vm/os_aix.inline.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -269,4 +269,8 @@
return true;
}
+inline void os::exit(int num) {
+ ::exit(num);
+}
+
#endif // OS_AIX_VM_OS_AIX_INLINE_HPP
--- a/hotspot/src/os/bsd/dtrace/generateJvmOffsets.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/bsd/dtrace/generateJvmOffsets.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -255,6 +255,7 @@
printf("\n");
GEN_OFFS(nmethod, _method);
+ GEN_OFFS(nmethod, _dependencies_offset);
GEN_OFFS(nmethod, _oops_offset);
GEN_OFFS(nmethod, _scopes_data_offset);
GEN_OFFS(nmethod, _scopes_pcs_offset);
--- a/hotspot/src/os/bsd/dtrace/libjvm_db.c Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/bsd/dtrace/libjvm_db.c Thu Sep 25 16:21:54 2014 -0700
@@ -595,7 +595,7 @@
/* scopes_pcs */
err = ps_pread(J->P, nm + OFFSET_nmethod_scopes_pcs_offset, &N->scopes_pcs_beg, SZ32);
CHECK_FAIL(err);
- err = ps_pread(J->P, nm + OFFSET_nmethod_handler_table_offset, &N->scopes_pcs_end, SZ32);
+ err = ps_pread(J->P, nm + OFFSET_nmethod_dependencies_offset, &N->scopes_pcs_end, SZ32);
CHECK_FAIL(err);
/* scopes_data */
--- a/hotspot/src/os/bsd/vm/os_bsd.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/bsd/vm/os_bsd.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -106,18 +106,18 @@
# include <sys/syscall.h>
#if defined(__FreeBSD__) || defined(__NetBSD__)
-# include <elf.h>
+ #include <elf.h>
#endif
#ifdef __APPLE__
-# include <mach/mach.h> // semaphore_* API
-# include <mach-o/dyld.h>
-# include <sys/proc_info.h>
-# include <objc/objc-auto.h>
+ #include <mach/mach.h> // semaphore_* API
+ #include <mach-o/dyld.h>
+ #include <sys/proc_info.h>
+ #include <objc/objc-auto.h>
#endif
#ifndef MAP_ANONYMOUS
-#define MAP_ANONYMOUS MAP_ANON
+ #define MAP_ANONYMOUS MAP_ANON
#endif
#define MAX_PATH (2 * K)
@@ -152,9 +152,9 @@
static pid_t _initial_pid = 0;
-/* Signal number used to suspend/resume a thread */
-
-/* do not use any signal number less than SIGSEGV, see 4355769 */
+// Signal number used to suspend/resume a thread
+
+// do not use any signal number less than SIGSEGV, see 4355769
static int SR_signum = SIGUSR2;
sigset_t SR_sigset;
@@ -232,20 +232,20 @@
#elif defined(PPC32)
static char cpu_arch[] = "ppc";
#elif defined(SPARC)
-# ifdef _LP64
+ #ifdef _LP64
static char cpu_arch[] = "sparcv9";
-# else
+ #else
static char cpu_arch[] = "sparc";
-# endif
+ #endif
#else
-#error Add appropriate cpu_arch setting
+ #error Add appropriate cpu_arch setting
#endif
// Compiler variant
#ifdef COMPILER2
-#define COMPILER_VARIANT "server"
+ #define COMPILER_VARIANT "server"
#else
-#define COMPILER_VARIANT "client"
+ #define COMPILER_VARIANT "client"
#endif
@@ -255,21 +255,19 @@
int cpu_val;
julong mem_val;
- /* get processors count via hw.ncpus sysctl */
+ // get processors count via hw.ncpus sysctl
mib[0] = CTL_HW;
mib[1] = HW_NCPU;
len = sizeof(cpu_val);
if (sysctl(mib, 2, &cpu_val, &len, NULL, 0) != -1 && cpu_val >= 1) {
- assert(len == sizeof(cpu_val), "unexpected data size");
- set_processor_count(cpu_val);
+ assert(len == sizeof(cpu_val), "unexpected data size");
+ set_processor_count(cpu_val);
+ } else {
+ set_processor_count(1); // fallback
}
- else {
- set_processor_count(1); // fallback
- }
-
- /* get physical memory via hw.memsize sysctl (hw.memsize is used
- * since it returns a 64 bit value)
- */
+
+ // get physical memory via hw.memsize sysctl (hw.memsize is used
+ // since it returns a 64 bit value)
mib[0] = CTL_HW;
#if defined (HW_MEMSIZE) // Apple
@@ -284,19 +282,19 @@
len = sizeof(mem_val);
if (sysctl(mib, 2, &mem_val, &len, NULL, 0) != -1) {
- assert(len == sizeof(mem_val), "unexpected data size");
- _physical_memory = mem_val;
+ assert(len == sizeof(mem_val), "unexpected data size");
+ _physical_memory = mem_val;
} else {
- _physical_memory = 256*1024*1024; // fallback (XXXBSD?)
+ _physical_memory = 256 * 1024 * 1024; // fallback (XXXBSD?)
}
#ifdef __OpenBSD__
{
- // limit _physical_memory memory view on OpenBSD since
- // datasize rlimit restricts us anyway.
- struct rlimit limits;
- getrlimit(RLIMIT_DATA, &limits);
- _physical_memory = MIN2(_physical_memory, (julong)limits.rlim_cur);
+ // limit _physical_memory memory view on OpenBSD since
+ // datasize rlimit restricts us anyway.
+ struct rlimit limits;
+ getrlimit(RLIMIT_DATA, &limits);
+ _physical_memory = MIN2(_physical_memory, (julong)limits.rlim_cur);
}
#endif
}
@@ -342,14 +340,14 @@
// Important note: if the location of libjvm.so changes this
// code needs to be changed accordingly.
-// See ld(1):
-// The linker uses the following search paths to locate required
-// shared libraries:
-// 1: ...
-// ...
-// 7: The default directories, normally /lib and /usr/lib.
+ // See ld(1):
+ // The linker uses the following search paths to locate required
+ // shared libraries:
+ // 1: ...
+ // ...
+ // 7: The default directories, normally /lib and /usr/lib.
#ifndef DEFAULT_LIBPATH
-#define DEFAULT_LIBPATH "/lib:/usr/lib"
+ #define DEFAULT_LIBPATH "/lib:/usr/lib"
#endif
// Base path of extensions installed on the system.
@@ -435,8 +433,8 @@
#else // __APPLE__
-#define SYS_EXTENSIONS_DIR "/Library/Java/Extensions"
-#define SYS_EXTENSIONS_DIRS SYS_EXTENSIONS_DIR ":/Network" SYS_EXTENSIONS_DIR ":/System" SYS_EXTENSIONS_DIR ":/usr/lib/java"
+ #define SYS_EXTENSIONS_DIR "/Library/Java/Extensions"
+ #define SYS_EXTENSIONS_DIRS SYS_EXTENSIONS_DIR ":/Network" SYS_EXTENSIONS_DIR ":/System" SYS_EXTENSIONS_DIR ":/usr/lib/java"
const char *user_home_dir = get_home();
// The null in SYS_EXTENSIONS_DIRS counts for the size of the colon after user_home_dir.
@@ -561,14 +559,15 @@
static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs;
bool os::Bsd::is_sig_ignored(int sig) {
- struct sigaction oact;
- sigaction(sig, (struct sigaction*)NULL, &oact);
- void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction)
- : CAST_FROM_FN_PTR(void*, oact.sa_handler);
- if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN))
- return true;
- else
- return false;
+ struct sigaction oact;
+ sigaction(sig, (struct sigaction*)NULL, &oact);
+ void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction)
+ : CAST_FROM_FN_PTR(void*, oact.sa_handler);
+ if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN)) {
+ return true;
+ } else {
+ return false;
+ }
}
void os::Bsd::signal_sets_init() {
@@ -596,23 +595,24 @@
sigaddset(&unblocked_sigs, SR_signum);
if (!ReduceSignalUsage) {
- if (!os::Bsd::is_sig_ignored(SHUTDOWN1_SIGNAL)) {
+ if (!os::Bsd::is_sig_ignored(SHUTDOWN1_SIGNAL)) {
sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL);
sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL);
- }
- if (!os::Bsd::is_sig_ignored(SHUTDOWN2_SIGNAL)) {
+ }
+ if (!os::Bsd::is_sig_ignored(SHUTDOWN2_SIGNAL)) {
sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL);
sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL);
- }
- if (!os::Bsd::is_sig_ignored(SHUTDOWN3_SIGNAL)) {
+ }
+ if (!os::Bsd::is_sig_ignored(SHUTDOWN3_SIGNAL)) {
sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL);
sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL);
- }
+ }
}
// Fill in signals that are blocked by all but the VM thread.
sigemptyset(&vm_sigs);
- if (!ReduceSignalUsage)
+ if (!ReduceSignalUsage) {
sigaddset(&vm_sigs, BREAK_SIGNAL);
+ }
debug_only(signal_sets_initialized = true);
}
@@ -671,8 +671,8 @@
#ifdef __APPLE__
// library handle for calling objc_registerThreadWithCollector()
// without static linking to the libobjc library
-#define OBJC_LIB "/usr/lib/libobjc.dylib"
-#define OBJC_GCREGISTER "objc_registerThreadWithCollector"
+ #define OBJC_LIB "/usr/lib/libobjc.dylib"
+ #define OBJC_GCREGISTER "objc_registerThreadWithCollector"
typedef void (*objc_registerThreadWithCollector_t)();
extern "C" objc_registerThreadWithCollector_t objc_registerThreadWithCollectorFunction;
objc_registerThreadWithCollector_t objc_registerThreadWithCollectorFunction = NULL;
@@ -846,9 +846,9 @@
// Aborted due to thread limit being reached
if (state == ZOMBIE) {
- thread->set_osthread(NULL);
- delete osthread;
- return false;
+ thread->set_osthread(NULL);
+ delete osthread;
+ return false;
}
// The thread is returned suspended (in state INITIALIZED),
@@ -868,7 +868,7 @@
bool os::create_attached_thread(JavaThread* thread) {
#ifdef ASSERT
- thread->verify_not_published();
+ thread->verify_not_published();
#endif
// Allocate the OSThread object
@@ -919,7 +919,7 @@
// Restore caller's signal mask
sigset_t sigmask = osthread->caller_sigmask();
pthread_sigmask(SIG_SETMASK, &sigmask, NULL);
- }
+ }
delete osthread;
}
@@ -997,9 +997,9 @@
}
#ifndef __APPLE__
-#ifndef CLOCK_MONOTONIC
-#define CLOCK_MONOTONIC (1)
-#endif
+ #ifndef CLOCK_MONOTONIC
+ #define CLOCK_MONOTONIC (1)
+ #endif
#endif
#ifdef __APPLE__
@@ -1023,27 +1023,27 @@
#ifdef __APPLE__
jlong os::javaTimeNanos() {
- const uint64_t tm = mach_absolute_time();
- const uint64_t now = (tm * Bsd::_timebase_info.numer) / Bsd::_timebase_info.denom;
- const uint64_t prev = Bsd::_max_abstime;
- if (now <= prev) {
- return prev; // same or retrograde time;
- }
- const uint64_t obsv = Atomic::cmpxchg(now, (volatile jlong*)&Bsd::_max_abstime, prev);
- assert(obsv >= prev, "invariant"); // Monotonicity
- // If the CAS succeeded then we're done and return "now".
- // If the CAS failed and the observed value "obsv" is >= now then
- // we should return "obsv". If the CAS failed and now > obsv > prv then
- // some other thread raced this thread and installed a new value, in which case
- // we could either (a) retry the entire operation, (b) retry trying to install now
- // or (c) just return obsv. We use (c). No loop is required although in some cases
- // we might discard a higher "now" value in deference to a slightly lower but freshly
- // installed obsv value. That's entirely benign -- it admits no new orderings compared
- // to (a) or (b) -- and greatly reduces coherence traffic.
- // We might also condition (c) on the magnitude of the delta between obsv and now.
- // Avoiding excessive CAS operations to hot RW locations is critical.
- // See https://blogs.oracle.com/dave/entry/cas_and_cache_trivia_invalidate
- return (prev == obsv) ? now : obsv;
+ const uint64_t tm = mach_absolute_time();
+ const uint64_t now = (tm * Bsd::_timebase_info.numer) / Bsd::_timebase_info.denom;
+ const uint64_t prev = Bsd::_max_abstime;
+ if (now <= prev) {
+ return prev; // same or retrograde time;
+ }
+ const uint64_t obsv = Atomic::cmpxchg(now, (volatile jlong*)&Bsd::_max_abstime, prev);
+ assert(obsv >= prev, "invariant"); // Monotonicity
+ // If the CAS succeeded then we're done and return "now".
+ // If the CAS failed and the observed value "obsv" is >= now then
+ // we should return "obsv". If the CAS failed and now > obsv > prv then
+ // some other thread raced this thread and installed a new value, in which case
+ // we could either (a) retry the entire operation, (b) retry trying to install now
+ // or (c) just return obsv. We use (c). No loop is required although in some cases
+ // we might discard a higher "now" value in deference to a slightly lower but freshly
+ // installed obsv value. That's entirely benign -- it admits no new orderings compared
+ // to (a) or (b) -- and greatly reduces coherence traffic.
+ // We might also condition (c) on the magnitude of the delta between obsv and now.
+ // Avoiding excessive CAS operations to hot RW locations is critical.
+ // See https://blogs.oracle.com/dave/entry/cas_and_cache_trivia_invalidate
+ return (prev == obsv) ? now : obsv;
}
#else // __APPLE__
@@ -1176,7 +1176,6 @@
// from src/solaris/hpi/src/system_md.c
size_t os::lasterror(char *buf, size_t len) {
-
if (errno == 0) return 0;
const char *s = ::strerror(errno);
@@ -1246,9 +1245,9 @@
#define JNI_LIB_PREFIX "lib"
#ifdef __APPLE__
-#define JNI_LIB_SUFFIX ".dylib"
+ #define JNI_LIB_SUFFIX ".dylib"
#else
-#define JNI_LIB_SUFFIX ".so"
+ #define JNI_LIB_SUFFIX ".so"
#endif
const char* os::dll_file_extension() { return JNI_LIB_SUFFIX; }
@@ -1269,9 +1268,9 @@
}
return temp_path;
}
-#else /* __APPLE__ */
+#else // __APPLE__
const char* os::get_temp_directory() { return "/tmp"; }
-#endif /* __APPLE__ */
+#endif // __APPLE__
static bool file_exists(const char* filename) {
struct stat statbuf;
@@ -1307,7 +1306,7 @@
continue; // skip the empty path values
}
snprintf(buffer, buflen, "%s/" JNI_LIB_PREFIX "%s" JNI_LIB_SUFFIX,
- pelements[i], fname);
+ pelements[i], fname);
if (file_exists(buffer)) {
retval = true;
break;
@@ -1372,14 +1371,13 @@
if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != NULL) {
if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase),
buf, buflen, offset, dlinfo.dli_fname)) {
- return true;
+ return true;
}
}
// Handle non-dynamic manually:
if (dlinfo.dli_fbase != NULL &&
- Decoder::decode(addr, localbuf, MACH_MAXSYMLEN, offset,
- dlinfo.dli_fbase)) {
+ Decoder::decode(addr, localbuf, MACH_MAXSYMLEN, offset, dlinfo.dli_fbase)) {
if (!Decoder::demangle(localbuf, buf, buflen)) {
jio_snprintf(buf, buflen, "%s", localbuf);
}
@@ -1433,8 +1431,7 @@
return NULL;
}
#else
-void * os::dll_load(const char *filename, char *ebuf, int ebuflen)
-{
+void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
void * result= ::dlopen(filename, RTLD_LAZY);
if (result != NULL) {
// Successful loading
@@ -1465,7 +1462,7 @@
bool failed_to_read_elf_head=
(sizeof(elf_head)!=
- (::read(file_descriptor, &elf_head,sizeof(elf_head))));
+ (::read(file_descriptor, &elf_head,sizeof(elf_head))));
::close(file_descriptor);
if (failed_to_read_elf_head) {
@@ -1482,27 +1479,27 @@
} arch_t;
#ifndef EM_486
- #define EM_486 6 /* Intel 80486 */
+ #define EM_486 6 /* Intel 80486 */
#endif
#ifndef EM_MIPS_RS3_LE
- #define EM_MIPS_RS3_LE 10 /* MIPS */
+ #define EM_MIPS_RS3_LE 10 /* MIPS */
#endif
#ifndef EM_PPC64
- #define EM_PPC64 21 /* PowerPC64 */
+ #define EM_PPC64 21 /* PowerPC64 */
#endif
#ifndef EM_S390
- #define EM_S390 22 /* IBM System/390 */
+ #define EM_S390 22 /* IBM System/390 */
#endif
#ifndef EM_IA_64
- #define EM_IA_64 50 /* HP/Intel IA-64 */
+ #define EM_IA_64 50 /* HP/Intel IA-64 */
#endif
#ifndef EM_X86_64
- #define EM_X86_64 62 /* AMD x86-64 */
+ #define EM_X86_64 62 /* AMD x86-64 */
#endif
static const arch_t arch_array[]={
@@ -1525,33 +1522,33 @@
};
#if (defined IA32)
- static Elf32_Half running_arch_code=EM_386;
+ static Elf32_Half running_arch_code=EM_386;
#elif (defined AMD64)
- static Elf32_Half running_arch_code=EM_X86_64;
+ static Elf32_Half running_arch_code=EM_X86_64;
#elif (defined IA64)
- static Elf32_Half running_arch_code=EM_IA_64;
+ static Elf32_Half running_arch_code=EM_IA_64;
#elif (defined __sparc) && (defined _LP64)
- static Elf32_Half running_arch_code=EM_SPARCV9;
+ static Elf32_Half running_arch_code=EM_SPARCV9;
#elif (defined __sparc) && (!defined _LP64)
- static Elf32_Half running_arch_code=EM_SPARC;
+ static Elf32_Half running_arch_code=EM_SPARC;
#elif (defined __powerpc64__)
- static Elf32_Half running_arch_code=EM_PPC64;
+ static Elf32_Half running_arch_code=EM_PPC64;
#elif (defined __powerpc__)
- static Elf32_Half running_arch_code=EM_PPC;
+ static Elf32_Half running_arch_code=EM_PPC;
#elif (defined ARM)
- static Elf32_Half running_arch_code=EM_ARM;
+ static Elf32_Half running_arch_code=EM_ARM;
#elif (defined S390)
- static Elf32_Half running_arch_code=EM_S390;
+ static Elf32_Half running_arch_code=EM_S390;
#elif (defined ALPHA)
- static Elf32_Half running_arch_code=EM_ALPHA;
+ static Elf32_Half running_arch_code=EM_ALPHA;
#elif (defined MIPSEL)
- static Elf32_Half running_arch_code=EM_MIPS_RS3_LE;
+ static Elf32_Half running_arch_code=EM_MIPS_RS3_LE;
#elif (defined PARISC)
- static Elf32_Half running_arch_code=EM_PARISC;
+ static Elf32_Half running_arch_code=EM_PARISC;
#elif (defined MIPS)
- static Elf32_Half running_arch_code=EM_MIPS;
+ static Elf32_Half running_arch_code=EM_MIPS;
#elif (defined M68K)
- static Elf32_Half running_arch_code=EM_68K;
+ static Elf32_Half running_arch_code=EM_68K;
#else
#error Method os::dll_load requires that one of following is defined:\
IA32, AMD64, IA64, __sparc, __powerpc__, ARM, S390, ALPHA, MIPS, MIPSEL, PARISC, M68K
@@ -1574,7 +1571,7 @@
}
assert(running_arch_index != -1,
- "Didn't find running architecture code (running_arch_code) in arch_array");
+ "Didn't find running architecture code (running_arch_code) in arch_array");
if (running_arch_index == -1) {
// Even though running architecture detection failed
// we may still continue with reporting dlerror() message
@@ -1596,19 +1593,19 @@
if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) {
if (lib_arch.name!=NULL) {
::snprintf(diag_msg_buf, diag_msg_max_length-1,
- " (Possible cause: can't load %s-bit .so on a %s-bit platform)",
- lib_arch.name, arch_array[running_arch_index].name);
+ " (Possible cause: can't load %s-bit .so on a %s-bit platform)",
+ lib_arch.name, arch_array[running_arch_index].name);
} else {
::snprintf(diag_msg_buf, diag_msg_max_length-1,
- " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)",
- lib_arch.code,
- arch_array[running_arch_index].name);
+ " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)",
+ lib_arch.code,
+ arch_array[running_arch_index].name);
}
}
return NULL;
}
-#endif /* !__APPLE__ */
+#endif // !__APPLE__
void* os::get_default_process_handle() {
#ifdef __APPLE__
@@ -1630,7 +1627,7 @@
static bool _print_ascii_file(const char* filename, outputStream* st) {
int fd = ::open(filename, O_RDONLY);
if (fd == -1) {
- return false;
+ return false;
}
char buf[32];
@@ -1797,15 +1794,16 @@
char dli_fname[MAXPATHLEN];
bool ret = dll_address_to_library_name(
- CAST_FROM_FN_PTR(address, os::jvm_path),
- dli_fname, sizeof(dli_fname), NULL);
+ CAST_FROM_FN_PTR(address, os::jvm_path),
+ dli_fname, sizeof(dli_fname), NULL);
assert(ret, "cannot locate libjvm");
char *rp = NULL;
if (ret && dli_fname[0] != '\0') {
rp = realpath(dli_fname, buf);
}
- if (rp == NULL)
+ if (rp == NULL) {
return;
+ }
if (Arguments::sun_java_launcher_is_altjvm()) {
// Support for the java launcher's '-XXaltjvm=<path>' option. Typical
@@ -1834,8 +1832,9 @@
assert(strstr(p, "/libjvm") == p, "invalid library name");
rp = realpath(java_home_var, buf);
- if (rp == NULL)
+ if (rp == NULL) {
return;
+ }
// determine if this is a legacy image or modules image
// modules image doesn't have "jre" subdirectory
@@ -1867,8 +1866,9 @@
} else {
// Fall back to path of current library
rp = realpath(dli_fname, buf);
- if (rp == NULL)
+ if (rp == NULL) {
return;
+ }
}
}
}
@@ -1890,18 +1890,18 @@
static volatile jint sigint_count = 0;
-static void
-UserHandler(int sig, void *siginfo, void *context) {
+static void UserHandler(int sig, void *siginfo, void *context) {
// 4511530 - sem_post is serialized and handled by the manager thread. When
// the program is interrupted by Ctrl-C, SIGINT is sent to every thread. We
// don't want to flood the manager thread with sem_post requests.
- if (sig == SIGINT && Atomic::add(1, &sigint_count) > 1)
- return;
+ if (sig == SIGINT && Atomic::add(1, &sigint_count) > 1) {
+ return;
+ }
// Ctrl-C is pressed during error reporting, likely because the error
// handler fails to abort. Let VM die immediately.
if (sig == SIGINT && is_error_reported()) {
- os::die();
+ os::die();
}
os::signal_notify(sig);
@@ -1935,10 +1935,8 @@
::raise(signal_number);
}
-/*
- * The following code is moved from os.cpp for making this
- * code platform specific, which it is by its very nature.
- */
+// The following code is moved from os.cpp for making this
+// code platform specific, which it is by its very nature.
// Will be modified when max signal is changed to be dynamic
int os::sigexitnum_pd() {
@@ -1951,29 +1949,31 @@
// Bsd(POSIX) specific hand shaking semaphore.
#ifdef __APPLE__
typedef semaphore_t os_semaphore_t;
-#define SEM_INIT(sem, value) semaphore_create(mach_task_self(), &sem, SYNC_POLICY_FIFO, value)
-#define SEM_WAIT(sem) semaphore_wait(sem)
-#define SEM_POST(sem) semaphore_signal(sem)
-#define SEM_DESTROY(sem) semaphore_destroy(mach_task_self(), sem)
+
+ #define SEM_INIT(sem, value) semaphore_create(mach_task_self(), &sem, SYNC_POLICY_FIFO, value)
+ #define SEM_WAIT(sem) semaphore_wait(sem)
+ #define SEM_POST(sem) semaphore_signal(sem)
+ #define SEM_DESTROY(sem) semaphore_destroy(mach_task_self(), sem)
#else
typedef sem_t os_semaphore_t;
-#define SEM_INIT(sem, value) sem_init(&sem, 0, value)
-#define SEM_WAIT(sem) sem_wait(&sem)
-#define SEM_POST(sem) sem_post(&sem)
-#define SEM_DESTROY(sem) sem_destroy(&sem)
+
+ #define SEM_INIT(sem, value) sem_init(&sem, 0, value)
+ #define SEM_WAIT(sem) sem_wait(&sem)
+ #define SEM_POST(sem) sem_post(&sem)
+ #define SEM_DESTROY(sem) sem_destroy(&sem)
#endif
class Semaphore : public StackObj {
- public:
- Semaphore();
- ~Semaphore();
- void signal();
- void wait();
- bool trywait();
- bool timedwait(unsigned int sec, int nsec);
- private:
- jlong currenttime() const;
- os_semaphore_t _semaphore;
+ public:
+ Semaphore();
+ ~Semaphore();
+ void signal();
+ void wait();
+ bool trywait();
+ bool timedwait(unsigned int sec, int nsec);
+ private:
+ jlong currenttime() const;
+ os_semaphore_t _semaphore;
};
Semaphore::Semaphore() : _semaphore(0) {
@@ -1993,9 +1993,9 @@
}
jlong Semaphore::currenttime() const {
- struct timeval tv;
- gettimeofday(&tv, NULL);
- return (tv.tv_sec * NANOSECS_PER_SEC) + (tv.tv_usec * 1000);
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ return (tv.tv_sec * NANOSECS_PER_SEC) + (tv.tv_usec * 1000);
}
#ifdef __APPLE__
@@ -2099,12 +2099,10 @@
// were we externally suspended while we were waiting?
threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
if (threadIsSuspended) {
- //
// The semaphore has been incremented, but while we were waiting
// another thread suspended us. We don't want to continue running
// while suspended because that would surprise the thread that
// suspended us.
- //
::SEM_POST(sig_sem);
thread->java_suspend_self();
@@ -2192,7 +2190,7 @@
}
#else
uintptr_t res = (uintptr_t) ::mmap(addr, size, prot,
- MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0);
+ MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0);
if (res != (uintptr_t) MAP_FAILED) {
return true;
}
@@ -2206,7 +2204,7 @@
}
bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint,
- bool exec) {
+ bool exec) {
// alignment_hint is ignored on this OS
return pd_commit_memory(addr, size, exec);
}
@@ -2274,7 +2272,7 @@
return ::mprotect(addr, size, PROT_NONE) == 0;
#else
uintptr_t res = (uintptr_t) ::mmap(addr, size, PROT_NONE,
- MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE|MAP_ANONYMOUS, -1, 0);
+ MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE|MAP_ANONYMOUS, -1, 0);
return res != (uintptr_t) MAP_FAILED;
#endif
}
@@ -2335,7 +2333,7 @@
}
char* os::pd_reserve_memory(size_t bytes, char* requested_addr,
- size_t alignment_hint) {
+ size_t alignment_hint) {
return anon_mmap(requested_addr, bytes, (requested_addr != NULL));
}
@@ -2405,32 +2403,31 @@
char *addr;
bool warn_on_failure = UseLargePages &&
- (!FLAG_IS_DEFAULT(UseLargePages) ||
- !FLAG_IS_DEFAULT(LargePageSizeInBytes)
- );
+ (!FLAG_IS_DEFAULT(UseLargePages) ||
+ !FLAG_IS_DEFAULT(LargePageSizeInBytes));
// Create a large shared memory region to attach to based on size.
// Currently, size is the total size of the heap
int shmid = shmget(key, bytes, IPC_CREAT|SHM_R|SHM_W);
if (shmid == -1) {
- // Possible reasons for shmget failure:
- // 1. shmmax is too small for Java heap.
- // > check shmmax value: cat /proc/sys/kernel/shmmax
- // > increase shmmax value: echo "0xffffffff" > /proc/sys/kernel/shmmax
- // 2. not enough large page memory.
- // > check available large pages: cat /proc/meminfo
- // > increase amount of large pages:
- // echo new_value > /proc/sys/vm/nr_hugepages
- // Note 1: different Bsd may use different name for this property,
- // e.g. on Redhat AS-3 it is "hugetlb_pool".
- // Note 2: it's possible there's enough physical memory available but
- // they are so fragmented after a long run that they can't
- // coalesce into large pages. Try to reserve large pages when
- // the system is still "fresh".
- if (warn_on_failure) {
- warning("Failed to reserve shared memory (errno = %d).", errno);
- }
- return NULL;
+ // Possible reasons for shmget failure:
+ // 1. shmmax is too small for Java heap.
+ // > check shmmax value: cat /proc/sys/kernel/shmmax
+ // > increase shmmax value: echo "0xffffffff" > /proc/sys/kernel/shmmax
+ // 2. not enough large page memory.
+ // > check available large pages: cat /proc/meminfo
+ // > increase amount of large pages:
+ // echo new_value > /proc/sys/vm/nr_hugepages
+ // Note 1: different Bsd may use different name for this property,
+ // e.g. on Redhat AS-3 it is "hugetlb_pool".
+ // Note 2: it's possible there's enough physical memory available but
+ // they are so fragmented after a long run that they can't
+ // coalesce into large pages. Try to reserve large pages when
+ // the system is still "fresh".
+ if (warn_on_failure) {
+ warning("Failed to reserve shared memory (errno = %d).", errno);
+ }
+ return NULL;
}
// attach to the region
@@ -2444,10 +2441,10 @@
shmctl(shmid, IPC_RMID, NULL);
if ((intptr_t)addr == -1) {
- if (warn_on_failure) {
- warning("Failed to attach shared memory (errno = %d).", err);
- }
- return NULL;
+ if (warn_on_failure) {
+ warning("Failed to attach shared memory (errno = %d).", err);
+ }
+ return NULL;
}
// The memory is committed
@@ -2518,12 +2515,12 @@
// if kernel honors the hint then we can return immediately.
char * addr = anon_mmap(requested_addr, bytes, false);
if (addr == requested_addr) {
- return requested_addr;
+ return requested_addr;
}
if (addr != NULL) {
- // mmap() is successful but it fails to reserve at the requested address
- anon_munmap(addr, bytes);
+ // mmap() is successful but it fails to reserve at the requested address
+ anon_munmap(addr, bytes);
}
int i;
@@ -2585,8 +2582,7 @@
req.tv_sec = 0;
if (ms > 0) {
req.tv_nsec = (ms % 1000) * 1000000;
- }
- else {
+ } else {
req.tv_nsec = 1;
}
@@ -2649,7 +2645,7 @@
31 // 11 CriticalPriority
};
#else
-/* Using Mach high-level priority assignments */
+// Using Mach high-level priority assignments
int os::java_to_os_priority[CriticalPriority + 1] = {
0, // 0 Entry should never be used (MINPRI_USER)
@@ -2702,12 +2698,14 @@
int policy;
pthread_t self = pthread_self();
- if (pthread_getschedparam(self, &policy, &sp) != 0)
+ if (pthread_getschedparam(self, &policy, &sp) != 0) {
return OS_ERR;
+ }
sp.sched_priority = newpri;
- if (pthread_setschedparam(self, policy, &sp) != 0)
+ if (pthread_setschedparam(self, policy, &sp) != 0) {
return OS_ERR;
+ }
return OS_OK;
#else
@@ -2763,7 +2761,6 @@
// - sends signal to end the sigsuspend loop in the SR_handler
//
// Note that the SR_lock plays no role in this suspend/resume protocol.
-//
static void resume_clear_context(OSThread *osthread) {
osthread->set_ucontext(NULL);
@@ -2775,7 +2772,6 @@
osthread->set_siginfo(siginfo);
}
-//
// Handler function invoked when a thread's execution is suspended or
// resumed. We have to be careful that only async-safe functions are
// called here (Note: most pthread functions are not async safe and
@@ -2847,21 +2843,21 @@
static int SR_initialize() {
struct sigaction act;
char *s;
- /* Get signal number to use for suspend/resume */
+ // Get signal number to use for suspend/resume
if ((s = ::getenv("_JAVA_SR_SIGNUM")) != 0) {
int sig = ::strtol(s, 0, 10);
if (sig > 0 || sig < NSIG) {
- SR_signum = sig;
+ SR_signum = sig;
}
}
assert(SR_signum > SIGSEGV && SR_signum > SIGBUS,
- "SR_signum must be greater than max(SIGSEGV, SIGBUS), see 4355769");
+ "SR_signum must be greater than max(SIGSEGV, SIGBUS), see 4355769");
sigemptyset(&SR_sigset);
sigaddset(&SR_sigset, SR_signum);
- /* Set up signal handler for suspend/resume */
+ // Set up signal handler for suspend/resume
act.sa_flags = SA_RESTART|SA_SIGINFO;
act.sa_handler = (void (*)(int)) SR_handler;
@@ -2987,9 +2983,9 @@
// Note that the VM will print warnings if it detects conflicting signal
// handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers".
//
-extern "C" JNIEXPORT int
-JVM_handle_bsd_signal(int signo, siginfo_t* siginfo,
- void* ucontext, int abort_if_unrecognized);
+extern "C" JNIEXPORT int JVM_handle_bsd_signal(int signo, siginfo_t* siginfo,
+ void* ucontext,
+ int abort_if_unrecognized);
void signalHandler(int sig, siginfo_t* info, void* uc) {
assert(info != NULL && uc != NULL, "it must be old kernel");
@@ -3180,12 +3176,12 @@
signal_setting_t begin_signal_setting = NULL;
signal_setting_t end_signal_setting = NULL;
begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t,
- dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting"));
+ dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting"));
if (begin_signal_setting != NULL) {
end_signal_setting = CAST_TO_FN_PTR(signal_setting_t,
- dlsym(RTLD_DEFAULT, "JVM_end_signal_setting"));
+ dlsym(RTLD_DEFAULT, "JVM_end_signal_setting"));
get_signal_action = CAST_TO_FN_PTR(get_signal_t,
- dlsym(RTLD_DEFAULT, "JVM_get_signal_action"));
+ dlsym(RTLD_DEFAULT, "JVM_get_signal_action"));
libjsig_is_loaded = true;
assert(UseSignalChaining, "should enable signal-chaining");
}
@@ -3215,10 +3211,10 @@
// exception handling, while leaving the standard BSD signal handlers functional.
kern_return_t kr;
kr = task_set_exception_ports(mach_task_self(),
- EXC_MASK_BAD_ACCESS | EXC_MASK_ARITHMETIC,
- MACH_PORT_NULL,
- EXCEPTION_STATE_IDENTITY,
- MACHINE_THREAD_STATE);
+ EXC_MASK_BAD_ACCESS | EXC_MASK_ARITHMETIC,
+ MACH_PORT_NULL,
+ EXCEPTION_STATE_IDENTITY,
+ MACHINE_THREAD_STATE);
assert(kr == KERN_SUCCESS, "could not set mach task signal handler");
#endif
@@ -3255,7 +3251,7 @@
// We will never set this flag, and we should
// ignore this flag in our diagnostic
#ifdef SIGNIFICANT_SIGNAL_MASK
-#undef SIGNIFICANT_SIGNAL_MASK
+ #undef SIGNIFICANT_SIGNAL_MASK
#endif
#define SIGNIFICANT_SIGNAL_MASK (~0x04000000)
@@ -3314,7 +3310,7 @@
// Check: is it our handler?
if (handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler) ||
- handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler)) {
+ handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler)) {
// It is our signal handler
// check for flags, reset system-used one!
if ((int)sa.sa_flags != os::Bsd::get_our_sigflags(sig)) {
@@ -3327,9 +3323,12 @@
}
-#define DO_SIGNAL_CHECK(sig) \
- if (!sigismember(&check_signal_done, sig)) \
- os::Bsd::check_signal_handler(sig)
+#define DO_SIGNAL_CHECK(sig) \
+ do { \
+ if (!sigismember(&check_signal_done, sig)) { \
+ os::Bsd::check_signal_handler(sig); \
+ } \
+ } while (0)
// This method is a periodic task to check for misbehaving JNI applications
// under CheckJNI, we can add any periodic checks here
@@ -3444,7 +3443,8 @@
}
}
-extern void report_error(char* file_name, int line_no, char* title, char* format, ...);
+extern void report_error(char* file_name, int line_no, char* title,
+ char* format, ...);
extern bool signal_name(int signo, char* buf, size_t len);
@@ -3462,7 +3462,7 @@
// this is called _before_ the most of global arguments have been parsed
void os::init(void) {
- char dummy; /* used to get a guess on initial stack address */
+ char dummy; // used to get a guess on initial stack address
// first_hrtime = gethrtime();
// With BsdThreads the JavaMain thread pid (primordial thread)
@@ -3515,8 +3515,7 @@
}
// this is called _after_ the global arguments have been parsed
-jint os::init_2(void)
-{
+jint os::init_2(void) {
// Allocate a single page and mark it as readable for safepoint polling
address polling_page = (address) ::mmap(NULL, Bsd::page_size(), PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
guarantee(polling_page != MAP_FAILED, "os::init_2: failed to allocate polling page");
@@ -3524,8 +3523,10 @@
os::set_polling_page(polling_page);
#ifndef PRODUCT
- if (Verbose && PrintMiscellaneous)
- tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page);
+ if (Verbose && PrintMiscellaneous) {
+ tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n",
+ (intptr_t)polling_page);
+ }
#endif
if (!UseMembar) {
@@ -3534,8 +3535,10 @@
os::set_memory_serialize_page(mem_serialize_page);
#ifndef PRODUCT
- if (Verbose && PrintMiscellaneous)
- tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page);
+ if (Verbose && PrintMiscellaneous) {
+ tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n",
+ (intptr_t)mem_serialize_page);
+ }
#endif
}
@@ -3554,22 +3557,22 @@
// Add in 2*BytesPerWord times page size to account for VM stack during
// class initialization depending on 32 or 64 bit VM.
os::Bsd::min_stack_allowed = MAX2(os::Bsd::min_stack_allowed,
- (size_t)(StackYellowPages+StackRedPages+StackShadowPages+
- 2*BytesPerWord COMPILER2_PRESENT(+1)) * Bsd::page_size());
+ (size_t)(StackYellowPages+StackRedPages+StackShadowPages+
+ 2*BytesPerWord COMPILER2_PRESENT(+1)) * Bsd::page_size());
size_t threadStackSizeInBytes = ThreadStackSize * K;
if (threadStackSizeInBytes != 0 &&
threadStackSizeInBytes < os::Bsd::min_stack_allowed) {
- tty->print_cr("\nThe stack size specified is too small, "
- "Specify at least %dk",
- os::Bsd::min_stack_allowed/ K);
- return JNI_ERR;
+ tty->print_cr("\nThe stack size specified is too small, "
+ "Specify at least %dk",
+ os::Bsd::min_stack_allowed/ K);
+ return JNI_ERR;
}
// Make the stack size a multiple of the page size so that
// the yellow/red zones can be guarded.
JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes,
- vm_page_size()));
+ vm_page_size()));
if (MaxFDLimit) {
// set the number of file descriptors to max. print out error
@@ -3577,8 +3580,9 @@
struct rlimit nbr_files;
int status = getrlimit(RLIMIT_NOFILE, &nbr_files);
if (status != 0) {
- if (PrintMiscellaneous && (Verbose || WizardMode))
+ if (PrintMiscellaneous && (Verbose || WizardMode)) {
perror("os::init_2 getrlimit failed");
+ }
} else {
nbr_files.rlim_cur = nbr_files.rlim_max;
@@ -3591,8 +3595,9 @@
status = setrlimit(RLIMIT_NOFILE, &nbr_files);
if (status != 0) {
- if (PrintMiscellaneous && (Verbose || WizardMode))
+ if (PrintMiscellaneous && (Verbose || WizardMode)) {
perror("os::init_2 setrlimit failed");
+ }
}
}
}
@@ -3635,16 +3640,17 @@
// Mark the polling page as unreadable
void os::make_polling_page_unreadable(void) {
- if (!guard_memory((char*)_polling_page, Bsd::page_size()))
+ if (!guard_memory((char*)_polling_page, Bsd::page_size())) {
fatal("Could not disable polling page");
-};
+ }
+}
// Mark the polling page as readable
void os::make_polling_page_readable(void) {
if (!bsd_mprotect((char *)_polling_page, Bsd::page_size(), PROT_READ)) {
fatal("Could not enable polling page");
}
-};
+}
int os::active_processor_count() {
return _processor_count;
@@ -3682,12 +3688,12 @@
///
class PcFetcher : public os::SuspendedThreadTask {
-public:
+ public:
PcFetcher(Thread* thread) : os::SuspendedThreadTask(thread) {}
ExtendedPC result();
-protected:
+ protected:
void do_task(const os::SuspendedThreadTaskContext& context);
-private:
+ private:
ExtendedPC _epc;
};
@@ -3719,8 +3725,9 @@
return fetcher.result();
}
-int os::Bsd::safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime)
-{
+int os::Bsd::safe_cond_timedwait(pthread_cond_t *_cond,
+ pthread_mutex_t *_mutex,
+ const struct timespec *_abstime) {
return pthread_cond_timedwait(_cond, _mutex, _abstime);
}
@@ -3734,7 +3741,7 @@
st->print(PTR_FORMAT ": ", addr);
if (dlinfo.dli_sname != NULL && dlinfo.dli_saddr != NULL) {
st->print("%s+%#x", dlinfo.dli_sname,
- addr - (intptr_t)dlinfo.dli_saddr);
+ addr - (intptr_t)dlinfo.dli_saddr);
} else if (dlinfo.dli_fbase != NULL) {
st->print("<offset %#x>", addr - (intptr_t)dlinfo.dli_fbase);
} else {
@@ -3757,8 +3764,9 @@
if (begin < lowest) begin = lowest;
Dl_info dlinfo2;
if (dladdr(end, &dlinfo2) != 0 && dlinfo2.dli_saddr != dlinfo.dli_saddr
- && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin)
+ && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) {
end = (address) dlinfo2.dli_saddr;
+ }
Disassembler::decode(begin, end, st);
}
return true;
@@ -3772,9 +3780,9 @@
// This does not do anything on Bsd. This is basically a hook for being
// able to use structured exception handling (thread-local exception filters)
// on, e.g., Win32.
-void
-os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method,
- JavaCallArguments* args, Thread* thread) {
+void os::os_exception_wrapper(java_call_t f, JavaValue* value,
+ methodHandle* method, JavaCallArguments* args,
+ Thread* thread) {
f(value, method, args, thread);
}
@@ -3814,11 +3822,6 @@
return true;
}
-ATTRIBUTE_PRINTF(3, 0)
-int local_vsnprintf(char* buf, size_t count, const char* format, va_list args) {
- return ::vsnprintf(buf, count, format, args);
-}
-
// Is a (classpath) directory empty?
bool os::dir_is_empty(const char* path) {
DIR *dir = NULL;
@@ -3827,7 +3830,7 @@
dir = opendir(path);
if (dir == NULL) return true;
- /* Scan the directory */
+ // Scan the directory
bool result = true;
char buf[sizeof(struct dirent) + MAX_PATH];
while (result && (ptr = ::readdir(dir)) != NULL) {
@@ -3843,7 +3846,7 @@
// from src/solaris/hpi/src/system_md.c
#ifndef O_DELETE
-#define O_DELETE 0x10000
+ #define O_DELETE 0x10000
#endif
// Open a file. Unlink the file immediately after open returns
@@ -3851,7 +3854,6 @@
// O_DELETE is used only in j2se/src/share/native/java/util/zip/ZipFile.c
int os::open(const char *path, int oflag, int mode) {
-
if (strlen(path) > MAX_PATH - 1) {
errno = ENAMETOOLONG;
return -1;
@@ -3863,7 +3865,7 @@
fd = ::open(path, oflag, mode);
if (fd == -1) return -1;
- //If the open succeeded, the file might still be a directory
+ // If the open succeeded, the file might still be a directory
{
struct stat buf;
int ret = ::fstat(fd, &buf);
@@ -3881,34 +3883,34 @@
}
}
- /*
- * All file descriptors that are opened in the JVM and not
- * specifically destined for a subprocess should have the
- * close-on-exec flag set. If we don't set it, then careless 3rd
- * party native code might fork and exec without closing all
- * appropriate file descriptors (e.g. as we do in closeDescriptors in
- * UNIXProcess.c), and this in turn might:
- *
- * - cause end-of-file to fail to be detected on some file
- * descriptors, resulting in mysterious hangs, or
- *
- * - might cause an fopen in the subprocess to fail on a system
- * suffering from bug 1085341.
- *
- * (Yes, the default setting of the close-on-exec flag is a Unix
- * design flaw)
- *
- * See:
- * 1085341: 32-bit stdio routines should support file descriptors >255
- * 4843136: (process) pipe file descriptor from Runtime.exec not being closed
- * 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9
- */
+ // All file descriptors that are opened in the JVM and not
+ // specifically destined for a subprocess should have the
+ // close-on-exec flag set. If we don't set it, then careless 3rd
+ // party native code might fork and exec without closing all
+ // appropriate file descriptors (e.g. as we do in closeDescriptors in
+ // UNIXProcess.c), and this in turn might:
+ //
+ // - cause end-of-file to fail to be detected on some file
+ // descriptors, resulting in mysterious hangs, or
+ //
+ // - might cause an fopen in the subprocess to fail on a system
+ // suffering from bug 1085341.
+ //
+ // (Yes, the default setting of the close-on-exec flag is a Unix
+ // design flaw)
+ //
+ // See:
+ // 1085341: 32-bit stdio routines should support file descriptors >255
+ // 4843136: (process) pipe file descriptor from Runtime.exec not being closed
+ // 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9
+ //
#ifdef FD_CLOEXEC
- {
- int flags = ::fcntl(fd, F_GETFD);
- if (flags != -1)
- ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
+ {
+ int flags = ::fcntl(fd, F_GETFD);
+ if (flags != -1) {
+ ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
}
+ }
#endif
if (o_delete != 0) {
@@ -3948,11 +3950,9 @@
if (::fstat(fd, &buf) >= 0) {
mode = buf.st_mode;
if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
- /*
- * XXX: is the following call interruptible? If so, this might
- * need to go through the INTERRUPT_IO() wrapper as for other
- * blocking, interruptible calls in this file.
- */
+ // XXX: is the following call interruptible? If so, this might
+ // need to go through the INTERRUPT_IO() wrapper as for other
+ // blocking, interruptible calls in this file.
int n;
if (::ioctl(fd, FIONREAD, &n) >= 0) {
*bytes = n;
@@ -3972,23 +3972,24 @@
}
int os::socket_available(int fd, jint *pbytes) {
- if (fd < 0)
- return OS_OK;
-
- int ret;
-
- RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret);
-
- //%% note ioctl can return 0 when successful, JVM_SocketAvailable
- // is expected to return 0 on failure and 1 on success to the jdk.
-
- return (ret == OS_ERR) ? 0 : 1;
+ if (fd < 0) {
+ return OS_OK;
+ }
+
+ int ret;
+
+ RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret);
+
+ //%% note ioctl can return 0 when successful, JVM_SocketAvailable
+ // is expected to return 0 on failure and 1 on success to the jdk.
+
+ return (ret == OS_ERR) ? 0 : 1;
}
// Map a block of memory.
char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset,
- char *addr, size_t bytes, bool read_only,
- bool allow_exec) {
+ char *addr, size_t bytes, bool read_only,
+ bool allow_exec) {
int prot;
int flags;
@@ -4019,8 +4020,8 @@
// Remap a block of memory.
char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset,
- char *addr, size_t bytes, bool read_only,
- bool allow_exec) {
+ char *addr, size_t bytes, bool read_only,
+ bool allow_exec) {
// same as map_memory() on this OS
return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only,
allow_exec);
@@ -4075,8 +4076,9 @@
mach_thread = thread->osthread()->thread_id();
kr = thread_info(mach_thread, THREAD_BASIC_INFO, (thread_info_t)&tinfo, &tcount);
- if (kr != KERN_SUCCESS)
+ if (kr != KERN_SUCCESS) {
return -1;
+ }
if (user_sys_cpu_time) {
jlong nanos;
@@ -4139,7 +4141,7 @@
}
} else {
jio_fprintf(stderr,
- "Could not open pause file '%s', continuing immediately.\n", filename);
+ "Could not open pause file '%s', continuing immediately.\n", filename);
}
}
@@ -4207,7 +4209,8 @@
// abstime will be the absolute timeout time
// TODO: replace compute_abstime() with unpackTime()
-static struct timespec* compute_abstime(struct timespec* abstime, jlong millis) {
+static struct timespec* compute_abstime(struct timespec* abstime,
+ jlong millis) {
if (millis < 0) millis = 0;
struct timeval now;
int status = gettimeofday(&now, NULL);
@@ -4235,28 +4238,28 @@
int v;
for (;;) {
- v = _Event;
- if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
+ v = _Event;
+ if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
}
guarantee(v >= 0, "invariant");
if (v == 0) {
- // Do this the hard way by blocking ...
- int status = pthread_mutex_lock(_mutex);
- assert_status(status == 0, status, "mutex_lock");
- guarantee(_nParked == 0, "invariant");
- ++_nParked;
- while (_Event < 0) {
- status = pthread_cond_wait(_cond, _mutex);
- // for some reason, under 2.7 lwp_cond_wait() may return ETIME ...
- // Treat this the same as if the wait was interrupted
- if (status == ETIMEDOUT) { status = EINTR; }
- assert_status(status == 0 || status == EINTR, status, "cond_wait");
- }
- --_nParked;
+ // Do this the hard way by blocking ...
+ int status = pthread_mutex_lock(_mutex);
+ assert_status(status == 0, status, "mutex_lock");
+ guarantee(_nParked == 0, "invariant");
+ ++_nParked;
+ while (_Event < 0) {
+ status = pthread_cond_wait(_cond, _mutex);
+ // for some reason, under 2.7 lwp_cond_wait() may return ETIME ...
+ // Treat this the same as if the wait was interrupted
+ if (status == ETIMEDOUT) { status = EINTR; }
+ assert_status(status == 0 || status == EINTR, status, "cond_wait");
+ }
+ --_nParked;
_Event = 0;
- status = pthread_mutex_unlock(_mutex);
- assert_status(status == 0, status, "mutex_unlock");
+ status = pthread_mutex_unlock(_mutex);
+ assert_status(status == 0, status, "mutex_unlock");
// Paranoia to ensure our locked and lock-free paths interact
// correctly with each other.
OrderAccess::fence();
@@ -4269,8 +4272,8 @@
int v;
for (;;) {
- v = _Event;
- if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
+ v = _Event;
+ if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
}
guarantee(v >= 0, "invariant");
if (v != 0) return OS_OK;
@@ -4314,7 +4317,7 @@
}
--_nParked;
if (_Event >= 0) {
- ret = OS_OK;
+ ret = OS_OK;
}
_Event = 0;
status = pthread_mutex_unlock(_mutex);
@@ -4370,36 +4373,33 @@
// JSR166
// -------------------------------------------------------
-/*
- * The solaris and bsd implementations of park/unpark are fairly
- * conservative for now, but can be improved. They currently use a
- * mutex/condvar pair, plus a a count.
- * Park decrements count if > 0, else does a condvar wait. Unpark
- * sets count to 1 and signals condvar. Only one thread ever waits
- * on the condvar. Contention seen when trying to park implies that someone
- * is unparking you, so don't wait. And spurious returns are fine, so there
- * is no need to track notifications.
- */
+// The solaris and bsd implementations of park/unpark are fairly
+// conservative for now, but can be improved. They currently use a
+// mutex/condvar pair, plus a a count.
+// Park decrements count if > 0, else does a condvar wait. Unpark
+// sets count to 1 and signals condvar. Only one thread ever waits
+// on the condvar. Contention seen when trying to park implies that someone
+// is unparking you, so don't wait. And spurious returns are fine, so there
+// is no need to track notifications.
#define MAX_SECS 100000000
-/*
- * This code is common to bsd and solaris and will be moved to a
- * common place in dolphin.
- *
- * The passed in time value is either a relative time in nanoseconds
- * or an absolute time in milliseconds. Either way it has to be unpacked
- * into suitable seconds and nanoseconds components and stored in the
- * given timespec structure.
- * Given time is a 64-bit value and the time_t used in the timespec is only
- * a signed-32-bit value (except on 64-bit Bsd) we have to watch for
- * overflow if times way in the future are given. Further on Solaris versions
- * prior to 10 there is a restriction (see cond_timedwait) that the specified
- * number of seconds, in abstime, is less than current_time + 100,000,000.
- * As it will be 28 years before "now + 100000000" will overflow we can
- * ignore overflow and just impose a hard-limit on seconds using the value
- * of "now + 100,000,000". This places a limit on the timeout of about 3.17
- * years from "now".
- */
+
+// This code is common to bsd and solaris and will be moved to a
+// common place in dolphin.
+//
+// The passed in time value is either a relative time in nanoseconds
+// or an absolute time in milliseconds. Either way it has to be unpacked
+// into suitable seconds and nanoseconds components and stored in the
+// given timespec structure.
+// Given time is a 64-bit value and the time_t used in the timespec is only
+// a signed-32-bit value (except on 64-bit Bsd) we have to watch for
+// overflow if times way in the future are given. Further on Solaris versions
+// prior to 10 there is a restriction (see cond_timedwait) that the specified
+// number of seconds, in abstime, is less than current_time + 100,000,000.
+// As it will be 28 years before "now + 100000000" will overflow we can
+// ignore overflow and just impose a hard-limit on seconds using the value
+// of "now + 100,000,000". This places a limit on the timeout of about 3.17
+// years from "now".
static void unpackTime(struct timespec* absTime, bool isAbsolute, jlong time) {
assert(time > 0, "convertTime");
@@ -4414,19 +4414,16 @@
jlong secs = time / 1000;
if (secs > max_secs) {
absTime->tv_sec = max_secs;
- }
- else {
+ } else {
absTime->tv_sec = secs;
}
absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC;
- }
- else {
+ } else {
jlong secs = time / NANOSECS_PER_SEC;
if (secs >= MAX_SECS) {
absTime->tv_sec = max_secs;
absTime->tv_nsec = 0;
- }
- else {
+ } else {
absTime->tv_sec = now.tv_sec + secs;
absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000;
if (absTime->tv_nsec >= NANOSECS_PER_SEC) {
@@ -4544,17 +4541,17 @@
const int s = _counter;
_counter = 1;
if (s < 1) {
- if (WorkAroundNPTLTimedWaitHang) {
- status = pthread_cond_signal(_cond);
- assert(status == 0, "invariant");
- status = pthread_mutex_unlock(_mutex);
- assert(status == 0, "invariant");
- } else {
- status = pthread_mutex_unlock(_mutex);
- assert(status == 0, "invariant");
- status = pthread_cond_signal(_cond);
- assert(status == 0, "invariant");
- }
+ if (WorkAroundNPTLTimedWaitHang) {
+ status = pthread_cond_signal(_cond);
+ assert(status == 0, "invariant");
+ status = pthread_mutex_unlock(_mutex);
+ assert(status == 0, "invariant");
+ } else {
+ status = pthread_mutex_unlock(_mutex);
+ assert(status == 0, "invariant");
+ status = pthread_cond_signal(_cond);
+ assert(status == 0, "invariant");
+ }
} else {
pthread_mutex_unlock(_mutex);
assert(status == 0, "invariant");
@@ -4562,10 +4559,10 @@
}
-/* Darwin has no "environ" in a dynamic library. */
+// Darwin has no "environ" in a dynamic library.
#ifdef __APPLE__
-#include <crt_externs.h>
-#define environ (*_NSGetEnviron())
+ #include <crt_externs.h>
+ #define environ (*_NSGetEnviron())
#else
extern char** environ;
#endif
@@ -4612,26 +4609,26 @@
// Wait for the child process to exit. This returns immediately if
// the child has already exited. */
while (waitpid(pid, &status, 0) < 0) {
- switch (errno) {
- case ECHILD: return 0;
- case EINTR: break;
- default: return -1;
- }
+ switch (errno) {
+ case ECHILD: return 0;
+ case EINTR: break;
+ default: return -1;
+ }
}
if (WIFEXITED(status)) {
- // The child exited normally; get its exit code.
- return WEXITSTATUS(status);
+ // The child exited normally; get its exit code.
+ return WEXITSTATUS(status);
} else if (WIFSIGNALED(status)) {
- // The child exited because of a signal
- // The best value to return is 0x80 + signal number,
- // because that is what all Unix shells do, and because
- // it allows callers to distinguish between process exit and
- // process death by signal.
- return 0x80 + WTERMSIG(status);
+ // The child exited because of a signal
+ // The best value to return is 0x80 + signal number,
+ // because that is what all Unix shells do, and because
+ // it allows callers to distinguish between process exit and
+ // process death by signal.
+ return 0x80 + WTERMSIG(status);
} else {
- // Unknown exit code; pass it through
- return status;
+ // Unknown exit code; pass it through
+ return status;
}
}
}
@@ -4646,40 +4643,46 @@
//
bool os::is_headless_jre() {
#ifdef __APPLE__
- // We no longer build headless-only on Mac OS X
- return false;
+ // We no longer build headless-only on Mac OS X
+ return false;
#else
- struct stat statbuf;
- char buf[MAXPATHLEN];
- char libmawtpath[MAXPATHLEN];
- const char *xawtstr = "/xawt/libmawt" JNI_LIB_SUFFIX;
- const char *new_xawtstr = "/libawt_xawt" JNI_LIB_SUFFIX;
- char *p;
-
- // Get path to libjvm.so
- os::jvm_path(buf, sizeof(buf));
-
- // Get rid of libjvm.so
- p = strrchr(buf, '/');
- if (p == NULL) return false;
- else *p = '\0';
-
- // Get rid of client or server
- p = strrchr(buf, '/');
- if (p == NULL) return false;
- else *p = '\0';
-
- // check xawt/libmawt.so
- strcpy(libmawtpath, buf);
- strcat(libmawtpath, xawtstr);
- if (::stat(libmawtpath, &statbuf) == 0) return false;
-
- // check libawt_xawt.so
- strcpy(libmawtpath, buf);
- strcat(libmawtpath, new_xawtstr);
- if (::stat(libmawtpath, &statbuf) == 0) return false;
-
- return true;
+ struct stat statbuf;
+ char buf[MAXPATHLEN];
+ char libmawtpath[MAXPATHLEN];
+ const char *xawtstr = "/xawt/libmawt" JNI_LIB_SUFFIX;
+ const char *new_xawtstr = "/libawt_xawt" JNI_LIB_SUFFIX;
+ char *p;
+
+ // Get path to libjvm.so
+ os::jvm_path(buf, sizeof(buf));
+
+ // Get rid of libjvm.so
+ p = strrchr(buf, '/');
+ if (p == NULL) {
+ return false;
+ } else {
+ *p = '\0';
+ }
+
+ // Get rid of client or server
+ p = strrchr(buf, '/');
+ if (p == NULL) {
+ return false;
+ } else {
+ *p = '\0';
+ }
+
+ // check xawt/libmawt.so
+ strcpy(libmawtpath, buf);
+ strcat(libmawtpath, xawtstr);
+ if (::stat(libmawtpath, &statbuf) == 0) return false;
+
+ // check libawt_xawt.so
+ strcpy(libmawtpath, buf);
+ strcat(libmawtpath, new_xawtstr);
+ if (::stat(libmawtpath, &statbuf) == 0) return false;
+
+ return true;
#endif
}
--- a/hotspot/src/os/bsd/vm/os_bsd.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/bsd/vm/os_bsd.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -30,8 +30,8 @@
// Information about the protection of the page at address '0' on this os.
static bool zero_page_read_protected() { return true; }
-/* pthread_getattr_np comes with BsdThreads-0.9-7 on RedHat 7.1 */
-typedef int (*pthread_getattr_func_type) (pthread_t, pthread_attr_t *);
+// pthread_getattr_np comes with BsdThreads-0.9-7 on RedHat 7.1
+typedef int (*pthread_getattr_func_type)(pthread_t, pthread_attr_t *);
#ifdef __APPLE__
// Mac OS X doesn't support clock_gettime. Stub out the type, it is
@@ -108,7 +108,7 @@
// that file provides extensions to the os class and not the
// Bsd class.
static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc,
- intptr_t** ret_sp, intptr_t** ret_fp);
+ intptr_t** ret_sp, intptr_t** ret_fp);
// This boolean allows users to forward their own non-matching signals
// to JVM_handle_bsd_signal, harmlessly.
@@ -147,7 +147,7 @@
// BsdThreads work-around for 6292965
static int safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime);
-private:
+ private:
typedef int (*sched_getcpu_func_t)(void);
typedef int (*numa_node_to_cpus_func_t)(int node, unsigned long *buffer, int bufferlen);
typedef int (*numa_max_node_func_t)(void);
@@ -170,7 +170,7 @@
static void set_numa_tonode_memory(numa_tonode_memory_func_t func) { _numa_tonode_memory = func; }
static void set_numa_interleave_memory(numa_interleave_memory_func_t func) { _numa_interleave_memory = func; }
static void set_numa_all_nodes(unsigned long* ptr) { _numa_all_nodes = ptr; }
-public:
+ public:
static int sched_getcpu() { return _sched_getcpu != NULL ? _sched_getcpu() : -1; }
static int numa_node_to_cpus(int node, unsigned long *buffer, int bufferlen) {
return _numa_node_to_cpus != NULL ? _numa_node_to_cpus(node, buffer, bufferlen) : -1;
@@ -190,55 +190,55 @@
class PlatformEvent : public CHeapObj<mtInternal> {
- private:
- double CachePad[4]; // increase odds that _mutex is sole occupant of cache line
- volatile int _Event;
- volatile int _nParked;
- pthread_mutex_t _mutex[1];
- pthread_cond_t _cond[1];
- double PostPad[2];
- Thread * _Assoc;
+ private:
+ double CachePad[4]; // increase odds that _mutex is sole occupant of cache line
+ volatile int _Event;
+ volatile int _nParked;
+ pthread_mutex_t _mutex[1];
+ pthread_cond_t _cond[1];
+ double PostPad[2];
+ Thread * _Assoc;
- public: // TODO-FIXME: make dtor private
- ~PlatformEvent() { guarantee(0, "invariant"); }
+ public: // TODO-FIXME: make dtor private
+ ~PlatformEvent() { guarantee(0, "invariant"); }
- public:
- PlatformEvent() {
- int status;
- status = pthread_cond_init (_cond, NULL);
- assert_status(status == 0, status, "cond_init");
- status = pthread_mutex_init (_mutex, NULL);
- assert_status(status == 0, status, "mutex_init");
- _Event = 0;
- _nParked = 0;
- _Assoc = NULL;
- }
+ public:
+ PlatformEvent() {
+ int status;
+ status = pthread_cond_init(_cond, NULL);
+ assert_status(status == 0, status, "cond_init");
+ status = pthread_mutex_init(_mutex, NULL);
+ assert_status(status == 0, status, "mutex_init");
+ _Event = 0;
+ _nParked = 0;
+ _Assoc = NULL;
+ }
- // Use caution with reset() and fired() -- they may require MEMBARs
- void reset() { _Event = 0; }
- int fired() { return _Event; }
- void park();
- void unpark();
- int park(jlong millis);
- void SetAssociation(Thread * a) { _Assoc = a; }
+ // Use caution with reset() and fired() -- they may require MEMBARs
+ void reset() { _Event = 0; }
+ int fired() { return _Event; }
+ void park();
+ void unpark();
+ int park(jlong millis);
+ void SetAssociation(Thread * a) { _Assoc = a; }
};
class PlatformParker : public CHeapObj<mtInternal> {
- protected:
- pthread_mutex_t _mutex[1];
- pthread_cond_t _cond[1];
+ protected:
+ pthread_mutex_t _mutex[1];
+ pthread_cond_t _cond[1];
- public: // TODO-FIXME: make dtor private
- ~PlatformParker() { guarantee(0, "invariant"); }
+ public: // TODO-FIXME: make dtor private
+ ~PlatformParker() { guarantee(0, "invariant"); }
- public:
- PlatformParker() {
- int status;
- status = pthread_cond_init (_cond, NULL);
- assert_status(status == 0, status, "cond_init");
- status = pthread_mutex_init (_mutex, NULL);
- assert_status(status == 0, status, "mutex_init");
- }
+ public:
+ PlatformParker() {
+ int status;
+ status = pthread_cond_init(_cond, NULL);
+ assert_status(status == 0, status, "cond_init");
+ status = pthread_mutex_init(_mutex, NULL);
+ assert_status(status == 0, status, "mutex_init");
+ }
};
#endif // OS_BSD_VM_OS_BSD_HPP
--- a/hotspot/src/os/bsd/vm/os_bsd.inline.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/bsd/vm/os_bsd.inline.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -274,4 +274,8 @@
#endif
}
+inline void os::exit(int num) {
+ ::exit(num);
+}
+
#endif // OS_BSD_VM_OS_BSD_INLINE_HPP
--- a/hotspot/src/os/linux/vm/os_linux.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/linux/vm/os_linux.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -109,7 +109,7 @@
// if RUSAGE_THREAD for getrusage() has not been defined, do it here. The code calling
// getrusage() is prepared to handle the associated failure.
#ifndef RUSAGE_THREAD
-#define RUSAGE_THREAD (1) /* only the calling thread */
+ #define RUSAGE_THREAD (1) /* only the calling thread */
#endif
#define MAX_PATH (2 * K)
@@ -150,13 +150,13 @@
static pid_t _initial_pid = 0;
-/* Signal number used to suspend/resume a thread */
-
-/* do not use any signal number less than SIGSEGV, see 4355769 */
+// Signal number used to suspend/resume a thread
+
+// do not use any signal number less than SIGSEGV, see 4355769
static int SR_signum = SIGUSR2;
sigset_t SR_sigset;
-/* Used to protect dlsym() calls */
+// Used to protect dlsym() calls
static pthread_mutex_t dl_mutex;
// Declarations
@@ -240,17 +240,17 @@
#ifndef SYS_gettid
// i386: 224, ia64: 1105, amd64: 186, sparc 143
-#ifdef __ia64__
-#define SYS_gettid 1105
-#elif __i386__
-#define SYS_gettid 224
-#elif __amd64__
-#define SYS_gettid 186
-#elif __sparc__
-#define SYS_gettid 143
-#else
-#error define gettid for the arch
-#endif
+ #ifdef __ia64__
+ #define SYS_gettid 1105
+ #elif __i386__
+ #define SYS_gettid 224
+ #elif __amd64__
+ #define SYS_gettid 186
+ #elif __sparc__
+ #define SYS_gettid 143
+ #else
+ #error define gettid for the arch
+ #endif
#endif
// Cpu architecture string
@@ -269,13 +269,13 @@
#elif defined(PPC64)
static char cpu_arch[] = "ppc64";
#elif defined(SPARC)
-# ifdef _LP64
+ #ifdef _LP64
static char cpu_arch[] = "sparcv9";
-# else
+ #else
static char cpu_arch[] = "sparc";
-# endif
+ #endif
#else
-#error Add appropriate cpu_arch setting
+ #error Add appropriate cpu_arch setting
#endif
@@ -290,10 +290,10 @@
pid_t os::Linux::gettid() {
int rslt = syscall(SYS_gettid);
if (rslt == -1) {
- // old kernel, no NPTL support
- return getpid();
+ // old kernel, no NPTL support
+ return getpid();
} else {
- return (pid_t)rslt;
+ return (pid_t)rslt;
}
}
@@ -350,16 +350,16 @@
// Important note: if the location of libjvm.so changes this
// code needs to be changed accordingly.
-// See ld(1):
-// The linker uses the following search paths to locate required
-// shared libraries:
-// 1: ...
-// ...
-// 7: The default directories, normally /lib and /usr/lib.
+ // See ld(1):
+ // The linker uses the following search paths to locate required
+ // shared libraries:
+ // 1: ...
+ // ...
+ // 7: The default directories, normally /lib and /usr/lib.
#if defined(AMD64) || defined(_LP64) && (defined(SPARC) || defined(PPC) || defined(S390))
-#define DEFAULT_LIBPATH "/usr/lib64:/lib64:/lib:/usr/lib"
+ #define DEFAULT_LIBPATH "/usr/lib64:/lib64:/lib:/usr/lib"
#else
-#define DEFAULT_LIBPATH "/lib:/usr/lib"
+ #define DEFAULT_LIBPATH "/lib:/usr/lib"
#endif
// Base path of extensions installed on the system.
@@ -465,14 +465,15 @@
static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs;
bool os::Linux::is_sig_ignored(int sig) {
- struct sigaction oact;
- sigaction(sig, (struct sigaction*)NULL, &oact);
- void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction)
- : CAST_FROM_FN_PTR(void*, oact.sa_handler);
- if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN))
- return true;
- else
- return false;
+ struct sigaction oact;
+ sigaction(sig, (struct sigaction*)NULL, &oact);
+ void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction)
+ : CAST_FROM_FN_PTR(void*, oact.sa_handler);
+ if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN)) {
+ return true;
+ } else {
+ return false;
+ }
}
void os::Linux::signal_sets_init() {
@@ -503,23 +504,24 @@
sigaddset(&unblocked_sigs, SR_signum);
if (!ReduceSignalUsage) {
- if (!os::Linux::is_sig_ignored(SHUTDOWN1_SIGNAL)) {
+ if (!os::Linux::is_sig_ignored(SHUTDOWN1_SIGNAL)) {
sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL);
sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL);
- }
- if (!os::Linux::is_sig_ignored(SHUTDOWN2_SIGNAL)) {
+ }
+ if (!os::Linux::is_sig_ignored(SHUTDOWN2_SIGNAL)) {
sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL);
sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL);
- }
- if (!os::Linux::is_sig_ignored(SHUTDOWN3_SIGNAL)) {
+ }
+ if (!os::Linux::is_sig_ignored(SHUTDOWN3_SIGNAL)) {
sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL);
sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL);
- }
+ }
}
// Fill in signals that are blocked by all but the VM thread.
sigemptyset(&vm_sigs);
- if (!ReduceSignalUsage)
+ if (!ReduceSignalUsage) {
sigaddset(&vm_sigs, BREAK_SIGNAL);
+ }
debug_only(signal_sets_initialized = true);
}
@@ -574,59 +576,59 @@
// and _CS_GNU_LIBPTHREAD_VERSION are supported in glibc >= 2.3.2. Use a
// generic name for earlier versions.
// Define macros here so we can build HotSpot on old systems.
-# ifndef _CS_GNU_LIBC_VERSION
-# define _CS_GNU_LIBC_VERSION 2
-# endif
-# ifndef _CS_GNU_LIBPTHREAD_VERSION
-# define _CS_GNU_LIBPTHREAD_VERSION 3
-# endif
+#ifndef _CS_GNU_LIBC_VERSION
+ #define _CS_GNU_LIBC_VERSION 2
+#endif
+#ifndef _CS_GNU_LIBPTHREAD_VERSION
+ #define _CS_GNU_LIBPTHREAD_VERSION 3
+#endif
size_t n = confstr(_CS_GNU_LIBC_VERSION, NULL, 0);
if (n > 0) {
- char *str = (char *)malloc(n, mtInternal);
- confstr(_CS_GNU_LIBC_VERSION, str, n);
- os::Linux::set_glibc_version(str);
+ char *str = (char *)malloc(n, mtInternal);
+ confstr(_CS_GNU_LIBC_VERSION, str, n);
+ os::Linux::set_glibc_version(str);
} else {
- // _CS_GNU_LIBC_VERSION is not supported, try gnu_get_libc_version()
- static char _gnu_libc_version[32];
- jio_snprintf(_gnu_libc_version, sizeof(_gnu_libc_version),
- "glibc %s %s", gnu_get_libc_version(), gnu_get_libc_release());
- os::Linux::set_glibc_version(_gnu_libc_version);
+ // _CS_GNU_LIBC_VERSION is not supported, try gnu_get_libc_version()
+ static char _gnu_libc_version[32];
+ jio_snprintf(_gnu_libc_version, sizeof(_gnu_libc_version),
+ "glibc %s %s", gnu_get_libc_version(), gnu_get_libc_release());
+ os::Linux::set_glibc_version(_gnu_libc_version);
}
n = confstr(_CS_GNU_LIBPTHREAD_VERSION, NULL, 0);
if (n > 0) {
- char *str = (char *)malloc(n, mtInternal);
- confstr(_CS_GNU_LIBPTHREAD_VERSION, str, n);
- // Vanilla RH-9 (glibc 2.3.2) has a bug that confstr() always tells
- // us "NPTL-0.29" even we are running with LinuxThreads. Check if this
- // is the case. LinuxThreads has a hard limit on max number of threads.
- // So sysconf(_SC_THREAD_THREADS_MAX) will return a positive value.
- // On the other hand, NPTL does not have such a limit, sysconf()
- // will return -1 and errno is not changed. Check if it is really NPTL.
- if (strcmp(os::Linux::glibc_version(), "glibc 2.3.2") == 0 &&
- strstr(str, "NPTL") &&
- sysconf(_SC_THREAD_THREADS_MAX) > 0) {
- free(str);
- os::Linux::set_libpthread_version("linuxthreads");
- } else {
- os::Linux::set_libpthread_version(str);
- }
+ char *str = (char *)malloc(n, mtInternal);
+ confstr(_CS_GNU_LIBPTHREAD_VERSION, str, n);
+ // Vanilla RH-9 (glibc 2.3.2) has a bug that confstr() always tells
+ // us "NPTL-0.29" even we are running with LinuxThreads. Check if this
+ // is the case. LinuxThreads has a hard limit on max number of threads.
+ // So sysconf(_SC_THREAD_THREADS_MAX) will return a positive value.
+ // On the other hand, NPTL does not have such a limit, sysconf()
+ // will return -1 and errno is not changed. Check if it is really NPTL.
+ if (strcmp(os::Linux::glibc_version(), "glibc 2.3.2") == 0 &&
+ strstr(str, "NPTL") &&
+ sysconf(_SC_THREAD_THREADS_MAX) > 0) {
+ free(str);
+ os::Linux::set_libpthread_version("linuxthreads");
+ } else {
+ os::Linux::set_libpthread_version(str);
+ }
} else {
// glibc before 2.3.2 only has LinuxThreads.
os::Linux::set_libpthread_version("linuxthreads");
}
if (strstr(libpthread_version(), "NPTL")) {
- os::Linux::set_is_NPTL();
+ os::Linux::set_is_NPTL();
} else {
- os::Linux::set_is_LinuxThreads();
+ os::Linux::set_is_LinuxThreads();
}
// LinuxThreads have two flavors: floating-stack mode, which allows variable
// stack size; and fixed-stack mode. NPTL is always floating-stack.
if (os::Linux::is_NPTL() || os::Linux::supports_variable_stack_size()) {
- os::Linux::set_is_floating_stack();
+ os::Linux::set_is_floating_stack();
}
}
@@ -683,9 +685,9 @@
// should always be true if the function is not inlined.
#if __GNUC__ < 3 // gcc 2.x does not support noinline attribute
-#define NOINLINE
+ #define NOINLINE
#else
-#define NOINLINE __attribute__ ((noinline))
+ #define NOINLINE __attribute__ ((noinline))
#endif
static void _expand_stack_to(address bottom) NOINLINE;
@@ -832,7 +834,8 @@
return 0;
}
-bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) {
+bool os::create_thread(Thread* thread, ThreadType thr_type,
+ size_t stack_size) {
assert(thread->osthread() == NULL, "caller responsible");
// Allocate the OSThread object
@@ -935,9 +938,9 @@
// Aborted due to thread limit being reached
if (state == ZOMBIE) {
- thread->set_osthread(NULL);
- delete osthread;
- return false;
+ thread->set_osthread(NULL);
+ delete osthread;
+ return false;
}
// The thread is returned suspended (in state INITIALIZED),
@@ -957,7 +960,7 @@
bool os::create_attached_thread(JavaThread* thread) {
#ifdef ASSERT
- thread->verify_not_published();
+ thread->verify_not_published();
#endif
// Allocate the OSThread object
@@ -1029,7 +1032,7 @@
// Restore caller's signal mask
sigset_t sigmask = osthread->caller_sigmask();
pthread_sigmask(SIG_SETMASK, &sigmask, NULL);
- }
+ }
delete osthread;
}
@@ -1084,9 +1087,11 @@
initial_thread_stack_size() != 0,
"os::init did not locate initial thread's stack region");
if ((address)&dummy >= initial_thread_stack_bottom() &&
- (address)&dummy < initial_thread_stack_bottom() + initial_thread_stack_size())
- return true;
- else return false;
+ (address)&dummy < initial_thread_stack_bottom() + initial_thread_stack_size()) {
+ return true;
+ } else {
+ return false;
+ }
}
// Find the virtual memory area that contains addr
@@ -1097,10 +1102,10 @@
while (!feof(fp)) {
if (fscanf(fp, "%p-%p", &low, &high) == 2) {
if (low <= addr && addr < high) {
- if (vma_low) *vma_low = low;
- if (vma_high) *vma_high = high;
- fclose(fp);
- return true;
+ if (vma_low) *vma_low = low;
+ if (vma_high) *vma_high = high;
+ fclose(fp);
+ return true;
}
}
for (;;) {
@@ -1136,8 +1141,9 @@
// in case other parts in glibc still assumes 2M max stack size.
// FIXME: alt signal stack is gone, maybe we can relax this constraint?
// Problem still exists RH7.2 (IA64 anyway) but 2MB is a little small
- if (stack_size > 2 * K * K IA64_ONLY(*2))
- stack_size = 2 * K * K IA64_ONLY(*2);
+ if (stack_size > 2 * K * K IA64_ONLY(*2)) {
+ stack_size = 2 * K * K IA64_ONLY(*2);
+ }
// Try to figure out where the stack base (top) is. This is harder.
//
// When an application is started, glibc saves the initial stack pointer in
@@ -1221,46 +1227,46 @@
#define _UFM UINTX_FORMAT
#define _DFM INTX_FORMAT
- /* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 */
- /* 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 */
+ // 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2
+ // 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8
i = sscanf(s, "%c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %ld " _UFM _UFM _DFM _UFM _UFM _UFM _UFM,
- &state, /* 3 %c */
- &ppid, /* 4 %d */
- &pgrp, /* 5 %d */
- &session, /* 6 %d */
- &nr, /* 7 %d */
- &tpgrp, /* 8 %d */
- &flags, /* 9 %lu */
- &minflt, /* 10 %lu */
- &cminflt, /* 11 %lu */
- &majflt, /* 12 %lu */
- &cmajflt, /* 13 %lu */
- &utime, /* 14 %lu */
- &stime, /* 15 %lu */
- &cutime, /* 16 %ld */
- &cstime, /* 17 %ld */
- &prio, /* 18 %ld */
- &nice, /* 19 %ld */
- &junk, /* 20 %ld */
- &it_real, /* 21 %ld */
- &start, /* 22 UINTX_FORMAT */
- &vsize, /* 23 UINTX_FORMAT */
- &rss, /* 24 INTX_FORMAT */
- &rsslim, /* 25 UINTX_FORMAT */
- &scodes, /* 26 UINTX_FORMAT */
- &ecode, /* 27 UINTX_FORMAT */
- &stack_start); /* 28 UINTX_FORMAT */
+ &state, // 3 %c
+ &ppid, // 4 %d
+ &pgrp, // 5 %d
+ &session, // 6 %d
+ &nr, // 7 %d
+ &tpgrp, // 8 %d
+ &flags, // 9 %lu
+ &minflt, // 10 %lu
+ &cminflt, // 11 %lu
+ &majflt, // 12 %lu
+ &cmajflt, // 13 %lu
+ &utime, // 14 %lu
+ &stime, // 15 %lu
+ &cutime, // 16 %ld
+ &cstime, // 17 %ld
+ &prio, // 18 %ld
+ &nice, // 19 %ld
+ &junk, // 20 %ld
+ &it_real, // 21 %ld
+ &start, // 22 UINTX_FORMAT
+ &vsize, // 23 UINTX_FORMAT
+ &rss, // 24 INTX_FORMAT
+ &rsslim, // 25 UINTX_FORMAT
+ &scodes, // 26 UINTX_FORMAT
+ &ecode, // 27 UINTX_FORMAT
+ &stack_start); // 28 UINTX_FORMAT
}
#undef _UFM
#undef _DFM
if (i != 28 - 2) {
- assert(false, "Bad conversion from /proc/self/stat");
- // product mode - assume we are the initial thread, good luck in the
- // embedded case.
- warning("Can't detect initial thread stack location - bad conversion");
- stack_start = (uintptr_t) &rlim;
+ assert(false, "Bad conversion from /proc/self/stat");
+ // product mode - assume we are the initial thread, good luck in the
+ // embedded case.
+ warning("Can't detect initial thread stack location - bad conversion");
+ stack_start = (uintptr_t) &rlim;
}
} else {
// For some reason we can't open /proc/self/stat (for example, running on
@@ -1298,9 +1304,9 @@
stack_top = align_size_up(stack_top, page_size());
if (max_size && stack_size > max_size) {
- _initial_thread_stack_size = max_size;
+ _initial_thread_stack_size = max_size;
} else {
- _initial_thread_stack_size = stack_size;
+ _initial_thread_stack_size = stack_size;
}
_initial_thread_stack_size = align_size_down(_initial_thread_stack_size, page_size());
@@ -1348,7 +1354,7 @@
}
#ifndef CLOCK_MONOTONIC
-#define CLOCK_MONOTONIC (1)
+ #define CLOCK_MONOTONIC (1)
#endif
void os::Linux::clock_init() {
@@ -1391,17 +1397,15 @@
}
#ifndef SYS_clock_getres
-
-#if defined(IA32) || defined(AMD64)
-#define SYS_clock_getres IA32_ONLY(266) AMD64_ONLY(229)
-#define sys_clock_getres(x,y) ::syscall(SYS_clock_getres, x, y)
+ #if defined(IA32) || defined(AMD64)
+ #define SYS_clock_getres IA32_ONLY(266) AMD64_ONLY(229)
+ #define sys_clock_getres(x,y) ::syscall(SYS_clock_getres, x, y)
+ #else
+ #warning "SYS_clock_getres not defined for this platform, disabling fast_thread_cpu_time"
+ #define sys_clock_getres(x,y) -1
+ #endif
#else
-#warning "SYS_clock_getres not defined for this platform, disabling fast_thread_cpu_time"
-#define sys_clock_getres(x,y) -1
-#endif
-
-#else
-#define sys_clock_getres(x,y) ::syscall(SYS_clock_getres, x, y)
+ #define sys_clock_getres(x,y) ::syscall(SYS_clock_getres, x, y)
#endif
void os::Linux::fast_thread_clock_init() {
@@ -1423,9 +1427,8 @@
// better than 1 sec. This is extra check for reliability.
if (pthread_getcpuclockid_func &&
- pthread_getcpuclockid_func(_main_thread, &clockid) == 0 &&
- sys_clock_getres(clockid, &tp) == 0 && tp.tv_sec == 0) {
-
+ pthread_getcpuclockid_func(_main_thread, &clockid) == 0 &&
+ sys_clock_getres(clockid, &tp) == 0 && tp.tv_sec == 0) {
_supports_fast_thread_cpu_time = true;
_pthread_getcpuclockid = pthread_getcpuclockid_func;
}
@@ -1558,7 +1561,6 @@
// from src/solaris/hpi/src/system_md.c
size_t os::lasterror(char *buf, size_t len) {
-
if (errno == 0) return 0;
const char *s = ::strerror(errno);
@@ -1769,9 +1771,9 @@
int rslt = dl_iterate_phdr(address_to_library_name_callback, (void *)&data);
if (rslt) {
- // buf already contains library name
- if (offset) *offset = addr - data.base;
- return true;
+ // buf already contains library name
+ if (offset) *offset = addr - data.base;
+ return true;
}
if (dladdr((void*)addr, &dlinfo) != 0) {
if (dlinfo.dli_fname != NULL) {
@@ -1788,9 +1790,9 @@
return false;
}
- // Loads .dll/.so and
- // in case of error it checks if .dll/.so was built for the
- // same architecture as Hotspot is running on
+// Loads .dll/.so and
+// in case of error it checks if .dll/.so was built for the
+// same architecture as Hotspot is running on
// Remember the stack's state. The Linux dynamic linker will change
@@ -1818,8 +1820,7 @@
void* loaded_library() { return _lib; }
};
-void * os::dll_load(const char *filename, char *ebuf, int ebuflen)
-{
+void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
void * result = NULL;
bool load_attempted = false;
@@ -1905,7 +1906,7 @@
bool failed_to_read_elf_head=
(sizeof(elf_head)!=
- (::read(file_descriptor, &elf_head,sizeof(elf_head))));
+ (::read(file_descriptor, &elf_head,sizeof(elf_head))));
::close(file_descriptor);
if (failed_to_read_elf_head) {
@@ -1921,9 +1922,9 @@
char* name; // String representation
} arch_t;
- #ifndef EM_486
+#ifndef EM_486
#define EM_486 6 /* Intel 80486 */
- #endif
+#endif
static const arch_t arch_array[]={
{EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"},
@@ -1948,38 +1949,38 @@
{EM_68K, EM_68K, ELFCLASS32, ELFDATA2MSB, (char*)"M68k"}
};
- #if (defined IA32)
- static Elf32_Half running_arch_code=EM_386;
- #elif (defined AMD64)
- static Elf32_Half running_arch_code=EM_X86_64;
- #elif (defined IA64)
- static Elf32_Half running_arch_code=EM_IA_64;
- #elif (defined __sparc) && (defined _LP64)
- static Elf32_Half running_arch_code=EM_SPARCV9;
- #elif (defined __sparc) && (!defined _LP64)
- static Elf32_Half running_arch_code=EM_SPARC;
- #elif (defined __powerpc64__)
- static Elf32_Half running_arch_code=EM_PPC64;
- #elif (defined __powerpc__)
- static Elf32_Half running_arch_code=EM_PPC;
- #elif (defined ARM)
- static Elf32_Half running_arch_code=EM_ARM;
- #elif (defined S390)
- static Elf32_Half running_arch_code=EM_S390;
- #elif (defined ALPHA)
- static Elf32_Half running_arch_code=EM_ALPHA;
- #elif (defined MIPSEL)
- static Elf32_Half running_arch_code=EM_MIPS_RS3_LE;
- #elif (defined PARISC)
- static Elf32_Half running_arch_code=EM_PARISC;
- #elif (defined MIPS)
- static Elf32_Half running_arch_code=EM_MIPS;
- #elif (defined M68K)
- static Elf32_Half running_arch_code=EM_68K;
- #else
+#if (defined IA32)
+ static Elf32_Half running_arch_code=EM_386;
+#elif (defined AMD64)
+ static Elf32_Half running_arch_code=EM_X86_64;
+#elif (defined IA64)
+ static Elf32_Half running_arch_code=EM_IA_64;
+#elif (defined __sparc) && (defined _LP64)
+ static Elf32_Half running_arch_code=EM_SPARCV9;
+#elif (defined __sparc) && (!defined _LP64)
+ static Elf32_Half running_arch_code=EM_SPARC;
+#elif (defined __powerpc64__)
+ static Elf32_Half running_arch_code=EM_PPC64;
+#elif (defined __powerpc__)
+ static Elf32_Half running_arch_code=EM_PPC;
+#elif (defined ARM)
+ static Elf32_Half running_arch_code=EM_ARM;
+#elif (defined S390)
+ static Elf32_Half running_arch_code=EM_S390;
+#elif (defined ALPHA)
+ static Elf32_Half running_arch_code=EM_ALPHA;
+#elif (defined MIPSEL)
+ static Elf32_Half running_arch_code=EM_MIPS_RS3_LE;
+#elif (defined PARISC)
+ static Elf32_Half running_arch_code=EM_PARISC;
+#elif (defined MIPS)
+ static Elf32_Half running_arch_code=EM_MIPS;
+#elif (defined M68K)
+ static Elf32_Half running_arch_code=EM_68K;
+#else
#error Method os::dll_load requires that one of following is defined:\
IA32, AMD64, IA64, __sparc, __powerpc__, ARM, S390, ALPHA, MIPS, MIPSEL, PARISC, M68K
- #endif
+#endif
// Identify compatability class for VM's architecture and library's architecture
// Obtain string descriptions for architectures
@@ -1998,7 +1999,7 @@
}
assert(running_arch_index != -1,
- "Didn't find running architecture code (running_arch_code) in arch_array");
+ "Didn't find running architecture code (running_arch_code) in arch_array");
if (running_arch_index == -1) {
// Even though running architecture detection failed
// we may still continue with reporting dlerror() message
@@ -2020,20 +2021,21 @@
if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) {
if (lib_arch.name!=NULL) {
::snprintf(diag_msg_buf, diag_msg_max_length-1,
- " (Possible cause: can't load %s-bit .so on a %s-bit platform)",
- lib_arch.name, arch_array[running_arch_index].name);
+ " (Possible cause: can't load %s-bit .so on a %s-bit platform)",
+ lib_arch.name, arch_array[running_arch_index].name);
} else {
::snprintf(diag_msg_buf, diag_msg_max_length-1,
- " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)",
- lib_arch.code,
- arch_array[running_arch_index].name);
+ " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)",
+ lib_arch.code,
+ arch_array[running_arch_index].name);
}
}
return NULL;
}
-void * os::Linux::dlopen_helper(const char *filename, char *ebuf, int ebuflen) {
+void * os::Linux::dlopen_helper(const char *filename, char *ebuf,
+ int ebuflen) {
void * result = ::dlopen(filename, RTLD_LAZY);
if (result == NULL) {
::strncpy(ebuf, ::dlerror(), ebuflen - 1);
@@ -2042,7 +2044,8 @@
return result;
}
-void * os::Linux::dll_load_in_vmthread(const char *filename, char *ebuf, int ebuflen) {
+void * os::Linux::dll_load_in_vmthread(const char *filename, char *ebuf,
+ int ebuflen) {
void * result = NULL;
if (LoadExecStackDllInVMThread) {
result = dlopen_helper(filename, ebuf, ebuflen);
@@ -2074,11 +2077,10 @@
return result;
}
-/*
- * glibc-2.0 libdl is not MT safe. If you are building with any glibc,
- * chances are you might want to run the generated bits against glibc-2.0
- * libdl.so, so always use locking for any version of glibc.
- */
+// glibc-2.0 libdl is not MT safe. If you are building with any glibc,
+// chances are you might want to run the generated bits against glibc-2.0
+// libdl.so, so always use locking for any version of glibc.
+//
void* os::dll_lookup(void* handle, const char* name) {
pthread_mutex_lock(&dl_mutex);
void* res = dlsym(handle, name);
@@ -2093,7 +2095,7 @@
static bool _print_ascii_file(const char* filename, outputStream* st) {
int fd = ::open(filename, O_RDONLY);
if (fd == -1) {
- return false;
+ return false;
}
char buf[32];
@@ -2108,16 +2110,16 @@
}
void os::print_dll_info(outputStream *st) {
- st->print_cr("Dynamic libraries:");
-
- char fname[32];
- pid_t pid = os::Linux::gettid();
-
- jio_snprintf(fname, sizeof(fname), "/proc/%d/maps", pid);
-
- if (!_print_ascii_file(fname, st)) {
- st->print("Can not get library information for pid = %d\n", pid);
- }
+ st->print_cr("Dynamic libraries:");
+
+ char fname[32];
+ pid_t pid = os::Linux::gettid();
+
+ jio_snprintf(fname, sizeof(fname), "/proc/%d/maps", pid);
+
+ if (!_print_ascii_file(fname, st)) {
+ st->print("Can not get library information for pid = %d\n", pid);
+ }
}
int os::get_loaded_modules_info(os::LoadedModulesCallbackFunc callback, void *param) {
@@ -2207,28 +2209,28 @@
// an informative string like "6.0.6" or "wheezy/sid". Because of this
// "Debian " is printed before the contents of the debian_version file.
void os::Linux::print_distro_info(outputStream* st) {
- if (!_print_ascii_file("/etc/oracle-release", st) &&
- !_print_ascii_file("/etc/mandriva-release", st) &&
- !_print_ascii_file("/etc/mandrake-release", st) &&
- !_print_ascii_file("/etc/sun-release", st) &&
- !_print_ascii_file("/etc/redhat-release", st) &&
- !_print_ascii_file("/etc/lsb-release", st) &&
- !_print_ascii_file("/etc/SuSE-release", st) &&
- !_print_ascii_file("/etc/turbolinux-release", st) &&
- !_print_ascii_file("/etc/gentoo-release", st) &&
- !_print_ascii_file("/etc/ltib-release", st) &&
- !_print_ascii_file("/etc/angstrom-version", st) &&
- !_print_ascii_file("/etc/system-release", st) &&
- !_print_ascii_file("/etc/os-release", st)) {
-
- if (file_exists("/etc/debian_version")) {
- st->print("Debian ");
- _print_ascii_file("/etc/debian_version", st);
- } else {
- st->print("Linux");
- }
- }
- st->cr();
+ if (!_print_ascii_file("/etc/oracle-release", st) &&
+ !_print_ascii_file("/etc/mandriva-release", st) &&
+ !_print_ascii_file("/etc/mandrake-release", st) &&
+ !_print_ascii_file("/etc/sun-release", st) &&
+ !_print_ascii_file("/etc/redhat-release", st) &&
+ !_print_ascii_file("/etc/lsb-release", st) &&
+ !_print_ascii_file("/etc/SuSE-release", st) &&
+ !_print_ascii_file("/etc/turbolinux-release", st) &&
+ !_print_ascii_file("/etc/gentoo-release", st) &&
+ !_print_ascii_file("/etc/ltib-release", st) &&
+ !_print_ascii_file("/etc/angstrom-version", st) &&
+ !_print_ascii_file("/etc/system-release", st) &&
+ !_print_ascii_file("/etc/os-release", st)) {
+
+ if (file_exists("/etc/debian_version")) {
+ st->print("Debian ");
+ _print_ascii_file("/etc/debian_version", st);
+ } else {
+ st->print("Linux");
+ }
+ }
+ st->cr();
}
void os::Linux::print_libversion_info(outputStream* st) {
@@ -2237,15 +2239,15 @@
st->print("%s ", os::Linux::glibc_version());
st->print("%s ", os::Linux::libpthread_version());
if (os::Linux::is_LinuxThreads()) {
- st->print("(%s stack)", os::Linux::is_floating_stack() ? "floating" : "fixed");
+ st->print("(%s stack)", os::Linux::is_floating_stack() ? "floating" : "fixed");
}
st->cr();
}
void os::Linux::print_full_memory_info(outputStream* st) {
- st->print("\n/proc/meminfo:\n");
- _print_ascii_file("/proc/meminfo", st);
- st->cr();
+ st->print("\n/proc/meminfo:\n");
+ _print_ascii_file("/proc/meminfo", st);
+ st->cr();
}
void os::print_memory_info(outputStream* st) {
@@ -2335,15 +2337,16 @@
char dli_fname[MAXPATHLEN];
bool ret = dll_address_to_library_name(
- CAST_FROM_FN_PTR(address, os::jvm_path),
- dli_fname, sizeof(dli_fname), NULL);
+ CAST_FROM_FN_PTR(address, os::jvm_path),
+ dli_fname, sizeof(dli_fname), NULL);
assert(ret, "cannot locate libjvm");
char *rp = NULL;
if (ret && dli_fname[0] != '\0') {
rp = realpath(dli_fname, buf);
}
- if (rp == NULL)
+ if (rp == NULL) {
return;
+ }
if (Arguments::sun_java_launcher_is_altjvm()) {
// Support for the java launcher's '-XXaltjvm=<path>' option. Typical
@@ -2371,8 +2374,9 @@
assert(strstr(p, "/libjvm") == p, "invalid library name");
rp = realpath(java_home_var, buf);
- if (rp == NULL)
+ if (rp == NULL) {
return;
+ }
// determine if this is a legacy image or modules image
// modules image doesn't have "jre" subdirectory
@@ -2391,8 +2395,9 @@
} else {
// Go back to path of .so
rp = realpath(dli_fname, buf);
- if (rp == NULL)
+ if (rp == NULL) {
return;
+ }
}
}
}
@@ -2414,18 +2419,18 @@
static volatile jint sigint_count = 0;
-static void
-UserHandler(int sig, void *siginfo, void *context) {
+static void UserHandler(int sig, void *siginfo, void *context) {
// 4511530 - sem_post is serialized and handled by the manager thread. When
// the program is interrupted by Ctrl-C, SIGINT is sent to every thread. We
// don't want to flood the manager thread with sem_post requests.
- if (sig == SIGINT && Atomic::add(1, &sigint_count) > 1)
- return;
+ if (sig == SIGINT && Atomic::add(1, &sigint_count) > 1) {
+ return;
+ }
// Ctrl-C is pressed during error reporting, likely because the error
// handler fails to abort. Let VM die immediately.
if (sig == SIGINT && is_error_reported()) {
- os::die();
+ os::die();
}
os::signal_notify(sig);
@@ -2436,15 +2441,15 @@
}
class Semaphore : public StackObj {
- public:
- Semaphore();
- ~Semaphore();
- void signal();
- void wait();
- bool trywait();
- bool timedwait(unsigned int sec, int nsec);
- private:
- sem_t _semaphore;
+ public:
+ Semaphore();
+ ~Semaphore();
+ void signal();
+ void wait();
+ bool trywait();
+ bool timedwait(unsigned int sec, int nsec);
+ private:
+ sem_t _semaphore;
};
Semaphore::Semaphore() {
@@ -2523,10 +2528,8 @@
::raise(signal_number);
}
-/*
- * The following code is moved from os.cpp for making this
- * code platform specific, which it is by its very nature.
- */
+// The following code is moved from os.cpp for making this
+// code platform specific, which it is by its very nature.
// Will be modified when max signal is changed to be dynamic
int os::sigexitnum_pd() {
@@ -2577,12 +2580,10 @@
// were we externally suspended while we were waiting?
threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
if (threadIsSuspended) {
- //
// The semaphore has been incremented, but while we were waiting
// another thread suspended us. We don't want to continue running
// while suspended because that would surprise the thread that
// suspended us.
- //
::sem_post(&sig_sem);
thread->java_suspend_self();
@@ -2695,7 +2696,7 @@
int os::Linux::commit_memory_impl(char* addr, size_t size, bool exec) {
int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE;
uintptr_t res = (uintptr_t) ::mmap(addr, size, prot,
- MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0);
+ MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0);
if (res != (uintptr_t) MAP_FAILED) {
if (UseNUMAInterleaving) {
numa_make_global(addr, size);
@@ -2730,12 +2731,12 @@
// Define MAP_HUGETLB here so we can build HotSpot on old systems.
#ifndef MAP_HUGETLB
-#define MAP_HUGETLB 0x40000
+ #define MAP_HUGETLB 0x40000
#endif
// Define MADV_HUGEPAGE here so we can build HotSpot on old systems.
#ifndef MADV_HUGEPAGE
-#define MADV_HUGEPAGE 14
+ #define MADV_HUGEPAGE 14
#endif
int os::Linux::commit_memory_impl(char* addr, size_t size,
@@ -2803,7 +2804,7 @@
Linux::numa_tonode_memory(addr, bytes, lgrp_hint);
}
-bool os::numa_topology_changed() { return false; }
+bool os::numa_topology_changed() { return false; }
size_t os::numa_get_groups_num() {
int max_node = Linux::numa_max_node();
@@ -2832,7 +2833,8 @@
return false;
}
-char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) {
+char *os::scan_pages(char *start, char* end, page_info* page_expected,
+ page_info* page_found) {
return end;
}
@@ -2842,17 +2844,17 @@
int retval = -1;
#if defined(IA32)
-# ifndef SYS_getcpu
-# define SYS_getcpu 318
-# endif
+ #ifndef SYS_getcpu
+ #define SYS_getcpu 318
+ #endif
retval = syscall(SYS_getcpu, &cpu, NULL, NULL);
#elif defined(AMD64)
// Unfortunately we have to bring all these macros here from vsyscall.h
// to be able to compile on old linuxes.
-# define __NR_vgetcpu 2
-# define VSYSCALL_START (-10UL << 20)
-# define VSYSCALL_SIZE 1024
-# define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))
+ #define __NR_vgetcpu 2
+ #define VSYSCALL_START (-10UL << 20)
+ #define VSYSCALL_SIZE 1024
+ #define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))
typedef long (*vgetcpu_t)(unsigned int *cpu, unsigned int *node, unsigned long *tcache);
vgetcpu_t vgetcpu = (vgetcpu_t)VSYSCALL_ADDR(__NR_vgetcpu);
retval = vgetcpu(&cpu, NULL, NULL);
@@ -2885,8 +2887,10 @@
dlsym(RTLD_DEFAULT, "sched_getcpu")));
// If it's not, try a direct syscall.
- if (sched_getcpu() == -1)
- set_sched_getcpu(CAST_TO_FN_PTR(sched_getcpu_func_t, (void*)&sched_getcpu_syscall));
+ if (sched_getcpu() == -1) {
+ set_sched_getcpu(CAST_TO_FN_PTR(sched_getcpu_func_t,
+ (void*)&sched_getcpu_syscall));
+ }
if (sched_getcpu() != -1) { // Does it work?
void *handle = dlopen("libnuma.so.1", RTLD_LAZY);
@@ -2900,9 +2904,9 @@
set_numa_tonode_memory(CAST_TO_FN_PTR(numa_tonode_memory_func_t,
libnuma_dlsym(handle, "numa_tonode_memory")));
set_numa_interleave_memory(CAST_TO_FN_PTR(numa_interleave_memory_func_t,
- libnuma_dlsym(handle, "numa_interleave_memory")));
+ libnuma_dlsym(handle, "numa_interleave_memory")));
set_numa_set_bind_policy(CAST_TO_FN_PTR(numa_set_bind_policy_func_t,
- libnuma_dlsym(handle, "numa_set_bind_policy")));
+ libnuma_dlsym(handle, "numa_set_bind_policy")));
if (numa_available() != -1) {
@@ -2974,12 +2978,11 @@
bool os::pd_uncommit_memory(char* addr, size_t size) {
uintptr_t res = (uintptr_t) ::mmap(addr, size, PROT_NONE,
- MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE|MAP_ANONYMOUS, -1, 0);
+ MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE|MAP_ANONYMOUS, -1, 0);
return res != (uintptr_t) MAP_FAILED;
}
-static
-address get_stack_commited_bottom(address bottom, size_t size) {
+static address get_stack_commited_bottom(address bottom, size_t size) {
address nbot = bottom;
address ntop = bottom + size;
@@ -3053,7 +3056,6 @@
// mapping. This only affects the main/initial thread
bool os::pd_create_stack_guard_pages(char* addr, size_t size) {
-
if (os::Linux::is_initial_thread()) {
// As we manually grow stack up to bottom inside create_attached_thread(),
// it's likely that os::Linux::initial_thread_stack_bottom is mapped and
@@ -3065,8 +3067,8 @@
if (mincore((address)stack_extent, os::vm_page_size(), vec) == -1) {
// Fallback to slow path on all errors, including EAGAIN
stack_extent = (uintptr_t) get_stack_commited_bottom(
- os::Linux::initial_thread_stack_bottom(),
- (size_t)addr - stack_extent);
+ os::Linux::initial_thread_stack_bottom(),
+ (size_t)addr - stack_extent);
}
if (stack_extent < (uintptr_t)addr) {
@@ -3139,7 +3141,7 @@
}
char* os::pd_reserve_memory(size_t bytes, char* requested_addr,
- size_t alignment_hint) {
+ size_t alignment_hint) {
return anon_mmap(requested_addr, bytes, (requested_addr != NULL));
}
@@ -3190,7 +3192,8 @@
return linux_mprotect(addr, size, PROT_READ|PROT_WRITE);
}
-bool os::Linux::transparent_huge_pages_sanity_check(bool warn, size_t page_size) {
+bool os::Linux::transparent_huge_pages_sanity_check(bool warn,
+ size_t page_size) {
bool result = false;
void *p = mmap(NULL, page_size * 2, PROT_READ|PROT_WRITE,
MAP_ANONYMOUS|MAP_PRIVATE,
@@ -3245,20 +3248,19 @@
return result;
}
-/*
-* Set the coredump_filter bits to include largepages in core dump (bit 6)
-*
-* From the coredump_filter documentation:
-*
-* - (bit 0) anonymous private memory
-* - (bit 1) anonymous shared memory
-* - (bit 2) file-backed private memory
-* - (bit 3) file-backed shared memory
-* - (bit 4) ELF header pages in file-backed private memory areas (it is
-* effective only if the bit 2 is cleared)
-* - (bit 5) hugetlb private memory
-* - (bit 6) hugetlb shared memory
-*/
+// Set the coredump_filter bits to include largepages in core dump (bit 6)
+//
+// From the coredump_filter documentation:
+//
+// - (bit 0) anonymous private memory
+// - (bit 1) anonymous shared memory
+// - (bit 2) file-backed private memory
+// - (bit 3) file-backed shared memory
+// - (bit 4) ELF header pages in file-backed private memory areas (it is
+// effective only if the bit 2 is cleared)
+// - (bit 5) hugetlb private memory
+// - (bit 6) hugetlb shared memory
+//
static void set_coredump_filter(void) {
FILE *f;
long cdm;
@@ -3330,8 +3332,8 @@
if (!FLAG_IS_DEFAULT(LargePageSizeInBytes) && LargePageSizeInBytes != large_page_size) {
warning("Setting LargePageSizeInBytes has no effect on this OS. Large page size is "
- SIZE_FORMAT "%s.", byte_size_in_proper_unit(large_page_size),
- proper_unit_for_byte_size(large_page_size));
+ SIZE_FORMAT "%s.", byte_size_in_proper_unit(large_page_size),
+ proper_unit_for_byte_size(large_page_size));
}
return large_page_size;
@@ -3411,10 +3413,11 @@
}
#ifndef SHM_HUGETLB
-#define SHM_HUGETLB 04000
+ #define SHM_HUGETLB 04000
#endif
-char* os::Linux::reserve_memory_special_shm(size_t bytes, size_t alignment, char* req_addr, bool exec) {
+char* os::Linux::reserve_memory_special_shm(size_t bytes, size_t alignment,
+ char* req_addr, bool exec) {
// "exec" is passed in but not used. Creating the shared image for
// the code cache doesn't have an SHM_X executable permission to check.
assert(UseLargePages && UseSHM, "only for SHM large pages");
@@ -3430,33 +3433,32 @@
bool warn_on_failure = UseLargePages &&
(!FLAG_IS_DEFAULT(UseLargePages) ||
!FLAG_IS_DEFAULT(UseSHM) ||
- !FLAG_IS_DEFAULT(LargePageSizeInBytes)
- );
+ !FLAG_IS_DEFAULT(LargePageSizeInBytes));
char msg[128];
// Create a large shared memory region to attach to based on size.
// Currently, size is the total size of the heap
int shmid = shmget(key, bytes, SHM_HUGETLB|IPC_CREAT|SHM_R|SHM_W);
if (shmid == -1) {
- // Possible reasons for shmget failure:
- // 1. shmmax is too small for Java heap.
- // > check shmmax value: cat /proc/sys/kernel/shmmax
- // > increase shmmax value: echo "0xffffffff" > /proc/sys/kernel/shmmax
- // 2. not enough large page memory.
- // > check available large pages: cat /proc/meminfo
- // > increase amount of large pages:
- // echo new_value > /proc/sys/vm/nr_hugepages
- // Note 1: different Linux may use different name for this property,
- // e.g. on Redhat AS-3 it is "hugetlb_pool".
- // Note 2: it's possible there's enough physical memory available but
- // they are so fragmented after a long run that they can't
- // coalesce into large pages. Try to reserve large pages when
- // the system is still "fresh".
- if (warn_on_failure) {
- jio_snprintf(msg, sizeof(msg), "Failed to reserve shared memory (errno = %d).", errno);
- warning("%s", msg);
- }
- return NULL;
+ // Possible reasons for shmget failure:
+ // 1. shmmax is too small for Java heap.
+ // > check shmmax value: cat /proc/sys/kernel/shmmax
+ // > increase shmmax value: echo "0xffffffff" > /proc/sys/kernel/shmmax
+ // 2. not enough large page memory.
+ // > check available large pages: cat /proc/meminfo
+ // > increase amount of large pages:
+ // echo new_value > /proc/sys/vm/nr_hugepages
+ // Note 1: different Linux may use different name for this property,
+ // e.g. on Redhat AS-3 it is "hugetlb_pool".
+ // Note 2: it's possible there's enough physical memory available but
+ // they are so fragmented after a long run that they can't
+ // coalesce into large pages. Try to reserve large pages when
+ // the system is still "fresh".
+ if (warn_on_failure) {
+ jio_snprintf(msg, sizeof(msg), "Failed to reserve shared memory (errno = %d).", errno);
+ warning("%s", msg);
+ }
+ return NULL;
}
// attach to the region
@@ -3470,17 +3472,18 @@
shmctl(shmid, IPC_RMID, NULL);
if ((intptr_t)addr == -1) {
- if (warn_on_failure) {
- jio_snprintf(msg, sizeof(msg), "Failed to attach shared memory (errno = %d).", err);
- warning("%s", msg);
- }
- return NULL;
+ if (warn_on_failure) {
+ jio_snprintf(msg, sizeof(msg), "Failed to attach shared memory (errno = %d).", err);
+ warning("%s", msg);
+ }
+ return NULL;
}
return addr;
}
-static void warn_on_large_pages_failure(char* req_addr, size_t bytes, int error) {
+static void warn_on_large_pages_failure(char* req_addr, size_t bytes,
+ int error) {
assert(error == ENOMEM, "Only expect to fail if no memory is available");
bool warn_on_failure = UseLargePages &&
@@ -3491,12 +3494,14 @@
if (warn_on_failure) {
char msg[128];
jio_snprintf(msg, sizeof(msg), "Failed to reserve large pages memory req_addr: "
- PTR_FORMAT " bytes: " SIZE_FORMAT " (errno = %d).", req_addr, bytes, error);
+ PTR_FORMAT " bytes: " SIZE_FORMAT " (errno = %d).", req_addr, bytes, error);
warning("%s", msg);
}
}
-char* os::Linux::reserve_memory_special_huge_tlbfs_only(size_t bytes, char* req_addr, bool exec) {
+char* os::Linux::reserve_memory_special_huge_tlbfs_only(size_t bytes,
+ char* req_addr,
+ bool exec) {
assert(UseLargePages && UseHugeTLBFS, "only for Huge TLBFS large pages");
assert(is_size_aligned(bytes, os::large_page_size()), "Unaligned size");
assert(is_ptr_aligned(req_addr, os::large_page_size()), "Unaligned address");
@@ -3516,7 +3521,10 @@
return addr;
}
-char* os::Linux::reserve_memory_special_huge_tlbfs_mixed(size_t bytes, size_t alignment, char* req_addr, bool exec) {
+char* os::Linux::reserve_memory_special_huge_tlbfs_mixed(size_t bytes,
+ size_t alignment,
+ char* req_addr,
+ bool exec) {
size_t large_page_size = os::large_page_size();
assert(bytes >= large_page_size, "Shouldn't allocate large pages for small sizes");
@@ -3596,9 +3604,9 @@
}
if (lp_end != end) {
- result = ::mmap(lp_end, end - lp_end, prot,
- MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED,
- -1, 0);
+ result = ::mmap(lp_end, end - lp_end, prot,
+ MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED,
+ -1, 0);
if (result == MAP_FAILED) {
::munmap(start, lp_end - start);
return NULL;
@@ -3608,7 +3616,10 @@
return start;
}
-char* os::Linux::reserve_memory_special_huge_tlbfs(size_t bytes, size_t alignment, char* req_addr, bool exec) {
+char* os::Linux::reserve_memory_special_huge_tlbfs(size_t bytes,
+ size_t alignment,
+ char* req_addr,
+ bool exec) {
assert(UseLargePages && UseHugeTLBFS, "only for Huge TLBFS large pages");
assert(is_ptr_aligned(req_addr, alignment), "Must be");
assert(is_power_of_2(alignment), "Must be");
@@ -3622,7 +3633,8 @@
}
}
-char* os::reserve_memory_special(size_t bytes, size_t alignment, char* req_addr, bool exec) {
+char* os::reserve_memory_special(size_t bytes, size_t alignment,
+ char* req_addr, bool exec) {
assert(UseLargePages, "only for large pages");
char* addr;
@@ -3732,12 +3744,12 @@
// if kernel honors the hint then we can return immediately.
char * addr = anon_mmap(requested_addr, bytes, false);
if (addr == requested_addr) {
- return requested_addr;
+ return requested_addr;
}
if (addr != NULL) {
- // mmap() is successful but it fails to reserve at the requested address
- anon_munmap(addr, bytes);
+ // mmap() is successful but it fails to reserve at the requested address
+ anon_munmap(addr, bytes);
}
int i;
@@ -3792,7 +3804,6 @@
return ::read(fd, buf, nBytes);
}
-//
// Short sleep, direct OS call.
//
// Note: certain versions of Linux CFS scheduler (since 2.6.23) do not guarantee
@@ -3811,8 +3822,7 @@
req.tv_sec = 0;
if (ms > 0) {
req.tv_nsec = (ms % 1000) * 1000000;
- }
- else {
+ } else {
req.tv_nsec = 1;
}
@@ -3899,7 +3909,8 @@
return (ret == 0) ? OS_OK : OS_ERR;
}
-OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) {
+OSReturn os::get_native_priority(const Thread* const thread,
+ int *priority_ptr) {
if (!UseThreadPriorities || ThreadPriorityPolicy == 0) {
*priority_ptr = java_to_os_priority[NormPriority];
return OS_OK;
@@ -3936,19 +3947,18 @@
// - sends signal to end the sigsuspend loop in the SR_handler
//
// Note that the SR_lock plays no role in this suspend/resume protocol.
-//
static void resume_clear_context(OSThread *osthread) {
osthread->set_ucontext(NULL);
osthread->set_siginfo(NULL);
}
-static void suspend_save_context(OSThread *osthread, siginfo_t* siginfo, ucontext_t* context) {
+static void suspend_save_context(OSThread *osthread, siginfo_t* siginfo,
+ ucontext_t* context) {
osthread->set_ucontext(context);
osthread->set_siginfo(siginfo);
}
-//
// Handler function invoked when a thread's execution is suspended or
// resumed. We have to be careful that only async-safe functions are
// called here (Note: most pthread functions are not async safe and
@@ -4018,21 +4028,21 @@
static int SR_initialize() {
struct sigaction act;
char *s;
- /* Get signal number to use for suspend/resume */
+ // Get signal number to use for suspend/resume
if ((s = ::getenv("_JAVA_SR_SIGNUM")) != 0) {
int sig = ::strtol(s, 0, 10);
if (sig > 0 || sig < _NSIG) {
- SR_signum = sig;
+ SR_signum = sig;
}
}
assert(SR_signum > SIGSEGV && SR_signum > SIGBUS,
- "SR_signum must be greater than max(SIGSEGV, SIGBUS), see 4355769");
+ "SR_signum must be greater than max(SIGSEGV, SIGBUS), see 4355769");
sigemptyset(&SR_sigset);
sigaddset(&SR_sigset, SR_signum);
- /* Set up signal handler for suspend/resume */
+ // Set up signal handler for suspend/resume
act.sa_flags = SA_RESTART|SA_SIGINFO;
act.sa_handler = (void (*)(int)) SR_handler;
@@ -4158,9 +4168,10 @@
// Note that the VM will print warnings if it detects conflicting signal
// handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers".
//
-extern "C" JNIEXPORT int
-JVM_handle_linux_signal(int signo, siginfo_t* siginfo,
- void* ucontext, int abort_if_unrecognized);
+extern "C" JNIEXPORT int JVM_handle_linux_signal(int signo,
+ siginfo_t* siginfo,
+ void* ucontext,
+ int abort_if_unrecognized);
void signalHandler(int sig, siginfo_t* info, void* uc) {
assert(info != NULL && uc != NULL, "it must be old kernel");
@@ -4338,12 +4349,12 @@
signal_setting_t begin_signal_setting = NULL;
signal_setting_t end_signal_setting = NULL;
begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t,
- dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting"));
+ dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting"));
if (begin_signal_setting != NULL) {
end_signal_setting = CAST_TO_FN_PTR(signal_setting_t,
- dlsym(RTLD_DEFAULT, "JVM_end_signal_setting"));
+ dlsym(RTLD_DEFAULT, "JVM_end_signal_setting"));
get_signal_action = CAST_TO_FN_PTR(get_signal_t,
- dlsym(RTLD_DEFAULT, "JVM_get_signal_action"));
+ dlsym(RTLD_DEFAULT, "JVM_get_signal_action"));
libjsig_is_loaded = true;
assert(UseSignalChaining, "should enable signal-chaining");
}
@@ -4409,7 +4420,7 @@
// We will never set this flag, and we should
// ignore this flag in our diagnostic
#ifdef SIGNIFICANT_SIGNAL_MASK
-#undef SIGNIFICANT_SIGNAL_MASK
+ #undef SIGNIFICANT_SIGNAL_MASK
#endif
#define SIGNIFICANT_SIGNAL_MASK (~0x04000000)
@@ -4468,7 +4479,7 @@
// Check: is it our handler?
if (handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler) ||
- handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler)) {
+ handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler)) {
// It is our signal handler
// check for flags, reset system-used one!
if ((int)sa.sa_flags != os::Linux::get_our_sigflags(sig)) {
@@ -4481,15 +4492,17 @@
}
-#define DO_SIGNAL_CHECK(sig) \
- if (!sigismember(&check_signal_done, sig)) \
- os::Linux::check_signal_handler(sig)
+#define DO_SIGNAL_CHECK(sig) \
+ do { \
+ if (!sigismember(&check_signal_done, sig)) { \
+ os::Linux::check_signal_handler(sig); \
+ } \
+ } while (0)
// This method is a periodic task to check for misbehaving JNI applications
// under CheckJNI, we can add any periodic checks here
void os::run_periodic_checks() {
-
if (check_signals == false) return;
// SEGV and BUS if overridden could potentially prevent
@@ -4600,7 +4613,8 @@
}
}
-extern void report_error(char* file_name, int line_no, char* title, char* format, ...);
+extern void report_error(char* file_name, int line_no, char* title,
+ char* format, ...);
extern bool signal_name(int signo, char* buf, size_t len);
@@ -4618,7 +4632,7 @@
// this is called _before_ the most of global arguments have been parsed
void os::init(void) {
- char dummy; /* used to get a guess on initial stack address */
+ char dummy; // used to get a guess on initial stack address
// first_hrtime = gethrtime();
// With LinuxThreads the JavaMain thread pid (primordial thread)
@@ -4691,8 +4705,7 @@
}
// this is called _after_ the global arguments have been parsed
-jint os::init_2(void)
-{
+jint os::init_2(void) {
Linux::fast_thread_clock_init();
// Allocate a single page and mark it as readable for safepoint polling
@@ -4702,8 +4715,10 @@
os::set_polling_page(polling_page);
#ifndef PRODUCT
- if (Verbose && PrintMiscellaneous)
- tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page);
+ if (Verbose && PrintMiscellaneous) {
+ tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n",
+ (intptr_t)polling_page);
+ }
#endif
if (!UseMembar) {
@@ -4712,8 +4727,10 @@
os::set_memory_serialize_page(mem_serialize_page);
#ifndef PRODUCT
- if (Verbose && PrintMiscellaneous)
- tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page);
+ if (Verbose && PrintMiscellaneous) {
+ tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n",
+ (intptr_t)mem_serialize_page);
+ }
#endif
}
@@ -4732,22 +4749,22 @@
// Add in 2*BytesPerWord times page size to account for VM stack during
// class initialization depending on 32 or 64 bit VM.
os::Linux::min_stack_allowed = MAX2(os::Linux::min_stack_allowed,
- (size_t)(StackYellowPages+StackRedPages+StackShadowPages) * Linux::page_size() +
- (2*BytesPerWord COMPILER2_PRESENT(+1)) * Linux::vm_default_page_size());
+ (size_t)(StackYellowPages+StackRedPages+StackShadowPages) * Linux::page_size() +
+ (2*BytesPerWord COMPILER2_PRESENT(+1)) * Linux::vm_default_page_size());
size_t threadStackSizeInBytes = ThreadStackSize * K;
if (threadStackSizeInBytes != 0 &&
threadStackSizeInBytes < os::Linux::min_stack_allowed) {
- tty->print_cr("\nThe stack size specified is too small, "
- "Specify at least %dk",
- os::Linux::min_stack_allowed/ K);
- return JNI_ERR;
+ tty->print_cr("\nThe stack size specified is too small, "
+ "Specify at least %dk",
+ os::Linux::min_stack_allowed/ K);
+ return JNI_ERR;
}
// Make the stack size a multiple of the page size so that
// the yellow/red zones can be guarded.
JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes,
- vm_page_size()));
+ vm_page_size()));
Linux::capture_initial_stack(JavaThread::stack_size_at_create());
@@ -4757,9 +4774,9 @@
Linux::libpthread_init();
if (PrintMiscellaneous && (Verbose || WizardMode)) {
- tty->print_cr("[HotSpot is running with %s, %s(%s)]\n",
- Linux::glibc_version(), Linux::libpthread_version(),
- Linux::is_floating_stack() ? "floating stack" : "fixed stack");
+ tty->print_cr("[HotSpot is running with %s, %s(%s)]\n",
+ Linux::glibc_version(), Linux::libpthread_version(),
+ Linux::is_floating_stack() ? "floating stack" : "fixed stack");
}
if (UseNUMA) {
@@ -4801,14 +4818,16 @@
struct rlimit nbr_files;
int status = getrlimit(RLIMIT_NOFILE, &nbr_files);
if (status != 0) {
- if (PrintMiscellaneous && (Verbose || WizardMode))
+ if (PrintMiscellaneous && (Verbose || WizardMode)) {
perror("os::init_2 getrlimit failed");
+ }
} else {
nbr_files.rlim_cur = nbr_files.rlim_max;
status = setrlimit(RLIMIT_NOFILE, &nbr_files);
if (status != 0) {
- if (PrintMiscellaneous && (Verbose || WizardMode))
+ if (PrintMiscellaneous && (Verbose || WizardMode)) {
perror("os::init_2 setrlimit failed");
+ }
}
}
}
@@ -4854,16 +4873,17 @@
// Mark the polling page as unreadable
void os::make_polling_page_unreadable(void) {
- if (!guard_memory((char*)_polling_page, Linux::page_size()))
+ if (!guard_memory((char*)_polling_page, Linux::page_size())) {
fatal("Could not disable polling page");
-};
+ }
+}
// Mark the polling page as readable
void os::make_polling_page_readable(void) {
if (!linux_mprotect((char *)_polling_page, Linux::page_size(), PROT_READ)) {
fatal("Could not enable polling page");
}
-};
+}
int os::active_processor_count() {
// Linux doesn't yet have a (official) notion of processor sets,
@@ -4899,12 +4919,12 @@
}
class PcFetcher : public os::SuspendedThreadTask {
-public:
+ public:
PcFetcher(Thread* thread) : os::SuspendedThreadTask(thread) {}
ExtendedPC result();
-protected:
+ protected:
void do_task(const os::SuspendedThreadTaskContext& context);
-private:
+ private:
ExtendedPC _epc;
};
@@ -4936,19 +4956,20 @@
return fetcher.result();
}
-int os::Linux::safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime)
-{
- if (is_NPTL()) {
- return pthread_cond_timedwait(_cond, _mutex, _abstime);
- } else {
- // 6292965: LinuxThreads pthread_cond_timedwait() resets FPU control
- // word back to default 64bit precision if condvar is signaled. Java
- // wants 53bit precision. Save and restore current value.
- int fpu = get_fpu_control_word();
- int status = pthread_cond_timedwait(_cond, _mutex, _abstime);
- set_fpu_control_word(fpu);
- return status;
- }
+int os::Linux::safe_cond_timedwait(pthread_cond_t *_cond,
+ pthread_mutex_t *_mutex,
+ const struct timespec *_abstime) {
+ if (is_NPTL()) {
+ return pthread_cond_timedwait(_cond, _mutex, _abstime);
+ } else {
+ // 6292965: LinuxThreads pthread_cond_timedwait() resets FPU control
+ // word back to default 64bit precision if condvar is signaled. Java
+ // wants 53bit precision. Save and restore current value.
+ int fpu = get_fpu_control_word();
+ int status = pthread_cond_timedwait(_cond, _mutex, _abstime);
+ set_fpu_control_word(fpu);
+ return status;
+ }
}
////////////////////////////////////////////////////////////////////////////////
@@ -4961,7 +4982,7 @@
st->print(PTR_FORMAT ": ", addr);
if (dlinfo.dli_sname != NULL && dlinfo.dli_saddr != NULL) {
st->print("%s+%#x", dlinfo.dli_sname,
- addr - (intptr_t)dlinfo.dli_saddr);
+ addr - (intptr_t)dlinfo.dli_saddr);
} else if (dlinfo.dli_fbase != NULL) {
st->print("<offset %#x>", addr - (intptr_t)dlinfo.dli_fbase);
} else {
@@ -4984,8 +5005,9 @@
if (begin < lowest) begin = lowest;
Dl_info dlinfo2;
if (dladdr(end, &dlinfo2) != 0 && dlinfo2.dli_saddr != dlinfo.dli_saddr
- && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin)
+ && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) {
end = (address) dlinfo2.dli_saddr;
+ }
Disassembler::decode(begin, end, st);
}
return true;
@@ -5041,10 +5063,6 @@
return true;
}
-int local_vsnprintf(char* buf, size_t count, const char* format, va_list args) {
- return ::vsnprintf(buf, count, format, args);
-}
-
// Is a (classpath) directory empty?
bool os::dir_is_empty(const char* path) {
DIR *dir = NULL;
@@ -5053,7 +5071,7 @@
dir = opendir(path);
if (dir == NULL) return true;
- /* Scan the directory */
+ // Scan the directory
bool result = true;
char buf[sizeof(struct dirent) + MAX_PATH];
while (result && (ptr = ::readdir(dir)) != NULL) {
@@ -5069,7 +5087,7 @@
// from src/solaris/hpi/src/system_md.c
#ifndef O_DELETE
-#define O_DELETE 0x10000
+ #define O_DELETE 0x10000
#endif
// Open a file. Unlink the file immediately after open returns
@@ -5077,7 +5095,6 @@
// O_DELETE is used only in j2se/src/share/native/java/util/zip/ZipFile.c
int os::open(const char *path, int oflag, int mode) {
-
if (strlen(path) > MAX_PATH - 1) {
errno = ENAMETOOLONG;
return -1;
@@ -5107,34 +5124,34 @@
}
}
- /*
- * All file descriptors that are opened in the JVM and not
- * specifically destined for a subprocess should have the
- * close-on-exec flag set. If we don't set it, then careless 3rd
- * party native code might fork and exec without closing all
- * appropriate file descriptors (e.g. as we do in closeDescriptors in
- * UNIXProcess.c), and this in turn might:
- *
- * - cause end-of-file to fail to be detected on some file
- * descriptors, resulting in mysterious hangs, or
- *
- * - might cause an fopen in the subprocess to fail on a system
- * suffering from bug 1085341.
- *
- * (Yes, the default setting of the close-on-exec flag is a Unix
- * design flaw)
- *
- * See:
- * 1085341: 32-bit stdio routines should support file descriptors >255
- * 4843136: (process) pipe file descriptor from Runtime.exec not being closed
- * 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9
- */
+ // All file descriptors that are opened in the JVM and not
+ // specifically destined for a subprocess should have the
+ // close-on-exec flag set. If we don't set it, then careless 3rd
+ // party native code might fork and exec without closing all
+ // appropriate file descriptors (e.g. as we do in closeDescriptors in
+ // UNIXProcess.c), and this in turn might:
+ //
+ // - cause end-of-file to fail to be detected on some file
+ // descriptors, resulting in mysterious hangs, or
+ //
+ // - might cause an fopen in the subprocess to fail on a system
+ // suffering from bug 1085341.
+ //
+ // (Yes, the default setting of the close-on-exec flag is a Unix
+ // design flaw)
+ //
+ // See:
+ // 1085341: 32-bit stdio routines should support file descriptors >255
+ // 4843136: (process) pipe file descriptor from Runtime.exec not being closed
+ // 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9
+ //
#ifdef FD_CLOEXEC
- {
- int flags = ::fcntl(fd, F_GETFD);
- if (flags != -1)
- ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
+ {
+ int flags = ::fcntl(fd, F_GETFD);
+ if (flags != -1) {
+ ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
}
+ }
#endif
if (o_delete != 0) {
@@ -5174,11 +5191,9 @@
if (::fstat64(fd, &buf64) >= 0) {
mode = buf64.st_mode;
if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
- /*
- * XXX: is the following call interruptible? If so, this might
- * need to go through the INTERRUPT_IO() wrapper as for other
- * blocking, interruptible calls in this file.
- */
+ // XXX: is the following call interruptible? If so, this might
+ // need to go through the INTERRUPT_IO() wrapper as for other
+ // blocking, interruptible calls in this file.
int n;
if (::ioctl(fd, FIONREAD, &n) >= 0) {
*bytes = n;
@@ -5208,8 +5223,8 @@
// Map a block of memory.
char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset,
- char *addr, size_t bytes, bool read_only,
- bool allow_exec) {
+ char *addr, size_t bytes, bool read_only,
+ bool allow_exec) {
int prot;
int flags = MAP_PRIVATE;
@@ -5238,8 +5253,8 @@
// Remap a block of memory.
char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset,
- char *addr, size_t bytes, bool read_only,
- bool allow_exec) {
+ char *addr, size_t bytes, bool read_only,
+ bool allow_exec) {
// same as map_memory() on this OS
return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only,
allow_exec);
@@ -5304,10 +5319,7 @@
}
}
-//
// -1 on error.
-//
-
static jlong slow_thread_cpu_time(Thread *thread, bool user_sys_cpu_time) {
pid_t tid = thread->osthread()->thread_id();
char *s;
@@ -5394,7 +5406,7 @@
}
} else {
jio_fprintf(stderr,
- "Could not open pause file '%s', continuing immediately.\n", filename);
+ "Could not open pause file '%s', continuing immediately.\n", filename);
}
}
@@ -5505,28 +5517,28 @@
int v;
for (;;) {
- v = _Event;
- if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
+ v = _Event;
+ if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
}
guarantee(v >= 0, "invariant");
if (v == 0) {
- // Do this the hard way by blocking ...
- int status = pthread_mutex_lock(_mutex);
- assert_status(status == 0, status, "mutex_lock");
- guarantee(_nParked == 0, "invariant");
- ++_nParked;
- while (_Event < 0) {
- status = pthread_cond_wait(_cond, _mutex);
- // for some reason, under 2.7 lwp_cond_wait() may return ETIME ...
- // Treat this the same as if the wait was interrupted
- if (status == ETIME) { status = EINTR; }
- assert_status(status == 0 || status == EINTR, status, "cond_wait");
- }
- --_nParked;
+ // Do this the hard way by blocking ...
+ int status = pthread_mutex_lock(_mutex);
+ assert_status(status == 0, status, "mutex_lock");
+ guarantee(_nParked == 0, "invariant");
+ ++_nParked;
+ while (_Event < 0) {
+ status = pthread_cond_wait(_cond, _mutex);
+ // for some reason, under 2.7 lwp_cond_wait() may return ETIME ...
+ // Treat this the same as if the wait was interrupted
+ if (status == ETIME) { status = EINTR; }
+ assert_status(status == 0 || status == EINTR, status, "cond_wait");
+ }
+ --_nParked;
_Event = 0;
- status = pthread_mutex_unlock(_mutex);
- assert_status(status == 0, status, "mutex_unlock");
+ status = pthread_mutex_unlock(_mutex);
+ assert_status(status == 0, status, "mutex_unlock");
// Paranoia to ensure our locked and lock-free paths interact
// correctly with each other.
OrderAccess::fence();
@@ -5539,8 +5551,8 @@
int v;
for (;;) {
- v = _Event;
- if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
+ v = _Event;
+ if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
}
guarantee(v >= 0, "invariant");
if (v != 0) return OS_OK;
@@ -5584,7 +5596,7 @@
}
--_nParked;
if (_Event >= 0) {
- ret = OS_OK;
+ ret = OS_OK;
}
_Event = 0;
status = pthread_mutex_unlock(_mutex);
@@ -5640,35 +5652,31 @@
// JSR166
// -------------------------------------------------------
-/*
- * The solaris and linux implementations of park/unpark are fairly
- * conservative for now, but can be improved. They currently use a
- * mutex/condvar pair, plus a a count.
- * Park decrements count if > 0, else does a condvar wait. Unpark
- * sets count to 1 and signals condvar. Only one thread ever waits
- * on the condvar. Contention seen when trying to park implies that someone
- * is unparking you, so don't wait. And spurious returns are fine, so there
- * is no need to track notifications.
- */
-
-/*
- * This code is common to linux and solaris and will be moved to a
- * common place in dolphin.
- *
- * The passed in time value is either a relative time in nanoseconds
- * or an absolute time in milliseconds. Either way it has to be unpacked
- * into suitable seconds and nanoseconds components and stored in the
- * given timespec structure.
- * Given time is a 64-bit value and the time_t used in the timespec is only
- * a signed-32-bit value (except on 64-bit Linux) we have to watch for
- * overflow if times way in the future are given. Further on Solaris versions
- * prior to 10 there is a restriction (see cond_timedwait) that the specified
- * number of seconds, in abstime, is less than current_time + 100,000,000.
- * As it will be 28 years before "now + 100000000" will overflow we can
- * ignore overflow and just impose a hard-limit on seconds using the value
- * of "now + 100,000,000". This places a limit on the timeout of about 3.17
- * years from "now".
- */
+// The solaris and linux implementations of park/unpark are fairly
+// conservative for now, but can be improved. They currently use a
+// mutex/condvar pair, plus a a count.
+// Park decrements count if > 0, else does a condvar wait. Unpark
+// sets count to 1 and signals condvar. Only one thread ever waits
+// on the condvar. Contention seen when trying to park implies that someone
+// is unparking you, so don't wait. And spurious returns are fine, so there
+// is no need to track notifications.
+
+// This code is common to linux and solaris and will be moved to a
+// common place in dolphin.
+//
+// The passed in time value is either a relative time in nanoseconds
+// or an absolute time in milliseconds. Either way it has to be unpacked
+// into suitable seconds and nanoseconds components and stored in the
+// given timespec structure.
+// Given time is a 64-bit value and the time_t used in the timespec is only
+// a signed-32-bit value (except on 64-bit Linux) we have to watch for
+// overflow if times way in the future are given. Further on Solaris versions
+// prior to 10 there is a restriction (see cond_timedwait) that the specified
+// number of seconds, in abstime, is less than current_time + 100,000,000.
+// As it will be 28 years before "now + 100000000" will overflow we can
+// ignore overflow and just impose a hard-limit on seconds using the value
+// of "now + 100,000,000". This places a limit on the timeout of about 3.17
+// years from "now".
static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) {
assert(time > 0, "convertTime");
@@ -5839,14 +5847,14 @@
if (_cur_index != -1) {
// thread is definitely parked
if (WorkAroundNPTLTimedWaitHang) {
- status = pthread_cond_signal (&_cond[_cur_index]);
+ status = pthread_cond_signal(&_cond[_cur_index]);
assert(status == 0, "invariant");
status = pthread_mutex_unlock(_mutex);
assert(status == 0, "invariant");
} else {
status = pthread_mutex_unlock(_mutex);
assert(status == 0, "invariant");
- status = pthread_cond_signal (&_cond[_cur_index]);
+ status = pthread_cond_signal(&_cond[_cur_index]);
assert(status == 0, "invariant");
}
} else {
@@ -5863,11 +5871,11 @@
extern char** environ;
#ifndef __NR_fork
-#define __NR_fork IA32_ONLY(2) IA64_ONLY(not defined) AMD64_ONLY(57)
+ #define __NR_fork IA32_ONLY(2) IA64_ONLY(not defined) AMD64_ONLY(57)
#endif
#ifndef __NR_execve
-#define __NR_execve IA32_ONLY(11) IA64_ONLY(1033) AMD64_ONLY(59)
+ #define __NR_execve IA32_ONLY(11) IA64_ONLY(1033) AMD64_ONLY(59)
#endif
// Run the specified command in a separate process. Return its exit value,
@@ -5883,7 +5891,7 @@
// On IA64 there's no fork syscall, we have to use fork() and hope for
// the best...
pid_t pid = NOT_IA64(syscall(__NR_fork);)
- IA64_ONLY(fork();)
+ IA64_ONLY(fork();)
if (pid < 0) {
// fork failed
@@ -5914,26 +5922,26 @@
// Wait for the child process to exit. This returns immediately if
// the child has already exited. */
while (waitpid(pid, &status, 0) < 0) {
- switch (errno) {
- case ECHILD: return 0;
- case EINTR: break;
- default: return -1;
- }
+ switch (errno) {
+ case ECHILD: return 0;
+ case EINTR: break;
+ default: return -1;
+ }
}
if (WIFEXITED(status)) {
- // The child exited normally; get its exit code.
- return WEXITSTATUS(status);
+ // The child exited normally; get its exit code.
+ return WEXITSTATUS(status);
} else if (WIFSIGNALED(status)) {
- // The child exited because of a signal
- // The best value to return is 0x80 + signal number,
- // because that is what all Unix shells do, and because
- // it allows callers to distinguish between process exit and
- // process death by signal.
- return 0x80 + WTERMSIG(status);
+ // The child exited because of a signal
+ // The best value to return is 0x80 + signal number,
+ // because that is what all Unix shells do, and because
+ // it allows callers to distinguish between process exit and
+ // process death by signal.
+ return 0x80 + WTERMSIG(status);
} else {
- // Unknown exit code; pass it through
- return status;
+ // Unknown exit code; pass it through
+ return status;
}
}
}
@@ -5947,37 +5955,43 @@
// as libawt.so, and renamed libawt_xawt.so
//
bool os::is_headless_jre() {
- struct stat statbuf;
- char buf[MAXPATHLEN];
- char libmawtpath[MAXPATHLEN];
- const char *xawtstr = "/xawt/libmawt.so";
- const char *new_xawtstr = "/libawt_xawt.so";
- char *p;
-
- // Get path to libjvm.so
- os::jvm_path(buf, sizeof(buf));
-
- // Get rid of libjvm.so
- p = strrchr(buf, '/');
- if (p == NULL) return false;
- else *p = '\0';
-
- // Get rid of client or server
- p = strrchr(buf, '/');
- if (p == NULL) return false;
- else *p = '\0';
-
- // check xawt/libmawt.so
- strcpy(libmawtpath, buf);
- strcat(libmawtpath, xawtstr);
- if (::stat(libmawtpath, &statbuf) == 0) return false;
-
- // check libawt_xawt.so
- strcpy(libmawtpath, buf);
- strcat(libmawtpath, new_xawtstr);
- if (::stat(libmawtpath, &statbuf) == 0) return false;
-
- return true;
+ struct stat statbuf;
+ char buf[MAXPATHLEN];
+ char libmawtpath[MAXPATHLEN];
+ const char *xawtstr = "/xawt/libmawt.so";
+ const char *new_xawtstr = "/libawt_xawt.so";
+ char *p;
+
+ // Get path to libjvm.so
+ os::jvm_path(buf, sizeof(buf));
+
+ // Get rid of libjvm.so
+ p = strrchr(buf, '/');
+ if (p == NULL) {
+ return false;
+ } else {
+ *p = '\0';
+ }
+
+ // Get rid of client or server
+ p = strrchr(buf, '/');
+ if (p == NULL) {
+ return false;
+ } else {
+ *p = '\0';
+ }
+
+ // check xawt/libmawt.so
+ strcpy(libmawtpath, buf);
+ strcat(libmawtpath, xawtstr);
+ if (::stat(libmawtpath, &statbuf) == 0) return false;
+
+ // check libawt_xawt.so
+ strcpy(libmawtpath, buf);
+ strcat(libmawtpath, new_xawtstr);
+ if (::stat(libmawtpath, &statbuf) == 0) return false;
+
+ return true;
}
// Get the default path to the core file
@@ -6052,14 +6066,13 @@
}
}
-//
// See if the /dev/mem_notify device exists, and if so, start a thread to monitor it.
//
void MemNotifyThread::start() {
- int fd;
- fd = open ("/dev/mem_notify", O_RDONLY, 0);
+ int fd;
+ fd = open("/dev/mem_notify", O_RDONLY, 0);
if (fd < 0) {
- return;
+ return;
}
if (memnotify_thread() == NULL) {
@@ -6074,12 +6087,12 @@
#ifndef PRODUCT
-#define test_log(...) \
- do {\
- if (VerboseInternalVMTests) { \
- tty->print_cr(__VA_ARGS__); \
- tty->flush(); \
- }\
+#define test_log(...) \
+ do { \
+ if (VerboseInternalVMTests) { \
+ tty->print_cr(__VA_ARGS__); \
+ tty->flush(); \
+ } \
} while (false)
class TestReserveMemorySpecial : AllStatic {
@@ -6123,11 +6136,11 @@
static void test_reserve_memory_special_huge_tlbfs_mixed(size_t size, size_t alignment) {
if (!UseHugeTLBFS) {
- return;
+ return;
}
test_log("test_reserve_memory_special_huge_tlbfs_mixed(" SIZE_FORMAT ", " SIZE_FORMAT ")",
- size, alignment);
+ size, alignment);
assert(size >= os::large_page_size(), "Incorrect input to test");
--- a/hotspot/src/os/linux/vm/os_linux.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/linux/vm/os_linux.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -27,8 +27,8 @@
// Linux_OS defines the interface to Linux operating systems
-/* pthread_getattr_np comes with LinuxThreads-0.9-7 on RedHat 7.1 */
-typedef int (*pthread_getattr_func_type) (pthread_t, pthread_attr_t *);
+// pthread_getattr_np comes with LinuxThreads-0.9-7 on RedHat 7.1
+typedef int (*pthread_getattr_func_type)(pthread_t, pthread_attr_t *);
// Information about the protection of the page at address '0' on this os.
static bool zero_page_read_protected() { return true; }
@@ -151,7 +151,7 @@
// that file provides extensions to the os class and not the
// Linux class.
static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc,
- intptr_t** ret_sp, intptr_t** ret_fp);
+ intptr_t** ret_sp, intptr_t** ret_fp);
// This boolean allows users to forward their own non-matching signals
// to JVM_handle_linux_signal, harmlessly.
@@ -222,10 +222,10 @@
static jlong fast_thread_cpu_time(clockid_t clockid);
// pthread_cond clock suppport
- private:
+ private:
static pthread_condattr_t _condattr[1];
- public:
+ public:
static pthread_condattr_t* condAttr() { return _condattr; }
// Stack repair handling
@@ -235,7 +235,7 @@
// LinuxThreads work-around for 6292965
static int safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime);
-private:
+ private:
typedef int (*sched_getcpu_func_t)(void);
typedef int (*numa_node_to_cpus_func_t)(int node, unsigned long *buffer, int bufferlen);
typedef int (*numa_max_node_func_t)(void);
@@ -262,7 +262,7 @@
static void set_numa_set_bind_policy(numa_set_bind_policy_func_t func) { _numa_set_bind_policy = func; }
static void set_numa_all_nodes(unsigned long* ptr) { _numa_all_nodes = ptr; }
static int sched_getcpu_syscall(void);
-public:
+ public:
static int sched_getcpu() { return _sched_getcpu != NULL ? _sched_getcpu() : -1; }
static int numa_node_to_cpus(int node, unsigned long *buffer, int bufferlen) {
return _numa_node_to_cpus != NULL ? _numa_node_to_cpus(node, buffer, bufferlen) : -1;
@@ -287,63 +287,63 @@
class PlatformEvent : public CHeapObj<mtInternal> {
- private:
- double CachePad[4]; // increase odds that _mutex is sole occupant of cache line
- volatile int _Event;
- volatile int _nParked;
- pthread_mutex_t _mutex[1];
- pthread_cond_t _cond[1];
- double PostPad[2];
- Thread * _Assoc;
+ private:
+ double CachePad[4]; // increase odds that _mutex is sole occupant of cache line
+ volatile int _Event;
+ volatile int _nParked;
+ pthread_mutex_t _mutex[1];
+ pthread_cond_t _cond[1];
+ double PostPad[2];
+ Thread * _Assoc;
- public: // TODO-FIXME: make dtor private
- ~PlatformEvent() { guarantee(0, "invariant"); }
+ public: // TODO-FIXME: make dtor private
+ ~PlatformEvent() { guarantee(0, "invariant"); }
- public:
- PlatformEvent() {
- int status;
- status = pthread_cond_init (_cond, os::Linux::condAttr());
- assert_status(status == 0, status, "cond_init");
- status = pthread_mutex_init (_mutex, NULL);
- assert_status(status == 0, status, "mutex_init");
- _Event = 0;
- _nParked = 0;
- _Assoc = NULL;
- }
+ public:
+ PlatformEvent() {
+ int status;
+ status = pthread_cond_init(_cond, os::Linux::condAttr());
+ assert_status(status == 0, status, "cond_init");
+ status = pthread_mutex_init(_mutex, NULL);
+ assert_status(status == 0, status, "mutex_init");
+ _Event = 0;
+ _nParked = 0;
+ _Assoc = NULL;
+ }
- // Use caution with reset() and fired() -- they may require MEMBARs
- void reset() { _Event = 0; }
- int fired() { return _Event; }
- void park();
- void unpark();
- int park(jlong millis); // relative timed-wait only
- void SetAssociation(Thread * a) { _Assoc = a; }
+ // Use caution with reset() and fired() -- they may require MEMBARs
+ void reset() { _Event = 0; }
+ int fired() { return _Event; }
+ void park();
+ void unpark();
+ int park(jlong millis); // relative timed-wait only
+ void SetAssociation(Thread * a) { _Assoc = a; }
};
class PlatformParker : public CHeapObj<mtInternal> {
- protected:
- enum {
- REL_INDEX = 0,
- ABS_INDEX = 1
- };
- int _cur_index; // which cond is in use: -1, 0, 1
- pthread_mutex_t _mutex[1];
- pthread_cond_t _cond[2]; // one for relative times and one for abs.
+ protected:
+ enum {
+ REL_INDEX = 0,
+ ABS_INDEX = 1
+ };
+ int _cur_index; // which cond is in use: -1, 0, 1
+ pthread_mutex_t _mutex[1];
+ pthread_cond_t _cond[2]; // one for relative times and one for abs.
- public: // TODO-FIXME: make dtor private
- ~PlatformParker() { guarantee(0, "invariant"); }
+ public: // TODO-FIXME: make dtor private
+ ~PlatformParker() { guarantee(0, "invariant"); }
- public:
- PlatformParker() {
- int status;
- status = pthread_cond_init (&_cond[REL_INDEX], os::Linux::condAttr());
- assert_status(status == 0, status, "cond_init rel");
- status = pthread_cond_init (&_cond[ABS_INDEX], NULL);
- assert_status(status == 0, status, "cond_init abs");
- status = pthread_mutex_init (_mutex, NULL);
- assert_status(status == 0, status, "mutex_init");
- _cur_index = -1; // mark as unused
- }
+ public:
+ PlatformParker() {
+ int status;
+ status = pthread_cond_init(&_cond[REL_INDEX], os::Linux::condAttr());
+ assert_status(status == 0, status, "cond_init rel");
+ status = pthread_cond_init(&_cond[ABS_INDEX], NULL);
+ assert_status(status == 0, status, "cond_init abs");
+ status = pthread_mutex_init(_mutex, NULL);
+ assert_status(status == 0, status, "mutex_init");
+ _cur_index = -1; // mark as unused
+ }
};
#endif // OS_LINUX_VM_OS_LINUX_HPP
--- a/hotspot/src/os/linux/vm/os_linux.inline.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/linux/vm/os_linux.inline.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -263,4 +263,8 @@
return Linux::_clock_gettime != NULL;
}
+inline void os::exit(int num) {
+ ::exit(num);
+}
+
#endif // OS_LINUX_VM_OS_LINUX_INLINE_HPP
--- a/hotspot/src/os/solaris/dtrace/generateJvmOffsets.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/solaris/dtrace/generateJvmOffsets.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -250,6 +250,7 @@
printf("\n");
GEN_OFFS(nmethod, _method);
+ GEN_OFFS(nmethod, _dependencies_offset);
GEN_OFFS(nmethod, _metadata_offset);
GEN_OFFS(nmethod, _scopes_data_offset);
GEN_OFFS(nmethod, _scopes_pcs_offset);
--- a/hotspot/src/os/solaris/dtrace/libjvm_db.c Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/solaris/dtrace/libjvm_db.c Thu Sep 25 16:21:54 2014 -0700
@@ -595,7 +595,7 @@
/* scopes_pcs */
err = ps_pread(J->P, nm + OFFSET_nmethod_scopes_pcs_offset, &N->scopes_pcs_beg, SZ32);
CHECK_FAIL(err);
- err = ps_pread(J->P, nm + OFFSET_nmethod_handler_table_offset, &N->scopes_pcs_end, SZ32);
+ err = ps_pread(J->P, nm + OFFSET_nmethod_dependencies_offset, &N->scopes_pcs_end, SZ32);
CHECK_FAIL(err);
/* scopes_data */
--- a/hotspot/src/os/solaris/vm/os_solaris.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/solaris/vm/os_solaris.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -124,17 +124,17 @@
// compile on older systems without this header file.
#ifndef MADV_ACCESS_LWP
-# define MADV_ACCESS_LWP 7 /* next LWP to access heavily */
+ #define MADV_ACCESS_LWP 7 /* next LWP to access heavily */
#endif
#ifndef MADV_ACCESS_MANY
-# define MADV_ACCESS_MANY 8 /* many processes to access heavily */
+ #define MADV_ACCESS_MANY 8 /* many processes to access heavily */
#endif
#ifndef LGRP_RSRC_CPU
-# define LGRP_RSRC_CPU 0 /* CPU resources */
+ #define LGRP_RSRC_CPU 0 /* CPU resources */
#endif
#ifndef LGRP_RSRC_MEM
-# define LGRP_RSRC_MEM 1 /* memory resources */
+ #define LGRP_RSRC_MEM 1 /* memory resources */
#endif
// see thr_setprio(3T) for the basis of these numbers
@@ -190,7 +190,7 @@
Thread* ThreadLocalStorage::_get_thread_cache[ThreadLocalStorage::_pd_cache_size] = {NULL};
#ifndef PRODUCT
-#define _PCT(n,d) ((100.0*(double)(n))/(double)(d))
+ #define _PCT(n,d) ((100.0*(double)(n))/(double)(d))
int ThreadLocalStorage::_tcacheHit = 0;
int ThreadLocalStorage::_tcacheMiss = 0;
@@ -200,7 +200,7 @@
tty->print_cr("Thread cache hits %d misses %d total %d percent %f\n",
_tcacheHit, _tcacheMiss, total, _PCT(_tcacheHit, total));
}
-#undef _PCT
+ #undef _PCT
#endif // PRODUCT
Thread* ThreadLocalStorage::get_thread_via_cache_slowly(uintptr_t raw_id,
@@ -210,8 +210,8 @@
address sp = os::current_stack_pointer();
guarantee(thread->_stack_base == NULL ||
(sp <= thread->_stack_base &&
- sp >= thread->_stack_base - thread->_stack_size) ||
- is_error_reported(),
+ sp >= thread->_stack_base - thread->_stack_size) ||
+ is_error_reported(),
"sp must be inside of selected thread stack");
thread->set_self_raw_id(raw_id); // mark for quick retrieval
@@ -332,7 +332,7 @@
static int _processors_online = 0;
- jint os::Solaris::_os_thread_limit = 0;
+jint os::Solaris::_os_thread_limit = 0;
volatile jint os::Solaris::_os_thread_count = 0;
julong os::available_memory() {
@@ -346,7 +346,7 @@
julong os::Solaris::_physical_memory = 0;
julong os::physical_memory() {
- return Solaris::physical_memory();
+ return Solaris::physical_memory();
}
static hrtime_t first_hrtime = 0;
@@ -356,8 +356,9 @@
void os::Solaris::initialize_system_info() {
set_processor_count(sysconf(_SC_NPROCESSORS_CONF));
- _processors_online = sysconf (_SC_NPROCESSORS_ONLN);
- _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE);
+ _processors_online = sysconf(_SC_NPROCESSORS_ONLN);
+ _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) *
+ (julong)sysconf(_SC_PAGESIZE);
}
int os::active_processor_count() {
@@ -432,14 +433,14 @@
next += 1;
}
if (found < *id_length) {
- // The loop above didn't identify the expected number of processors.
- // We could always retry the operation, calling sysconf(_SC_NPROCESSORS_ONLN)
- // and re-running the loop, above, but there's no guarantee of progress
- // if the system configuration is in flux. Instead, we just return what
- // we've got. Note that in the worst case find_processors_online() could
- // return an empty set. (As a fall-back in the case of the empty set we
- // could just return the ID of the current processor).
- *id_length = found;
+ // The loop above didn't identify the expected number of processors.
+ // We could always retry the operation, calling sysconf(_SC_NPROCESSORS_ONLN)
+ // and re-running the loop, above, but there's no guarantee of progress
+ // if the system configuration is in flux. Instead, we just return what
+ // we've got. Note that in the worst case find_processors_online() could
+ // return an empty set. (As a fall-back in the case of the empty set we
+ // could just return the ID of the current processor).
+ *id_length = found;
}
return true;
@@ -556,9 +557,8 @@
bool os::getenv(const char* name, char* buffer, int len) {
char* val = ::getenv(name);
- if (val == NULL
- || strlen(val) + 1 > len ) {
- if (len > 0) buffer[0] = 0; // return a null string
+ if (val == NULL || strlen(val) + 1 > len) {
+ if (len > 0) buffer[0] = 0; // return a null string
return false;
}
strcpy(buffer, val);
@@ -780,8 +780,7 @@
BREAKPOINT;
}
-bool os::obsolete_option(const JavaVMOption *option)
-{
+bool os::obsolete_option(const JavaVMOption *option) {
if (!strncmp(option->optionString, "-Xt", 3)) {
return true;
} else if (!strncmp(option->optionString, "-Xtm", 4)) {
@@ -906,7 +905,6 @@
}
void os::Solaris::hotspot_sigmask(Thread* thread) {
-
//Save caller's signal mask
sigset_t sigmask;
thr_sigsetmask(SIG_SETMASK, NULL, &sigmask);
@@ -932,7 +930,7 @@
#endif
OSThread* osthread = create_os_thread(thread, thr_self());
if (osthread == NULL) {
- return false;
+ return false;
}
// Initial thread state is RUNNABLE
@@ -952,9 +950,9 @@
#endif
if (_starting_thread == NULL) {
_starting_thread = create_os_thread(thread, main_thread);
- if (_starting_thread == NULL) {
- return false;
- }
+ if (_starting_thread == NULL) {
+ return false;
+ }
}
// The primodial thread is runnable from the start
@@ -970,7 +968,8 @@
}
-bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) {
+bool os::create_thread(Thread* thread, ThreadType thr_type,
+ size_t stack_size) {
// Allocate the OSThread object
OSThread* osthread = new OSThread(NULL, NULL);
if (osthread == NULL) {
@@ -980,27 +979,27 @@
if (ThreadPriorityVerbose) {
char *thrtyp;
switch (thr_type) {
- case vm_thread:
- thrtyp = (char *)"vm";
- break;
- case cgc_thread:
- thrtyp = (char *)"cgc";
- break;
- case pgc_thread:
- thrtyp = (char *)"pgc";
- break;
- case java_thread:
- thrtyp = (char *)"java";
- break;
- case compiler_thread:
- thrtyp = (char *)"compiler";
- break;
- case watcher_thread:
- thrtyp = (char *)"watcher";
- break;
- default:
- thrtyp = (char *)"unknown";
- break;
+ case vm_thread:
+ thrtyp = (char *)"vm";
+ break;
+ case cgc_thread:
+ thrtyp = (char *)"cgc";
+ break;
+ case pgc_thread:
+ thrtyp = (char *)"pgc";
+ break;
+ case java_thread:
+ thrtyp = (char *)"java";
+ break;
+ case compiler_thread:
+ thrtyp = (char *)"compiler";
+ break;
+ case watcher_thread:
+ thrtyp = (char *)"watcher";
+ break;
+ default:
+ thrtyp = (char *)"unknown";
+ break;
}
tty->print_cr("In create_thread, creating a %s thread\n", thrtyp);
}
@@ -1088,14 +1087,14 @@
return true;
}
-/* defined for >= Solaris 10. This allows builds on earlier versions
- * of Solaris to take advantage of the newly reserved Solaris JVM signals
- * With SIGJVM1, SIGJVM2, INTERRUPT_SIGNAL is SIGJVM1, ASYNC_SIGNAL is SIGJVM2
- * and -XX:+UseAltSigs does nothing since these should have no conflict
- */
+// defined for >= Solaris 10. This allows builds on earlier versions
+// of Solaris to take advantage of the newly reserved Solaris JVM signals
+// With SIGJVM1, SIGJVM2, INTERRUPT_SIGNAL is SIGJVM1, ASYNC_SIGNAL is SIGJVM2
+// and -XX:+UseAltSigs does nothing since these should have no conflict
+//
#if !defined(SIGJVM1)
-#define SIGJVM1 39
-#define SIGJVM2 40
+ #define SIGJVM1 39
+ #define SIGJVM2 40
#endif
debug_only(static bool signal_sets_initialized = false);
@@ -1104,14 +1103,15 @@
int os::Solaris::_SIGasync = ASYNC_SIGNAL;
bool os::Solaris::is_sig_ignored(int sig) {
- struct sigaction oact;
- sigaction(sig, (struct sigaction*)NULL, &oact);
- void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction)
- : CAST_FROM_FN_PTR(void*, oact.sa_handler);
- if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN))
- return true;
- else
- return false;
+ struct sigaction oact;
+ sigaction(sig, (struct sigaction*)NULL, &oact);
+ void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction)
+ : CAST_FROM_FN_PTR(void*, oact.sa_handler);
+ if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN)) {
+ return true;
+ } else {
+ return false;
+ }
}
// Note: SIGRTMIN is a macro that calls sysconf() so it will
@@ -1158,23 +1158,24 @@
sigaddset(&unblocked_sigs, os::Solaris::SIGasync());
if (!ReduceSignalUsage) {
- if (!os::Solaris::is_sig_ignored(SHUTDOWN1_SIGNAL)) {
+ if (!os::Solaris::is_sig_ignored(SHUTDOWN1_SIGNAL)) {
sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL);
sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL);
- }
- if (!os::Solaris::is_sig_ignored(SHUTDOWN2_SIGNAL)) {
+ }
+ if (!os::Solaris::is_sig_ignored(SHUTDOWN2_SIGNAL)) {
sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL);
sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL);
- }
- if (!os::Solaris::is_sig_ignored(SHUTDOWN3_SIGNAL)) {
+ }
+ if (!os::Solaris::is_sig_ignored(SHUTDOWN3_SIGNAL)) {
sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL);
sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL);
- }
+ }
}
// Fill in signals that are blocked by all but the VM thread.
sigemptyset(&vm_sigs);
- if (!ReduceSignalUsage)
+ if (!ReduceSignalUsage) {
sigaddset(&vm_sigs, BREAK_SIGNAL);
+ }
debug_only(signal_sets_initialized = true);
// For diagnostics only used in run_periodic_checks
@@ -1244,21 +1245,20 @@
assert(stack_size > 0, "Stack size calculation problem");
if (stack_size > jt->stack_size()) {
- NOT_PRODUCT(
- struct rlimit limits;
- getrlimit(RLIMIT_STACK, &limits);
- size_t size = adjust_stack_size(base, (size_t)limits.rlim_cur);
- assert(size >= jt->stack_size(), "Stack size problem in main thread");
- )
- tty->print_cr(
- "Stack size of %d Kb exceeds current limit of %d Kb.\n"
- "(Stack sizes are rounded up to a multiple of the system page size.)\n"
- "See limit(1) to increase the stack size limit.",
- stack_size / K, jt->stack_size() / K);
+#ifndef PRODUCT
+ struct rlimit limits;
+ getrlimit(RLIMIT_STACK, &limits);
+ size_t size = adjust_stack_size(base, (size_t)limits.rlim_cur);
+ assert(size >= jt->stack_size(), "Stack size problem in main thread");
+#endif
+ tty->print_cr("Stack size of %d Kb exceeds current limit of %d Kb.\n"
+ "(Stack sizes are rounded up to a multiple of the system page size.)\n"
+ "See limit(1) to increase the stack size limit.",
+ stack_size / K, jt->stack_size() / K);
vm_exit(1);
}
assert(jt->stack_size() >= stack_size,
- "Attempt to map more stack than was allocated");
+ "Attempt to map more stack than was allocated");
jt->set_stack_size(stack_size);
}
@@ -1281,7 +1281,7 @@
// The main thread must take the VMThread down synchronously
// before the main thread exits and frees up CodeHeap
guarantee((Thread::current()->osthread() == osthread
- || (osthread == VMThread::vm_thread()->osthread())), "os::free_thread but not current thread");
+ || (osthread == VMThread::vm_thread()->osthread())), "os::free_thread but not current thread");
if (Thread::current()->osthread() == osthread) {
// Restore caller's signal mask
sigset_t sigmask = osthread->caller_sigmask();
@@ -1325,32 +1325,35 @@
// JavaThread in Java code, and have stubs simply
// treat %g2 as a caller-save register, preserving it in a %lN.
thread_key_t tk;
- if (thr_keycreate( &tk, NULL))
+ if (thr_keycreate(&tk, NULL)) {
fatal(err_msg("os::allocate_thread_local_storage: thr_keycreate failed "
"(%s)", strerror(errno)));
+ }
return int(tk);
}
void os::free_thread_local_storage(int index) {
// %%% don't think we need anything here
- // if ( pthread_key_delete((pthread_key_t) tk) )
+ // if (pthread_key_delete((pthread_key_t) tk)) {
// fatal("os::free_thread_local_storage: pthread_key_delete failed");
-}
-
-#define SMALLINT 32 // libthread allocate for tsd_common is a version specific
- // small number - point is NO swap space available
+ // }
+}
+
+// libthread allocate for tsd_common is a version specific
+// small number - point is NO swap space available
+#define SMALLINT 32
void os::thread_local_storage_at_put(int index, void* value) {
// %%% this is used only in threadLocalStorage.cpp
if (thr_setspecific((thread_key_t)index, value)) {
if (errno == ENOMEM) {
- vm_exit_out_of_memory(SMALLINT, OOM_MALLOC_ERROR,
- "thr_setspecific: out of swap space");
+ vm_exit_out_of_memory(SMALLINT, OOM_MALLOC_ERROR,
+ "thr_setspecific: out of swap space");
} else {
fatal(err_msg("os::thread_local_storage_at_put: thr_setspecific failed "
"(%s)", strerror(errno)));
}
} else {
- ThreadLocalStorage::set_thread_in_slot((Thread *) value);
+ ThreadLocalStorage::set_thread_in_slot((Thread *) value);
}
}
@@ -1402,14 +1405,14 @@
}
jlong os::elapsed_frequency() {
- return hrtime_hz;
+ return hrtime_hz;
}
// Return the real, user, and system times in seconds from an
// arbitrary fixed point in the past.
bool os::getTimesSecs(double* process_real_time,
- double* process_user_time,
- double* process_system_time) {
+ double* process_user_time,
+ double* process_system_time) {
struct tms ticks;
clock_t real_ticks = times(&ticks);
@@ -1431,29 +1434,31 @@
bool os::enable_vtime() {
int fd = ::open("/proc/self/ctl", O_WRONLY);
- if (fd == -1)
+ if (fd == -1) {
return false;
+ }
long cmd[] = { PCSET, PR_MSACCT };
int res = ::write(fd, cmd, sizeof(long) * 2);
::close(fd);
- if (res != sizeof(long) * 2)
+ if (res != sizeof(long) * 2) {
return false;
-
+ }
return true;
}
bool os::vtime_enabled() {
int fd = ::open("/proc/self/status", O_RDONLY);
- if (fd == -1)
+ if (fd == -1) {
return false;
+ }
pstatus_t status;
int res = os::read(fd, (void*) &status, sizeof(pstatus_t));
::close(fd);
- if (res != sizeof(pstatus_t))
+ if (res != sizeof(pstatus_t)) {
return false;
-
+ }
return status.pr_flags & PR_MSACCT;
}
@@ -1471,8 +1476,9 @@
// Must return millis since Jan 1 1970 for JVM_CurrentTimeMillis
jlong os::javaTimeMillis() {
timeval t;
- if (gettimeofday( &t, NULL) == -1)
+ if (gettimeofday(&t, NULL) == -1) {
fatal(err_msg("os::javaTimeMillis: gettimeofday (%s)", strerror(errno)));
+ }
return jlong(t.tv_sec) * 1000 + jlong(t.tv_usec) / 1000;
}
@@ -1625,7 +1631,7 @@
return false;
}
-typedef int (*dladdr1_func_type) (void *, Dl_info *, void **, int);
+typedef int (*dladdr1_func_type)(void *, Dl_info *, void **, int);
static dladdr1_func_type dladdr1_func = NULL;
bool os::dll_address_to_function_name(address addr, char *buf,
@@ -1643,9 +1649,9 @@
// available even if the vm is built on a machine that does
// not have dladdr1 support. Make sure there is a value for
// RTLD_DL_SYMENT.
- #ifndef RTLD_DL_SYMENT
- #define RTLD_DL_SYMENT 1
- #endif
+#ifndef RTLD_DL_SYMENT
+ #define RTLD_DL_SYMENT 1
+#endif
#ifdef _LP64
Elf64_Sym * info;
#else
@@ -1772,12 +1778,11 @@
}
}
- // Loads .dll/.so and
- // in case of error it checks if .dll/.so was built for the
- // same architecture as Hotspot is running on
-
-void * os::dll_load(const char *filename, char *ebuf, int ebuflen)
-{
+// Loads .dll/.so and
+// in case of error it checks if .dll/.so was built for the
+// same architecture as Hotspot is running on
+
+void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
void * result= ::dlopen(filename, RTLD_LAZY);
if (result != NULL) {
// Successful loading
@@ -1808,7 +1813,7 @@
bool failed_to_read_elf_head=
(sizeof(elf_head)!=
- (::read(file_descriptor, &elf_head,sizeof(elf_head))));
+ (::read(file_descriptor, &elf_head,sizeof(elf_head))));
::close(file_descriptor);
if (failed_to_read_elf_head) {
@@ -1837,26 +1842,26 @@
{EM_ARM, EM_ARM, ELFCLASS32, ELFDATA2LSB, (char*)"ARM 32"}
};
- #if (defined IA32)
- static Elf32_Half running_arch_code=EM_386;
- #elif (defined AMD64)
- static Elf32_Half running_arch_code=EM_X86_64;
- #elif (defined IA64)
- static Elf32_Half running_arch_code=EM_IA_64;
- #elif (defined __sparc) && (defined _LP64)
- static Elf32_Half running_arch_code=EM_SPARCV9;
- #elif (defined __sparc) && (!defined _LP64)
- static Elf32_Half running_arch_code=EM_SPARC;
- #elif (defined __powerpc64__)
- static Elf32_Half running_arch_code=EM_PPC64;
- #elif (defined __powerpc__)
- static Elf32_Half running_arch_code=EM_PPC;
- #elif (defined ARM)
- static Elf32_Half running_arch_code=EM_ARM;
- #else
- #error Method os::dll_load requires that one of following is defined:\
- IA32, AMD64, IA64, __sparc, __powerpc__, ARM, ARM
- #endif
+#if (defined IA32)
+ static Elf32_Half running_arch_code=EM_386;
+#elif (defined AMD64)
+ static Elf32_Half running_arch_code=EM_X86_64;
+#elif (defined IA64)
+ static Elf32_Half running_arch_code=EM_IA_64;
+#elif (defined __sparc) && (defined _LP64)
+ static Elf32_Half running_arch_code=EM_SPARCV9;
+#elif (defined __sparc) && (!defined _LP64)
+ static Elf32_Half running_arch_code=EM_SPARC;
+#elif (defined __powerpc64__)
+ static Elf32_Half running_arch_code=EM_PPC64;
+#elif (defined __powerpc__)
+ static Elf32_Half running_arch_code=EM_PPC;
+#elif (defined ARM)
+ static Elf32_Half running_arch_code=EM_ARM;
+#else
+ #error Method os::dll_load requires that one of following is defined:\
+ IA32, AMD64, IA64, __sparc, __powerpc__, ARM, ARM
+#endif
// Identify compatability class for VM's architecture and library's architecture
// Obtain string descriptions for architectures
@@ -1875,7 +1880,7 @@
}
assert(running_arch_index != -1,
- "Didn't find running architecture code (running_arch_code) in arch_array");
+ "Didn't find running architecture code (running_arch_code) in arch_array");
if (running_arch_index == -1) {
// Even though running architecture detection failed
// we may still continue with reporting dlerror() message
@@ -1895,13 +1900,13 @@
if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) {
if (lib_arch.name!=NULL) {
::snprintf(diag_msg_buf, diag_msg_max_length-1,
- " (Possible cause: can't load %s-bit .so on a %s-bit platform)",
- lib_arch.name, arch_array[running_arch_index].name);
+ " (Possible cause: can't load %s-bit .so on a %s-bit platform)",
+ lib_arch.name, arch_array[running_arch_index].name);
} else {
::snprintf(diag_msg_buf, diag_msg_max_length-1,
- " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)",
- lib_arch.code,
- arch_array[running_arch_index].name);
+ " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)",
+ lib_arch.code,
+ arch_array[running_arch_index].name);
}
}
@@ -1929,7 +1934,7 @@
static bool _print_ascii_file(const char* filename, outputStream* st) {
int fd = ::open(filename, O_RDONLY);
if (fd == -1) {
- return false;
+ return false;
}
char buf[32];
@@ -1967,9 +1972,9 @@
void os::Solaris::print_distro_info(outputStream* st) {
if (!_print_ascii_file("/etc/release", st)) {
- st->print("Solaris");
- }
- st->cr();
+ st->print("Solaris");
+ }
+ st->cr();
}
void os::Solaris::print_libversion_info(outputStream* st) {
@@ -2068,7 +2073,7 @@
}
static void print_signal_handler(outputStream* st, int sig,
- char* buf, size_t buflen) {
+ char* buf, size_t buflen) {
struct sigaction sa;
sigaction(sig, NULL, &sa);
@@ -2102,13 +2107,13 @@
// Check: is it our handler?
if (handler == CAST_FROM_FN_PTR(address, signalHandler) ||
- handler == CAST_FROM_FN_PTR(address, sigINTRHandler)) {
+ handler == CAST_FROM_FN_PTR(address, sigINTRHandler)) {
// It is our signal handler
// check for flags
if (sa.sa_flags != os::Solaris::get_our_sigflags(sig)) {
st->print(
- ", flags was changed from " PTR32_FORMAT ", consider using jsig library",
- os::Solaris::get_our_sigflags(sig));
+ ", flags was changed from " PTR32_FORMAT ", consider using jsig library",
+ os::Solaris::get_our_sigflags(sig));
}
}
st->cr();
@@ -2232,7 +2237,6 @@
// from src/solaris/hpi/src/system_md.c
size_t os::lasterror(char *buf, size_t len) {
-
if (errno == 0) return 0;
const char *s = ::strerror(errno);
@@ -2253,7 +2257,7 @@
// Ctrl-C is pressed during error reporting, likely because the error
// handler fails to abort. Let VM die immediately.
if (sig == SIGINT && is_error_reported()) {
- os::die();
+ os::die();
}
os::signal_notify(sig);
@@ -2266,15 +2270,15 @@
}
class Semaphore : public StackObj {
- public:
- Semaphore();
- ~Semaphore();
- void signal();
- void wait();
- bool trywait();
- bool timedwait(unsigned int sec, int nsec);
- private:
- sema_t _semaphore;
+ public:
+ Semaphore();
+ ~Semaphore();
+ void signal();
+ void wait();
+ bool trywait();
+ bool timedwait(unsigned int sec, int nsec);
+ private:
+ sema_t _semaphore;
};
@@ -2327,9 +2331,10 @@
sigAct.sa_flags = SA_RESTART & ~SA_RESETHAND;
sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler);
- if (sigaction(signal_number, &sigAct, &oldSigAct))
+ if (sigaction(signal_number, &sigAct, &oldSigAct)) {
// -1 means registration failed
return (void *)-1;
+ }
return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler);
}
@@ -2338,10 +2343,8 @@
raise(signal_number);
}
-/*
- * The following code is moved from os.cpp for making this
- * code platform specific, which it is by its very nature.
- */
+// The following code is moved from os.cpp for making this
+// code platform specific, which it is by its very nature.
// a counter for each possible signal value
static int Sigexit = 0;
@@ -2373,13 +2376,13 @@
memset(pending_signals, 0, (sizeof(jint) * (Sigexit+1)));
if (UseSignalChaining) {
- chainedsigactions = (struct sigaction *)malloc(sizeof(struct sigaction)
- * (Maxsignum + 1), mtInternal);
- memset(chainedsigactions, 0, (sizeof(struct sigaction) * (Maxsignum + 1)));
- preinstalled_sigs = (int *)os::malloc(sizeof(int) * (Maxsignum + 1), mtInternal);
- memset(preinstalled_sigs, 0, (sizeof(int) * (Maxsignum + 1)));
- }
- ourSigFlags = (int*)malloc(sizeof(int) * (Maxsignum + 1 ), mtInternal);
+ chainedsigactions = (struct sigaction *)malloc(sizeof(struct sigaction)
+ * (Maxsignum + 1), mtInternal);
+ memset(chainedsigactions, 0, (sizeof(struct sigaction) * (Maxsignum + 1)));
+ preinstalled_sigs = (int *)os::malloc(sizeof(int) * (Maxsignum + 1), mtInternal);
+ memset(preinstalled_sigs, 0, (sizeof(int) * (Maxsignum + 1)));
+ }
+ ourSigFlags = (int*)malloc(sizeof(int) * (Maxsignum + 1), mtInternal);
memset(ourSigFlags, 0, sizeof(int) * (Maxsignum + 1));
}
@@ -2418,18 +2421,16 @@
thread->set_suspend_equivalent();
// cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
while ((ret = ::sema_wait(&sig_sem)) == EINTR)
- ;
+ ;
assert(ret == 0, "sema_wait() failed");
// were we externally suspended while we were waiting?
threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
if (threadIsSuspended) {
- //
// The semaphore has been incremented, but while we were waiting
// another thread suspended us. We don't want to continue running
// while suspended because that would surprise the thread that
// suspended us.
- //
ret = ::sema_post(&sig_sem);
assert(ret == 0, "sema_post() failed");
@@ -2538,29 +2539,30 @@
}
}
+size_t os::Solaris::page_size_for_alignment(size_t alignment) {
+ assert(is_size_aligned(alignment, (size_t) vm_page_size()),
+ err_msg(SIZE_FORMAT " is not aligned to " SIZE_FORMAT,
+ alignment, (size_t) vm_page_size()));
+
+ for (int i = 0; _page_sizes[i] != 0; i++) {
+ if (is_size_aligned(alignment, _page_sizes[i])) {
+ return _page_sizes[i];
+ }
+ }
+
+ return (size_t) vm_page_size();
+}
+
int os::Solaris::commit_memory_impl(char* addr, size_t bytes,
size_t alignment_hint, bool exec) {
int err = Solaris::commit_memory_impl(addr, bytes, exec);
- if (err == 0) {
- if (UseLargePages && (alignment_hint > (size_t)vm_page_size())) {
- // If the large page size has been set and the VM
- // is using large pages, use the large page size
- // if it is smaller than the alignment hint. This is
- // a case where the VM wants to use a larger alignment size
- // for its own reasons but still want to use large pages
- // (which is what matters to setting the mpss range.
- size_t page_size = 0;
- if (large_page_size() < alignment_hint) {
- assert(UseLargePages, "Expected to be here for large page use only");
- page_size = large_page_size();
- } else {
- // If the alignment hint is less than the large page
- // size, the VM wants a particular alignment (thus the hint)
- // for internal reasons. Try to set the mpss range using
- // the alignment_hint.
- page_size = alignment_hint;
- }
- // Since this is a hint, ignore any failures.
+ if (err == 0 && UseLargePages && alignment_hint > 0) {
+ assert(is_size_aligned(bytes, alignment_hint),
+ err_msg(SIZE_FORMAT " is not aligned to " SIZE_FORMAT, bytes, alignment_hint));
+
+ // The syscall memcntl requires an exact page size (see man memcntl for details).
+ size_t page_size = page_size_for_alignment(alignment_hint);
+ if (page_size > (size_t) vm_page_size()) {
(void)Solaris::setup_large_pages(addr, bytes, page_size);
}
}
@@ -2635,37 +2637,37 @@
// doesn't have any children. Typical leaf group is a CPU or a CPU/memory
// board. An LWP is assigned to one of these groups upon creation.
size_t os::numa_get_leaf_groups(int *ids, size_t size) {
- if ((ids[0] = Solaris::lgrp_root(Solaris::lgrp_cookie())) == -1) {
- ids[0] = 0;
- return 1;
- }
- int result_size = 0, top = 1, bottom = 0, cur = 0;
- for (int k = 0; k < size; k++) {
- int r = Solaris::lgrp_children(Solaris::lgrp_cookie(), ids[cur],
- (Solaris::lgrp_id_t*)&ids[top], size - top);
- if (r == -1) {
- ids[0] = 0;
- return 1;
- }
- if (!r) {
- // That's a leaf node.
- assert(bottom <= cur, "Sanity check");
- // Check if the node has memory
- if (Solaris::lgrp_resources(Solaris::lgrp_cookie(), ids[cur],
- NULL, 0, LGRP_RSRC_MEM) > 0) {
- ids[bottom++] = ids[cur];
- }
- }
- top += r;
- cur++;
- }
- if (bottom == 0) {
- // Handle a situation, when the OS reports no memory available.
- // Assume UMA architecture.
- ids[0] = 0;
- return 1;
- }
- return bottom;
+ if ((ids[0] = Solaris::lgrp_root(Solaris::lgrp_cookie())) == -1) {
+ ids[0] = 0;
+ return 1;
+ }
+ int result_size = 0, top = 1, bottom = 0, cur = 0;
+ for (int k = 0; k < size; k++) {
+ int r = Solaris::lgrp_children(Solaris::lgrp_cookie(), ids[cur],
+ (Solaris::lgrp_id_t*)&ids[top], size - top);
+ if (r == -1) {
+ ids[0] = 0;
+ return 1;
+ }
+ if (!r) {
+ // That's a leaf node.
+ assert(bottom <= cur, "Sanity check");
+ // Check if the node has memory
+ if (Solaris::lgrp_resources(Solaris::lgrp_cookie(), ids[cur],
+ NULL, 0, LGRP_RSRC_MEM) > 0) {
+ ids[bottom++] = ids[cur];
+ }
+ }
+ top += r;
+ cur++;
+ }
+ if (bottom == 0) {
+ // Handle a situation, when the OS reports no memory available.
+ // Assume UMA architecture.
+ ids[0] = 0;
+ return 1;
+ }
+ return bottom;
}
// Detect the topology change. Typically happens during CPU plugging-unplugging.
@@ -2727,7 +2729,8 @@
// Scan the pages from start to end until a page different than
// the one described in the info parameter is encountered.
-char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) {
+char *os::scan_pages(char *start, char* end, page_info* page_expected,
+ page_info* page_found) {
const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE };
const size_t types = sizeof(info_types) / sizeof(info_types[0]);
uint64_t addrs[MAX_MEMINFO_CNT], outdata[types * MAX_MEMINFO_CNT + 1];
@@ -2754,10 +2757,9 @@
if (outdata[types * i + 1] != page_expected->size) {
break;
}
- } else
- if (page_expected->size != 0) {
- break;
- }
+ } else if (page_expected->size != 0) {
+ break;
+ }
if ((validity[i] & 2) != 0 && page_expected->lgrp_id > 0) {
if (outdata[types * i] != page_expected->lgrp_id) {
@@ -2808,11 +2810,13 @@
return b;
}
-char* os::Solaris::anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed) {
+char* os::Solaris::anon_mmap(char* requested_addr, size_t bytes,
+ size_t alignment_hint, bool fixed) {
char* addr = requested_addr;
int flags = MAP_PRIVATE | MAP_NORESERVE;
- assert(!(fixed && (alignment_hint > 0)), "alignment hint meaningless with fixed mmap");
+ assert(!(fixed && (alignment_hint > 0)),
+ "alignment hint meaningless with fixed mmap");
if (fixed) {
flags |= MAP_FIXED;
@@ -2827,8 +2831,10 @@
return mmap_chunk(addr, bytes, flags, PROT_NONE);
}
-char* os::pd_reserve_memory(size_t bytes, char* requested_addr, size_t alignment_hint) {
- char* addr = Solaris::anon_mmap(requested_addr, bytes, alignment_hint, (requested_addr != NULL));
+char* os::pd_reserve_memory(size_t bytes, char* requested_addr,
+ size_t alignment_hint) {
+ char* addr = Solaris::anon_mmap(requested_addr, bytes, alignment_hint,
+ (requested_addr != NULL));
guarantee(requested_addr == NULL || requested_addr == addr,
"OS failed to return requested mmap address.");
@@ -3093,7 +3099,22 @@
}
}
+bool os::Solaris::is_valid_page_size(size_t bytes) {
+ for (int i = 0; _page_sizes[i] != 0; i++) {
+ if (_page_sizes[i] == bytes) {
+ return true;
+ }
+ }
+ return false;
+}
+
bool os::Solaris::setup_large_pages(caddr_t start, size_t bytes, size_t align) {
+ assert(is_valid_page_size(align), err_msg(SIZE_FORMAT " is not a valid page size", align));
+ assert(is_ptr_aligned((void*) start, align),
+ err_msg(PTR_FORMAT " is not aligned to " SIZE_FORMAT, p2i((void*) start), align));
+ assert(is_size_aligned(bytes, align),
+ err_msg(SIZE_FORMAT " is not aligned to " SIZE_FORMAT, bytes, align));
+
// Signal to OS that we want large pages for addresses
// from addr, addr + bytes
struct memcntl_mha mpss_struct;
@@ -3108,7 +3129,8 @@
return true;
}
-char* os::reserve_memory_special(size_t size, size_t alignment, char* addr, bool exec) {
+char* os::reserve_memory_special(size_t size, size_t alignment, char* addr,
+ bool exec) {
fatal("os::reserve_memory_special should not be called on Solaris.");
return NULL;
}
@@ -3145,7 +3167,7 @@
size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
size_t res;
assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_native,
- "Assumed _thread_in_native");
+ "Assumed _thread_in_native");
RESTARTABLE(::read(fd, buf, (size_t) nBytes), res);
return res;
}
@@ -3173,14 +3195,14 @@
static hrtime_t last_time = 0;
hrtime_t diff = getTimeNanos() - last_time;
- if (diff < DontYieldALotInterval * 1000000)
+ if (diff < DontYieldALotInterval * 1000000) {
return true;
+ }
last_time += diff;
return false;
- }
- else {
+ } else {
return false;
}
}
@@ -3240,9 +3262,9 @@
// sched class attributes
typedef struct {
- int schedPolicy; // classID
- int maxPrio;
- int minPrio;
+ int schedPolicy; // classID
+ int maxPrio;
+ int minPrio;
} SchedInfo;
@@ -3375,8 +3397,10 @@
myMax = MIN2(myMax, (int)fxInfo->fx_uprilim); // clamp - restrict
} else {
// No clue - punt
- if (ThreadPriorityVerbose)
- tty->print_cr("Unknown scheduling class: %s ... \n", ClassInfo.pc_clname);
+ if (ThreadPriorityVerbose) {
+ tty->print_cr("Unknown scheduling class: %s ... \n",
+ ClassInfo.pc_clname);
+ }
return EINVAL; // no clue, punt
}
@@ -3399,13 +3423,11 @@
// Convert from the libthread "thr_setprio" scale to our current
// lwp scheduling class scale.
//
-static
-int scale_to_lwp_priority (int rMin, int rMax, int x)
-{
+static int scale_to_lwp_priority(int rMin, int rMax, int x) {
int v;
if (x == 127) return rMax; // avoid round-down
- v = (((x*(rMax-rMin)))/128)+rMin;
+ v = (((x*(rMax-rMin)))/128)+rMin;
return v;
}
@@ -3428,8 +3450,9 @@
// If something went wrong on init, don't change priorities.
if (!priocntl_enable) {
- if (ThreadPriorityVerbose)
+ if (ThreadPriorityVerbose) {
tty->print_cr("Trying to set priority but init failed, ignoring");
+ }
return EINVAL;
}
@@ -3438,8 +3461,8 @@
if (lwpid <= 0) {
if (ThreadPriorityVerbose) {
tty->print_cr("deferring the set_lwp_class_and_priority of thread "
- INTPTR_FORMAT " to %d, lwpid not set",
- ThreadID, newPrio);
+ INTPTR_FORMAT " to %d, lwpid not set",
+ ThreadID, newPrio);
}
return 0;
}
@@ -3472,7 +3495,7 @@
iaparms_t* iaInfo = (iaparms_t*)ParmInfo.pc_clparms;
int maxClamped = MIN2(iaLimits.maxPrio,
cur_class == new_class
- ? (int)iaInfo->ia_uprilim : iaLimits.maxPrio);
+ ? (int)iaInfo->ia_uprilim : iaLimits.maxPrio);
iaInfo->ia_upri = scale ? scale_to_lwp_priority(iaLimits.minPrio,
maxClamped, newPrio)
: newPrio;
@@ -3487,7 +3510,7 @@
tsparms_t* tsInfo = (tsparms_t*)ParmInfo.pc_clparms;
int maxClamped = MIN2(tsLimits.maxPrio,
cur_class == new_class
- ? (int)tsInfo->ts_uprilim : tsLimits.maxPrio);
+ ? (int)tsInfo->ts_uprilim : tsLimits.maxPrio);
tsInfo->ts_upri = scale ? scale_to_lwp_priority(tsLimits.minPrio,
maxClamped, newPrio)
: newPrio;
@@ -3501,7 +3524,7 @@
fxparms_t* fxInfo = (fxparms_t*)ParmInfo.pc_clparms;
int maxClamped = MIN2(fxLimits.maxPrio,
cur_class == new_class
- ? (int)fxInfo->fx_uprilim : fxLimits.maxPrio);
+ ? (int)fxInfo->fx_uprilim : fxLimits.maxPrio);
fxInfo->fx_upri = scale ? scale_to_lwp_priority(fxLimits.minPrio,
maxClamped, newPrio)
: newPrio;
@@ -3591,7 +3614,6 @@
// Maximum priority an so on. This will cause VM threads
// to get unfair treatment against other Solaris processes
// which do not explicitly alter their thread priorities.
-//
int os::java_to_os_priority[CriticalPriority + 1] = {
-99999, // 0 Entry should never be used
@@ -3638,23 +3660,24 @@
int lwp_status =
set_lwp_class_and_priority(osthread->thread_id(),
- osthread->lwp_id(),
- newpri,
- fxcritical ? fxLimits.schedPolicy : myClass,
- !fxcritical);
+ osthread->lwp_id(),
+ newpri,
+ fxcritical ? fxLimits.schedPolicy : myClass,
+ !fxcritical);
if (lwp_status != 0 && fxcritical) {
// Try again, this time without changing the scheduling class
newpri = java_MaxPriority_to_os_priority;
lwp_status = set_lwp_class_and_priority(osthread->thread_id(),
- osthread->lwp_id(),
- newpri, myClass, false);
+ osthread->lwp_id(),
+ newpri, myClass, false);
}
status |= lwp_status;
return (status == 0) ? OS_OK : OS_ERR;
}
-OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) {
+OSReturn os::get_native_priority(const Thread* const thread,
+ int *priority_ptr) {
int p;
if (!UseThreadPriorities) {
*priority_ptr = NormalPriority;
@@ -3843,12 +3866,12 @@
}
class PcFetcher : public os::SuspendedThreadTask {
-public:
+ public:
PcFetcher(Thread* thread) : os::SuspendedThreadTask(thread) {}
ExtendedPC result();
-protected:
+ protected:
void do_task(const os::SuspendedThreadTaskContext& context);
-private:
+ private:
ExtendedPC _epc;
};
@@ -3883,7 +3906,9 @@
// This does not do anything on Solaris. This is basically a hook for being
// able to use structured exception handling (thread-local exception filters) on, e.g., Win32.
-void os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread) {
+void os::os_exception_wrapper(java_call_t f, JavaValue* value,
+ methodHandle* method, JavaCallArguments* args,
+ Thread* thread) {
f(value, method, args, thread);
}
@@ -3914,9 +3939,10 @@
// Note that the VM will print warnings if it detects conflicting signal
// handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers".
//
-extern "C" JNIEXPORT int
-JVM_handle_solaris_signal(int signo, siginfo_t* siginfo, void* ucontext,
- int abort_if_unrecognized);
+extern "C" JNIEXPORT int JVM_handle_solaris_signal(int signo,
+ siginfo_t* siginfo,
+ void* ucontext,
+ int abort_if_unrecognized);
void signalHandler(int sig, siginfo_t* info, void* ucVoid) {
@@ -3925,18 +3951,18 @@
errno = orig_errno;
}
-/* Do not delete - if guarantee is ever removed, a signal handler (even empty)
- is needed to provoke threads blocked on IO to return an EINTR
- Note: this explicitly does NOT call JVM_handle_solaris_signal and
- does NOT participate in signal chaining due to requirement for
- NOT setting SA_RESTART to make EINTR work. */
+// Do not delete - if guarantee is ever removed, a signal handler (even empty)
+// is needed to provoke threads blocked on IO to return an EINTR
+// Note: this explicitly does NOT call JVM_handle_solaris_signal and
+// does NOT participate in signal chaining due to requirement for
+// NOT setting SA_RESTART to make EINTR work.
extern "C" void sigINTRHandler(int sig, siginfo_t* info, void* ucVoid) {
- if (UseSignalChaining) {
- struct sigaction *actp = os::Solaris::get_chained_signal_action(sig);
- if (actp && actp->sa_handler) {
- vm_exit_during_initialization("Signal chaining detected for VM interrupt signal, try -XX:+UseAltSigs");
- }
- }
+ if (UseSignalChaining) {
+ struct sigaction *actp = os::Solaris::get_chained_signal_action(sig);
+ if (actp && actp->sa_handler) {
+ vm_exit_during_initialization("Signal chaining detected for VM interrupt signal, try -XX:+UseAltSigs");
+ }
+ }
}
// This boolean allows users to forward their own non-matching signals
@@ -4021,27 +4047,31 @@
}
struct sigaction* os::Solaris::get_preinstalled_handler(int sig) {
- assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized");
+ assert((chainedsigactions != (struct sigaction *)NULL) &&
+ (preinstalled_sigs != (int *)NULL), "signals not yet initialized");
if (preinstalled_sigs[sig] != 0) {
return &chainedsigactions[sig];
}
return NULL;
}
-void os::Solaris::save_preinstalled_handler(int sig, struct sigaction& oldAct) {
-
+void os::Solaris::save_preinstalled_handler(int sig,
+ struct sigaction& oldAct) {
assert(sig > 0 && sig <= Maxsignum, "vm signal out of expected range");
- assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized");
+ assert((chainedsigactions != (struct sigaction *)NULL) &&
+ (preinstalled_sigs != (int *)NULL), "signals not yet initialized");
chainedsigactions[sig] = oldAct;
preinstalled_sigs[sig] = 1;
}
-void os::Solaris::set_signal_handler(int sig, bool set_installed, bool oktochain) {
+void os::Solaris::set_signal_handler(int sig, bool set_installed,
+ bool oktochain) {
// Check for overwrite.
struct sigaction oldAct;
sigaction(sig, (struct sigaction*)NULL, &oldAct);
- void* oldhand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction)
- : CAST_FROM_FN_PTR(void*, oldAct.sa_handler);
+ void* oldhand =
+ oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction)
+ : CAST_FROM_FN_PTR(void*, oldAct.sa_handler);
if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) &&
oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) &&
oldhand != CAST_FROM_FN_PTR(void*, signalHandler)) {
@@ -4072,9 +4102,9 @@
// not using stack banging
if (!UseStackBanging && sig == SIGSEGV) {
sigAct.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK;
- // Interruptible i/o requires SA_RESTART cleared so EINTR
- // is returned instead of restarting system calls
} else if (sig == os::Solaris::SIGinterrupt()) {
+ // Interruptible i/o requires SA_RESTART cleared so EINTR
+ // is returned instead of restarting system calls
sigemptyset(&sigAct.sa_mask);
sigAct.sa_handler = NULL;
sigAct.sa_flags = SA_SIGINFO;
@@ -4092,9 +4122,12 @@
}
-#define DO_SIGNAL_CHECK(sig) \
- if (!sigismember(&check_signal_done, sig)) \
- os::Solaris::check_signal_handler(sig)
+#define DO_SIGNAL_CHECK(sig) \
+ do { \
+ if (!sigismember(&check_signal_done, sig)) { \
+ os::Solaris::check_signal_handler(sig); \
+ } \
+ } while (0)
// This method is a periodic task to check for misbehaving JNI applications
// under CheckJNI, we can add any periodic checks here
@@ -4155,34 +4188,34 @@
switch (sig) {
- case SIGSEGV:
- case SIGBUS:
- case SIGFPE:
- case SIGPIPE:
- case SIGXFSZ:
- case SIGILL:
+ case SIGSEGV:
+ case SIGBUS:
+ case SIGFPE:
+ case SIGPIPE:
+ case SIGXFSZ:
+ case SIGILL:
+ jvmHandler = CAST_FROM_FN_PTR(address, signalHandler);
+ break;
+
+ case SHUTDOWN1_SIGNAL:
+ case SHUTDOWN2_SIGNAL:
+ case SHUTDOWN3_SIGNAL:
+ case BREAK_SIGNAL:
+ jvmHandler = (address)user_handler();
+ break;
+
+ default:
+ int intrsig = os::Solaris::SIGinterrupt();
+ int asynsig = os::Solaris::SIGasync();
+
+ if (sig == intrsig) {
+ jvmHandler = CAST_FROM_FN_PTR(address, sigINTRHandler);
+ } else if (sig == asynsig) {
jvmHandler = CAST_FROM_FN_PTR(address, signalHandler);
- break;
-
- case SHUTDOWN1_SIGNAL:
- case SHUTDOWN2_SIGNAL:
- case SHUTDOWN3_SIGNAL:
- case BREAK_SIGNAL:
- jvmHandler = (address)user_handler();
- break;
-
- default:
- int intrsig = os::Solaris::SIGinterrupt();
- int asynsig = os::Solaris::SIGasync();
-
- if (sig == intrsig) {
- jvmHandler = CAST_FROM_FN_PTR(address, sigINTRHandler);
- } else if (sig == asynsig) {
- jvmHandler = CAST_FROM_FN_PTR(address, signalHandler);
- } else {
- return;
- }
- break;
+ } else {
+ return;
+ }
+ break;
}
@@ -4253,7 +4286,7 @@
// Pre-1.4.1 Libjsig limited to signal chaining signals <= 32 so
// can not register overridable signals which might be > 32
if (libjsig_is_loaded && libjsigversion <= JSIG_VERSION_1_4_1) {
- // Tell libjsig jvm has finished setting signal handlers
+ // Tell libjsig jvm has finished setting signal handlers
(*end_signal_setting)();
libjsigdone = true;
}
@@ -4288,7 +4321,8 @@
}
-void report_error(const char* file_name, int line_no, const char* title, const char* format, ...);
+void report_error(const char* file_name, int line_no, const char* title,
+ const char* format, ...);
const char * signames[] = {
"SIG0",
@@ -4306,9 +4340,9 @@
if (0 < exception_code && exception_code <= SIGRTMAX) {
// signal
if (exception_code < sizeof(signames)/sizeof(const char*)) {
- jio_snprintf(buf, size, "%s", signames[exception_code]);
+ jio_snprintf(buf, size, "%s", signames[exception_code]);
} else {
- jio_snprintf(buf, size, "SIG%d", exception_code);
+ jio_snprintf(buf, size, "SIG%d", exception_code);
}
return buf;
} else {
@@ -4402,8 +4436,7 @@
os::Solaris::set_cond_init(lwp_cond_init);
os::Solaris::set_cond_destroy(lwp_cond_destroy);
os::Solaris::set_cond_scope(USYNC_THREAD);
- }
- else {
+ } else {
os::Solaris::set_mutex_scope(USYNC_THREAD);
os::Solaris::set_cond_scope(USYNC_THREAD);
@@ -4420,8 +4453,7 @@
os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_broadcast")));
os::Solaris::set_cond_init(pthread_cond_default_init);
os::Solaris::set_cond_destroy(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_destroy")));
- }
- else {
+ } else {
os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_lock")));
os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_trylock")));
os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_unlock")));
@@ -4449,7 +4481,7 @@
os::Solaris::set_lgrp_resources(CAST_TO_FN_PTR(lgrp_resources_func_t, dlsym(handle, "lgrp_resources")));
os::Solaris::set_lgrp_nlgrps(CAST_TO_FN_PTR(lgrp_nlgrps_func_t, dlsym(handle, "lgrp_nlgrps")));
os::Solaris::set_lgrp_cookie_stale(CAST_TO_FN_PTR(lgrp_cookie_stale_func_t,
- dlsym(handle, "lgrp_cookie_stale")));
+ dlsym(handle, "lgrp_cookie_stale")));
lgrp_cookie_t c = lgrp_init(LGRP_VIEW_CALLER);
set_lgrp_cookie(c);
@@ -4502,9 +4534,10 @@
init_random(1234567);
page_size = sysconf(_SC_PAGESIZE);
- if (page_size == -1)
+ if (page_size == -1) {
fatal(err_msg("os_solaris.cpp: os::init: sysconf failed (%s)",
strerror(errno)));
+ }
init_page_sizes((size_t) page_size);
Solaris::initialize_system_info();
@@ -4530,8 +4563,9 @@
// and is available on linker patches for 5.7 and 5.8.
// libdl.so must have been loaded, this call is just an entry lookup
void * hdl = dlopen("libdl.so", RTLD_NOW);
- if (hdl)
+ if (hdl) {
dladdr1_func = CAST_TO_FN_PTR(dladdr1_func_type, dlsym(hdl, "dladdr1"));
+ }
// (Solaris only) this switches to calls that actually do locking.
ThreadCritical::initialize();
@@ -4579,8 +4613,10 @@
os::set_polling_page(polling_page);
#ifndef PRODUCT
- if (Verbose && PrintMiscellaneous)
- tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page);
+ if (Verbose && PrintMiscellaneous) {
+ tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n",
+ (intptr_t)polling_page);
+ }
#endif
if (!UseMembar) {
@@ -4589,8 +4625,10 @@
os::set_memory_serialize_page(mem_serialize_page);
#ifndef PRODUCT
- if (Verbose && PrintMiscellaneous)
- tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page);
+ if (Verbose && PrintMiscellaneous) {
+ tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n",
+ (intptr_t)mem_serialize_page);
+ }
#endif
}
@@ -4600,12 +4638,12 @@
// Add in 2*BytesPerWord times page size to account for VM stack during
// class initialization depending on 32 or 64 bit VM.
os::Solaris::min_stack_allowed = MAX2(os::Solaris::min_stack_allowed,
- (size_t)(StackYellowPages+StackRedPages+StackShadowPages+
- 2*BytesPerWord COMPILER2_PRESENT(+1)) * page_size);
+ (size_t)(StackYellowPages+StackRedPages+StackShadowPages+
+ 2*BytesPerWord COMPILER2_PRESENT(+1)) * page_size);
size_t threadStackSizeInBytes = ThreadStackSize * K;
if (threadStackSizeInBytes != 0 &&
- threadStackSizeInBytes < os::Solaris::min_stack_allowed) {
+ threadStackSizeInBytes < os::Solaris::min_stack_allowed) {
tty->print_cr("\nThe stack size specified is too small, Specify at least %dk",
os::Solaris::min_stack_allowed/K);
return JNI_ERR;
@@ -4619,17 +4657,17 @@
// should be to fix the guard page mechanism.
if (vm_page_size() > 8*K) {
- threadStackSizeInBytes = (threadStackSizeInBytes != 0)
- ? threadStackSizeInBytes +
- ((StackYellowPages + StackRedPages) * vm_page_size())
- : 0;
- ThreadStackSize = threadStackSizeInBytes/K;
+ threadStackSizeInBytes = (threadStackSizeInBytes != 0)
+ ? threadStackSizeInBytes +
+ ((StackYellowPages + StackRedPages) * vm_page_size())
+ : 0;
+ ThreadStackSize = threadStackSizeInBytes/K;
}
// Make the stack size a multiple of the page size so that
// the yellow/red zones can be guarded.
JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes,
- vm_page_size()));
+ vm_page_size()));
Solaris::libthread_init();
@@ -4669,14 +4707,16 @@
struct rlimit nbr_files;
int status = getrlimit(RLIMIT_NOFILE, &nbr_files);
if (status != 0) {
- if (PrintMiscellaneous && (Verbose || WizardMode))
+ if (PrintMiscellaneous && (Verbose || WizardMode)) {
perror("os::init_2 getrlimit failed");
+ }
} else {
nbr_files.rlim_cur = nbr_files.rlim_max;
status = setrlimit(RLIMIT_NOFILE, &nbr_files);
if (status != 0) {
- if (PrintMiscellaneous && (Verbose || WizardMode))
+ if (PrintMiscellaneous && (Verbose || WizardMode)) {
perror("os::init_2 setrlimit failed");
+ }
}
}
}
@@ -4728,41 +4768,22 @@
// Mark the polling page as unreadable
void os::make_polling_page_unreadable(void) {
- if (mprotect((char *)_polling_page, page_size, PROT_NONE) != 0)
+ if (mprotect((char *)_polling_page, page_size, PROT_NONE) != 0) {
fatal("Could not disable polling page");
-};
+ }
+}
// Mark the polling page as readable
void os::make_polling_page_readable(void) {
- if (mprotect((char *)_polling_page, page_size, PROT_READ) != 0)
+ if (mprotect((char *)_polling_page, page_size, PROT_READ) != 0) {
fatal("Could not enable polling page");
-};
+ }
+}
// OS interface.
bool os::check_heap(bool force) { return true; }
-typedef int (*vsnprintf_t)(char* buf, size_t count, const char* fmt, va_list argptr);
-static vsnprintf_t sol_vsnprintf = NULL;
-
-int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) {
- if (!sol_vsnprintf) {
- //search for the named symbol in the objects that were loaded after libjvm
- void* where = RTLD_NEXT;
- if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL)
- sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf"));
- if (!sol_vsnprintf){
- //search for the named symbol in the objects that were loaded before libjvm
- where = RTLD_DEFAULT;
- if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL)
- sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf"));
- assert(sol_vsnprintf != NULL, "vsnprintf not found");
- }
- }
- return (*sol_vsnprintf)(buf, count, fmt, argptr);
-}
-
-
// Is a (classpath) directory empty?
bool os::dir_is_empty(const char* path) {
DIR *dir = NULL;
@@ -4771,7 +4792,7 @@
dir = opendir(path);
if (dir == NULL) return true;
- /* Scan the directory */
+ // Scan the directory
bool result = true;
char buf[sizeof(struct dirent) + MAX_PATH];
struct dirent *dbuf = (struct dirent *) buf;
@@ -4788,7 +4809,7 @@
// from src/solaris/hpi/src/system_md.c
#ifndef O_DELETE
-#define O_DELETE 0x10000
+ #define O_DELETE 0x10000
#endif
// Open a file. Unlink the file immediately after open returns
@@ -4807,7 +4828,7 @@
fd = ::open64(path, oflag, mode);
if (fd == -1) return -1;
- //If the open succeeded, the file might still be a directory
+ // If the open succeeded, the file might still be a directory
{
struct stat64 buf64;
int ret = ::fstat64(fd, &buf64);
@@ -4824,77 +4845,78 @@
return -1;
}
}
- /*
- * 32-bit Solaris systems suffer from:
- *
- * - an historical default soft limit of 256 per-process file
- * descriptors that is too low for many Java programs.
- *
- * - a design flaw where file descriptors created using stdio
- * fopen must be less than 256, _even_ when the first limit above
- * has been raised. This can cause calls to fopen (but not calls to
- * open, for example) to fail mysteriously, perhaps in 3rd party
- * native code (although the JDK itself uses fopen). One can hardly
- * criticize them for using this most standard of all functions.
- *
- * We attempt to make everything work anyways by:
- *
- * - raising the soft limit on per-process file descriptors beyond
- * 256
- *
- * - As of Solaris 10u4, we can request that Solaris raise the 256
- * stdio fopen limit by calling function enable_extended_FILE_stdio.
- * This is done in init_2 and recorded in enabled_extended_FILE_stdio
- *
- * - If we are stuck on an old (pre 10u4) Solaris system, we can
- * workaround the bug by remapping non-stdio file descriptors below
- * 256 to ones beyond 256, which is done below.
- *
- * See:
- * 1085341: 32-bit stdio routines should support file descriptors >255
- * 6533291: Work around 32-bit Solaris stdio limit of 256 open files
- * 6431278: Netbeans crash on 32 bit Solaris: need to call
- * enable_extended_FILE_stdio() in VM initialisation
- * Giri Mandalika's blog
- * http://technopark02.blogspot.com/2005_05_01_archive.html
- */
+
+ // 32-bit Solaris systems suffer from:
+ //
+ // - an historical default soft limit of 256 per-process file
+ // descriptors that is too low for many Java programs.
+ //
+ // - a design flaw where file descriptors created using stdio
+ // fopen must be less than 256, _even_ when the first limit above
+ // has been raised. This can cause calls to fopen (but not calls to
+ // open, for example) to fail mysteriously, perhaps in 3rd party
+ // native code (although the JDK itself uses fopen). One can hardly
+ // criticize them for using this most standard of all functions.
+ //
+ // We attempt to make everything work anyways by:
+ //
+ // - raising the soft limit on per-process file descriptors beyond
+ // 256
+ //
+ // - As of Solaris 10u4, we can request that Solaris raise the 256
+ // stdio fopen limit by calling function enable_extended_FILE_stdio.
+ // This is done in init_2 and recorded in enabled_extended_FILE_stdio
+ //
+ // - If we are stuck on an old (pre 10u4) Solaris system, we can
+ // workaround the bug by remapping non-stdio file descriptors below
+ // 256 to ones beyond 256, which is done below.
+ //
+ // See:
+ // 1085341: 32-bit stdio routines should support file descriptors >255
+ // 6533291: Work around 32-bit Solaris stdio limit of 256 open files
+ // 6431278: Netbeans crash on 32 bit Solaris: need to call
+ // enable_extended_FILE_stdio() in VM initialisation
+ // Giri Mandalika's blog
+ // http://technopark02.blogspot.com/2005_05_01_archive.html
+ //
#ifndef _LP64
- if ((!enabled_extended_FILE_stdio) && fd < 256) {
- int newfd = ::fcntl(fd, F_DUPFD, 256);
- if (newfd != -1) {
- ::close(fd);
- fd = newfd;
- }
- }
+ if ((!enabled_extended_FILE_stdio) && fd < 256) {
+ int newfd = ::fcntl(fd, F_DUPFD, 256);
+ if (newfd != -1) {
+ ::close(fd);
+ fd = newfd;
+ }
+ }
#endif // 32-bit Solaris
- /*
- * All file descriptors that are opened in the JVM and not
- * specifically destined for a subprocess should have the
- * close-on-exec flag set. If we don't set it, then careless 3rd
- * party native code might fork and exec without closing all
- * appropriate file descriptors (e.g. as we do in closeDescriptors in
- * UNIXProcess.c), and this in turn might:
- *
- * - cause end-of-file to fail to be detected on some file
- * descriptors, resulting in mysterious hangs, or
- *
- * - might cause an fopen in the subprocess to fail on a system
- * suffering from bug 1085341.
- *
- * (Yes, the default setting of the close-on-exec flag is a Unix
- * design flaw)
- *
- * See:
- * 1085341: 32-bit stdio routines should support file descriptors >255
- * 4843136: (process) pipe file descriptor from Runtime.exec not being closed
- * 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9
- */
+
+ // All file descriptors that are opened in the JVM and not
+ // specifically destined for a subprocess should have the
+ // close-on-exec flag set. If we don't set it, then careless 3rd
+ // party native code might fork and exec without closing all
+ // appropriate file descriptors (e.g. as we do in closeDescriptors in
+ // UNIXProcess.c), and this in turn might:
+ //
+ // - cause end-of-file to fail to be detected on some file
+ // descriptors, resulting in mysterious hangs, or
+ //
+ // - might cause an fopen in the subprocess to fail on a system
+ // suffering from bug 1085341.
+ //
+ // (Yes, the default setting of the close-on-exec flag is a Unix
+ // design flaw)
+ //
+ // See:
+ // 1085341: 32-bit stdio routines should support file descriptors >255
+ // 4843136: (process) pipe file descriptor from Runtime.exec not being closed
+ // 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9
+ //
#ifdef FD_CLOEXEC
- {
- int flags = ::fcntl(fd, F_GETFD);
- if (flags != -1)
- ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
+ {
+ int flags = ::fcntl(fd, F_GETFD);
+ if (flags != -1) {
+ ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
}
+ }
#endif
if (o_delete != 0) {
@@ -4940,7 +4962,7 @@
int os::available(int fd, jlong *bytes) {
assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_native,
- "Assumed _thread_in_native");
+ "Assumed _thread_in_native");
jlong cur, end;
int mode;
struct stat64 buf64;
@@ -4952,7 +4974,7 @@
RESTARTABLE(::ioctl(fd, FIONREAD, &n), ioctl_return);
if (ioctl_return>= 0) {
- *bytes = n;
+ *bytes = n;
return 1;
}
}
@@ -4970,8 +4992,8 @@
// Map a block of memory.
char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset,
- char *addr, size_t bytes, bool read_only,
- bool allow_exec) {
+ char *addr, size_t bytes, bool read_only,
+ bool allow_exec) {
int prot;
int flags;
@@ -5002,8 +5024,8 @@
// Remap a block of memory.
char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset,
- char *addr, size_t bytes, bool read_only,
- bool allow_exec) {
+ char *addr, size_t bytes, bool read_only,
+ bool allow_exec) {
// same as map_memory() on this OS
return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only,
allow_exec);
@@ -5032,7 +5054,7 @@
}
} else {
jio_fprintf(stderr,
- "Could not open pause file '%s', continuing immediately.\n", filename);
+ "Could not open pause file '%s', continuing immediately.\n", filename);
}
}
@@ -5048,9 +5070,8 @@
class RecordSynch {
char* _name;
public:
- RecordSynch(char* name) :_name(name)
- { record_synch(_name, false); }
- ~RecordSynch() { record_synch(_name, true); }
+ RecordSynch(char* name) :_name(name) { record_synch(_name, false); }
+ ~RecordSynch() { record_synch(_name, true); }
};
#define CHECK_SYNCH_OP(ret, name, params, args, inner) \
@@ -5080,7 +5101,7 @@
if (!CHECK_POINTER_OK(p)) fatal(false, "Pointer must be in C heap only.");
#define CHECK_MUTEX(mutex_op) \
-CHECK_SYNCH_OP(int, mutex_op, (mutex_t *mu), (mu), CHECK_MU);
+ CHECK_SYNCH_OP(int, mutex_op, (mutex_t *mu), (mu), CHECK_MU);
CHECK_MUTEX( mutex_lock)
CHECK_MUTEX( _mutex_lock)
@@ -5090,14 +5111,14 @@
CHECK_MUTEX(_mutex_trylock)
#define CHECK_COND(cond_op) \
-CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu), (cv, mu), CHECK_MU;CHECK_CV);
+ CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu), (cv, mu), CHECK_MU; CHECK_CV);
CHECK_COND( cond_wait);
CHECK_COND(_cond_wait);
CHECK_COND(_cond_wait_cancel);
#define CHECK_COND2(cond_op) \
-CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu, timestruc_t* ts), (cv, mu, ts), CHECK_MU;CHECK_CV);
+ CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu, timestruc_t* ts), (cv, mu, ts), CHECK_MU; CHECK_CV);
CHECK_COND2( cond_timedwait);
CHECK_COND2(_cond_timedwait);
@@ -5221,16 +5242,16 @@
int fd;
sprintf(proc_name, "/proc/%d/lwp/%d/lwpusage",
- getpid(),
- thread->osthread()->lwp_id());
+ getpid(),
+ thread->osthread()->lwp_id());
fd = ::open(proc_name, O_RDONLY);
if (fd == -1) return -1;
do {
count = ::pread(fd,
- (void *)&prusage.pr_utime,
- thr_time_size,
- thr_time_off);
+ (void *)&prusage.pr_utime,
+ thr_time_size,
+ thr_time_off);
} while (count < 0 && errno == EINTR);
::close(fd);
if (count < 0) return -1;
@@ -5288,10 +5309,11 @@
st->print(PTR_FORMAT ": ", addr);
if (dlinfo.dli_sname != NULL && dlinfo.dli_saddr != NULL) {
st->print("%s+%#lx", dlinfo.dli_sname, addr-(intptr_t)dlinfo.dli_saddr);
- } else if (dlinfo.dli_fbase != NULL)
+ } else if (dlinfo.dli_fbase != NULL) {
st->print("<offset %#lx>", addr-(intptr_t)dlinfo.dli_fbase);
- else
+ } else {
st->print("<absolute address>");
+ }
if (dlinfo.dli_fname != NULL) {
st->print(" in %s", dlinfo.dli_fname);
}
@@ -5309,8 +5331,9 @@
if (begin < lowest) begin = lowest;
Dl_info dlinfo2;
if (dladdr(end, &dlinfo2) != 0 && dlinfo2.dli_saddr != dlinfo.dli_saddr
- && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin)
+ && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) {
end = (address) dlinfo2.dli_saddr;
+ }
Disassembler::decode(begin, end, st);
}
return true;
@@ -5426,15 +5449,15 @@
// leave it alone rather than always rounding down.
if (millis > 0 && millis < ROUNDINGFIX) millis = ROUNDINGFIX;
- // It appears that when we go directly through Solaris _lwp_cond_timedwait()
- // the acceptable max time threshold is smaller than for libthread on 2.5.1 and 2.6
- max_wait_period = 21000000;
+ // It appears that when we go directly through Solaris _lwp_cond_timedwait()
+ // the acceptable max time threshold is smaller than for libthread on 2.5.1 and 2.6
+ max_wait_period = 21000000;
} else {
max_wait_period = 50000000;
}
millis %= 1000;
if (seconds > max_wait_period) { // see man cond_timedwait(3T)
- seconds = max_wait_period;
+ seconds = max_wait_period;
}
abstime->tv_sec = now.tv_sec + seconds;
long usec = now.tv_usec + millis * 1000;
@@ -5453,34 +5476,34 @@
int v;
for (;;) {
- v = _Event;
- if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
+ v = _Event;
+ if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
}
guarantee(v >= 0, "invariant");
if (v == 0) {
- // Do this the hard way by blocking ...
- // See http://monaco.sfbay/detail.jsf?cr=5094058.
- // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking.
- // Only for SPARC >= V8PlusA
+ // Do this the hard way by blocking ...
+ // See http://monaco.sfbay/detail.jsf?cr=5094058.
+ // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking.
+ // Only for SPARC >= V8PlusA
#if defined(__sparc) && defined(COMPILER2)
- if (ClearFPUAtPark) { _mark_fpu_nosave(); }
+ if (ClearFPUAtPark) { _mark_fpu_nosave(); }
#endif
- int status = os::Solaris::mutex_lock(_mutex);
- assert_status(status == 0, status, "mutex_lock");
- guarantee(_nParked == 0, "invariant");
- ++_nParked;
- while (_Event < 0) {
- // for some reason, under 2.7 lwp_cond_wait() may return ETIME ...
- // Treat this the same as if the wait was interrupted
- // With usr/lib/lwp going to kernel, always handle ETIME
- status = os::Solaris::cond_wait(_cond, _mutex);
- if (status == ETIME) status = EINTR;
- assert_status(status == 0 || status == EINTR, status, "cond_wait");
- }
- --_nParked;
- _Event = 0;
- status = os::Solaris::mutex_unlock(_mutex);
- assert_status(status == 0, status, "mutex_unlock");
+ int status = os::Solaris::mutex_lock(_mutex);
+ assert_status(status == 0, status, "mutex_lock");
+ guarantee(_nParked == 0, "invariant");
+ ++_nParked;
+ while (_Event < 0) {
+ // for some reason, under 2.7 lwp_cond_wait() may return ETIME ...
+ // Treat this the same as if the wait was interrupted
+ // With usr/lib/lwp going to kernel, always handle ETIME
+ status = os::Solaris::cond_wait(_cond, _mutex);
+ if (status == ETIME) status = EINTR;
+ assert_status(status == 0 || status == EINTR, status, "cond_wait");
+ }
+ --_nParked;
+ _Event = 0;
+ status = os::Solaris::mutex_unlock(_mutex);
+ assert_status(status == 0, status, "mutex_unlock");
// Paranoia to ensure our locked and lock-free paths interact
// correctly with each other.
OrderAccess::fence();
@@ -5491,8 +5514,8 @@
guarantee(_nParked == 0, "invariant");
int v;
for (;;) {
- v = _Event;
- if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
+ v = _Event;
+ if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
}
guarantee(v >= 0, "invariant");
if (v != 0) return OS_OK;
@@ -5505,20 +5528,20 @@
// For Solaris SPARC set fprs.FEF=0 prior to parking.
// Only for SPARC >= V8PlusA
#if defined(__sparc) && defined(COMPILER2)
- if (ClearFPUAtPark) { _mark_fpu_nosave(); }
+ if (ClearFPUAtPark) { _mark_fpu_nosave(); }
#endif
int status = os::Solaris::mutex_lock(_mutex);
assert_status(status == 0, status, "mutex_lock");
guarantee(_nParked == 0, "invariant");
++_nParked;
while (_Event < 0) {
- int status = os::Solaris::cond_timedwait(_cond, _mutex, &abst);
- assert_status(status == 0 || status == EINTR ||
- status == ETIME || status == ETIMEDOUT,
- status, "cond_timedwait");
- if (!FilterSpuriousWakeups) break; // previous semantics
- if (status == ETIME || status == ETIMEDOUT) break;
- // We consume and ignore EINTR and spurious wakeups.
+ int status = os::Solaris::cond_timedwait(_cond, _mutex, &abst);
+ assert_status(status == 0 || status == EINTR ||
+ status == ETIME || status == ETIMEDOUT,
+ status, "cond_timedwait");
+ if (!FilterSpuriousWakeups) break; // previous semantics
+ if (status == ETIME || status == ETIMEDOUT) break;
+ // We consume and ignore EINTR and spurious wakeups.
}
--_nParked;
if (_Event >= 0) ret = OS_OK;
@@ -5567,36 +5590,34 @@
// JSR166
// -------------------------------------------------------
-/*
- * The solaris and linux implementations of park/unpark are fairly
- * conservative for now, but can be improved. They currently use a
- * mutex/condvar pair, plus _counter.
- * Park decrements _counter if > 0, else does a condvar wait. Unpark
- * sets count to 1 and signals condvar. Only one thread ever waits
- * on the condvar. Contention seen when trying to park implies that someone
- * is unparking you, so don't wait. And spurious returns are fine, so there
- * is no need to track notifications.
- */
+// The solaris and linux implementations of park/unpark are fairly
+// conservative for now, but can be improved. They currently use a
+// mutex/condvar pair, plus _counter.
+// Park decrements _counter if > 0, else does a condvar wait. Unpark
+// sets count to 1 and signals condvar. Only one thread ever waits
+// on the condvar. Contention seen when trying to park implies that someone
+// is unparking you, so don't wait. And spurious returns are fine, so there
+// is no need to track notifications.
#define MAX_SECS 100000000
-/*
- * This code is common to linux and solaris and will be moved to a
- * common place in dolphin.
- *
- * The passed in time value is either a relative time in nanoseconds
- * or an absolute time in milliseconds. Either way it has to be unpacked
- * into suitable seconds and nanoseconds components and stored in the
- * given timespec structure.
- * Given time is a 64-bit value and the time_t used in the timespec is only
- * a signed-32-bit value (except on 64-bit Linux) we have to watch for
- * overflow if times way in the future are given. Further on Solaris versions
- * prior to 10 there is a restriction (see cond_timedwait) that the specified
- * number of seconds, in abstime, is less than current_time + 100,000,000.
- * As it will be 28 years before "now + 100000000" will overflow we can
- * ignore overflow and just impose a hard-limit on seconds using the value
- * of "now + 100,000,000". This places a limit on the timeout of about 3.17
- * years from "now".
- */
+
+// This code is common to linux and solaris and will be moved to a
+// common place in dolphin.
+//
+// The passed in time value is either a relative time in nanoseconds
+// or an absolute time in milliseconds. Either way it has to be unpacked
+// into suitable seconds and nanoseconds components and stored in the
+// given timespec structure.
+// Given time is a 64-bit value and the time_t used in the timespec is only
+// a signed-32-bit value (except on 64-bit Linux) we have to watch for
+// overflow if times way in the future are given. Further on Solaris versions
+// prior to 10 there is a restriction (see cond_timedwait) that the specified
+// number of seconds, in abstime, is less than current_time + 100,000,000.
+// As it will be 28 years before "now + 100000000" will overflow we can
+// ignore overflow and just impose a hard-limit on seconds using the value
+// of "now + 100,000,000". This places a limit on the timeout of about 3.17
+// years from "now".
+//
static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) {
assert(time > 0, "convertTime");
@@ -5610,19 +5631,16 @@
jlong secs = time / 1000;
if (secs > max_secs) {
absTime->tv_sec = max_secs;
- }
- else {
+ } else {
absTime->tv_sec = secs;
}
absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC;
- }
- else {
+ } else {
jlong secs = time / NANOSECS_PER_SEC;
if (secs >= MAX_SECS) {
absTime->tv_sec = max_secs;
absTime->tv_nsec = 0;
- }
- else {
+ } else {
absTime->tv_sec = now.tv_sec + secs;
absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000;
if (absTime->tv_nsec >= NANOSECS_PER_SEC) {
@@ -5799,26 +5817,26 @@
// Wait for the child process to exit. This returns immediately if
// the child has already exited. */
while (waitpid(pid, &status, 0) < 0) {
- switch (errno) {
- case ECHILD: return 0;
- case EINTR: break;
- default: return -1;
- }
+ switch (errno) {
+ case ECHILD: return 0;
+ case EINTR: break;
+ default: return -1;
+ }
}
if (WIFEXITED(status)) {
- // The child exited normally; get its exit code.
- return WEXITSTATUS(status);
+ // The child exited normally; get its exit code.
+ return WEXITSTATUS(status);
} else if (WIFSIGNALED(status)) {
- // The child exited because of a signal
- // The best value to return is 0x80 + signal number,
- // because that is what all Unix shells do, and because
- // it allows callers to distinguish between process exit and
- // process death by signal.
- return 0x80 + WTERMSIG(status);
+ // The child exited because of a signal
+ // The best value to return is 0x80 + signal number,
+ // because that is what all Unix shells do, and because
+ // it allows callers to distinguish between process exit and
+ // process death by signal.
+ return 0x80 + WTERMSIG(status);
} else {
- // Unknown exit code; pass it through
- return status;
+ // Unknown exit code; pass it through
+ return status;
}
}
}
@@ -5832,43 +5850,49 @@
// as libawt.so, and renamed libawt_xawt.so
//
bool os::is_headless_jre() {
- struct stat statbuf;
- char buf[MAXPATHLEN];
- char libmawtpath[MAXPATHLEN];
- const char *xawtstr = "/xawt/libmawt.so";
- const char *new_xawtstr = "/libawt_xawt.so";
- char *p;
-
- // Get path to libjvm.so
- os::jvm_path(buf, sizeof(buf));
-
- // Get rid of libjvm.so
- p = strrchr(buf, '/');
- if (p == NULL) return false;
- else *p = '\0';
-
- // Get rid of client or server
- p = strrchr(buf, '/');
- if (p == NULL) return false;
- else *p = '\0';
-
- // check xawt/libmawt.so
- strcpy(libmawtpath, buf);
- strcat(libmawtpath, xawtstr);
- if (::stat(libmawtpath, &statbuf) == 0) return false;
-
- // check libawt_xawt.so
- strcpy(libmawtpath, buf);
- strcat(libmawtpath, new_xawtstr);
- if (::stat(libmawtpath, &statbuf) == 0) return false;
-
- return true;
+ struct stat statbuf;
+ char buf[MAXPATHLEN];
+ char libmawtpath[MAXPATHLEN];
+ const char *xawtstr = "/xawt/libmawt.so";
+ const char *new_xawtstr = "/libawt_xawt.so";
+ char *p;
+
+ // Get path to libjvm.so
+ os::jvm_path(buf, sizeof(buf));
+
+ // Get rid of libjvm.so
+ p = strrchr(buf, '/');
+ if (p == NULL) {
+ return false;
+ } else {
+ *p = '\0';
+ }
+
+ // Get rid of client or server
+ p = strrchr(buf, '/');
+ if (p == NULL) {
+ return false;
+ } else {
+ *p = '\0';
+ }
+
+ // check xawt/libmawt.so
+ strcpy(libmawtpath, buf);
+ strcat(libmawtpath, xawtstr);
+ if (::stat(libmawtpath, &statbuf) == 0) return false;
+
+ // check libawt_xawt.so
+ strcpy(libmawtpath, buf);
+ strcat(libmawtpath, new_xawtstr);
+ if (::stat(libmawtpath, &statbuf) == 0) return false;
+
+ return true;
}
size_t os::write(int fd, const void *buf, unsigned int nBytes) {
size_t res;
assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_native,
- "Assumed _thread_in_native");
+ "Assumed _thread_in_native");
RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
return res;
}
@@ -5883,13 +5907,13 @@
int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_native,
- "Assumed _thread_in_native");
+ "Assumed _thread_in_native");
RESTARTABLE_RETURN_INT((int)::recv(fd, buf, nBytes, flags));
}
int os::send(int fd, char* buf, size_t nBytes, uint flags) {
assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_native,
- "Assumed _thread_in_native");
+ "Assumed _thread_in_native");
RESTARTABLE_RETURN_INT((int)::send(fd, buf, nBytes, flags));
}
@@ -5912,7 +5936,7 @@
pfd.events = POLLIN;
assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_native,
- "Assumed _thread_in_native");
+ "Assumed _thread_in_native");
gettimeofday(&t, &aNull);
prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
@@ -5920,14 +5944,15 @@
for (;;) {
res = ::poll(&pfd, 1, timeout);
if (res == OS_ERR && errno == EINTR) {
- if (timeout != -1) {
- gettimeofday(&t, &aNull);
- newtime = ((julong)t.tv_sec * 1000) + t.tv_usec /1000;
- timeout -= newtime - prevtime;
- if (timeout <= 0)
- return OS_OK;
- prevtime = newtime;
+ if (timeout != -1) {
+ gettimeofday(&t, &aNull);
+ newtime = ((julong)t.tv_sec * 1000) + t.tv_usec /1000;
+ timeout -= newtime - prevtime;
+ if (timeout <= 0) {
+ return OS_OK;
}
+ prevtime = newtime;
+ }
} else return res;
}
}
@@ -5956,41 +5981,41 @@
//
// EISCONN The socket is already connected.
if (_result == OS_ERR && errno == EINTR) {
- /* restarting a connect() changes its errno semantics */
- RESTARTABLE(::connect(fd, him, len), _result);
- /* undo these changes */
- if (_result == OS_ERR) {
- if (errno == EALREADY) {
- errno = EINPROGRESS; /* fall through */
- } else if (errno == EISCONN) {
- errno = 0;
- return OS_OK;
- }
- }
- }
- return _result;
- }
+ // restarting a connect() changes its errno semantics
+ RESTARTABLE(::connect(fd, him, len), _result);
+ // undo these changes
+ if (_result == OS_ERR) {
+ if (errno == EALREADY) {
+ errno = EINPROGRESS; // fall through
+ } else if (errno == EISCONN) {
+ errno = 0;
+ return OS_OK;
+ }
+ }
+ }
+ return _result;
+}
int os::accept(int fd, struct sockaddr* him, socklen_t* len) {
if (fd < 0) {
return OS_ERR;
}
assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_native,
- "Assumed _thread_in_native");
+ "Assumed _thread_in_native");
RESTARTABLE_RETURN_INT((int)::accept(fd, him, len));
}
int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags,
sockaddr* from, socklen_t* fromlen) {
assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_native,
- "Assumed _thread_in_native");
+ "Assumed _thread_in_native");
RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen));
}
int os::sendto(int fd, char* buf, size_t len, uint flags,
struct sockaddr* to, socklen_t tolen) {
assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_native,
- "Assumed _thread_in_native");
+ "Assumed _thread_in_native");
RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen));
}
@@ -6007,8 +6032,8 @@
int os::bind(int fd, struct sockaddr* him, socklen_t len) {
assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_native,
- "Assumed _thread_in_native");
- return ::bind(fd, him, len);
+ "Assumed _thread_in_native");
+ return ::bind(fd, him, len);
}
// Get the default path to the core file
--- a/hotspot/src/os/solaris/vm/os_solaris.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/solaris/vm/os_solaris.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -36,10 +36,10 @@
private:
// Support for "new" libthread APIs for getting & setting thread context (2.8)
- #define TRS_VALID 0
- #define TRS_NONVOLATILE 1
- #define TRS_LWPID 2
- #define TRS_INVALID 3
+#define TRS_VALID 0
+#define TRS_NONVOLATILE 1
+#define TRS_LWPID 2
+#define TRS_INVALID 3
// initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization
static int_fnP_mutex_tP _mutex_lock;
@@ -61,8 +61,8 @@
typedef id_t lgrp_id_t;
typedef int lgrp_rsrc_t;
typedef enum lgrp_view {
- LGRP_VIEW_CALLER, /* what's available to the caller */
- LGRP_VIEW_OS /* what's available to operating system */
+ LGRP_VIEW_CALLER, // what's available to the caller
+ LGRP_VIEW_OS // what's available to operating system
} lgrp_view_t;
typedef uint_t (*getisax_func_t)(uint32_t* array, uint_t n);
@@ -74,8 +74,8 @@
typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent,
lgrp_id_t *lgrp_array, uint_t lgrp_array_size);
typedef int (*lgrp_resources_func_t)(lgrp_cookie_t cookie, lgrp_id_t lgrp,
- lgrp_id_t *lgrp_array, uint_t lgrp_array_size,
- lgrp_rsrc_t type);
+ lgrp_id_t *lgrp_array, uint_t lgrp_array_size,
+ lgrp_rsrc_t type);
typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie);
typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie);
typedef int (*meminfo_func_t)(const uint64_t inaddr[], int addr_count,
@@ -97,6 +97,8 @@
static meminfo_func_t _meminfo;
// Large Page Support
+ static bool is_valid_page_size(size_t bytes);
+ static size_t page_size_for_alignment(size_t alignment);
static bool setup_large_pages(caddr_t start, size_t bytes, size_t align);
static void init_thread_fpu_state(void);
@@ -128,7 +130,7 @@
static bool valid_stack_address(Thread* thread, address sp);
static bool valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect);
static ucontext_t* get_valid_uc_in_signal_handler(Thread* thread,
- ucontext_t* uc);
+ ucontext_t* uc);
static ExtendedPC ucontext_get_ExtendedPC(ucontext_t* uc);
static intptr_t* ucontext_get_sp(ucontext_t* uc);
@@ -143,7 +145,7 @@
// os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file
// provides extensions to the os class and not the Solaris class.
static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc,
- intptr_t** ret_sp, intptr_t** ret_fp);
+ intptr_t** ret_sp, intptr_t** ret_fp);
static void hotspot_sigmask(Thread* thread);
@@ -216,8 +218,7 @@
static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; }
static void set_mutex_scope(int scope) { _mutex_scope = scope; }
- static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst)
- { return _cond_timedwait(cv, mx, abst); }
+ static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst) { return _cond_timedwait(cv, mx, abst); }
static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); }
static int cond_signal(cond_t *cv) { return _cond_signal(cv); }
static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); }
@@ -225,8 +226,7 @@
static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); }
static int cond_scope() { return _cond_scope; }
- static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func)
- { _cond_timedwait = func; }
+ static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func) { _cond_timedwait = func; }
static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; }
static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; }
static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; }
@@ -247,9 +247,9 @@
static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; }
static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; }
static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; }
- static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; };
+ static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; }
static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent,
- lgrp_id_t *lgrp_array, uint_t lgrp_array_size) {
+ lgrp_id_t *lgrp_array, uint_t lgrp_array_size) {
return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1;
}
static int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp,
@@ -269,8 +269,8 @@
static void set_meminfo(meminfo_func_t func) { _meminfo = func; }
static int meminfo (const uint64_t inaddr[], int addr_count,
- const uint_t info_req[], int info_count,
- uint64_t outdata[], uint_t validity[]) {
+ const uint_t info_req[], int info_count,
+ uint64_t outdata[], uint_t validity[]) {
return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count,
outdata, validity) : -1;
}
@@ -300,57 +300,57 @@
};
class PlatformEvent : public CHeapObj<mtInternal> {
- private:
- double CachePad[4]; // increase odds that _mutex is sole occupant of cache line
- volatile int _Event;
- int _nParked;
- int _pipev[2];
- mutex_t _mutex[1];
- cond_t _cond[1];
- double PostPad[2];
+ private:
+ double CachePad[4]; // increase odds that _mutex is sole occupant of cache line
+ volatile int _Event;
+ int _nParked;
+ int _pipev[2];
+ mutex_t _mutex[1];
+ cond_t _cond[1];
+ double PostPad[2];
- protected:
- // Defining a protected ctor effectively gives us an abstract base class.
- // That is, a PlatformEvent can never be instantiated "naked" but only
- // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent).
- // TODO-FIXME: make dtor private
- ~PlatformEvent() { guarantee(0, "invariant"); }
- PlatformEvent() {
- int status;
- status = os::Solaris::cond_init(_cond);
- assert_status(status == 0, status, "cond_init");
- status = os::Solaris::mutex_init(_mutex);
- assert_status(status == 0, status, "mutex_init");
- _Event = 0;
- _nParked = 0;
- _pipev[0] = _pipev[1] = -1;
- }
+ protected:
+ // Defining a protected ctor effectively gives us an abstract base class.
+ // That is, a PlatformEvent can never be instantiated "naked" but only
+ // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent).
+ // TODO-FIXME: make dtor private
+ ~PlatformEvent() { guarantee(0, "invariant"); }
+ PlatformEvent() {
+ int status;
+ status = os::Solaris::cond_init(_cond);
+ assert_status(status == 0, status, "cond_init");
+ status = os::Solaris::mutex_init(_mutex);
+ assert_status(status == 0, status, "mutex_init");
+ _Event = 0;
+ _nParked = 0;
+ _pipev[0] = _pipev[1] = -1;
+ }
- public:
- // Exercise caution using reset() and fired() -- they may require MEMBARs
- void reset() { _Event = 0; }
- int fired() { return _Event; }
- void park();
- int park(jlong millis);
- void unpark();
+ public:
+ // Exercise caution using reset() and fired() -- they may require MEMBARs
+ void reset() { _Event = 0; }
+ int fired() { return _Event; }
+ void park();
+ int park(jlong millis);
+ void unpark();
};
class PlatformParker : public CHeapObj<mtInternal> {
- protected:
- mutex_t _mutex[1];
- cond_t _cond[1];
+ protected:
+ mutex_t _mutex[1];
+ cond_t _cond[1];
- public: // TODO-FIXME: make dtor private
- ~PlatformParker() { guarantee(0, "invariant"); }
+ public: // TODO-FIXME: make dtor private
+ ~PlatformParker() { guarantee(0, "invariant"); }
- public:
- PlatformParker() {
- int status;
- status = os::Solaris::cond_init(_cond);
- assert_status(status == 0, status, "cond_init");
- status = os::Solaris::mutex_init(_mutex);
- assert_status(status == 0, status, "mutex_init");
- }
+ public:
+ PlatformParker() {
+ int status;
+ status = os::Solaris::cond_init(_cond);
+ assert_status(status == 0, status, "cond_init");
+ status = os::Solaris::mutex_init(_mutex);
+ assert_status(status == 0, status, "mutex_init");
+ }
};
#endif // OS_SOLARIS_VM_OS_SOLARIS_HPP
--- a/hotspot/src/os/solaris/vm/os_solaris.inline.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/solaris/vm/os_solaris.inline.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -157,4 +157,8 @@
return true;
}
+inline void os::exit(int num) {
+ ::exit(num);
+}
+
#endif // OS_SOLARIS_VM_OS_SOLARIS_INLINE_HPP
--- a/hotspot/src/os/windows/vm/os_windows.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/windows/vm/os_windows.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -22,8 +22,8 @@
*
*/
-// Must be at least Windows 2000 or XP to use IsDebuggerPresent
-#define _WIN32_WINNT 0x500
+// Must be at least Windows Vista or Server 2008 to use InitOnceExecuteOnce
+#define _WIN32_WINNT 0x0600
// no precompiled headers
#include "classfile/classLoader.hpp"
@@ -92,7 +92,7 @@
#include <io.h>
#include <process.h> // For _beginthreadex(), _endthreadex()
#include <imagehlp.h> // For os::dll_address_to_function_name
-/* for enumerating dll libraries */
+// for enumerating dll libraries
#include <vdmdbg.h>
// for timer info max values which include all bits
@@ -113,11 +113,11 @@
static FILETIME process_kernel_time;
#ifdef _M_IA64
-#define __CPU__ ia64
+ #define __CPU__ ia64
#elif _M_AMD64
-#define __CPU__ amd64
+ #define __CPU__ amd64
#else
-#define __CPU__ i486
+ #define __CPU__ i486
#endif
// save DLL module handle, used by GetModuleFileName
@@ -126,18 +126,19 @@
BOOL WINAPI DllMain(HINSTANCE hinst, DWORD reason, LPVOID reserved) {
switch (reason) {
- case DLL_PROCESS_ATTACH:
- vm_lib_handle = hinst;
- if (ForceTimeHighResolution)
- timeBeginPeriod(1L);
- break;
- case DLL_PROCESS_DETACH:
- if (ForceTimeHighResolution)
- timeEndPeriod(1L);
-
- break;
- default:
- break;
+ case DLL_PROCESS_ATTACH:
+ vm_lib_handle = hinst;
+ if (ForceTimeHighResolution) {
+ timeBeginPeriod(1L);
+ }
+ break;
+ case DLL_PROCESS_DETACH:
+ if (ForceTimeHighResolution) {
+ timeEndPeriod(1L);
+ }
+ break;
+ default:
+ break;
}
return true;
}
@@ -153,8 +154,8 @@
// Implementation of os
bool os::getenv(const char* name, char* buffer, int len) {
- int result = GetEnvironmentVariable(name, buffer, len);
- return result > 0 && result < len;
+ int result = GetEnvironmentVariable(name, buffer, len);
+ return result > 0 && result < len;
}
bool os::unsetenv(const char* name) {
@@ -179,67 +180,72 @@
static LPTOP_LEVEL_EXCEPTION_FILTER prev_uef_handler = NULL;
LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo);
+
void os::init_system_properties_values() {
- /* sysclasspath, java_home, dll_dir */
+ // sysclasspath, java_home, dll_dir
{
- char *home_path;
- char *dll_path;
- char *pslash;
- char *bin = "\\bin";
- char home_dir[MAX_PATH];
-
- if (!getenv("_ALT_JAVA_HOME_DIR", home_dir, MAX_PATH)) {
- os::jvm_path(home_dir, sizeof(home_dir));
- // Found the full path to jvm.dll.
- // Now cut the path to <java_home>/jre if we can.
- *(strrchr(home_dir, '\\')) = '\0'; /* get rid of \jvm.dll */
- pslash = strrchr(home_dir, '\\');
- if (pslash != NULL) {
- *pslash = '\0'; /* get rid of \{client|server} */
- pslash = strrchr(home_dir, '\\');
- if (pslash != NULL)
- *pslash = '\0'; /* get rid of \bin */
- }
+ char *home_path;
+ char *dll_path;
+ char *pslash;
+ char *bin = "\\bin";
+ char home_dir[MAX_PATH];
+
+ if (!getenv("_ALT_JAVA_HOME_DIR", home_dir, MAX_PATH)) {
+ os::jvm_path(home_dir, sizeof(home_dir));
+ // Found the full path to jvm.dll.
+ // Now cut the path to <java_home>/jre if we can.
+ *(strrchr(home_dir, '\\')) = '\0'; // get rid of \jvm.dll
+ pslash = strrchr(home_dir, '\\');
+ if (pslash != NULL) {
+ *pslash = '\0'; // get rid of \{client|server}
+ pslash = strrchr(home_dir, '\\');
+ if (pslash != NULL) {
+ *pslash = '\0'; // get rid of \bin
+ }
}
-
- home_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + 1, mtInternal);
- if (home_path == NULL)
- return;
- strcpy(home_path, home_dir);
- Arguments::set_java_home(home_path);
-
- dll_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + strlen(bin) + 1, mtInternal);
- if (dll_path == NULL)
- return;
- strcpy(dll_path, home_dir);
- strcat(dll_path, bin);
- Arguments::set_dll_dir(dll_path);
-
- if (!set_boot_path('\\', ';'))
- return;
- }
-
- /* library_path */
- #define EXT_DIR "\\lib\\ext"
- #define BIN_DIR "\\bin"
- #define PACKAGE_DIR "\\Sun\\Java"
+ }
+
+ home_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + 1, mtInternal);
+ if (home_path == NULL) {
+ return;
+ }
+ strcpy(home_path, home_dir);
+ Arguments::set_java_home(home_path);
+
+ dll_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + strlen(bin) + 1,
+ mtInternal);
+ if (dll_path == NULL) {
+ return;
+ }
+ strcpy(dll_path, home_dir);
+ strcat(dll_path, bin);
+ Arguments::set_dll_dir(dll_path);
+
+ if (!set_boot_path('\\', ';')) {
+ return;
+ }
+ }
+
+// library_path
+#define EXT_DIR "\\lib\\ext"
+#define BIN_DIR "\\bin"
+#define PACKAGE_DIR "\\Sun\\Java"
{
- /* Win32 library search order (See the documentation for LoadLibrary):
- *
- * 1. The directory from which application is loaded.
- * 2. The system wide Java Extensions directory (Java only)
- * 3. System directory (GetSystemDirectory)
- * 4. Windows directory (GetWindowsDirectory)
- * 5. The PATH environment variable
- * 6. The current directory
- */
+ // Win32 library search order (See the documentation for LoadLibrary):
+ //
+ // 1. The directory from which application is loaded.
+ // 2. The system wide Java Extensions directory (Java only)
+ // 3. System directory (GetSystemDirectory)
+ // 4. Windows directory (GetWindowsDirectory)
+ // 5. The PATH environment variable
+ // 6. The current directory
char *library_path;
char tmp[MAX_PATH];
char *path_str = ::getenv("PATH");
library_path = NEW_C_HEAP_ARRAY(char, MAX_PATH * 5 + sizeof(PACKAGE_DIR) +
- sizeof(BIN_DIR) + (path_str ? strlen(path_str) : 0) + 10, mtInternal);
+ sizeof(BIN_DIR) + (path_str ? strlen(path_str) : 0) + 10, mtInternal);
library_path[0] = '\0';
@@ -261,8 +267,8 @@
strcat(library_path, tmp);
if (path_str) {
- strcat(library_path, ";");
- strcat(library_path, path_str);
+ strcat(library_path, ";");
+ strcat(library_path, path_str);
}
strcat(library_path, ";.");
@@ -271,27 +277,27 @@
FREE_C_HEAP_ARRAY(char, library_path, mtInternal);
}
- /* Default extensions directory */
+ // Default extensions directory
{
char path[MAX_PATH];
char buf[2 * MAX_PATH + 2 * sizeof(EXT_DIR) + sizeof(PACKAGE_DIR) + 1];
GetWindowsDirectory(path, MAX_PATH);
sprintf(buf, "%s%s;%s%s%s", Arguments::get_java_home(), EXT_DIR,
- path, PACKAGE_DIR, EXT_DIR);
+ path, PACKAGE_DIR, EXT_DIR);
Arguments::set_ext_dirs(buf);
}
#undef EXT_DIR
#undef BIN_DIR
#undef PACKAGE_DIR
- /* Default endorsed standards directory. */
+ // Default endorsed standards directory.
{
- #define ENDORSED_DIR "\\lib\\endorsed"
+#define ENDORSED_DIR "\\lib\\endorsed"
size_t len = strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR);
char * buf = NEW_C_HEAP_ARRAY(char, len, mtInternal);
sprintf(buf, "%s%s", Arguments::get_java_home(), ENDORSED_DIR);
Arguments::set_endorsed_dirs(buf);
- #undef ENDORSED_DIR
+#undef ENDORSED_DIR
}
#ifndef _WIN64
@@ -312,17 +318,16 @@
os::breakpoint();
}
-/*
- * RtlCaptureStackBackTrace Windows API may not exist prior to Windows XP.
- * So far, this method is only used by Native Memory Tracking, which is
- * only supported on Windows XP or later.
- */
+// RtlCaptureStackBackTrace Windows API may not exist prior to Windows XP.
+// So far, this method is only used by Native Memory Tracking, which is
+// only supported on Windows XP or later.
+//
int os::get_native_stack(address* stack, int frames, int toSkip) {
#ifdef _NMT_NOINLINE_
- toSkip ++;
+ toSkip++;
#endif
int captured = Kernel32Dll::RtlCaptureStackBackTrace(toSkip + 1, frames,
- (PVOID*)stack, NULL);
+ (PVOID*)stack, NULL);
for (int index = captured; index < frames; index ++) {
stack[index] = NULL;
}
@@ -347,13 +352,13 @@
// Add up the sizes of all the regions with the same
// AllocationBase.
- while (1)
- {
+ while (1) {
VirtualQuery(stack_bottom+stack_size, &minfo, sizeof(minfo));
- if (stack_bottom == (address)minfo.AllocationBase)
+ if (stack_bottom == (address)minfo.AllocationBase) {
stack_size += minfo.RegionSize;
- else
+ } else {
break;
+ }
}
#ifdef _M_IA64
@@ -409,8 +414,6 @@
LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo);
-extern jint volatile vm_getting_terminated;
-
// Thread start routine for all new Java threads
static unsigned __stdcall java_start(Thread* thread) {
// Try to randomize the cache line index of hot stack frames.
@@ -432,23 +435,20 @@
}
}
- // Diagnostic code to investigate JDK-6573254 (Part I)
- unsigned res = 90115; // non-java thread
+ // Diagnostic code to investigate JDK-6573254
+ int res = 90115; // non-java thread
if (thread->is_Java_thread()) {
- JavaThread* java_thread = (JavaThread*)thread;
- res = java_lang_Thread::is_daemon(java_thread->threadObj())
- ? 70115 // java daemon thread
- : 80115; // java non-daemon thread
+ res = 60115; // java thread
}
// Install a win32 structured exception handler around every thread created
// by VM, so VM can generate error dump when an exception occurred in non-
// Java thread (e.g. VM thread).
__try {
- thread->run();
+ thread->run();
} __except(topLevelExceptionFilter(
- (_EXCEPTION_POINTERS*)_exception_info())) {
- // Nothing to do.
+ (_EXCEPTION_POINTERS*)_exception_info())) {
+ // Nothing to do.
}
// One less thread is executing
@@ -458,15 +458,13 @@
Atomic::dec_ptr((intptr_t*)&os::win32::_os_thread_count);
}
- // Diagnostic code to investigate JDK-6573254 (Part II)
- if (OrderAccess::load_acquire(&vm_getting_terminated)) {
- return res;
- }
-
- return 0;
-}
-
-static OSThread* create_os_thread(Thread* thread, HANDLE thread_handle, int thread_id) {
+ // Thread must not return from exit_process_or_thread(), but if it does,
+ // let it proceed to exit normally
+ return (unsigned)os::win32::exit_process_or_thread(os::win32::EPT_THREAD, res);
+}
+
+static OSThread* create_os_thread(Thread* thread, HANDLE thread_handle,
+ int thread_id) {
// Allocate the OSThread object
OSThread* osthread = new OSThread(NULL, NULL);
if (osthread == NULL) return NULL;
@@ -509,7 +507,7 @@
OSThread* osthread = create_os_thread(thread, thread_h,
(int)current_thread_id());
if (osthread == NULL) {
- return false;
+ return false;
}
// Initial thread state is RUNNABLE
@@ -525,9 +523,9 @@
#endif
if (_starting_thread == NULL) {
_starting_thread = create_os_thread(thread, main_thread, main_thread_id);
- if (_starting_thread == NULL) {
- return false;
- }
+ if (_starting_thread == NULL) {
+ return false;
+ }
}
// The primordial thread is runnable from the start)
@@ -538,7 +536,8 @@
}
// Allocate and initialize a new OSThread
-bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) {
+bool os::create_thread(Thread* thread, ThreadType thr_type,
+ size_t stack_size) {
unsigned thread_id;
// Allocate the OSThread object
@@ -562,8 +561,9 @@
switch (thr_type) {
case os::java_thread:
// Java threads use ThreadStackSize which default value can be changed with the flag -Xss
- if (JavaThread::stack_size_at_create() > 0)
+ if (JavaThread::stack_size_at_create() > 0) {
stack_size = JavaThread::stack_size_at_create();
+ }
break;
case os::compiler_thread:
if (CompilerThreadStackSize > 0) {
@@ -602,7 +602,7 @@
// flag appears to work with _beginthredex() as well.
#ifndef STACK_SIZE_PARAM_IS_A_RESERVATION
-#define STACK_SIZE_PARAM_IS_A_RESERVATION (0x10000)
+ #define STACK_SIZE_PARAM_IS_A_RESERVATION (0x10000)
#endif
HANDLE thread_handle =
@@ -616,12 +616,12 @@
// perhaps STACK_SIZE_PARAM_IS_A_RESERVATION is not supported, try again
// without the flag.
thread_handle =
- (HANDLE)_beginthreadex(NULL,
- (unsigned)stack_size,
- (unsigned (__stdcall *)(void*)) java_start,
- thread,
- CREATE_SUSPENDED,
- &thread_id);
+ (HANDLE)_beginthreadex(NULL,
+ (unsigned)stack_size,
+ (unsigned (__stdcall *)(void*)) java_start,
+ thread,
+ CREATE_SUSPENDED,
+ &thread_id);
}
if (thread_handle == NULL) {
// Need to clean up stuff we've allocated so far
@@ -683,8 +683,8 @@
if (win32::_has_performance_count) {
return performance_frequency;
} else {
- // the FILETIME time is the number of 100-nanosecond intervals since January 1,1601.
- return 10000000;
+ // the FILETIME time is the number of 100-nanosecond intervals since January 1,1601.
+ return 10000000;
}
}
@@ -916,15 +916,15 @@
}
bool os::getTimesSecs(double* process_real_time,
- double* process_user_time,
- double* process_system_time) {
+ double* process_user_time,
+ double* process_system_time) {
HANDLE h_process = GetCurrentProcess();
FILETIME create_time, exit_time, kernel_time, user_time;
BOOL result = GetProcessTimes(h_process,
- &create_time,
- &exit_time,
- &kernel_time,
- &user_time);
+ &create_time,
+ &exit_time,
+ &kernel_time,
+ &user_time);
if (result != 0) {
FILETIME wt;
GetSystemTimeAsFileTime(&wt);
@@ -941,7 +941,6 @@
}
void os::shutdown() {
-
// allow PerfMemory to attempt cleanup of any persistent resources
perfMemory_exit();
@@ -956,8 +955,10 @@
}
-static BOOL (WINAPI *_MiniDumpWriteDump) ( HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, PMINIDUMP_EXCEPTION_INFORMATION,
- PMINIDUMP_USER_STREAM_INFORMATION, PMINIDUMP_CALLBACK_INFORMATION);
+static BOOL (WINAPI *_MiniDumpWriteDump)(HANDLE, DWORD, HANDLE, MINIDUMP_TYPE,
+ PMINIDUMP_EXCEPTION_INFORMATION,
+ PMINIDUMP_USER_STREAM_INFORMATION,
+ PMINIDUMP_CALLBACK_INFORMATION);
void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) {
HINSTANCE dbghelp;
@@ -996,10 +997,13 @@
return;
}
- _MiniDumpWriteDump = CAST_TO_FN_PTR(
- BOOL(WINAPI *)( HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, PMINIDUMP_EXCEPTION_INFORMATION,
- PMINIDUMP_USER_STREAM_INFORMATION, PMINIDUMP_CALLBACK_INFORMATION),
- GetProcAddress(dbghelp, "MiniDumpWriteDump"));
+ _MiniDumpWriteDump =
+ CAST_TO_FN_PTR(BOOL(WINAPI *)(HANDLE, DWORD, HANDLE, MINIDUMP_TYPE,
+ PMINIDUMP_EXCEPTION_INFORMATION,
+ PMINIDUMP_USER_STREAM_INFORMATION,
+ PMINIDUMP_CALLBACK_INFORMATION),
+ GetProcAddress(dbghelp,
+ "MiniDumpWriteDump"));
if (_MiniDumpWriteDump == NULL) {
VMError::report_coredump_status("Failed to find MiniDumpWriteDump() in module dbghelp.dll", false);
@@ -1012,7 +1016,7 @@
// API_VERSION_NUMBER 11 or higher contains the ones we want though
#if API_VERSION_NUMBER >= 11
dumpType = (MINIDUMP_TYPE)(dumpType | MiniDumpWithFullMemoryInfo | MiniDumpWithThreadInfo |
- MiniDumpWithUnloadedModules);
+ MiniDumpWithUnloadedModules);
#endif
cwd = get_current_directory(NULL, 0);
@@ -1039,21 +1043,21 @@
// the dump types we really want. If first call fails, lets fall back to just use MiniDumpWithFullMemory then.
if (_MiniDumpWriteDump(hProcess, processId, dumpFile, dumpType, pmei, NULL, NULL) == false &&
_MiniDumpWriteDump(hProcess, processId, dumpFile, (MINIDUMP_TYPE)MiniDumpWithFullMemory, pmei, NULL, NULL) == false) {
- DWORD error = GetLastError();
- LPTSTR msgbuf = NULL;
-
- if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+ DWORD error = GetLastError();
+ LPTSTR msgbuf = NULL;
+
+ if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, error, 0, (LPTSTR)&msgbuf, 0, NULL) != 0) {
- jio_snprintf(buffer, bufferSize, "Call to MiniDumpWriteDump() failed (Error 0x%x: %s)", error, msgbuf);
- LocalFree(msgbuf);
- } else {
- // Call to FormatMessage failed, just include the result from GetLastError
- jio_snprintf(buffer, bufferSize, "Call to MiniDumpWriteDump() failed (Error 0x%x)", error);
- }
- VMError::report_coredump_status(buffer, false);
+ jio_snprintf(buffer, bufferSize, "Call to MiniDumpWriteDump() failed (Error 0x%x: %s)", error, msgbuf);
+ LocalFree(msgbuf);
+ } else {
+ // Call to FormatMessage failed, just include the result from GetLastError
+ jio_snprintf(buffer, bufferSize, "Call to MiniDumpWriteDump() failed (Error 0x%x)", error);
+ }
+ VMError::report_coredump_status(buffer, false);
} else {
VMError::report_coredump_status(buffer, true);
}
@@ -1062,17 +1066,15 @@
}
-
-void os::abort(bool dump_core)
-{
+void os::abort(bool dump_core) {
os::shutdown();
// no core dump on Windows
- ::exit(1);
+ win32::exit_process_or_thread(win32::EPT_PROCESS, 1);
}
// Die immediately, no exit hook, no abort hook, no cleanup.
void os::die() {
- _exit(-1);
+ win32::exit_process_or_thread(win32::EPT_PROCESS_DIE, -1);
}
// Directory routines copied from src/win32/native/java/io/dirent_md.c
@@ -1080,126 +1082,118 @@
//
// The declarations for DIR and struct dirent are in jvm_win32.h.
-/* Caller must have already run dirname through JVM_NativePath, which removes
- duplicate slashes and converts all instances of '/' into '\\'. */
-
-DIR *
-os::opendir(const char *dirname)
-{
- assert(dirname != NULL, "just checking"); // hotspot change
- DIR *dirp = (DIR *)malloc(sizeof(DIR), mtInternal);
- DWORD fattr; // hotspot change
- char alt_dirname[4] = { 0, 0, 0, 0 };
-
- if (dirp == 0) {
- errno = ENOMEM;
- return 0;
- }
-
- /*
- * Win32 accepts "\" in its POSIX stat(), but refuses to treat it
- * as a directory in FindFirstFile(). We detect this case here and
- * prepend the current drive name.
- */
- if (dirname[1] == '\0' && dirname[0] == '\\') {
- alt_dirname[0] = _getdrive() + 'A' - 1;
- alt_dirname[1] = ':';
- alt_dirname[2] = '\\';
- alt_dirname[3] = '\0';
- dirname = alt_dirname;
- }
-
- dirp->path = (char *)malloc(strlen(dirname) + 5, mtInternal);
- if (dirp->path == 0) {
- free(dirp, mtInternal);
- errno = ENOMEM;
- return 0;
- }
- strcpy(dirp->path, dirname);
-
- fattr = GetFileAttributes(dirp->path);
- if (fattr == 0xffffffff) {
- free(dirp->path, mtInternal);
- free(dirp, mtInternal);
- errno = ENOENT;
- return 0;
- } else if ((fattr & FILE_ATTRIBUTE_DIRECTORY) == 0) {
- free(dirp->path, mtInternal);
- free(dirp, mtInternal);
- errno = ENOTDIR;
- return 0;
- }
-
- /* Append "*.*", or possibly "\\*.*", to path */
- if (dirp->path[1] == ':'
- && (dirp->path[2] == '\0'
- || (dirp->path[2] == '\\' && dirp->path[3] == '\0'))) {
- /* No '\\' needed for cases like "Z:" or "Z:\" */
- strcat(dirp->path, "*.*");
- } else {
- strcat(dirp->path, "\\*.*");
- }
-
- dirp->handle = FindFirstFile(dirp->path, &dirp->find_data);
- if (dirp->handle == INVALID_HANDLE_VALUE) {
- if (GetLastError() != ERROR_FILE_NOT_FOUND) {
- free(dirp->path, mtInternal);
- free(dirp, mtInternal);
- errno = EACCES;
- return 0;
- }
- }
- return dirp;
-}
-
-/* parameter dbuf unused on Windows */
-
-struct dirent *
-os::readdir(DIR *dirp, dirent *dbuf)
-{
- assert(dirp != NULL, "just checking"); // hotspot change
- if (dirp->handle == INVALID_HANDLE_VALUE) {
- return 0;
- }
-
- strcpy(dirp->dirent.d_name, dirp->find_data.cFileName);
-
- if (!FindNextFile(dirp->handle, &dirp->find_data)) {
- if (GetLastError() == ERROR_INVALID_HANDLE) {
- errno = EBADF;
- return 0;
- }
- FindClose(dirp->handle);
- dirp->handle = INVALID_HANDLE_VALUE;
- }
-
- return &dirp->dirent;
-}
-
-int
-os::closedir(DIR *dirp)
-{
- assert(dirp != NULL, "just checking"); // hotspot change
- if (dirp->handle != INVALID_HANDLE_VALUE) {
- if (!FindClose(dirp->handle)) {
- errno = EBADF;
- return -1;
- }
- dirp->handle = INVALID_HANDLE_VALUE;
- }
+// Caller must have already run dirname through JVM_NativePath, which removes
+// duplicate slashes and converts all instances of '/' into '\\'.
+
+DIR * os::opendir(const char *dirname) {
+ assert(dirname != NULL, "just checking"); // hotspot change
+ DIR *dirp = (DIR *)malloc(sizeof(DIR), mtInternal);
+ DWORD fattr; // hotspot change
+ char alt_dirname[4] = { 0, 0, 0, 0 };
+
+ if (dirp == 0) {
+ errno = ENOMEM;
+ return 0;
+ }
+
+ // Win32 accepts "\" in its POSIX stat(), but refuses to treat it
+ // as a directory in FindFirstFile(). We detect this case here and
+ // prepend the current drive name.
+ //
+ if (dirname[1] == '\0' && dirname[0] == '\\') {
+ alt_dirname[0] = _getdrive() + 'A' - 1;
+ alt_dirname[1] = ':';
+ alt_dirname[2] = '\\';
+ alt_dirname[3] = '\0';
+ dirname = alt_dirname;
+ }
+
+ dirp->path = (char *)malloc(strlen(dirname) + 5, mtInternal);
+ if (dirp->path == 0) {
+ free(dirp, mtInternal);
+ errno = ENOMEM;
+ return 0;
+ }
+ strcpy(dirp->path, dirname);
+
+ fattr = GetFileAttributes(dirp->path);
+ if (fattr == 0xffffffff) {
+ free(dirp->path, mtInternal);
+ free(dirp, mtInternal);
+ errno = ENOENT;
+ return 0;
+ } else if ((fattr & FILE_ATTRIBUTE_DIRECTORY) == 0) {
free(dirp->path, mtInternal);
free(dirp, mtInternal);
+ errno = ENOTDIR;
return 0;
+ }
+
+ // Append "*.*", or possibly "\\*.*", to path
+ if (dirp->path[1] == ':' &&
+ (dirp->path[2] == '\0' ||
+ (dirp->path[2] == '\\' && dirp->path[3] == '\0'))) {
+ // No '\\' needed for cases like "Z:" or "Z:\"
+ strcat(dirp->path, "*.*");
+ } else {
+ strcat(dirp->path, "\\*.*");
+ }
+
+ dirp->handle = FindFirstFile(dirp->path, &dirp->find_data);
+ if (dirp->handle == INVALID_HANDLE_VALUE) {
+ if (GetLastError() != ERROR_FILE_NOT_FOUND) {
+ free(dirp->path, mtInternal);
+ free(dirp, mtInternal);
+ errno = EACCES;
+ return 0;
+ }
+ }
+ return dirp;
+}
+
+// parameter dbuf unused on Windows
+struct dirent * os::readdir(DIR *dirp, dirent *dbuf) {
+ assert(dirp != NULL, "just checking"); // hotspot change
+ if (dirp->handle == INVALID_HANDLE_VALUE) {
+ return 0;
+ }
+
+ strcpy(dirp->dirent.d_name, dirp->find_data.cFileName);
+
+ if (!FindNextFile(dirp->handle, &dirp->find_data)) {
+ if (GetLastError() == ERROR_INVALID_HANDLE) {
+ errno = EBADF;
+ return 0;
+ }
+ FindClose(dirp->handle);
+ dirp->handle = INVALID_HANDLE_VALUE;
+ }
+
+ return &dirp->dirent;
+}
+
+int os::closedir(DIR *dirp) {
+ assert(dirp != NULL, "just checking"); // hotspot change
+ if (dirp->handle != INVALID_HANDLE_VALUE) {
+ if (!FindClose(dirp->handle)) {
+ errno = EBADF;
+ return -1;
+ }
+ dirp->handle = INVALID_HANDLE_VALUE;
+ }
+ free(dirp->path, mtInternal);
+ free(dirp, mtInternal);
+ return 0;
}
// This must be hard coded because it's the system's temporary
// directory not the java application's temp directory, ala java.io.tmpdir.
const char* os::get_temp_directory() {
static char path_buf[MAX_PATH];
- if (GetTempPath(MAX_PATH, path_buf)>0)
+ if (GetTempPath(MAX_PATH, path_buf) > 0) {
return path_buf;
- else{
- path_buf[0]='\0';
+ } else {
+ path_buf[0] = '\0';
return path_buf;
}
}
@@ -1282,47 +1276,48 @@
// Helper routine which returns true if address in
// within the NTDLL address space.
//
-static bool _addr_in_ntdll( address addr )
-{
+static bool _addr_in_ntdll(address addr) {
HMODULE hmod;
MODULEINFO minfo;
hmod = GetModuleHandle("NTDLL.DLL");
if (hmod == NULL) return false;
- if (!os::PSApiDll::GetModuleInformation( GetCurrentProcess(), hmod,
- &minfo, sizeof(MODULEINFO)) )
+ if (!os::PSApiDll::GetModuleInformation(GetCurrentProcess(), hmod,
+ &minfo, sizeof(MODULEINFO))) {
return false;
+ }
if ((addr >= minfo.lpBaseOfDll) &&
- (addr < (address)((uintptr_t)minfo.lpBaseOfDll + (uintptr_t)minfo.SizeOfImage)))
+ (addr < (address)((uintptr_t)minfo.lpBaseOfDll + (uintptr_t)minfo.SizeOfImage))) {
return true;
- else
+ } else {
return false;
+ }
}
#endif
struct _modinfo {
- address addr;
- char* full_path; // point to a char buffer
- int buflen; // size of the buffer
- address base_addr;
+ address addr;
+ char* full_path; // point to a char buffer
+ int buflen; // size of the buffer
+ address base_addr;
};
static int _locate_module_by_addr(const char * mod_fname, address base_addr,
address top_address, void * param) {
- struct _modinfo *pmod = (struct _modinfo *)param;
- if (!pmod) return -1;
-
- if (base_addr <= pmod->addr &&
- top_address > pmod->addr) {
- // if a buffer is provided, copy path name to the buffer
- if (pmod->full_path) {
- jio_snprintf(pmod->full_path, pmod->buflen, "%s", mod_fname);
- }
- pmod->base_addr = base_addr;
- return 1;
- }
- return 0;
+ struct _modinfo *pmod = (struct _modinfo *)param;
+ if (!pmod) return -1;
+
+ if (base_addr <= pmod->addr &&
+ top_address > pmod->addr) {
+ // if a buffer is provided, copy path name to the buffer
+ if (pmod->full_path) {
+ jio_snprintf(pmod->full_path, pmod->buflen, "%s", mod_fname);
+ }
+ pmod->base_addr = base_addr;
+ return 1;
+ }
+ return 0;
}
bool os::dll_address_to_library_name(address addr, char* buf,
@@ -1365,16 +1360,16 @@
// save the start and end address of jvm.dll into param[0] and param[1]
static int _locate_jvm_dll(const char* mod_fname, address base_addr,
- address top_address, void * param) {
- if (!param) return -1;
-
- if (base_addr <= (address)_locate_jvm_dll &&
- top_address > (address)_locate_jvm_dll) {
- ((address*)param)[0] = base_addr;
- ((address*)param)[1] = top_address;
- return 1;
- }
- return 0;
+ address top_address, void * param) {
+ if (!param) return -1;
+
+ if (base_addr <= (address)_locate_jvm_dll &&
+ top_address > (address)_locate_jvm_dll) {
+ ((address*)param)[0] = base_addr;
+ ((address*)param)[1] = top_address;
+ return 1;
+ }
+ return 0;
}
address vm_lib_location[2]; // start and end address of jvm.dll
@@ -1394,29 +1389,27 @@
// print module info; param is outputStream*
static int _print_module(const char* fname, address base_address,
address top_address, void* param) {
- if (!param) return -1;
-
- outputStream* st = (outputStream*)param;
-
- st->print(PTR_FORMAT " - " PTR_FORMAT " \t%s\n", base_address, top_address, fname);
- return 0;
+ if (!param) return -1;
+
+ outputStream* st = (outputStream*)param;
+
+ st->print(PTR_FORMAT " - " PTR_FORMAT " \t%s\n", base_address, top_address, fname);
+ return 0;
}
// Loads .dll/.so and
// in case of error it checks if .dll/.so was built for the
// same architecture as Hotspot is running on
-void * os::dll_load(const char *name, char *ebuf, int ebuflen)
-{
+void * os::dll_load(const char *name, char *ebuf, int ebuflen) {
void * result = LoadLibrary(name);
- if (result != NULL)
- {
+ if (result != NULL) {
return result;
}
DWORD errcode = GetLastError();
if (errcode == ERROR_MOD_NOT_FOUND) {
- strncpy(ebuf, "Can't find dependent libraries", ebuflen-1);
- ebuf[ebuflen-1]='\0';
+ strncpy(ebuf, "Can't find dependent libraries", ebuflen - 1);
+ ebuf[ebuflen - 1] = '\0';
return NULL;
}
@@ -1429,107 +1422,99 @@
// Read system error message into ebuf
// It may or may not be overwritten below (in the for loop and just above)
lasterror(ebuf, (size_t) ebuflen);
- ebuf[ebuflen-1]='\0';
- int file_descriptor=::open(name, O_RDONLY | O_BINARY, 0);
- if (file_descriptor<0)
- {
+ ebuf[ebuflen - 1] = '\0';
+ int fd = ::open(name, O_RDONLY | O_BINARY, 0);
+ if (fd < 0) {
return NULL;
}
uint32_t signature_offset;
- uint16_t lib_arch=0;
- bool failed_to_get_lib_arch=
- (
- //Go to position 3c in the dll
- (os::seek_to_file_offset(file_descriptor,IMAGE_FILE_PTR_TO_SIGNATURE)<0)
- ||
- // Read loacation of signature
- (sizeof(signature_offset)!=
- (os::read(file_descriptor, (void*)&signature_offset,sizeof(signature_offset))))
- ||
- //Go to COFF File Header in dll
- //that is located after"signature" (4 bytes long)
- (os::seek_to_file_offset(file_descriptor,
- signature_offset+IMAGE_FILE_SIGNATURE_LENGTH)<0)
- ||
- //Read field that contains code of architecture
- // that dll was build for
- (sizeof(lib_arch)!=
- (os::read(file_descriptor, (void*)&lib_arch,sizeof(lib_arch))))
- );
-
- ::close(file_descriptor);
- if (failed_to_get_lib_arch)
- {
+ uint16_t lib_arch = 0;
+ bool failed_to_get_lib_arch =
+ ( // Go to position 3c in the dll
+ (os::seek_to_file_offset(fd, IMAGE_FILE_PTR_TO_SIGNATURE) < 0)
+ ||
+ // Read location of signature
+ (sizeof(signature_offset) !=
+ (os::read(fd, (void*)&signature_offset, sizeof(signature_offset))))
+ ||
+ // Go to COFF File Header in dll
+ // that is located after "signature" (4 bytes long)
+ (os::seek_to_file_offset(fd,
+ signature_offset + IMAGE_FILE_SIGNATURE_LENGTH) < 0)
+ ||
+ // Read field that contains code of architecture
+ // that dll was built for
+ (sizeof(lib_arch) != (os::read(fd, (void*)&lib_arch, sizeof(lib_arch))))
+ );
+
+ ::close(fd);
+ if (failed_to_get_lib_arch) {
// file i/o error - report os::lasterror(...) msg
return NULL;
}
- typedef struct
- {
+ typedef struct {
uint16_t arch_code;
char* arch_name;
} arch_t;
- static const arch_t arch_array[]={
+ static const arch_t arch_array[] = {
{IMAGE_FILE_MACHINE_I386, (char*)"IA 32"},
{IMAGE_FILE_MACHINE_AMD64, (char*)"AMD 64"},
{IMAGE_FILE_MACHINE_IA64, (char*)"IA 64"}
};
- #if (defined _M_IA64)
- static const uint16_t running_arch=IMAGE_FILE_MACHINE_IA64;
- #elif (defined _M_AMD64)
- static const uint16_t running_arch=IMAGE_FILE_MACHINE_AMD64;
- #elif (defined _M_IX86)
- static const uint16_t running_arch=IMAGE_FILE_MACHINE_I386;
- #else
- #error Method os::dll_load requires that one of following \
- is defined :_M_IA64,_M_AMD64 or _M_IX86
- #endif
+#if (defined _M_IA64)
+ static const uint16_t running_arch = IMAGE_FILE_MACHINE_IA64;
+#elif (defined _M_AMD64)
+ static const uint16_t running_arch = IMAGE_FILE_MACHINE_AMD64;
+#elif (defined _M_IX86)
+ static const uint16_t running_arch = IMAGE_FILE_MACHINE_I386;
+#else
+ #error Method os::dll_load requires that one of following \
+ is defined :_M_IA64,_M_AMD64 or _M_IX86
+#endif
// Obtain a string for printf operation
// lib_arch_str shall contain string what platform this .dll was built for
// running_arch_str shall string contain what platform Hotspot was built for
- char *running_arch_str=NULL,*lib_arch_str=NULL;
- for (unsigned int i=0;i<ARRAY_SIZE(arch_array);i++)
- {
- if (lib_arch==arch_array[i].arch_code)
- lib_arch_str=arch_array[i].arch_name;
- if (running_arch==arch_array[i].arch_code)
- running_arch_str=arch_array[i].arch_name;
+ char *running_arch_str = NULL, *lib_arch_str = NULL;
+ for (unsigned int i = 0; i < ARRAY_SIZE(arch_array); i++) {
+ if (lib_arch == arch_array[i].arch_code) {
+ lib_arch_str = arch_array[i].arch_name;
+ }
+ if (running_arch == arch_array[i].arch_code) {
+ running_arch_str = arch_array[i].arch_name;
+ }
}
assert(running_arch_str,
- "Didn't find runing architecture code in arch_array");
-
- // If the architure is right
+ "Didn't find running architecture code in arch_array");
+
+ // If the architecture is right
// but some other error took place - report os::lasterror(...) msg
- if (lib_arch == running_arch)
- {
+ if (lib_arch == running_arch) {
return NULL;
}
- if (lib_arch_str!=NULL)
- {
- ::_snprintf(ebuf, ebuflen-1,
- "Can't load %s-bit .dll on a %s-bit platform",
- lib_arch_str,running_arch_str);
- }
- else
- {
+ if (lib_arch_str != NULL) {
+ ::_snprintf(ebuf, ebuflen - 1,
+ "Can't load %s-bit .dll on a %s-bit platform",
+ lib_arch_str, running_arch_str);
+ } else {
// don't know what architecture this dll was build for
- ::_snprintf(ebuf, ebuflen-1,
- "Can't load this .dll (machine code=0x%x) on a %s-bit platform",
- lib_arch,running_arch_str);
+ ::_snprintf(ebuf, ebuflen - 1,
+ "Can't load this .dll (machine code=0x%x) on a %s-bit platform",
+ lib_arch, running_arch_str);
}
return NULL;
}
void os::print_dll_info(outputStream *st) {
- st->print_cr("Dynamic libraries:");
- get_loaded_modules_info(_print_module, (void *)st);
+ st->print_cr("Dynamic libraries:");
+ get_loaded_modules_info(_print_module, (void *)st);
}
int os::get_loaded_modules_info(os::LoadedModulesCallbackFunc callback, void *param) {
@@ -1551,9 +1536,9 @@
DWORD size_needed;
if (!os::PSApiDll::EnumProcessModules(hProcess, modules,
- sizeof(modules), &size_needed)) {
- CloseHandle(hProcess);
- return 0;
+ sizeof(modules), &size_needed)) {
+ CloseHandle(hProcess);
+ return 0;
}
// number of modules that are currently loaded
@@ -1562,20 +1547,20 @@
for (int i = 0; i < MIN2(num_modules, MAX_NUM_MODULES); i++) {
// Get Full pathname:
if (!os::PSApiDll::GetModuleFileNameEx(hProcess, modules[i],
- filename, sizeof(filename))) {
- filename[0] = '\0';
+ filename, sizeof(filename))) {
+ filename[0] = '\0';
}
MODULEINFO modinfo;
if (!os::PSApiDll::GetModuleInformation(hProcess, modules[i],
- &modinfo, sizeof(modinfo))) {
- modinfo.lpBaseOfDll = NULL;
- modinfo.SizeOfImage = 0;
+ &modinfo, sizeof(modinfo))) {
+ modinfo.lpBaseOfDll = NULL;
+ modinfo.SizeOfImage = 0;
}
// Invoke callback function
result = callback(filename, (address)modinfo.lpBaseOfDll,
- (address)((u8)modinfo.lpBaseOfDll + (u8)modinfo.SizeOfImage), param);
+ (address)((u8)modinfo.lpBaseOfDll + (u8)modinfo.SizeOfImage), param);
if (result) break;
}
@@ -1726,13 +1711,13 @@
if (er->ExceptionCode == EXCEPTION_ACCESS_VIOLATION &&
er->NumberParameters >= 2) {
- switch (er->ExceptionInformation[0]) {
- case 0: st->print(", reading address"); break;
- case 1: st->print(", writing address"); break;
- default: st->print(", ExceptionInformation=" INTPTR_FORMAT,
- er->ExceptionInformation[0]);
- }
- st->print(" " INTPTR_FORMAT, er->ExceptionInformation[1]);
+ switch (er->ExceptionInformation[0]) {
+ case 0: st->print(", reading address"); break;
+ case 1: st->print(", writing address"); break;
+ default: st->print(", ExceptionInformation=" INTPTR_FORMAT,
+ er->ExceptionInformation[0]);
+ }
+ st->print(" " INTPTR_FORMAT, er->ExceptionInformation[1]);
} else if (er->ExceptionCode == EXCEPTION_IN_PAGE_ERROR &&
er->NumberParameters >= 2 && UseSharedSpaces) {
FileMapInfo* mapinfo = FileMapInfo::current_info();
@@ -1782,7 +1767,6 @@
char* java_home_var = ::getenv("JAVA_HOME");
if (java_home_var != NULL && java_home_var[0] != 0 &&
strlen(java_home_var) < (size_t)buflen) {
-
strncpy(buf, java_home_var, buflen);
// determine if this is a legacy image or modules image
@@ -1827,13 +1811,13 @@
if ((errval = GetLastError()) != 0) {
// DOS error
size_t n = (size_t)FormatMessage(
- FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS,
- NULL,
- errval,
- 0,
- buf,
- (DWORD)len,
- NULL);
+ FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS,
+ NULL,
+ errval,
+ 0,
+ buf,
+ (DWORD)len,
+ NULL);
if (n > 3) {
// Drop final '.', CR, LF
if (buf[n - 1] == '\n') n--;
@@ -1859,8 +1843,9 @@
int os::get_last_error() {
DWORD error = GetLastError();
- if (error == 0)
+ if (error == 0) {
error = errno;
+ }
return (int)error;
}
@@ -1902,52 +1887,50 @@
//
static BOOL WINAPI consoleHandler(DWORD event) {
switch (event) {
- case CTRL_C_EVENT:
- if (is_error_reported()) {
- // Ctrl-C is pressed during error reporting, likely because the error
- // handler fails to abort. Let VM die immediately.
- os::die();
- }
-
- os::signal_raise(SIGINT);
- return TRUE;
- break;
- case CTRL_BREAK_EVENT:
- if (sigbreakHandler != NULL) {
- (*sigbreakHandler)(SIGBREAK);
- }
- return TRUE;
- break;
- case CTRL_LOGOFF_EVENT: {
- // Don't terminate JVM if it is running in a non-interactive session,
- // such as a service process.
- USEROBJECTFLAGS flags;
- HANDLE handle = GetProcessWindowStation();
- if (handle != NULL &&
- GetUserObjectInformation(handle, UOI_FLAGS, &flags,
- sizeof(USEROBJECTFLAGS), NULL)) {
- // If it is a non-interactive session, let next handler to deal
- // with it.
- if ((flags.dwFlags & WSF_VISIBLE) == 0) {
- return FALSE;
- }
+ case CTRL_C_EVENT:
+ if (is_error_reported()) {
+ // Ctrl-C is pressed during error reporting, likely because the error
+ // handler fails to abort. Let VM die immediately.
+ os::die();
+ }
+
+ os::signal_raise(SIGINT);
+ return TRUE;
+ break;
+ case CTRL_BREAK_EVENT:
+ if (sigbreakHandler != NULL) {
+ (*sigbreakHandler)(SIGBREAK);
+ }
+ return TRUE;
+ break;
+ case CTRL_LOGOFF_EVENT: {
+ // Don't terminate JVM if it is running in a non-interactive session,
+ // such as a service process.
+ USEROBJECTFLAGS flags;
+ HANDLE handle = GetProcessWindowStation();
+ if (handle != NULL &&
+ GetUserObjectInformation(handle, UOI_FLAGS, &flags,
+ sizeof(USEROBJECTFLAGS), NULL)) {
+ // If it is a non-interactive session, let next handler to deal
+ // with it.
+ if ((flags.dwFlags & WSF_VISIBLE) == 0) {
+ return FALSE;
}
}
- case CTRL_CLOSE_EVENT:
- case CTRL_SHUTDOWN_EVENT:
- os::signal_raise(SIGTERM);
- return TRUE;
- break;
- default:
- break;
+ }
+ case CTRL_CLOSE_EVENT:
+ case CTRL_SHUTDOWN_EVENT:
+ os::signal_raise(SIGTERM);
+ return TRUE;
+ break;
+ default:
+ break;
}
return FALSE;
}
-/*
- * The following code is moved from os.cpp for making this
- * code platform specific, which it is by its very nature.
- */
+// The following code is moved from os.cpp for making this
+// code platform specific, which it is by its very nature.
// Return maximum OS signal used + 1 for internal use only
// Used as exit signal for signal_thread
@@ -2021,12 +2004,10 @@
// were we externally suspended while we were waiting?
threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
if (threadIsSuspended) {
- //
// The semaphore has been incremented, but while we were waiting
// another thread suspended us. We don't want to continue running
// while suspended because that would surprise the thread that
// suspended us.
- //
ret = ::ReleaseSemaphore(sig_sem, 1, NULL);
assert(ret != 0, "ReleaseSemaphore() failed");
@@ -2046,7 +2027,8 @@
// Implicit OS exception handling
-LONG Handle_Exception(struct _EXCEPTION_POINTERS* exceptionInfo, address handler) {
+LONG Handle_Exception(struct _EXCEPTION_POINTERS* exceptionInfo,
+ address handler) {
JavaThread* thread = JavaThread::current();
// Save pc in thread
#ifdef _M_IA64
@@ -2104,7 +2086,7 @@
// Handle NAT Bit consumption on IA64.
#ifdef _M_IA64
-#define EXCEPTION_REG_NAT_CONSUMPTION STATUS_REG_NAT_CONSUMPTION
+ #define EXCEPTION_REG_NAT_CONSUMPTION STATUS_REG_NAT_CONSUMPTION
#endif
// Windows Vista/2008 heap corruption check
@@ -2162,8 +2144,8 @@
const char* os::exception_name(int exception_code, char *buf, size_t size) {
for (int i = 0; exceptlabels[i].name != NULL; i++) {
if (exceptlabels[i].number == exception_code) {
- jio_snprintf(buf, size, "%s", exceptlabels[i].name);
- return buf;
+ jio_snprintf(buf, size, "%s", exceptlabels[i].name);
+ return buf;
}
}
@@ -2210,21 +2192,21 @@
DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode;
switch (exception_code) {
- case EXCEPTION_FLT_DENORMAL_OPERAND:
- case EXCEPTION_FLT_DIVIDE_BY_ZERO:
- case EXCEPTION_FLT_INEXACT_RESULT:
- case EXCEPTION_FLT_INVALID_OPERATION:
- case EXCEPTION_FLT_OVERFLOW:
- case EXCEPTION_FLT_STACK_CHECK:
- case EXCEPTION_FLT_UNDERFLOW:
- jint fp_control_word = (* (jint*) StubRoutines::addr_fpu_cntrl_wrd_std());
- if (fp_control_word != ctx->FloatSave.ControlWord) {
- // Restore FPCW and mask out FLT exceptions
- ctx->FloatSave.ControlWord = fp_control_word | 0xffffffc0;
- // Mask out pending FLT exceptions
- ctx->FloatSave.StatusWord &= 0xffffff00;
- return EXCEPTION_CONTINUE_EXECUTION;
- }
+ case EXCEPTION_FLT_DENORMAL_OPERAND:
+ case EXCEPTION_FLT_DIVIDE_BY_ZERO:
+ case EXCEPTION_FLT_INEXACT_RESULT:
+ case EXCEPTION_FLT_INVALID_OPERATION:
+ case EXCEPTION_FLT_OVERFLOW:
+ case EXCEPTION_FLT_STACK_CHECK:
+ case EXCEPTION_FLT_UNDERFLOW:
+ jint fp_control_word = (* (jint*) StubRoutines::addr_fpu_cntrl_wrd_std());
+ if (fp_control_word != ctx->FloatSave.ControlWord) {
+ // Restore FPCW and mask out FLT exceptions
+ ctx->FloatSave.ControlWord = fp_control_word | 0xffffffc0;
+ // Mask out pending FLT exceptions
+ ctx->FloatSave.StatusWord &= 0xffffff00;
+ return EXCEPTION_CONTINUE_EXECUTION;
+ }
}
if (prev_uef_handler != NULL) {
@@ -2233,17 +2215,16 @@
return (prev_uef_handler)(exceptionInfo);
}
#else // !_WIN64
-/*
- On Windows, the mxcsr control bits are non-volatile across calls
- See also CR 6192333
- */
- jint MxCsr = INITIAL_MXCSR;
- // we can't use StubRoutines::addr_mxcsr_std()
- // because in Win64 mxcsr is not saved there
- if (MxCsr != ctx->MxCsr) {
- ctx->MxCsr = MxCsr;
- return EXCEPTION_CONTINUE_EXECUTION;
- }
+ // On Windows, the mxcsr control bits are non-volatile across calls
+ // See also CR 6192333
+ //
+ jint MxCsr = INITIAL_MXCSR;
+ // we can't use StubRoutines::addr_mxcsr_std()
+ // because in Win64 mxcsr is not saved there
+ if (MxCsr != ctx->MxCsr) {
+ ctx->MxCsr = MxCsr;
+ return EXCEPTION_CONTINUE_EXECUTION;
+ }
#endif // !_WIN64
return EXCEPTION_CONTINUE_SEARCH;
@@ -2429,7 +2410,7 @@
thread->enable_register_stack_red_zone();
return Handle_Exception(exceptionInfo,
- SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW));
+ SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW));
}
#endif
if (thread->stack_yellow_zone_enabled()) {
@@ -2438,9 +2419,9 @@
// update the enabled status, even if the zone contains only one page.
thread->disable_stack_yellow_zone();
// If not in java code, return and hope for the best.
- return in_java ? Handle_Exception(exceptionInfo,
- SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW))
- : EXCEPTION_CONTINUE_EXECUTION;
+ return in_java
+ ? Handle_Exception(exceptionInfo, SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW))
+ : EXCEPTION_CONTINUE_EXECUTION;
} else {
// Fatal red zone violation.
thread->disable_stack_red_zone();
@@ -2454,7 +2435,7 @@
// a one-time-only guard page, which it has released to us. The next
// stack overflow on this thread will result in an ACCESS_VIOLATION.
return Handle_Exception(exceptionInfo,
- SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW));
+ SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW));
} else {
// Can only return and hope for the best. Further stack growth will
// result in an ACCESS_VIOLATION.
@@ -2469,15 +2450,13 @@
if (addr < stack_end && addr >= stack_end - os::vm_page_size()) {
// Stack overflow.
assert(!os::uses_stack_guard_pages(),
- "should be caught by red zone code above.");
+ "should be caught by red zone code above.");
return Handle_Exception(exceptionInfo,
- SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW));
+ SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW));
}
- //
// Check for safepoint polling and implicit null
// We only expect null pointers in the stubs (vtable)
// the rest are checked explicitly now.
- //
CodeBlob* cb = CodeCache::find_blob(pc);
if (cb != NULL) {
if (os::is_poll_address(addr)) {
@@ -2487,19 +2466,17 @@
}
{
#ifdef _WIN64
- //
// If it's a legal stack address map the entire region in
//
PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord;
address addr = (address) exceptionRecord->ExceptionInformation[1];
if (addr > thread->stack_yellow_zone_base() && addr < thread->stack_base()) {
- addr = (address)((uintptr_t)addr &
- (~((uintptr_t)os::vm_page_size() - (uintptr_t)1)));
- os::commit_memory((char *)addr, thread->stack_base() - addr,
- !ExecMem);
- return EXCEPTION_CONTINUE_EXECUTION;
- }
- else
+ addr = (address)((uintptr_t)addr &
+ (~((uintptr_t)os::vm_page_size() - (uintptr_t)1)));
+ os::commit_memory((char *)addr, thread->stack_base() - addr,
+ !ExecMem);
+ return EXCEPTION_CONTINUE_EXECUTION;
+ } else
#endif
{
// Null pointer exception.
@@ -2519,7 +2496,7 @@
*(bundle_start + 1), *bundle_start);
}
return Handle_Exception(exceptionInfo,
- SharedRuntime::continuation_for_implicit_exception(thread, pc_unix_format, SharedRuntime::IMPLICIT_NULL));
+ SharedRuntime::continuation_for_implicit_exception(thread, pc_unix_format, SharedRuntime::IMPLICIT_NULL));
}
}
@@ -2573,7 +2550,7 @@
// 1. must be first instruction in bundle
// 2. must be a break instruction with appropriate code
if ((((uint64_t) pc & 0x0F) == 0) &&
- (((IPF_Bundle*) pc)->get_slot0() == handle_wrong_method_break.bits())) {
+ (((IPF_Bundle*) pc)->get_slot0() == handle_wrong_method_break.bits())) {
return Handle_Exception(exceptionInfo,
(address)SharedRuntime::get_handle_wrong_method_stub());
}
@@ -2592,9 +2569,8 @@
} // switch
}
if (((thread->thread_state() == _thread_in_Java) ||
- (thread->thread_state() == _thread_in_native)) &&
- exception_code != EXCEPTION_UNCAUGHT_CXX_EXCEPTION)
- {
+ (thread->thread_state() == _thread_in_native)) &&
+ exception_code != EXCEPTION_UNCAUGHT_CXX_EXCEPTION) {
LONG result=Handle_FLT_Exception(exceptionInfo);
if (result==EXCEPTION_CONTINUE_EXECUTION) return result;
}
@@ -2625,14 +2601,19 @@
return EXCEPTION_CONTINUE_SEARCH;
}
-#define DEFINE_FAST_GETFIELD(Return,Fieldname,Result) \
-Return JNICALL jni_fast_Get##Result##Field_wrapper(JNIEnv *env, jobject obj, jfieldID fieldID) { \
- __try { \
- return (*JNI_FastGetField::jni_fast_Get##Result##Field_fp)(env, obj, fieldID); \
- } __except(fastJNIAccessorExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) { \
- } \
- return 0; \
-}
+#define DEFINE_FAST_GETFIELD(Return, Fieldname, Result) \
+ Return JNICALL jni_fast_Get##Result##Field_wrapper(JNIEnv *env, \
+ jobject obj, \
+ jfieldID fieldID) { \
+ __try { \
+ return (*JNI_FastGetField::jni_fast_Get##Result##Field_fp)(env, \
+ obj, \
+ fieldID); \
+ } __except(fastJNIAccessorExceptionFilter((_EXCEPTION_POINTERS*) \
+ _exception_info())) { \
+ } \
+ return 0; \
+ }
DEFINE_FAST_GETFIELD(jboolean, bool, Boolean)
DEFINE_FAST_GETFIELD(jbyte, byte, Byte)
@@ -2645,15 +2626,15 @@
address os::win32::fast_jni_accessor_wrapper(BasicType type) {
switch (type) {
- case T_BOOLEAN: return (address)jni_fast_GetBooleanField_wrapper;
- case T_BYTE: return (address)jni_fast_GetByteField_wrapper;
- case T_CHAR: return (address)jni_fast_GetCharField_wrapper;
- case T_SHORT: return (address)jni_fast_GetShortField_wrapper;
- case T_INT: return (address)jni_fast_GetIntField_wrapper;
- case T_LONG: return (address)jni_fast_GetLongField_wrapper;
- case T_FLOAT: return (address)jni_fast_GetFloatField_wrapper;
- case T_DOUBLE: return (address)jni_fast_GetDoubleField_wrapper;
- default: ShouldNotReachHere();
+ case T_BOOLEAN: return (address)jni_fast_GetBooleanField_wrapper;
+ case T_BYTE: return (address)jni_fast_GetByteField_wrapper;
+ case T_CHAR: return (address)jni_fast_GetCharField_wrapper;
+ case T_SHORT: return (address)jni_fast_GetShortField_wrapper;
+ case T_INT: return (address)jni_fast_GetIntField_wrapper;
+ case T_LONG: return (address)jni_fast_GetLongField_wrapper;
+ case T_FLOAT: return (address)jni_fast_GetFloatField_wrapper;
+ case T_DOUBLE: return (address)jni_fast_GetDoubleField_wrapper;
+ default: ShouldNotReachHere();
}
return (address)-1;
}
@@ -2665,7 +2646,7 @@
__try {
(*funcPtr)();
} __except(topLevelExceptionFilter(
- (_EXCEPTION_POINTERS*)_exception_info())) {
+ (_EXCEPTION_POINTERS*)_exception_info())) {
// Nothing to do.
}
}
@@ -2696,7 +2677,7 @@
// in the future, if so the code below needs to be revisited.
#ifndef MEM_LARGE_PAGES
-#define MEM_LARGE_PAGES 0x20000000
+ #define MEM_LARGE_PAGES 0x20000000
#endif
static HANDLE _hProcess;
@@ -2704,7 +2685,7 @@
// Container for NUMA node list info
class NUMANodeListHolder {
-private:
+ private:
int *_numa_used_node_list; // allocated below
int _numa_used_node_count;
@@ -2714,7 +2695,7 @@
}
}
-public:
+ public:
NUMANodeListHolder() {
_numa_used_node_count = 0;
_numa_used_node_list = NULL;
@@ -2762,7 +2743,7 @@
static bool request_lock_memory_privilege() {
_hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE,
- os::current_process_id());
+ os::current_process_id());
LUID luid;
if (_hProcess != NULL &&
@@ -2798,7 +2779,7 @@
// print a warning if UseNUMAInterleaving flag is specified on command line
bool warn_on_failure = use_numa_interleaving_specified;
-# define WARN(msg) if (warn_on_failure) { warning(msg); }
+#define WARN(msg) if (warn_on_failure) { warning(msg); }
// NUMAInterleaveGranularity cannot be less than vm_allocation_granularity (or _large_page_size if using large pages)
size_t min_interleave_granularity = UseLargePages ? _large_page_size : os::vm_allocation_granularity();
@@ -2832,8 +2813,9 @@
// Reasons for doing this:
// * UseLargePagesIndividualAllocation was set (normally only needed on WS2003 but possible to be set otherwise)
// * UseNUMAInterleaving requires a separate node for each piece
-static char* allocate_pages_individually(size_t bytes, char* addr, DWORD flags, DWORD prot,
- bool should_inject_error=false) {
+static char* allocate_pages_individually(size_t bytes, char* addr, DWORD flags,
+ DWORD prot,
+ bool should_inject_error = false) {
char * p_buf;
// note: at setup time we guaranteed that NUMAInterleaveGranularity was aligned up to a page size
size_t page_size = UseLargePages ? _large_page_size : os::vm_allocation_granularity();
@@ -2922,7 +2904,7 @@
// need to create a dummy 'reserve' record to match
// the release.
MemTracker::record_virtual_memory_reserve((address)p_buf,
- bytes_to_release, CALLER_PC);
+ bytes_to_release, CALLER_PC);
os::release_memory(p_buf, bytes_to_release);
}
#ifdef ASSERT
@@ -2961,7 +2943,7 @@
!FLAG_IS_DEFAULT(LargePageSizeInBytes);
bool success = false;
-# define WARN(msg) if (warn_on_failure) { warning(msg); }
+#define WARN(msg) if (warn_on_failure) { warning(msg); }
if (resolve_functions_for_large_page_init()) {
if (request_lock_memory_privilege()) {
size_t s = os::Kernel32Dll::GetLargePageMinimum();
@@ -3006,7 +2988,7 @@
// all or nothing deal. When we split a reservation, we must break the
// reservation into two reservations.
void os::pd_split_reserved_memory(char *base, size_t size, size_t split,
- bool realloc) {
+ bool realloc) {
if (size > 0) {
release_memory(base, size);
if (realloc) {
@@ -3023,7 +3005,7 @@
// Windows prevents multiple thread from remapping over each other so this loop is thread-safe.
char* os::reserve_memory_aligned(size_t size, size_t alignment) {
assert((alignment & (os::vm_allocation_granularity() - 1)) == 0,
- "Alignment must be a multiple of allocation granularity (page size)");
+ "Alignment must be a multiple of allocation granularity (page size)");
assert((size & (alignment -1)) == 0, "size must be 'alignment' aligned");
size_t extra_size = size + alignment;
@@ -3102,7 +3084,8 @@
return true;
}
-char* os::reserve_memory_special(size_t bytes, size_t alignment, char* addr, bool exec) {
+char* os::reserve_memory_special(size_t bytes, size_t alignment, char* addr,
+ bool exec) {
assert(UseLargePages, "only for large pages");
if (!is_size_aligned(bytes, os::large_page_size()) || alignment > os::large_page_size()) {
@@ -3117,7 +3100,7 @@
// 2) NUMA Interleaving is enabled, in which case we use a different node for each page
if (UseLargePagesIndividualAllocation || UseNUMAInterleaving) {
if (TracePageSizes && Verbose) {
- tty->print_cr("Reserving large pages individually.");
+ tty->print_cr("Reserving large pages individually.");
}
char * p_buf = allocate_pages_individually(bytes, addr, flags, prot, LargePagesIndividualAllocationInjectError);
if (p_buf == NULL) {
@@ -3136,7 +3119,7 @@
} else {
if (TracePageSizes && Verbose) {
- tty->print_cr("Reserving large pages in a single large chunk.");
+ tty->print_cr("Reserving large pages in a single large chunk.");
}
// normal policy just allocate it all at once
DWORD flag = MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES;
@@ -3229,7 +3212,7 @@
}
bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint,
- bool exec) {
+ bool exec) {
// alignment_hint is ignored on this OS
return pd_commit_memory(addr, size, exec);
}
@@ -3338,7 +3321,8 @@
return false;
}
-char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) {
+char *os::scan_pages(char *start, char* end, page_info* page_expected,
+ page_info* page_found) {
return end;
}
@@ -3377,9 +3361,9 @@
// to decreased efficiency related to increased timer "tick" rates. We want to minimize
// (a) calls to timeBeginPeriod() and timeEndPeriod() and (b) time spent with high
// resolution timers running.
-private:
- jlong resolution;
-public:
+ private:
+ jlong resolution;
+ public:
HighResolutionInterval(jlong ms) {
resolution = ms % 10L;
if (resolution != 0) {
@@ -3399,8 +3383,9 @@
while (ms > limit) {
int res;
- if ((res = sleep(thread, limit, interruptable)) != OS_TIMEOUT)
+ if ((res = sleep(thread, limit, interruptable)) != OS_TIMEOUT) {
return res;
+ }
ms -= limit;
}
@@ -3420,8 +3405,9 @@
HANDLE events[1];
events[0] = osthread->interrupt_event();
HighResolutionInterval *phri=NULL;
- if (!ForceTimeHighResolution)
+ if (!ForceTimeHighResolution) {
phri = new HighResolutionInterval(ms);
+ }
if (WaitForMultipleObjects(1, events, FALSE, (DWORD)ms) == WAIT_TIMEOUT) {
result = OS_TIMEOUT;
} else {
@@ -3441,7 +3427,6 @@
return result;
}
-//
// Short sleep, direct OS call.
//
// ms = 0, means allow others (if any) to run.
@@ -3524,7 +3509,8 @@
return ret ? OS_OK : OS_ERR;
}
-OSReturn os::get_native_priority(const Thread* const thread, int* priority_ptr) {
+OSReturn os::get_native_priority(const Thread* const thread,
+ int* priority_ptr) {
if (!UseThreadPriorities) {
*priority_ptr = java_to_os_priority[NormPriority];
return OS_OK;
@@ -3544,7 +3530,8 @@
void os::hint_no_preempt() {}
void os::interrupt(Thread* thread) {
- assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(),
+ assert(!thread->is_Java_thread() || Thread::current() == thread ||
+ Threads_lock->owned_by_self(),
"possibility of dangling Thread pointer");
OSThread* osthread = thread->osthread();
@@ -3556,12 +3543,12 @@
OrderAccess::release();
SetEvent(osthread->interrupt_event());
// For JSR166: unpark after setting status
- if (thread->is_Java_thread())
+ if (thread->is_Java_thread()) {
((JavaThread*)thread)->parker()->unpark();
+ }
ParkEvent * ev = thread->_ParkEvent;
if (ev != NULL) ev->unpark();
-
}
@@ -3608,31 +3595,34 @@
}
// GetCurrentThreadId() returns DWORD
-intx os::current_thread_id() { return GetCurrentThreadId(); }
+intx os::current_thread_id() { return GetCurrentThreadId(); }
static int _initial_pid = 0;
-int os::current_process_id()
-{
+int os::current_process_id() {
return (_initial_pid ? _initial_pid : _getpid());
}
-int os::win32::_vm_page_size = 0;
+int os::win32::_vm_page_size = 0;
int os::win32::_vm_allocation_granularity = 0;
-int os::win32::_processor_type = 0;
+int os::win32::_processor_type = 0;
// Processor level is not available on non-NT systems, use vm_version instead
-int os::win32::_processor_level = 0;
-julong os::win32::_physical_memory = 0;
-size_t os::win32::_default_stack_size = 0;
-
- intx os::win32::_os_thread_limit = 0;
+int os::win32::_processor_level = 0;
+julong os::win32::_physical_memory = 0;
+size_t os::win32::_default_stack_size = 0;
+
+intx os::win32::_os_thread_limit = 0;
volatile intx os::win32::_os_thread_count = 0;
-bool os::win32::_is_nt = false;
-bool os::win32::_is_windows_2003 = false;
-bool os::win32::_is_windows_server = false;
-
-bool os::win32::_has_performance_count = 0;
+bool os::win32::_is_nt = false;
+bool os::win32::_is_windows_2003 = false;
+bool os::win32::_is_windows_server = false;
+
+// 6573254
+// Currently, the bug is observed across all the supported Windows releases,
+// including the latest one (as of this writing - Windows Server 2012 R2)
+bool os::win32::_has_exit_bug = true;
+bool os::win32::_has_performance_count = 0;
void os::win32::initialize_system_info() {
SYSTEM_INFO si;
@@ -3655,27 +3645,27 @@
oi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
GetVersionEx((OSVERSIONINFO*)&oi);
switch (oi.dwPlatformId) {
- case VER_PLATFORM_WIN32_WINDOWS: _is_nt = false; break;
- case VER_PLATFORM_WIN32_NT:
- _is_nt = true;
- {
- int os_vers = oi.dwMajorVersion * 1000 + oi.dwMinorVersion;
- if (os_vers == 5002) {
- _is_windows_2003 = true;
- }
- if (oi.wProductType == VER_NT_DOMAIN_CONTROLLER ||
+ case VER_PLATFORM_WIN32_WINDOWS: _is_nt = false; break;
+ case VER_PLATFORM_WIN32_NT:
+ _is_nt = true;
+ {
+ int os_vers = oi.dwMajorVersion * 1000 + oi.dwMinorVersion;
+ if (os_vers == 5002) {
+ _is_windows_2003 = true;
+ }
+ if (oi.wProductType == VER_NT_DOMAIN_CONTROLLER ||
oi.wProductType == VER_NT_SERVER) {
- _is_windows_server = true;
- }
+ _is_windows_server = true;
}
- break;
- default: fatal("Unknown platform");
+ }
+ break;
+ default: fatal("Unknown platform");
}
_default_stack_size = os::current_stack_size();
assert(_default_stack_size > (size_t) _vm_page_size, "invalid stack size");
assert((_default_stack_size & (_vm_page_size - 1)) == 0,
- "stack size not a multiple of page size");
+ "stack size not a multiple of page size");
initialize_performance_counter();
@@ -3690,7 +3680,8 @@
}
-HINSTANCE os::win32::load_Windows_dll(const char* name, char *ebuf, int ebuflen) {
+HINSTANCE os::win32::load_Windows_dll(const char* name, char *ebuf,
+ int ebuflen) {
char path[MAX_PATH];
DWORD size;
DWORD pathLen = (DWORD)sizeof(path);
@@ -3701,7 +3692,7 @@
assert(strchr(name, ':') == NULL, "path not allowed");
if (strchr(name, '\\') != NULL || strchr(name, ':') != NULL) {
jio_snprintf(ebuf, ebuflen,
- "Invalid parameter while calling os::win32::load_windows_dll(): cannot take path: %s", name);
+ "Invalid parameter while calling os::win32::load_windows_dll(): cannot take path: %s", name);
return NULL;
}
@@ -3724,10 +3715,73 @@
}
jio_snprintf(ebuf, ebuflen,
- "os::win32::load_windows_dll() cannot load %s from system directories.", name);
+ "os::win32::load_windows_dll() cannot load %s from system directories.", name);
return NULL;
}
+#define MIN_EXIT_MUTEXES 1
+#define MAX_EXIT_MUTEXES 16
+
+struct ExitMutexes {
+ DWORD count;
+ HANDLE handles[MAX_EXIT_MUTEXES];
+};
+
+static BOOL CALLBACK init_muts_call(PINIT_ONCE, PVOID ppmuts, PVOID*) {
+ static ExitMutexes muts;
+
+ muts.count = os::processor_count();
+ if (muts.count < MIN_EXIT_MUTEXES) {
+ muts.count = MIN_EXIT_MUTEXES;
+ } else if (muts.count > MAX_EXIT_MUTEXES) {
+ muts.count = MAX_EXIT_MUTEXES;
+ }
+
+ for (DWORD i = 0; i < muts.count; ++i) {
+ muts.handles[i] = CreateMutex(NULL, FALSE, NULL);
+ if (muts.handles[i] == NULL) {
+ return FALSE;
+ }
+ }
+ *((ExitMutexes**)ppmuts) = &muts;
+ return TRUE;
+}
+
+int os::win32::exit_process_or_thread(Ept what, int exit_code) {
+ if (os::win32::has_exit_bug()) {
+ static INIT_ONCE init_once_muts = INIT_ONCE_STATIC_INIT;
+ static ExitMutexes* pmuts;
+
+ if (!InitOnceExecuteOnce(&init_once_muts, init_muts_call, &pmuts, NULL)) {
+ warning("ExitMutex initialization failed in %s: %d\n", __FILE__, __LINE__);
+ } else if (WaitForMultipleObjects(pmuts->count, pmuts->handles,
+ (what != EPT_THREAD), // exiting process waits for all mutexes
+ INFINITE) == WAIT_FAILED) {
+ warning("ExitMutex acquisition failed in %s: %d\n", __FILE__, __LINE__);
+ }
+ }
+
+ switch (what) {
+ case EPT_THREAD:
+ _endthreadex((unsigned)exit_code);
+ break;
+
+ case EPT_PROCESS:
+ ::exit(exit_code);
+ break;
+
+ case EPT_PROCESS_DIE:
+ _exit(exit_code);
+ break;
+ }
+
+ // should not reach here
+ return exit_code;
+}
+
+#undef MIN_EXIT_MUTEXES
+#undef MAX_EXIT_MUTEXES
+
void os::win32::setmode_streams() {
_setmode(_fileno(stdin), _O_BINARY);
_setmode(_fileno(stdout), _O_BINARY);
@@ -3813,11 +3867,11 @@
// This may be overridden later when argument processing is done.
FLAG_SET_ERGO(bool, UseLargePagesIndividualAllocation,
- os::win32::is_windows_2003());
+ os::win32::is_windows_2003());
// Initialize main_process and main_thread
main_process = GetCurrentProcess(); // Remember main_process is a pseudo handle
- if (!DuplicateHandle(main_process, GetCurrentThread(), main_process,
+ if (!DuplicateHandle(main_process, GetCurrentThread(), main_process,
&main_thread, THREAD_ALL_ACCESS, false, 0)) {
fatal("DuplicateHandle failed\n");
}
@@ -3845,8 +3899,10 @@
os::set_polling_page(polling_page);
#ifndef PRODUCT
- if (Verbose && PrintMiscellaneous)
- tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page);
+ if (Verbose && PrintMiscellaneous) {
+ tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n",
+ (intptr_t)polling_page);
+ }
#endif
if (!UseMembar) {
@@ -3859,8 +3915,10 @@
os::set_memory_serialize_page(mem_serialize_page);
#ifndef PRODUCT
- if (Verbose && PrintMiscellaneous)
- tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page);
+ if (Verbose && PrintMiscellaneous) {
+ tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n",
+ (intptr_t)mem_serialize_page);
+ }
#endif
}
@@ -3900,7 +3958,7 @@
// class initialization depending on 32 or 64 bit VM.
size_t min_stack_allowed =
(size_t)(StackYellowPages+StackRedPages+StackShadowPages+
- 2*BytesPerWord COMPILER2_PRESENT(+1)) * os::vm_page_size();
+ 2*BytesPerWord COMPILER2_PRESENT(+1)) * os::vm_page_size();
if (actual_reserve_size < min_stack_allowed) {
tty->print_cr("\nThe stack size specified is too small, "
"Specify at least %dk",
@@ -3975,16 +4033,20 @@
// Mark the polling page as unreadable
void os::make_polling_page_unreadable(void) {
DWORD old_status;
- if (!VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_NOACCESS, &old_status))
+ if (!VirtualProtect((char *)_polling_page, os::vm_page_size(),
+ PAGE_NOACCESS, &old_status)) {
fatal("Could not disable polling page");
-};
+ }
+}
// Mark the polling page as readable
void os::make_polling_page_readable(void) {
DWORD old_status;
- if (!VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_READONLY, &old_status))
+ if (!VirtualProtect((char *)_polling_page, os::vm_page_size(),
+ PAGE_READONLY, &old_status)) {
fatal("Could not enable polling page");
-};
+ }
+}
int os::stat(const char *path, struct stat *sbuf) {
@@ -4060,15 +4122,14 @@
FILETIME KernelTime;
FILETIME UserTime;
- if (GetThreadTimes(thread->osthread()->thread_handle(),
- &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0)
+ if (GetThreadTimes(thread->osthread()->thread_handle(), &CreationTime,
+ &ExitTime, &KernelTime, &UserTime) == 0) {
return -1;
- else
- if (user_sys_cpu_time) {
- return (FT2INT64(UserTime) + FT2INT64(KernelTime)) * 100;
- } else {
- return FT2INT64(UserTime) * 100;
- }
+ } else if (user_sys_cpu_time) {
+ return (FT2INT64(UserTime) + FT2INT64(KernelTime)) * 100;
+ } else {
+ return FT2INT64(UserTime) * 100;
+ }
} else {
return (jlong) timeGetTime() * 1000000;
}
@@ -4096,11 +4157,12 @@
FILETIME KernelTime;
FILETIME UserTime;
- if (GetThreadTimes(GetCurrentThread(),
- &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0)
+ if (GetThreadTimes(GetCurrentThread(), &CreationTime, &ExitTime,
+ &KernelTime, &UserTime) == 0) {
return false;
- else
+ } else {
return true;
+ }
} else {
return false;
}
@@ -4145,7 +4207,7 @@
if (strlen(path) > MAX_PATH - 1) {
errno = ENAMETOOLONG;
- return -1;
+ return -1;
}
os::native_path(strcpy(pathbuf, path));
return ::open(pathbuf, oflag | O_BINARY | O_NOINHERIT, mode);
@@ -4193,39 +4255,36 @@
// This method is a slightly reworked copy of JDK's sysNativePath
// from src/windows/hpi/src/path_md.c
-/* Convert a pathname to native format. On win32, this involves forcing all
- separators to be '\\' rather than '/' (both are legal inputs, but Win95
- sometimes rejects '/') and removing redundant separators. The input path is
- assumed to have been converted into the character encoding used by the local
- system. Because this might be a double-byte encoding, care is taken to
- treat double-byte lead characters correctly.
-
- This procedure modifies the given path in place, as the result is never
- longer than the original. There is no error return; this operation always
- succeeds. */
+// Convert a pathname to native format. On win32, this involves forcing all
+// separators to be '\\' rather than '/' (both are legal inputs, but Win95
+// sometimes rejects '/') and removing redundant separators. The input path is
+// assumed to have been converted into the character encoding used by the local
+// system. Because this might be a double-byte encoding, care is taken to
+// treat double-byte lead characters correctly.
+//
+// This procedure modifies the given path in place, as the result is never
+// longer than the original. There is no error return; this operation always
+// succeeds.
char * os::native_path(char *path) {
char *src = path, *dst = path, *end = path;
- char *colon = NULL; /* If a drive specifier is found, this will
- point to the colon following the drive
- letter */
-
- /* Assumption: '/', '\\', ':', and drive letters are never lead bytes */
- assert(((!::IsDBCSLeadByte('/'))
- && (!::IsDBCSLeadByte('\\'))
- && (!::IsDBCSLeadByte(':'))),
- "Illegal lead byte");
-
- /* Check for leading separators */
+ char *colon = NULL; // If a drive specifier is found, this will
+ // point to the colon following the drive letter
+
+ // Assumption: '/', '\\', ':', and drive letters are never lead bytes
+ assert(((!::IsDBCSLeadByte('/')) && (!::IsDBCSLeadByte('\\'))
+ && (!::IsDBCSLeadByte(':'))), "Illegal lead byte");
+
+ // Check for leading separators
#define isfilesep(c) ((c) == '/' || (c) == '\\')
while (isfilesep(*src)) {
src++;
}
if (::isalpha(*src) && !::IsDBCSLeadByte(*src) && src[1] == ':') {
- /* Remove leading separators if followed by drive specifier. This
- hack is necessary to support file URLs containing drive
- specifiers (e.g., "file://c:/path"). As a side effect,
- "/c:/path" can be used as an alternative to "c:/path". */
+ // Remove leading separators if followed by drive specifier. This
+ // hack is necessary to support file URLs containing drive
+ // specifiers (e.g., "file://c:/path"). As a side effect,
+ // "/c:/path" can be used as an alternative to "c:/path".
*dst++ = *src++;
colon = dst;
*dst++ = ':';
@@ -4233,55 +4292,55 @@
} else {
src = path;
if (isfilesep(src[0]) && isfilesep(src[1])) {
- /* UNC pathname: Retain first separator; leave src pointed at
- second separator so that further separators will be collapsed
- into the second separator. The result will be a pathname
- beginning with "\\\\" followed (most likely) by a host name. */
+ // UNC pathname: Retain first separator; leave src pointed at
+ // second separator so that further separators will be collapsed
+ // into the second separator. The result will be a pathname
+ // beginning with "\\\\" followed (most likely) by a host name.
src = dst = path + 1;
- path[0] = '\\'; /* Force first separator to '\\' */
+ path[0] = '\\'; // Force first separator to '\\'
}
}
end = dst;
- /* Remove redundant separators from remainder of path, forcing all
- separators to be '\\' rather than '/'. Also, single byte space
- characters are removed from the end of the path because those
- are not legal ending characters on this operating system.
- */
+ // Remove redundant separators from remainder of path, forcing all
+ // separators to be '\\' rather than '/'. Also, single byte space
+ // characters are removed from the end of the path because those
+ // are not legal ending characters on this operating system.
+ //
while (*src != '\0') {
if (isfilesep(*src)) {
*dst++ = '\\'; src++;
while (isfilesep(*src)) src++;
if (*src == '\0') {
- /* Check for trailing separator */
+ // Check for trailing separator
end = dst;
- if (colon == dst - 2) break; /* "z:\\" */
- if (dst == path + 1) break; /* "\\" */
+ if (colon == dst - 2) break; // "z:\\"
+ if (dst == path + 1) break; // "\\"
if (dst == path + 2 && isfilesep(path[0])) {
- /* "\\\\" is not collapsed to "\\" because "\\\\" marks the
- beginning of a UNC pathname. Even though it is not, by
- itself, a valid UNC pathname, we leave it as is in order
- to be consistent with the path canonicalizer as well
- as the win32 APIs, which treat this case as an invalid
- UNC pathname rather than as an alias for the root
- directory of the current drive. */
+ // "\\\\" is not collapsed to "\\" because "\\\\" marks the
+ // beginning of a UNC pathname. Even though it is not, by
+ // itself, a valid UNC pathname, we leave it as is in order
+ // to be consistent with the path canonicalizer as well
+ // as the win32 APIs, which treat this case as an invalid
+ // UNC pathname rather than as an alias for the root
+ // directory of the current drive.
break;
}
- end = --dst; /* Path does not denote a root directory, so
- remove trailing separator */
+ end = --dst; // Path does not denote a root directory, so
+ // remove trailing separator
break;
}
end = dst;
} else {
- if (::IsDBCSLeadByte(*src)) { /* Copy a double-byte character */
+ if (::IsDBCSLeadByte(*src)) { // Copy a double-byte character
*dst++ = *src++;
if (*src) *dst++ = *src++;
end = dst;
- } else { /* Copy a single-byte character */
+ } else { // Copy a single-byte character
char c = *src++;
*dst++ = c;
- /* Space is not a legal ending character */
+ // Space is not a legal ending character
if (c != ' ') end = dst;
}
}
@@ -4289,10 +4348,10 @@
*end = '\0';
- /* For "z:", add "." to work around a bug in the C runtime library */
+ // For "z:", add "." to work around a bug in the C runtime library
if (colon == dst - 1) {
- path[2] = '.';
- path[3] = '\0';
+ path[2] = '.';
+ path[3] = '\0';
}
return path;
@@ -4312,7 +4371,7 @@
ret = ::SetFilePointer(h, (long)(length), &high, FILE_BEGIN);
if ((ret == 0xFFFFFFFF) && (::GetLastError() != NO_ERROR)) {
- return -1;
+ return -1;
}
if (::SetEndOfFile(h) == FALSE) {
@@ -4331,8 +4390,8 @@
HANDLE handle = (HANDLE)::_get_osfhandle(fd);
if ((!::FlushFileBuffers(handle)) &&
- (GetLastError() != ERROR_ACCESS_DENIED) ) {
- /* from winerror.h */
+ (GetLastError() != ERROR_ACCESS_DENIED)) {
+ // from winerror.h
return -1;
}
return 0;
@@ -4382,12 +4441,10 @@
// from src/windows/hpi/src/sys_api_md.c
static int nonSeekAvailable(int fd, long *pbytes) {
- /* This is used for available on non-seekable devices
- * (like both named and anonymous pipes, such as pipes
- * connected to an exec'd process).
- * Standard Input is a special case.
- *
- */
+ // This is used for available on non-seekable devices
+ // (like both named and anonymous pipes, such as pipes
+ // connected to an exec'd process).
+ // Standard Input is a special case.
HANDLE han;
if ((han = (HANDLE) ::_get_osfhandle(fd)) == (HANDLE)(-1)) {
@@ -4395,12 +4452,12 @@
}
if (! ::PeekNamedPipe(han, NULL, 0, NULL, (LPDWORD)pbytes, NULL)) {
- /* PeekNamedPipe fails when at EOF. In that case we
- * simply make *pbytes = 0 which is consistent with the
- * behavior we get on Solaris when an fd is at EOF.
- * The only alternative is to raise an Exception,
- * which isn't really warranted.
- */
+ // PeekNamedPipe fails when at EOF. In that case we
+ // simply make *pbytes = 0 which is consistent with the
+ // behavior we get on Solaris when an fd is at EOF.
+ // The only alternative is to raise an Exception,
+ // which isn't really warranted.
+ //
if (::GetLastError() != ERROR_BROKEN_PIPE) {
return FALSE;
}
@@ -4416,25 +4473,25 @@
static int stdinAvailable(int fd, long *pbytes) {
HANDLE han;
- DWORD numEventsRead = 0; /* Number of events read from buffer */
- DWORD numEvents = 0; /* Number of events in buffer */
- DWORD i = 0; /* Loop index */
- DWORD curLength = 0; /* Position marker */
- DWORD actualLength = 0; /* Number of bytes readable */
- BOOL error = FALSE; /* Error holder */
- INPUT_RECORD *lpBuffer; /* Pointer to records of input events */
+ DWORD numEventsRead = 0; // Number of events read from buffer
+ DWORD numEvents = 0; // Number of events in buffer
+ DWORD i = 0; // Loop index
+ DWORD curLength = 0; // Position marker
+ DWORD actualLength = 0; // Number of bytes readable
+ BOOL error = FALSE; // Error holder
+ INPUT_RECORD *lpBuffer; // Pointer to records of input events
if ((han = ::GetStdHandle(STD_INPUT_HANDLE)) == INVALID_HANDLE_VALUE) {
- return FALSE;
- }
-
- /* Construct an array of input records in the console buffer */
+ return FALSE;
+ }
+
+ // Construct an array of input records in the console buffer
error = ::GetNumberOfConsoleInputEvents(han, &numEvents);
if (error == 0) {
return nonSeekAvailable(fd, pbytes);
}
- /* lpBuffer must fit into 64K or else PeekConsoleInput fails */
+ // lpBuffer must fit into 64K or else PeekConsoleInput fails
if (numEvents > MAX_INPUT_EVENTS) {
numEvents = MAX_INPUT_EVENTS;
}
@@ -4450,7 +4507,7 @@
return FALSE;
}
- /* Examine input records for the number of bytes available */
+ // Examine input records for the number of bytes available
for (i=0; i<numEvents; i++) {
if (lpBuffer[i].EventType == KEY_EVENT) {
@@ -4476,8 +4533,8 @@
// Map a block of memory.
char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset,
- char *addr, size_t bytes, bool read_only,
- bool allow_exec) {
+ char *addr, size_t bytes, bool read_only,
+ bool allow_exec) {
HANDLE hFile;
char* base;
@@ -4532,7 +4589,7 @@
}
} else {
HANDLE hMap = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0,
- NULL /*file_name*/);
+ NULL /* file_name */);
if (hMap == NULL) {
if (PrintMiscellaneous && Verbose) {
DWORD err = GetLastError();
@@ -4596,8 +4653,8 @@
// Remap a block of memory.
char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset,
- char *addr, size_t bytes, bool read_only,
- bool allow_exec) {
+ char *addr, size_t bytes, bool read_only,
+ bool allow_exec) {
// This OS does not allow existing memory maps to be remapped so we
// have to unmap the memory before we remap it.
if (!os::unmap_memory(addr, bytes)) {
@@ -4609,7 +4666,7 @@
// code may be able to access an address that is no longer mapped.
return os::map_memory(fd, file_name, file_offset, addr, bytes,
- read_only, allow_exec);
+ read_only, allow_exec);
}
@@ -4645,7 +4702,7 @@
}
} else {
jio_fprintf(stderr,
- "Could not open pause file '%s', continuing immediately.\n", filename);
+ "Could not open pause file '%s', continuing immediately.\n", filename);
}
}
@@ -4653,17 +4710,16 @@
assert(Thread::current()->is_Watcher_thread(), "Must be WatcherThread");
}
-/*
- * See the caveats for this class in os_windows.hpp
- * Protects the callback call so that raised OS EXCEPTIONS causes a jump back
- * into this method and returns false. If no OS EXCEPTION was raised, returns
- * true.
- * The callback is supposed to provide the method that should be protected.
- */
+// See the caveats for this class in os_windows.hpp
+// Protects the callback call so that raised OS EXCEPTIONS causes a jump back
+// into this method and returns false. If no OS EXCEPTION was raised, returns
+// true.
+// The callback is supposed to provide the method that should be protected.
+//
bool os::WatcherThreadCrashProtection::call(os::CrashProtectionCallback& cb) {
assert(Thread::current()->is_Watcher_thread(), "Only for WatcherThread");
assert(!WatcherThread::watcher_thread()->has_crash_protection(),
- "crash_protection already set?");
+ "crash_protection already set?");
bool success = true;
__try {
@@ -4728,86 +4784,86 @@
// Another possible encoding of _Event would be
// with explicit "PARKED" and "SIGNALED" bits.
-int os::PlatformEvent::park (jlong Millis) {
- guarantee(_ParkHandle != NULL , "Invariant");
- guarantee(Millis > 0 , "Invariant");
- int v;
-
- // CONSIDER: defer assigning a CreateEvent() handle to the Event until
- // the initial park() operation.
-
- for (;;) {
- v = _Event;
- if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
+int os::PlatformEvent::park(jlong Millis) {
+ guarantee(_ParkHandle != NULL , "Invariant");
+ guarantee(Millis > 0 , "Invariant");
+ int v;
+
+ // CONSIDER: defer assigning a CreateEvent() handle to the Event until
+ // the initial park() operation.
+
+ for (;;) {
+ v = _Event;
+ if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
+ }
+ guarantee((v == 0) || (v == 1), "invariant");
+ if (v != 0) return OS_OK;
+
+ // Do this the hard way by blocking ...
+ // TODO: consider a brief spin here, gated on the success of recent
+ // spin attempts by this thread.
+ //
+ // We decompose long timeouts into series of shorter timed waits.
+ // Evidently large timo values passed in WaitForSingleObject() are problematic on some
+ // versions of Windows. See EventWait() for details. This may be superstition. Or not.
+ // We trust the WAIT_TIMEOUT indication and don't track the elapsed wait time
+ // with os::javaTimeNanos(). Furthermore, we assume that spurious returns from
+ // ::WaitForSingleObject() caused by latent ::setEvent() operations will tend
+ // to happen early in the wait interval. Specifically, after a spurious wakeup (rv ==
+ // WAIT_OBJECT_0 but _Event is still < 0) we don't bother to recompute Millis to compensate
+ // for the already waited time. This policy does not admit any new outcomes.
+ // In the future, however, we might want to track the accumulated wait time and
+ // adjust Millis accordingly if we encounter a spurious wakeup.
+
+ const int MAXTIMEOUT = 0x10000000;
+ DWORD rv = WAIT_TIMEOUT;
+ while (_Event < 0 && Millis > 0) {
+ DWORD prd = Millis; // set prd = MAX (Millis, MAXTIMEOUT)
+ if (Millis > MAXTIMEOUT) {
+ prd = MAXTIMEOUT;
}
- guarantee((v == 0) || (v == 1), "invariant");
- if (v != 0) return OS_OK;
-
- // Do this the hard way by blocking ...
- // TODO: consider a brief spin here, gated on the success of recent
- // spin attempts by this thread.
- //
- // We decompose long timeouts into series of shorter timed waits.
- // Evidently large timo values passed in WaitForSingleObject() are problematic on some
- // versions of Windows. See EventWait() for details. This may be superstition. Or not.
- // We trust the WAIT_TIMEOUT indication and don't track the elapsed wait time
- // with os::javaTimeNanos(). Furthermore, we assume that spurious returns from
- // ::WaitForSingleObject() caused by latent ::setEvent() operations will tend
- // to happen early in the wait interval. Specifically, after a spurious wakeup (rv ==
- // WAIT_OBJECT_0 but _Event is still < 0) we don't bother to recompute Millis to compensate
- // for the already waited time. This policy does not admit any new outcomes.
- // In the future, however, we might want to track the accumulated wait time and
- // adjust Millis accordingly if we encounter a spurious wakeup.
-
- const int MAXTIMEOUT = 0x10000000;
- DWORD rv = WAIT_TIMEOUT;
- while (_Event < 0 && Millis > 0) {
- DWORD prd = Millis; // set prd = MAX (Millis, MAXTIMEOUT)
- if (Millis > MAXTIMEOUT) {
- prd = MAXTIMEOUT;
- }
- rv = ::WaitForSingleObject(_ParkHandle, prd);
- assert(rv == WAIT_OBJECT_0 || rv == WAIT_TIMEOUT, "WaitForSingleObject failed");
- if (rv == WAIT_TIMEOUT) {
- Millis -= prd;
- }
+ rv = ::WaitForSingleObject(_ParkHandle, prd);
+ assert(rv == WAIT_OBJECT_0 || rv == WAIT_TIMEOUT, "WaitForSingleObject failed");
+ if (rv == WAIT_TIMEOUT) {
+ Millis -= prd;
}
- v = _Event;
- _Event = 0;
- // see comment at end of os::PlatformEvent::park() below:
- OrderAccess::fence();
- // If we encounter a nearly simultanous timeout expiry and unpark()
- // we return OS_OK indicating we awoke via unpark().
- // Implementor's license -- returning OS_TIMEOUT would be equally valid, however.
- return (v >= 0) ? OS_OK : OS_TIMEOUT;
+ }
+ v = _Event;
+ _Event = 0;
+ // see comment at end of os::PlatformEvent::park() below:
+ OrderAccess::fence();
+ // If we encounter a nearly simultanous timeout expiry and unpark()
+ // we return OS_OK indicating we awoke via unpark().
+ // Implementor's license -- returning OS_TIMEOUT would be equally valid, however.
+ return (v >= 0) ? OS_OK : OS_TIMEOUT;
}
void os::PlatformEvent::park() {
- guarantee(_ParkHandle != NULL, "Invariant");
- // Invariant: Only the thread associated with the Event/PlatformEvent
- // may call park().
- int v;
- for (;;) {
- v = _Event;
- if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
- }
- guarantee((v == 0) || (v == 1), "invariant");
- if (v != 0) return;
-
- // Do this the hard way by blocking ...
- // TODO: consider a brief spin here, gated on the success of recent
- // spin attempts by this thread.
- while (_Event < 0) {
- DWORD rv = ::WaitForSingleObject(_ParkHandle, INFINITE);
- assert(rv == WAIT_OBJECT_0, "WaitForSingleObject failed");
- }
-
- // Usually we'll find _Event == 0 at this point, but as
- // an optional optimization we clear it, just in case can
- // multiple unpark() operations drove _Event up to 1.
- _Event = 0;
- OrderAccess::fence();
- guarantee(_Event >= 0, "invariant");
+ guarantee(_ParkHandle != NULL, "Invariant");
+ // Invariant: Only the thread associated with the Event/PlatformEvent
+ // may call park().
+ int v;
+ for (;;) {
+ v = _Event;
+ if (Atomic::cmpxchg(v-1, &_Event, v) == v) break;
+ }
+ guarantee((v == 0) || (v == 1), "invariant");
+ if (v != 0) return;
+
+ // Do this the hard way by blocking ...
+ // TODO: consider a brief spin here, gated on the success of recent
+ // spin attempts by this thread.
+ while (_Event < 0) {
+ DWORD rv = ::WaitForSingleObject(_ParkHandle, INFINITE);
+ assert(rv == WAIT_OBJECT_0, "WaitForSingleObject failed");
+ }
+
+ // Usually we'll find _Event == 0 at this point, but as
+ // an optional optimization we clear it, just in case can
+ // multiple unpark() operations drove _Event up to 1.
+ _Event = 0;
+ OrderAccess::fence();
+ guarantee(_Event >= 0, "invariant");
}
void os::PlatformEvent::unpark() {
@@ -4836,32 +4892,28 @@
// JSR166
// -------------------------------------------------------
-/*
- * The Windows implementation of Park is very straightforward: Basic
- * operations on Win32 Events turn out to have the right semantics to
- * use them directly. We opportunistically resuse the event inherited
- * from Monitor.
- */
-
+// The Windows implementation of Park is very straightforward: Basic
+// operations on Win32 Events turn out to have the right semantics to
+// use them directly. We opportunistically resuse the event inherited
+// from Monitor.
void Parker::park(bool isAbsolute, jlong time) {
guarantee(_ParkEvent != NULL, "invariant");
// First, demultiplex/decode time arguments
if (time < 0) { // don't wait
return;
- }
- else if (time == 0 && !isAbsolute) {
+ } else if (time == 0 && !isAbsolute) {
time = INFINITE;
- }
- else if (isAbsolute) {
+ } else if (isAbsolute) {
time -= os::javaTimeMillis(); // convert to relative time
- if (time <= 0) // already elapsed
+ if (time <= 0) { // already elapsed
return;
- }
- else { // relative
- time /= 1000000; // Must coarsen from nanos to millis
- if (time == 0) // Wait for the minimal time unit if zero
+ }
+ } else { // relative
+ time /= 1000000; // Must coarsen from nanos to millis
+ if (time == 0) { // Wait for the minimal time unit if zero
time = 1;
+ }
}
JavaThread* thread = (JavaThread*)(Thread::current());
@@ -4870,11 +4922,10 @@
// Don't wait if interrupted or already triggered
if (Thread::is_interrupted(thread, false) ||
- WaitForSingleObject(_ParkEvent, 0) == WAIT_OBJECT_0) {
+ WaitForSingleObject(_ParkEvent, 0) == WAIT_OBJECT_0) {
ResetEvent(_ParkEvent);
return;
- }
- else {
+ } else {
ThreadBlockInVM tbivm(jt);
OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */);
jt->set_suspend_equivalent();
@@ -4983,8 +5034,9 @@
PEXCEPTION_RECORD exceptionRecord = e->ExceptionRecord;
address addr = (address) exceptionRecord->ExceptionInformation[1];
- if (os::is_memory_serialize_page(thread, addr))
+ if (os::is_memory_serialize_page(thread, addr)) {
return EXCEPTION_CONTINUE_EXECUTION;
+ }
}
return EXCEPTION_CONTINUE_SEARCH;
@@ -4998,13 +5050,13 @@
if (!os::WinSock2Dll::WinSock2Available()) {
jio_fprintf(stderr, "Could not load Winsock (error: %d)\n",
- ::GetLastError());
+ ::GetLastError());
return JNI_ERR;
}
if (os::WinSock2Dll::WSAStartup(MAKEWORD(2,2), &wsadata) != 0) {
jio_fprintf(stderr, "Could not initialize Winsock (error: %d)\n",
- ::GetLastError());
+ ::GetLastError());
return JNI_ERR;
}
return JNI_OK;
@@ -5104,9 +5156,9 @@
// WINDOWS CONTEXT Flags for THREAD_SAMPLING
#if defined(IA32)
-# define sampling_context_flags (CONTEXT_FULL | CONTEXT_FLOATING_POINT | CONTEXT_EXTENDED_REGISTERS)
+ #define sampling_context_flags (CONTEXT_FULL | CONTEXT_FLOATING_POINT | CONTEXT_EXTENDED_REGISTERS)
#elif defined (AMD64)
-# define sampling_context_flags (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
+ #define sampling_context_flags (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
#endif
// returns true if thread could be suspended,
@@ -5130,13 +5182,13 @@
// retrieve a suspend/resume context capable handle
// from the tid. Caller validates handle return value.
-void get_thread_handle_for_extended_context(HANDLE* h, OSThread::thread_id_t tid) {
+void get_thread_handle_for_extended_context(HANDLE* h,
+ OSThread::thread_id_t tid) {
if (h != NULL) {
*h = OpenThread(THREAD_SUSPEND_RESUME | THREAD_GET_CONTEXT | THREAD_QUERY_INFORMATION, FALSE, tid);
}
}
-//
// Thread sampling implementation
//
void os::SuspendedThreadTask::internal_do_task() {
@@ -5170,9 +5222,9 @@
// Kernel32 API
typedef SIZE_T (WINAPI* GetLargePageMinimum_Fn)(void);
-typedef LPVOID (WINAPI *VirtualAllocExNuma_Fn) (HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
-typedef BOOL (WINAPI *GetNumaHighestNodeNumber_Fn) (PULONG);
-typedef BOOL (WINAPI *GetNumaNodeProcessorMask_Fn) (UCHAR, PULONGLONG);
+typedef LPVOID (WINAPI *VirtualAllocExNuma_Fn)(HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
+typedef BOOL (WINAPI *GetNumaHighestNodeNumber_Fn)(PULONG);
+typedef BOOL (WINAPI *GetNumaNodeProcessorMask_Fn)(UCHAR, PULONGLONG);
typedef USHORT (WINAPI* RtlCaptureStackBackTrace_Fn)(ULONG, ULONG, PVOID*, PULONG);
GetLargePageMinimum_Fn os::Kernel32Dll::_GetLargePageMinimum = NULL;
@@ -5185,7 +5237,7 @@
BOOL os::Kernel32Dll::initialized = FALSE;
SIZE_T os::Kernel32Dll::GetLargePageMinimum() {
assert(initialized && _GetLargePageMinimum != NULL,
- "GetLargePageMinimumAvailable() not yet called");
+ "GetLargePageMinimumAvailable() not yet called");
return _GetLargePageMinimum();
}
@@ -5203,39 +5255,44 @@
return _VirtualAllocExNuma != NULL;
}
-LPVOID os::Kernel32Dll::VirtualAllocExNuma(HANDLE hProc, LPVOID addr, SIZE_T bytes, DWORD flags, DWORD prot, DWORD node) {
+LPVOID os::Kernel32Dll::VirtualAllocExNuma(HANDLE hProc, LPVOID addr,
+ SIZE_T bytes, DWORD flags,
+ DWORD prot, DWORD node) {
assert(initialized && _VirtualAllocExNuma != NULL,
- "NUMACallsAvailable() not yet called");
+ "NUMACallsAvailable() not yet called");
return _VirtualAllocExNuma(hProc, addr, bytes, flags, prot, node);
}
BOOL os::Kernel32Dll::GetNumaHighestNodeNumber(PULONG ptr_highest_node_number) {
assert(initialized && _GetNumaHighestNodeNumber != NULL,
- "NUMACallsAvailable() not yet called");
+ "NUMACallsAvailable() not yet called");
return _GetNumaHighestNodeNumber(ptr_highest_node_number);
}
-BOOL os::Kernel32Dll::GetNumaNodeProcessorMask(UCHAR node, PULONGLONG proc_mask) {
+BOOL os::Kernel32Dll::GetNumaNodeProcessorMask(UCHAR node,
+ PULONGLONG proc_mask) {
assert(initialized && _GetNumaNodeProcessorMask != NULL,
- "NUMACallsAvailable() not yet called");
+ "NUMACallsAvailable() not yet called");
return _GetNumaNodeProcessorMask(node, proc_mask);
}
USHORT os::Kernel32Dll::RtlCaptureStackBackTrace(ULONG FrameToSkip,
- ULONG FrameToCapture, PVOID* BackTrace, PULONG BackTraceHash) {
- if (!initialized) {
- initialize();
- }
-
- if (_RtlCaptureStackBackTrace != NULL) {
- return _RtlCaptureStackBackTrace(FrameToSkip, FrameToCapture,
- BackTrace, BackTraceHash);
- } else {
- return 0;
- }
+ ULONG FrameToCapture,
+ PVOID* BackTrace,
+ PULONG BackTraceHash) {
+ if (!initialized) {
+ initialize();
+ }
+
+ if (_RtlCaptureStackBackTrace != NULL) {
+ return _RtlCaptureStackBackTrace(FrameToSkip, FrameToCapture,
+ BackTrace, BackTraceHash);
+ } else {
+ return 0;
+ }
}
void os::Kernel32Dll::initializeCommon() {
@@ -5269,20 +5326,23 @@
return true;
}
- // Help tools
+// Help tools
inline BOOL os::Kernel32Dll::HelpToolsAvailable() {
return true;
}
-inline HANDLE os::Kernel32Dll::CreateToolhelp32Snapshot(DWORD dwFlags,DWORD th32ProcessId) {
+inline HANDLE os::Kernel32Dll::CreateToolhelp32Snapshot(DWORD dwFlags,
+ DWORD th32ProcessId) {
return ::CreateToolhelp32Snapshot(dwFlags, th32ProcessId);
}
-inline BOOL os::Kernel32Dll::Module32First(HANDLE hSnapshot,LPMODULEENTRY32 lpme) {
+inline BOOL os::Kernel32Dll::Module32First(HANDLE hSnapshot,
+ LPMODULEENTRY32 lpme) {
return ::Module32First(hSnapshot, lpme);
}
-inline BOOL os::Kernel32Dll::Module32Next(HANDLE hSnapshot,LPMODULEENTRY32 lpme) {
+inline BOOL os::Kernel32Dll::Module32Next(HANDLE hSnapshot,
+ LPMODULEENTRY32 lpme) {
return ::Module32Next(hSnapshot, lpme);
}
@@ -5296,15 +5356,23 @@
}
// PSAPI API
-inline BOOL os::PSApiDll::EnumProcessModules(HANDLE hProcess, HMODULE *lpModule, DWORD cb, LPDWORD lpcbNeeded) {
+inline BOOL os::PSApiDll::EnumProcessModules(HANDLE hProcess,
+ HMODULE *lpModule, DWORD cb,
+ LPDWORD lpcbNeeded) {
return ::EnumProcessModules(hProcess, lpModule, cb, lpcbNeeded);
}
-inline DWORD os::PSApiDll::GetModuleFileNameEx(HANDLE hProcess, HMODULE hModule, LPTSTR lpFilename, DWORD nSize) {
+inline DWORD os::PSApiDll::GetModuleFileNameEx(HANDLE hProcess,
+ HMODULE hModule,
+ LPTSTR lpFilename,
+ DWORD nSize) {
return ::GetModuleFileNameEx(hProcess, hModule, lpFilename, nSize);
}
-inline BOOL os::PSApiDll::GetModuleInformation(HANDLE hProcess, HMODULE hModule, LPMODULEINFO lpmodinfo, DWORD cb) {
+inline BOOL os::PSApiDll::GetModuleInformation(HANDLE hProcess,
+ HMODULE hModule,
+ LPMODULEINFO lpmodinfo,
+ DWORD cb) {
return ::GetModuleInformation(hProcess, hModule, lpmodinfo, cb);
}
@@ -5314,7 +5382,8 @@
// WinSock2 API
-inline BOOL os::WinSock2Dll::WSAStartup(WORD wVersionRequested, LPWSADATA lpWSAData) {
+inline BOOL os::WinSock2Dll::WSAStartup(WORD wVersionRequested,
+ LPWSADATA lpWSAData) {
return ::WSAStartup(wVersionRequested, lpWSAData);
}
@@ -5328,18 +5397,24 @@
// Advapi API
inline BOOL os::Advapi32Dll::AdjustTokenPrivileges(HANDLE TokenHandle,
- BOOL DisableAllPrivileges, PTOKEN_PRIVILEGES NewState, DWORD BufferLength,
- PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength) {
- return ::AdjustTokenPrivileges(TokenHandle, DisableAllPrivileges, NewState,
- BufferLength, PreviousState, ReturnLength);
-}
-
-inline BOOL os::Advapi32Dll::OpenProcessToken(HANDLE ProcessHandle, DWORD DesiredAccess,
- PHANDLE TokenHandle) {
- return ::OpenProcessToken(ProcessHandle, DesiredAccess, TokenHandle);
-}
-
-inline BOOL os::Advapi32Dll::LookupPrivilegeValue(LPCTSTR lpSystemName, LPCTSTR lpName, PLUID lpLuid) {
+ BOOL DisableAllPrivileges,
+ PTOKEN_PRIVILEGES NewState,
+ DWORD BufferLength,
+ PTOKEN_PRIVILEGES PreviousState,
+ PDWORD ReturnLength) {
+ return ::AdjustTokenPrivileges(TokenHandle, DisableAllPrivileges, NewState,
+ BufferLength, PreviousState, ReturnLength);
+}
+
+inline BOOL os::Advapi32Dll::OpenProcessToken(HANDLE ProcessHandle,
+ DWORD DesiredAccess,
+ PHANDLE TokenHandle) {
+ return ::OpenProcessToken(ProcessHandle, DesiredAccess, TokenHandle);
+}
+
+inline BOOL os::Advapi32Dll::LookupPrivilegeValue(LPCTSTR lpSystemName,
+ LPCTSTR lpName,
+ PLUID lpLuid) {
return ::LookupPrivilegeValue(lpSystemName, lpName, lpLuid);
}
@@ -5419,9 +5494,9 @@
#else
// Kernel32 API
typedef BOOL (WINAPI* SwitchToThread_Fn)(void);
-typedef HANDLE (WINAPI* CreateToolhelp32Snapshot_Fn)(DWORD,DWORD);
-typedef BOOL (WINAPI* Module32First_Fn)(HANDLE,LPMODULEENTRY32);
-typedef BOOL (WINAPI* Module32Next_Fn)(HANDLE,LPMODULEENTRY32);
+typedef HANDLE (WINAPI* CreateToolhelp32Snapshot_Fn)(DWORD, DWORD);
+typedef BOOL (WINAPI* Module32First_Fn)(HANDLE, LPMODULEENTRY32);
+typedef BOOL (WINAPI* Module32Next_Fn)(HANDLE, LPMODULEENTRY32);
typedef void (WINAPI* GetNativeSystemInfo_Fn)(LPSYSTEM_INFO);
SwitchToThread_Fn os::Kernel32Dll::_SwitchToThread = NULL;
@@ -5449,7 +5524,7 @@
BOOL os::Kernel32Dll::SwitchToThread() {
assert(initialized && _SwitchToThread != NULL,
- "SwitchToThreadAvailable() not yet called");
+ "SwitchToThreadAvailable() not yet called");
return _SwitchToThread();
}
@@ -5471,23 +5546,25 @@
_Module32Next != NULL;
}
-HANDLE os::Kernel32Dll::CreateToolhelp32Snapshot(DWORD dwFlags,DWORD th32ProcessId) {
+HANDLE os::Kernel32Dll::CreateToolhelp32Snapshot(DWORD dwFlags,
+ DWORD th32ProcessId) {
assert(initialized && _CreateToolhelp32Snapshot != NULL,
- "HelpToolsAvailable() not yet called");
+ "HelpToolsAvailable() not yet called");
return _CreateToolhelp32Snapshot(dwFlags, th32ProcessId);
}
BOOL os::Kernel32Dll::Module32First(HANDLE hSnapshot,LPMODULEENTRY32 lpme) {
assert(initialized && _Module32First != NULL,
- "HelpToolsAvailable() not yet called");
+ "HelpToolsAvailable() not yet called");
return _Module32First(hSnapshot, lpme);
}
-inline BOOL os::Kernel32Dll::Module32Next(HANDLE hSnapshot,LPMODULEENTRY32 lpme) {
+inline BOOL os::Kernel32Dll::Module32Next(HANDLE hSnapshot,
+ LPMODULEENTRY32 lpme) {
assert(initialized && _Module32Next != NULL,
- "HelpToolsAvailable() not yet called");
+ "HelpToolsAvailable() not yet called");
return _Module32Next(hSnapshot, lpme);
}
@@ -5502,7 +5579,7 @@
void os::Kernel32Dll::GetNativeSystemInfo(LPSYSTEM_INFO lpSystemInfo) {
assert(initialized && _GetNativeSystemInfo != NULL,
- "GetNativeSystemInfoAvailable() not yet called");
+ "GetNativeSystemInfoAvailable() not yet called");
_GetNativeSystemInfo(lpSystemInfo);
}
@@ -5511,7 +5588,7 @@
typedef BOOL (WINAPI *EnumProcessModules_Fn)(HANDLE, HMODULE *, DWORD, LPDWORD);
-typedef BOOL (WINAPI *GetModuleFileNameEx_Fn)(HANDLE, HMODULE, LPTSTR, DWORD);;
+typedef BOOL (WINAPI *GetModuleFileNameEx_Fn)(HANDLE, HMODULE, LPTSTR, DWORD);
typedef BOOL (WINAPI *GetModuleInformation_Fn)(HANDLE, HMODULE, LPMODULEINFO, DWORD);
EnumProcessModules_Fn os::PSApiDll::_EnumProcessModules = NULL;
@@ -5524,11 +5601,11 @@
HMODULE handle = os::win32::load_Windows_dll("PSAPI.DLL", NULL, 0);
if (handle != NULL) {
_EnumProcessModules = (EnumProcessModules_Fn)::GetProcAddress(handle,
- "EnumProcessModules");
+ "EnumProcessModules");
_GetModuleFileNameEx = (GetModuleFileNameEx_Fn)::GetProcAddress(handle,
- "GetModuleFileNameExA");
+ "GetModuleFileNameExA");
_GetModuleInformation = (GetModuleInformation_Fn)::GetProcAddress(handle,
- "GetModuleInformation");
+ "GetModuleInformation");
}
initialized = TRUE;
}
@@ -5536,21 +5613,24 @@
-BOOL os::PSApiDll::EnumProcessModules(HANDLE hProcess, HMODULE *lpModule, DWORD cb, LPDWORD lpcbNeeded) {
+BOOL os::PSApiDll::EnumProcessModules(HANDLE hProcess, HMODULE *lpModule,
+ DWORD cb, LPDWORD lpcbNeeded) {
assert(initialized && _EnumProcessModules != NULL,
- "PSApiAvailable() not yet called");
+ "PSApiAvailable() not yet called");
return _EnumProcessModules(hProcess, lpModule, cb, lpcbNeeded);
}
-DWORD os::PSApiDll::GetModuleFileNameEx(HANDLE hProcess, HMODULE hModule, LPTSTR lpFilename, DWORD nSize) {
+DWORD os::PSApiDll::GetModuleFileNameEx(HANDLE hProcess, HMODULE hModule,
+ LPTSTR lpFilename, DWORD nSize) {
assert(initialized && _GetModuleFileNameEx != NULL,
- "PSApiAvailable() not yet called");
+ "PSApiAvailable() not yet called");
return _GetModuleFileNameEx(hProcess, hModule, lpFilename, nSize);
}
-BOOL os::PSApiDll::GetModuleInformation(HANDLE hProcess, HMODULE hModule, LPMODULEINFO lpmodinfo, DWORD cb) {
+BOOL os::PSApiDll::GetModuleInformation(HANDLE hProcess, HMODULE hModule,
+ LPMODULEINFO lpmodinfo, DWORD cb) {
assert(initialized && _GetModuleInformation != NULL,
- "PSApiAvailable() not yet called");
+ "PSApiAvailable() not yet called");
return _GetModuleInformation(hProcess, hModule, lpmodinfo, cb);
}
@@ -5586,13 +5666,13 @@
BOOL os::WinSock2Dll::WSAStartup(WORD wVersionRequested, LPWSADATA lpWSAData) {
assert(initialized && _WSAStartup != NULL,
- "WinSock2Available() not yet called");
+ "WinSock2Available() not yet called");
return _WSAStartup(wVersionRequested, lpWSAData);
}
struct hostent* os::WinSock2Dll::gethostbyname(const char *name) {
assert(initialized && _gethostbyname != NULL,
- "WinSock2Available() not yet called");
+ "WinSock2Available() not yet called");
return _gethostbyname(name);
}
@@ -5618,35 +5698,40 @@
HMODULE handle = os::win32::load_Windows_dll("advapi32.dll", NULL, 0);
if (handle != NULL) {
_AdjustTokenPrivileges = (AdjustTokenPrivileges_Fn)::GetProcAddress(handle,
- "AdjustTokenPrivileges");
+ "AdjustTokenPrivileges");
_OpenProcessToken = (OpenProcessToken_Fn)::GetProcAddress(handle,
- "OpenProcessToken");
+ "OpenProcessToken");
_LookupPrivilegeValue = (LookupPrivilegeValue_Fn)::GetProcAddress(handle,
- "LookupPrivilegeValueA");
+ "LookupPrivilegeValueA");
}
initialized = TRUE;
}
}
BOOL os::Advapi32Dll::AdjustTokenPrivileges(HANDLE TokenHandle,
- BOOL DisableAllPrivileges, PTOKEN_PRIVILEGES NewState, DWORD BufferLength,
- PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength) {
- assert(initialized && _AdjustTokenPrivileges != NULL,
- "AdvapiAvailable() not yet called");
- return _AdjustTokenPrivileges(TokenHandle, DisableAllPrivileges, NewState,
- BufferLength, PreviousState, ReturnLength);
-}
-
-BOOL os::Advapi32Dll::OpenProcessToken(HANDLE ProcessHandle, DWORD DesiredAccess,
- PHANDLE TokenHandle) {
- assert(initialized && _OpenProcessToken != NULL,
- "AdvapiAvailable() not yet called");
- return _OpenProcessToken(ProcessHandle, DesiredAccess, TokenHandle);
-}
-
-BOOL os::Advapi32Dll::LookupPrivilegeValue(LPCTSTR lpSystemName, LPCTSTR lpName, PLUID lpLuid) {
- assert(initialized && _LookupPrivilegeValue != NULL,
- "AdvapiAvailable() not yet called");
+ BOOL DisableAllPrivileges,
+ PTOKEN_PRIVILEGES NewState,
+ DWORD BufferLength,
+ PTOKEN_PRIVILEGES PreviousState,
+ PDWORD ReturnLength) {
+ assert(initialized && _AdjustTokenPrivileges != NULL,
+ "AdvapiAvailable() not yet called");
+ return _AdjustTokenPrivileges(TokenHandle, DisableAllPrivileges, NewState,
+ BufferLength, PreviousState, ReturnLength);
+}
+
+BOOL os::Advapi32Dll::OpenProcessToken(HANDLE ProcessHandle,
+ DWORD DesiredAccess,
+ PHANDLE TokenHandle) {
+ assert(initialized && _OpenProcessToken != NULL,
+ "AdvapiAvailable() not yet called");
+ return _OpenProcessToken(ProcessHandle, DesiredAccess, TokenHandle);
+}
+
+BOOL os::Advapi32Dll::LookupPrivilegeValue(LPCTSTR lpSystemName,
+ LPCTSTR lpName, PLUID lpLuid) {
+ assert(initialized && _LookupPrivilegeValue != NULL,
+ "AdvapiAvailable() not yet called");
return _LookupPrivilegeValue(lpSystemName, lpName, lpLuid);
}
@@ -5694,7 +5779,7 @@
if (result == NULL) {
if (VerboseInternalVMTests) {
gclog_or_tty->print("Failed to allocate control block with size "SIZE_FORMAT". Skipping remainder of test.",
- large_allocation_size);
+ large_allocation_size);
}
} else {
os::release_memory_special(result, large_allocation_size);
@@ -5707,15 +5792,15 @@
if (actual_location == NULL) {
if (VerboseInternalVMTests) {
gclog_or_tty->print("Failed to allocate any memory at "PTR_FORMAT" size "SIZE_FORMAT". Skipping remainder of test.",
- expected_location, large_allocation_size);
+ expected_location, large_allocation_size);
}
} else {
// release memory
os::release_memory_special(actual_location, expected_allocation_size);
// only now check, after releasing any memory to avoid any leaks.
assert(actual_location == expected_location,
- err_msg("Failed to allocate memory at requested location "PTR_FORMAT" of size "SIZE_FORMAT", is "PTR_FORMAT" instead",
- expected_location, expected_allocation_size, actual_location));
+ err_msg("Failed to allocate memory at requested location "PTR_FORMAT" of size "SIZE_FORMAT", is "PTR_FORMAT" instead",
+ expected_location, expected_allocation_size, actual_location));
}
}
--- a/hotspot/src/os/windows/vm/os_windows.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/windows/vm/os_windows.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -36,6 +36,7 @@
class win32 {
friend class os;
+ friend unsigned __stdcall java_start(class Thread*);
protected:
static int _vm_page_size;
@@ -47,6 +48,7 @@
static bool _is_nt;
static bool _is_windows_2003;
static bool _is_windows_server;
+ static bool _has_exit_bug;
static bool _has_performance_count;
static void print_windows_version(outputStream* st);
@@ -69,8 +71,12 @@
// load dll from Windows system directory or Windows directory
static HINSTANCE load_Windows_dll(const char* name, char *ebuf, int ebuflen);
- private:
- static void initialize_performance_counter();
+ private:
+ enum Ept { EPT_THREAD, EPT_PROCESS, EPT_PROCESS_DIE };
+ // Wrapper around _endthreadex(), exit() and _exit()
+ static int exit_process_or_thread(Ept what, int exit_code);
+
+ static void initialize_performance_counter();
public:
// Generic interface:
@@ -88,6 +94,9 @@
// Tells whether the platform is Windows 2003
static bool is_windows_2003() { return _is_windows_2003; }
+ // Tells whether there can be the race bug during process exit on this platform
+ static bool has_exit_bug() { return _has_exit_bug; }
+
// Returns the byte size of a virtual memory page
static int vm_page_size() { return _vm_page_size; }
--- a/hotspot/src/os/windows/vm/os_windows.inline.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/os/windows/vm/os_windows.inline.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -100,6 +100,10 @@
return win32::_has_performance_count;
}
+inline void os::exit(int num) {
+ win32::exit_process_or_thread(win32::EPT_PROCESS, num);
+}
+
#define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) \
os::win32::call_test_func_with_wrapper(f)
--- a/hotspot/src/share/tools/ProjectCreator/FileTreeCreatorVC7.java Thu Sep 25 12:40:17 2014 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,156 +0,0 @@
-import static java.nio.file.FileVisitResult.CONTINUE;
-
-import java.io.IOException;
-import java.nio.file.FileSystems;
-import java.nio.file.FileVisitResult;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.attribute.BasicFileAttributes;
-import java.util.Stack;
-import java.util.Vector;
-
-public class FileTreeCreatorVC7 extends FileTreeCreator {
-
- public FileTreeCreatorVC7(Path startDir, Vector<BuildConfig> allConfigs, WinGammaPlatform wg) {
- super(startDir, allConfigs, wg);
- }
-
- @Override
- public FileVisitResult visitFile(Path file, BasicFileAttributes attr) {
- DirAttributes currentFileAttr = attributes.peek().clone();
- boolean usePch = false;
- boolean disablePch = false;
- boolean useIgnore = false;
- String fileName = file.getFileName().toString();
-
- // usePch applies to all configs for a file.
- if (fileName.equals(BuildConfig.getFieldString(null, "UseToGeneratePch"))) {
- usePch = true;
- }
-
- for (BuildConfig cfg : allConfigs) {
- if (cfg.lookupHashFieldInContext("IgnoreFile", fileName) != null) {
- useIgnore = true;
- currentFileAttr.setIgnore(cfg);
- } else if (cfg.matchesIgnoredPath(file.toAbsolutePath().toString())) {
- useIgnore = true;
- currentFileAttr.setIgnore(cfg);
- }
-
- if (cfg.lookupHashFieldInContext("DisablePch", fileName) != null) {
- disablePch = true;
- currentFileAttr.setDisablePch(cfg);
- }
-
- Vector<String> rv = new Vector<String>();
- cfg.collectRelevantVectors(rv, "AdditionalFile");
- for(String addFile : rv) {
- if (addFile.equals(fileName)) {
- // supress any ignore
- currentFileAttr.removeFromIgnored(cfg);
- }
- }
- }
-
- if (!useIgnore && !disablePch && !usePch) {
- wg.tag("File", new String[] { "RelativePath", vcProjLocation.relativize(file).toString()});
- } else {
- wg.startTag(
- "File",
- new String[] { "RelativePath", vcProjLocation.relativize(file).toString()});
-
- for (BuildConfig cfg : allConfigs) {
- boolean ignore = currentFileAttr.hasIgnore(cfg);
- String [] fileConfAttr;
-
- if (ignore) {
- fileConfAttr = new String[] {"Name", cfg.get("Name"), "ExcludedFromBuild", "TRUE" };
- } else {
- fileConfAttr = new String[] {"Name", cfg.get("Name")};
- }
-
- if (!disablePch && !usePch && !ignore) {
- continue;
- } else if (!disablePch && !usePch) {
- wg.tag("FileConfiguration", fileConfAttr);
- } else {
- wg.startTag("FileConfiguration", fileConfAttr);
- if (usePch) {
- // usePch always applies to all configs, might not always be so.
- wg.tag("Tool", new String[] {
- "Name", "VCCLCompilerTool", "UsePrecompiledHeader",
- "1" });
- assert(!disablePch);
- }
- if (disablePch) {
- if (currentFileAttr.hasDisablePch(cfg)) {
- wg.tag("Tool", new String[] {
- "Name", "VCCLCompilerTool", "UsePrecompiledHeader",
- "0" });
- }
- assert(!usePch);
- }
- wg.endTag();
- }
- }
- wg.endTag();
- }
-
- return CONTINUE;
- }
-
- @Override
- public FileVisitResult preVisitDirectory(Path path, BasicFileAttributes attrs)
- throws IOException {
- Boolean hide = false;
- DirAttributes newAttr = attributes.peek().clone();
-
- String rPath;
- if (path.toAbsolutePath().toString().equals(this.startDir.toAbsolutePath().toString())){
- rPath = startDir.toString();
- } else {
- rPath = path.getFileName().toString();
- }
-
- // check per config ignorePaths!
- for (BuildConfig cfg : allConfigs) {
- if (cfg.matchesIgnoredPath(path.toAbsolutePath().toString())) {
- newAttr.setIgnore(cfg);
- }
-
- // Hide is always on all configs. And additional files are never hiddden
- if (cfg.matchesHidePath(path.toAbsolutePath().toString())) {
- hide = true;
- break;
- }
- }
-
- if (!hide) {
- wg.startTag("Filter", new String[] {
- "Name", rPath});
-
- attributes.push(newAttr);
- return super.preVisitDirectory(path, attrs);
- } else {
- return FileVisitResult.SKIP_SUBTREE;
- }
- }
-
- @Override
- public FileVisitResult postVisitDirectory(Path dir, IOException exc) {
- //end matching attributes set by ignorepath
- wg.endTag();
- attributes.pop();
-
- return CONTINUE;
- }
-
- @Override
- public FileVisitResult visitFileFailed(Path file, IOException exc) {
- return CONTINUE;
- }
-
- public void writeFileTree() throws IOException {
- Files.walkFileTree(this.startDir, this);
- }
- }
\ No newline at end of file
--- a/hotspot/src/share/tools/ProjectCreator/WinGammaPlatformVC10.java Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/tools/ProjectCreator/WinGammaPlatformVC10.java Thu Sep 25 16:21:54 2014 -0700
@@ -33,7 +33,7 @@
import java.util.UUID;
import java.util.Vector;
-public class WinGammaPlatformVC10 extends WinGammaPlatformVC7 {
+public class WinGammaPlatformVC10 extends WinGammaPlatform {
LinkedList <String>filters = new LinkedList<String>();
--- a/hotspot/src/share/tools/ProjectCreator/WinGammaPlatformVC7.java Thu Sep 25 12:40:17 2014 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,353 +0,0 @@
-/*
- * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-import java.io.FileWriter;
-import java.io.IOException;
-import java.io.PrintWriter;
-import java.nio.file.FileSystems;
-import java.util.Vector;
-
-public class WinGammaPlatformVC7 extends WinGammaPlatform {
-
- // TODO How about moving all globals configs to its own BuildConfig?
-
- String projectVersion() {
- return "7.10";
- };
-
- public void writeProjectFile(String projectFileName, String projectName,
- Vector<BuildConfig> allConfigs) throws IOException {
- System.out.println();
- System.out.println(" Writing .vcproj file: " + projectFileName);
- // If we got this far without an error, we're safe to actually
- // write the .vcproj file
- printWriter = new PrintWriter(new FileWriter(projectFileName));
-
- printWriter
- .println("<?xml version=\"1.0\" encoding=\"windows-1251\"?>");
- startTag("VisualStudioProject", new String[] { "ProjectType",
- "Visual C++", "Version", projectVersion(), "Name", projectName,
- "ProjectGUID", "{8822CB5C-1C41-41C2-8493-9F6E1994338B}",
- "SccProjectName", "", "SccLocalPath", "" });
- startTag("Platforms");
- tag("Platform",
- new String[] { "Name",
- (String) BuildConfig.getField(null, "PlatformName") });
- endTag();
-
- startTag("Configurations");
-
- for (BuildConfig cfg : allConfigs) {
- writeConfiguration(cfg);
- }
-
- endTag();
-
- tag("References");
-
- writeFiles(allConfigs);
-
- tag("Globals");
-
- endTag();
- printWriter.close();
-
- System.out.println(" Done.");
- }
-
- void writeCustomToolConfig(Vector<BuildConfig> configs, String[] customToolAttrs) {
- for (BuildConfig cfg : configs) {
- startTag("FileConfiguration",
- new String[] { "Name", (String) cfg.get("Name") });
- tag("Tool", customToolAttrs);
-
- endTag();
- }
- }
-
- void writeFiles(Vector<BuildConfig> allConfigs) {
-
- // This code assummes there are no config specific includes.
- startTag("Files");
- String sourceBase = BuildConfig.getFieldString(null, "SourceBase");
-
- // Use first config for all global absolute includes.
- BuildConfig baseConfig = allConfigs.firstElement();
- Vector<String> rv = new Vector<String>();
-
- // Then use first config for all relative includes
- Vector<String> ri = new Vector<String>();
- baseConfig.collectRelevantVectors(ri, "RelativeSrcInclude");
- for (String f : ri) {
- rv.add(sourceBase + Util.sep + f);
- }
-
- baseConfig.collectRelevantVectors(rv, "AbsoluteSrcInclude");
-
- handleIncludes(rv, allConfigs);
-
- startTag("Filter", new String[] { "Name", "Resource Files", "Filter",
- "ico;cur;bmp;dlg;rc2;rct;bin;cnt;rtf;gif;jpg;jpeg;jpe" });
- endTag();
-
- endTag();
- }
-
- // Will visit file tree for each include
- private void handleIncludes(Vector<String> includes, Vector<BuildConfig> allConfigs) {
- for (String path : includes) {
- FileTreeCreatorVC7 ftc = new FileTreeCreatorVC7(FileSystems.getDefault().getPath(path) , allConfigs, this);
- try {
- ftc.writeFileTree();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
-
- void writeConfiguration(BuildConfig cfg) {
- startTag("Configuration", new String[] { "Name", cfg.get("Name"),
- "OutputDirectory", cfg.get("OutputDir"),
- "IntermediateDirectory", cfg.get("OutputDir"),
- "ConfigurationType", "2", "UseOfMFC", "0",
- "ATLMinimizesCRunTimeLibraryUsage", "FALSE" });
-
- tagV("Tool", cfg.getV("CompilerFlags"));
-
- tag("Tool", new String[] { "Name", "VCCustomBuildTool" });
-
- tagV("Tool", cfg.getV("LinkerFlags"));
-
- String postBuildCmd = BuildConfig.getFieldString(null,
- "PostbuildCommand");
- if (postBuildCmd != null) {
- tag("Tool",
- new String[] {
- "Name",
- "VCPostBuildEventTool",
- "Description",
- BuildConfig
- .getFieldString(null, "PostbuildDescription"),
- // Caution: String.replace(String,String) is available
- // from JDK5 onwards only
- "CommandLine",
- cfg.expandFormat(postBuildCmd.replace("\t",
- "
")) });
- }
-
- tag("Tool", new String[] { "Name", "VCPreBuildEventTool" });
-
- tag("Tool",
- new String[] {
- "Name",
- "VCPreLinkEventTool",
- "Description",
- BuildConfig.getFieldString(null, "PrelinkDescription"),
- // Caution: String.replace(String,String) is available
- // from JDK5 onwards only
- "CommandLine",
- cfg.expandFormat(BuildConfig.getFieldString(null,
- "PrelinkCommand").replace("\t", "
")) });
-
- tag("Tool", new String[] { "Name", "VCResourceCompilerTool",
- "PreprocessorDefinitions", "NDEBUG", "Culture", "1033" });
-
- tag("Tool", new String[] { "Name", "VCMIDLTool",
- "PreprocessorDefinitions", "NDEBUG", "MkTypLibCompatible",
- "TRUE", "SuppressStartupBanner", "TRUE", "TargetEnvironment",
- "1", "TypeLibraryName",
- cfg.get("OutputDir") + Util.sep + "vm.tlb", "HeaderFileName",
- "" });
-
- endTag();
- }
-
-
-
- protected String getProjectExt() {
- return ".vcproj";
- }
-}
-
-class CompilerInterfaceVC7 extends CompilerInterface {
- void getBaseCompilerFlags_common(Vector defines, Vector includes,
- String outDir, Vector rv) {
-
- // advanced M$ IDE (2003) can only recognize name if it's first or
- // second attribute in the tag - go guess
- addAttr(rv, "Name", "VCCLCompilerTool");
- addAttr(rv, "AdditionalIncludeDirectories", Util.join(",", includes));
- addAttr(rv, "PreprocessorDefinitions",
- Util.join(";", defines).replace("\"", """));
- addAttr(rv, "PrecompiledHeaderThrough", "precompiled.hpp");
- addAttr(rv, "PrecompiledHeaderFile", outDir + Util.sep + "vm.pch");
- addAttr(rv, "AssemblerListingLocation", outDir);
- addAttr(rv, "ObjectFile", outDir + Util.sep);
- addAttr(rv, "ProgramDataBaseFileName", outDir + Util.sep + "jvm.pdb");
- // Set /nologo optin
- addAttr(rv, "SuppressStartupBanner", "TRUE");
- // Surpass the default /Tc or /Tp. 0 is compileAsDefault
- addAttr(rv, "CompileAs", "0");
- // Set /W3 option. 3 is warningLevel_3
- addAttr(rv, "WarningLevel", "3");
- // Set /WX option,
- addAttr(rv, "WarnAsError", "TRUE");
- // Set /GS option
- addAttr(rv, "BufferSecurityCheck", "FALSE");
- // Set /Zi option. 3 is debugEnabled
- addAttr(rv, "DebugInformationFormat", "3");
- }
-
- Vector getBaseCompilerFlags(Vector defines, Vector includes, String outDir) {
- Vector rv = new Vector();
-
- getBaseCompilerFlags_common(defines, includes, outDir, rv);
- // Set /Yu option. 3 is pchUseUsingSpecific
- // Note: Starting VC8 pchUseUsingSpecific is 2 !!!
- addAttr(rv, "UsePrecompiledHeader", "3");
- // Set /EHsc- option
- addAttr(rv, "ExceptionHandling", "FALSE");
-
- return rv;
- }
-
- Vector getBaseLinkerFlags(String outDir, String outDll, String platformName) {
- Vector rv = new Vector();
-
- addAttr(rv, "Name", "VCLinkerTool");
- addAttr(rv, "AdditionalOptions",
- "/export:JNI_GetDefaultJavaVMInitArgs "
- + "/export:JNI_CreateJavaVM "
- + "/export:JVM_FindClassFromBootLoader "
- + "/export:JNI_GetCreatedJavaVMs "
- + "/export:jio_snprintf /export:jio_printf "
- + "/export:jio_fprintf /export:jio_vfprintf "
- + "/export:jio_vsnprintf "
- + "/export:JVM_GetVersionInfo "
- + "/export:JVM_GetThreadStateNames "
- + "/export:JVM_GetThreadStateValues "
- + "/export:JVM_InitAgentProperties ");
- addAttr(rv, "AdditionalDependencies", "Wsock32.lib winmm.lib");
- addAttr(rv, "OutputFile", outDll);
- // Set /INCREMENTAL option. 1 is linkIncrementalNo
- addAttr(rv, "LinkIncremental", "1");
- addAttr(rv, "SuppressStartupBanner", "TRUE");
- addAttr(rv, "ModuleDefinitionFile", outDir + Util.sep + "vm.def");
- addAttr(rv, "ProgramDatabaseFile", outDir + Util.sep + "jvm.pdb");
- // Set /SUBSYSTEM option. 2 is subSystemWindows
- addAttr(rv, "SubSystem", "2");
- addAttr(rv, "BaseAddress", "0x8000000");
- addAttr(rv, "ImportLibrary", outDir + Util.sep + "jvm.lib");
- if (platformName.equals("Win32")) {
- // Set /MACHINE option. 1 is X86
- addAttr(rv, "TargetMachine", "1");
- } else {
- // Set /MACHINE option. 17 is X64
- addAttr(rv, "TargetMachine", "17");
- }
-
- return rv;
- }
-
- void getDebugCompilerFlags_common(String opt, Vector rv) {
-
- // Set /On option
- addAttr(rv, "Optimization", opt);
- // Set /FR option. 1 is brAllInfo
- addAttr(rv, "BrowseInformation", "1");
- addAttr(rv, "BrowseInformationFile", "$(IntDir)" + Util.sep);
- // Set /MD option. 2 is rtMultiThreadedDLL
- addAttr(rv, "RuntimeLibrary", "2");
- // Set /Oy- option
- addAttr(rv, "OmitFramePointers", "FALSE");
-
- }
-
- Vector getDebugCompilerFlags(String opt, String platformName) {
- Vector rv = new Vector();
-
- getDebugCompilerFlags_common(opt, rv);
-
- return rv;
- }
-
- Vector getDebugLinkerFlags() {
- Vector rv = new Vector();
-
- addAttr(rv, "GenerateDebugInformation", "TRUE"); // == /DEBUG option
-
- return rv;
- }
-
- void getAdditionalNonKernelLinkerFlags(Vector rv) {
- extAttr(rv, "AdditionalOptions", "/export:AsyncGetCallTrace ");
- }
-
- void getProductCompilerFlags_common(Vector rv) {
- // Set /O2 option. 2 is optimizeMaxSpeed
- addAttr(rv, "Optimization", "2");
- // Set /Oy- option
- addAttr(rv, "OmitFramePointers", "FALSE");
- // Set /Ob option. 1 is expandOnlyInline
- addAttr(rv, "InlineFunctionExpansion", "1");
- // Set /GF option.
- addAttr(rv, "StringPooling", "TRUE");
- // Set /MD option. 2 is rtMultiThreadedDLL
- addAttr(rv, "RuntimeLibrary", "2");
- // Set /Gy option
- addAttr(rv, "EnableFunctionLevelLinking", "TRUE");
- }
-
- Vector getProductCompilerFlags() {
- Vector rv = new Vector();
-
- getProductCompilerFlags_common(rv);
-
- return rv;
- }
-
- Vector getProductLinkerFlags() {
- Vector rv = new Vector();
-
- // Set /OPT:REF option. 2 is optReferences
- addAttr(rv, "OptimizeReferences", "2");
- // Set /OPT:optFolding option. 2 is optFolding
- addAttr(rv, "EnableCOMDATFolding", "2");
-
- return rv;
- }
-
- String getOptFlag() {
- return "2";
- }
-
- String getNoOptFlag() {
- return "0";
- }
-
- String makeCfgName(String flavourBuild, String platform) {
- return flavourBuild + "|" + platform;
- }
-
-}
--- a/hotspot/src/share/tools/ProjectCreator/WinGammaPlatformVC8.java Thu Sep 25 12:40:17 2014 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,68 +0,0 @@
-/*
- * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-import java.util.Vector;
-
-public class WinGammaPlatformVC8 extends WinGammaPlatformVC7 {
-
- String projectVersion() {return "8.00";};
-
-}
-
-class CompilerInterfaceVC8 extends CompilerInterfaceVC7 {
-
- Vector getBaseCompilerFlags(Vector defines, Vector includes, String outDir) {
- Vector rv = new Vector();
-
- getBaseCompilerFlags_common(defines,includes, outDir, rv);
- // Set /Yu option. 2 is pchUseUsingSpecific
- addAttr(rv, "UsePrecompiledHeader", "2");
- // Set /EHsc- option. 0 is cppExceptionHandlingNo
- addAttr(rv, "ExceptionHandling", "0");
-
- // enable multi process builds
- extAttr(rv, "AdditionalOptions", "/MP");
-
- return rv;
- }
-
-
- Vector getDebugCompilerFlags(String opt, String platformName) {
- Vector rv = new Vector();
-
- getDebugCompilerFlags_common(opt,rv);
-
- return rv;
- }
-
- Vector getProductCompilerFlags() {
- Vector rv = new Vector();
-
- getProductCompilerFlags_common(rv);
-
- return rv;
- }
-
-
-}
--- a/hotspot/src/share/tools/ProjectCreator/WinGammaPlatformVC9.java Thu Sep 25 12:40:17 2014 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,32 +0,0 @@
-/*
- * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-public class WinGammaPlatformVC9 extends WinGammaPlatformVC8 {
-
- String projectVersion() {return "9.00";};
-
-}
-
-class CompilerInterfaceVC9 extends CompilerInterfaceVC8 {
-}
--- a/hotspot/src/share/vm/ci/ciField.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/ci/ciField.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -39,7 +39,6 @@
CI_PACKAGE_ACCESS
friend class ciEnv;
friend class ciInstanceKlass;
- friend class NonStaticFieldFiller;
private:
ciFlags _flags;
--- a/hotspot/src/share/vm/ci/ciInstanceKlass.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/ci/ciInstanceKlass.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -44,7 +44,7 @@
//
// Loaded instance klass.
ciInstanceKlass::ciInstanceKlass(KlassHandle h_k) :
- ciKlass(h_k), _non_static_fields(NULL)
+ ciKlass(h_k)
{
assert(get_Klass()->oop_is_instance(), "wrong type");
assert(get_instanceKlass()->is_loaded(), "must be at least loaded");
@@ -407,37 +407,6 @@
return field;
}
-// ------------------------------------------------------------------
-// ciInstanceKlass::non_static_fields.
-
-class NonStaticFieldFiller: public FieldClosure {
- GrowableArray<ciField*>* _arr;
- ciEnv* _curEnv;
-public:
- NonStaticFieldFiller(ciEnv* curEnv, GrowableArray<ciField*>* arr) :
- _curEnv(curEnv), _arr(arr)
- {}
- void do_field(fieldDescriptor* fd) {
- ciField* field = new (_curEnv->arena()) ciField(fd);
- _arr->append(field);
- }
-};
-
-GrowableArray<ciField*>* ciInstanceKlass::non_static_fields() {
- if (_non_static_fields == NULL) {
- VM_ENTRY_MARK;
- ciEnv* curEnv = ciEnv::current();
- InstanceKlass* ik = get_instanceKlass();
- int max_n_fields = ik->java_fields_count();
-
- Arena* arena = curEnv->arena();
- _non_static_fields =
- new (arena) GrowableArray<ciField*>(arena, max_n_fields, 0, NULL);
- NonStaticFieldFiller filler(curEnv, _non_static_fields);
- ik->do_nonstatic_fields(&filler);
- }
- return _non_static_fields;
-}
static int sort_field_by_offset(ciField** a, ciField** b) {
return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
--- a/hotspot/src/share/vm/ci/ciInstanceKlass.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/ci/ciInstanceKlass.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -71,8 +71,6 @@
// Itsef: more than one implementors.
ciInstanceKlass* _implementor;
- GrowableArray<ciField*>* _non_static_fields;
-
protected:
ciInstanceKlass(KlassHandle h_k);
ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain);
@@ -181,8 +179,6 @@
ciField* get_field_by_offset(int field_offset, bool is_static);
ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static);
- GrowableArray<ciField*>* non_static_fields();
-
// total number of nonstatic fields (including inherited):
int nof_nonstatic_fields() {
if (_nonstatic_fields == NULL)
--- a/hotspot/src/share/vm/code/nmethod.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/code/nmethod.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -1364,8 +1364,6 @@
// Remove from list of active nmethods
if (method() != NULL)
method()->method_holder()->remove_osr_nmethod(this);
- // Set entry as invalid
- _entry_bci = InvalidOSREntryBci;
}
void nmethod::log_state_change() const {
--- a/hotspot/src/share/vm/code/nmethod.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/code/nmethod.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -202,13 +202,6 @@
bool _oops_are_stale; // indicates that it's no longer safe to access oops section
#endif
- enum { in_use = 0, // executable nmethod
- not_entrant = 1, // marked for deoptimization but activations may still exist,
- // will be transformed to zombie when all activations are gone
- zombie = 2, // no activations exist, nmethod is ready for purge
- unloaded = 3 }; // there should be no activations, should not be called,
- // will be transformed to zombie immediately
-
jbyte _scavenge_root_state;
#if INCLUDE_RTM_OPT
@@ -431,6 +424,13 @@
address entry_point() const { return _entry_point; } // normal entry point
address verified_entry_point() const { return _verified_entry_point; } // if klass is correct
+ enum { in_use = 0, // executable nmethod
+ not_entrant = 1, // marked for deoptimization but activations may still exist,
+ // will be transformed to zombie when all activations are gone
+ zombie = 2, // no activations exist, nmethod is ready for purge
+ unloaded = 3 }; // there should be no activations, should not be called,
+ // will be transformed to zombie immediately
+
// flag accessing and manipulation
bool is_in_use() const { return _state == in_use; }
bool is_alive() const { return _state == in_use || _state == not_entrant; }
@@ -759,7 +759,7 @@
// support for code generation
static int verified_entry_point_offset() { return offset_of(nmethod, _verified_entry_point); }
static int osr_entry_point_offset() { return offset_of(nmethod, _osr_entry_point); }
- static int entry_bci_offset() { return offset_of(nmethod, _entry_bci); }
+ static int state_offset() { return offset_of(nmethod, _state); }
// RedefineClasses support. Mark metadata in nmethods as on_stack so that
// redefine classes doesn't purge it.
--- a/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -4737,7 +4737,7 @@
}
bool G1PrintRegionLivenessInfoClosure::doHeapRegion(HeapRegion* r) {
- const char* type = "";
+ const char* type = r->get_type_str();
HeapWord* bottom = r->bottom();
HeapWord* end = r->end();
size_t capacity_bytes = r->capacity();
@@ -4748,15 +4748,7 @@
size_t remset_bytes = r->rem_set()->mem_size();
size_t strong_code_roots_bytes = r->rem_set()->strong_code_roots_mem_size();
- if (r->used() == 0) {
- type = "FREE";
- } else if (r->is_survivor()) {
- type = "SURV";
- } else if (r->is_young()) {
- type = "EDEN";
- } else if (r->startsHumongous()) {
- type = "HUMS";
-
+ if (r->startsHumongous()) {
assert(_hum_used_bytes == 0 && _hum_capacity_bytes == 0 &&
_hum_prev_live_bytes == 0 && _hum_next_live_bytes == 0,
"they should have been zeroed after the last time we used them");
@@ -4769,12 +4761,9 @@
&prev_live_bytes, &next_live_bytes);
end = bottom + HeapRegion::GrainWords;
} else if (r->continuesHumongous()) {
- type = "HUMC";
get_hum_bytes(&used_bytes, &capacity_bytes,
&prev_live_bytes, &next_live_bytes);
assert(end == bottom + HeapRegion::GrainWords, "invariant");
- } else {
- type = "OLD";
}
_total_used_bytes += used_bytes;
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -211,7 +211,10 @@
HeapRegion* next = list->get_next_young_region();
list->set_next_young_region(NULL);
list->uninstall_surv_rate_group();
- list->set_not_young();
+ // This is called before a Full GC and all the non-empty /
+ // non-humongous regions at the end of the Full GC will end up as
+ // old anyway.
+ list->set_old();
list = next;
}
}
@@ -370,7 +373,7 @@
if (curr == NULL)
gclog_or_tty->print_cr(" empty");
while (curr != NULL) {
- gclog_or_tty->print_cr(" "HR_FORMAT", P: "PTR_FORMAT "N: "PTR_FORMAT", age: %4d",
+ gclog_or_tty->print_cr(" "HR_FORMAT", P: "PTR_FORMAT ", N: "PTR_FORMAT", age: %4d",
HR_FORMAT_PARAMS(curr),
curr->prev_top_at_mark_start(),
curr->next_top_at_mark_start(),
@@ -802,6 +805,7 @@
#ifdef ASSERT
for (uint i = first; i < first + obj_regions; ++i) {
HeapRegion* hr = region_at(i);
+ assert(hr->is_free(), "sanity");
assert(hr->is_empty(), "sanity");
assert(is_on_master_free_list(hr), "sanity");
}
@@ -1225,21 +1229,21 @@
public:
bool doHeapRegion(HeapRegion* hr) {
assert(!hr->is_young(), "not expecting to find young regions");
- // We only generate output for non-empty regions.
- if (!hr->is_empty()) {
- if (!hr->isHumongous()) {
- _hr_printer->post_compaction(hr, G1HRPrinter::Old);
- } else if (hr->startsHumongous()) {
- if (hr->region_num() == 1) {
- // single humongous region
- _hr_printer->post_compaction(hr, G1HRPrinter::SingleHumongous);
- } else {
- _hr_printer->post_compaction(hr, G1HRPrinter::StartsHumongous);
- }
+ if (hr->is_free()) {
+ // We only generate output for non-empty regions.
+ } else if (hr->startsHumongous()) {
+ if (hr->region_num() == 1) {
+ // single humongous region
+ _hr_printer->post_compaction(hr, G1HRPrinter::SingleHumongous);
} else {
- assert(hr->continuesHumongous(), "only way to get here");
- _hr_printer->post_compaction(hr, G1HRPrinter::ContinuesHumongous);
+ _hr_printer->post_compaction(hr, G1HRPrinter::StartsHumongous);
}
+ } else if (hr->continuesHumongous()) {
+ _hr_printer->post_compaction(hr, G1HRPrinter::ContinuesHumongous);
+ } else if (hr->is_old()) {
+ _hr_printer->post_compaction(hr, G1HRPrinter::Old);
+ } else {
+ ShouldNotReachHere();
}
return false;
}
@@ -1477,9 +1481,7 @@
// Discard all rset updates
JavaThread::dirty_card_queue_set().abandon_logs();
- assert(!G1DeferredRSUpdate
- || (G1DeferredRSUpdate &&
- (dirty_card_queue_set().completed_buffers_num() == 0)), "Should not be any");
+ assert(dirty_card_queue_set().completed_buffers_num() == 0, "DCQS should be empty");
_young_list->reset_sampled_info();
// At this point there should be no regions in the
@@ -2090,15 +2092,13 @@
concurrent_g1_refine()->red_zone(),
Shared_DirtyCardQ_lock);
- if (G1DeferredRSUpdate) {
- dirty_card_queue_set().initialize(NULL, // Should never be called by the Java code
- DirtyCardQ_CBL_mon,
- DirtyCardQ_FL_lock,
- -1, // never trigger processing
- -1, // no limit on length
- Shared_DirtyCardQ_lock,
- &JavaThread::dirty_card_queue_set());
- }
+ dirty_card_queue_set().initialize(NULL, // Should never be called by the Java code
+ DirtyCardQ_CBL_mon,
+ DirtyCardQ_FL_lock,
+ -1, // never trigger processing
+ -1, // no limit on length
+ Shared_DirtyCardQ_lock,
+ &JavaThread::dirty_card_queue_set());
// Initialize the card queue set used to hold cards containing
// references into the collection set.
@@ -2121,8 +2121,8 @@
// We'll re-use the same region whether the alloc region will
// require BOT updates or not and, if it doesn't, then a non-young
// region will complain that it cannot support allocations without
- // BOT updates. So we'll tag the dummy region as young to avoid that.
- dummy_region->set_young();
+ // BOT updates. So we'll tag the dummy region as eden to avoid that.
+ dummy_region->set_eden();
// Make sure it's full.
dummy_region->set_top(dummy_region->end());
G1AllocRegion::setup(this, dummy_region);
@@ -4031,14 +4031,6 @@
if (_hr_printer.is_active()) {
HeapRegion* hr = g1_policy()->collection_set();
while (hr != NULL) {
- G1HRPrinter::RegionType type;
- if (!hr->is_young()) {
- type = G1HRPrinter::Old;
- } else if (hr->is_survivor()) {
- type = G1HRPrinter::Survivor;
- } else {
- type = G1HRPrinter::Eden;
- }
_hr_printer.cset(hr);
hr = hr->next_in_collection_set();
}
@@ -5393,7 +5385,6 @@
};
void G1CollectedHeap::redirty_logged_cards() {
- guarantee(G1DeferredRSUpdate, "Must only be called when using deferred RS updates.");
double redirty_logged_cards_start = os::elapsedTime();
uint n_workers = (G1CollectedHeap::use_parallel_gc_threads() ?
@@ -5448,9 +5439,10 @@
void do_oop(narrowOop* p) { guarantee(false, "Not needed"); }
void do_oop(oop* p) {
oop obj = *p;
+ assert(obj != NULL, "the caller should have filtered out NULL values");
G1CollectedHeap::in_cset_state_t cset_state = _g1->in_cset_state(obj);
- if (obj == NULL || cset_state == G1CollectedHeap::InNeither) {
+ if (cset_state == G1CollectedHeap::InNeither) {
return;
}
if (cset_state == G1CollectedHeap::InCSet) {
@@ -6052,9 +6044,7 @@
// RSets.
enqueue_discovered_references(n_workers);
- if (G1DeferredRSUpdate) {
- redirty_logged_cards();
- }
+ redirty_logged_cards();
COMPILER2_PRESENT(DerivedPointerTable::update_pointers());
}
@@ -6062,7 +6052,7 @@
FreeRegionList* free_list,
bool par,
bool locked) {
- assert(!hr->isHumongous(), "this is only for non-humongous regions");
+ assert(!hr->is_free(), "the region should not be free");
assert(!hr->is_empty(), "the region should not be empty");
assert(_hrm.is_available(hr->hrm_index()), "region should be committed");
assert(free_list != NULL, "pre-condition");
@@ -6092,14 +6082,14 @@
// We need to read this before we make the region non-humongous,
// otherwise the information will be gone.
uint last_index = hr->last_hc_index();
- hr->set_notHumongous();
+ hr->clear_humongous();
free_region(hr, free_list, par);
uint i = hr->hrm_index() + 1;
while (i < last_index) {
HeapRegion* curr_hr = region_at(i);
assert(curr_hr->continuesHumongous(), "invariant");
- curr_hr->set_notHumongous();
+ curr_hr->clear_humongous();
free_region(curr_hr, free_list, par);
i += 1;
}
@@ -6407,9 +6397,9 @@
if (cur->is_young()) {
cur->set_young_index_in_cset(-1);
}
- cur->set_not_young();
cur->set_evacuation_failed(false);
// The region is now considered to be old.
+ cur->set_old();
_old_set.add(cur);
evacuation_info.increment_collectionset_used_after(cur->used());
}
@@ -6696,16 +6686,15 @@
TearDownRegionSetsClosure(HeapRegionSet* old_set) : _old_set(old_set) { }
bool doHeapRegion(HeapRegion* r) {
- if (r->is_empty()) {
- // We ignore empty regions, we'll empty the free list afterwards
- } else if (r->is_young()) {
- // We ignore young regions, we'll empty the young list afterwards
- } else if (r->isHumongous()) {
+ if (r->is_old()) {
+ _old_set->remove(r);
+ } else {
+ // We ignore free regions, we'll empty the free list afterwards.
+ // We ignore young regions, we'll empty the young list afterwards.
// We ignore humongous regions, we're not tearing down the
- // humongous region set
- } else {
- // The rest should be old
- _old_set->remove(r);
+ // humongous regions set.
+ assert(r->is_free() || r->is_young() || r->isHumongous(),
+ "it cannot be another type");
}
return false;
}
@@ -6755,6 +6744,7 @@
if (r->is_empty()) {
// Add free regions to the free list
+ r->set_free();
_hrm->insert_into_free_list(r);
} else if (!_free_list_only) {
assert(!r->is_young(), "we should not come across young regions");
@@ -6762,7 +6752,11 @@
if (r->isHumongous()) {
// We ignore humongous regions, we left the humongous set unchanged
} else {
- // The rest should be old, add them to the old set
+ // Objects that were compacted would have ended up on regions
+ // that were previously old or free.
+ assert(r->is_free() || r->is_old(), "invariant");
+ // We now consider them old, so register as such.
+ r->set_old();
_old_set->add(r);
}
_total_used += r->used();
@@ -6829,7 +6823,7 @@
void G1CollectedHeap::retire_mutator_alloc_region(HeapRegion* alloc_region,
size_t allocated_bytes) {
assert_heap_locked_or_at_safepoint(true /* should_be_vm_thread */);
- assert(alloc_region->is_young(), "all mutator alloc regions should be young");
+ assert(alloc_region->is_eden(), "all mutator alloc regions should be eden");
g1_policy()->add_region_to_incremental_cset_lhs(alloc_region);
_summary_bytes_used += allocated_bytes;
@@ -6888,6 +6882,7 @@
_hr_printer.alloc(new_alloc_region, G1HRPrinter::Survivor);
check_bitmaps("Survivor Region Allocation", new_alloc_region);
} else {
+ new_alloc_region->set_old();
_hr_printer.alloc(new_alloc_region, G1HRPrinter::Old);
check_bitmaps("Old Region Allocation", new_alloc_region);
}
@@ -6999,9 +6994,11 @@
} else if (hr->is_empty()) {
assert(_hrm->is_free(hr), err_msg("Heap region %u is empty but not on the free list.", hr->hrm_index()));
_free_count.increment(1u, hr->capacity());
- } else {
+ } else if (hr->is_old()) {
assert(hr->containing_set() == _old_set, err_msg("Heap region %u is old but not in the old set.", hr->hrm_index()));
_old_count.increment(1u, hr->capacity());
+ } else {
+ ShouldNotReachHere();
}
return false;
}
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -1665,7 +1665,7 @@
// Add the heap region at the head of the non-incremental collection set
void G1CollectorPolicy::add_old_region_to_cset(HeapRegion* hr) {
assert(_inc_cset_build_state == Active, "Precondition");
- assert(!hr->is_young(), "non-incremental add of young region");
+ assert(hr->is_old(), "the region should be old");
assert(!hr->in_collection_set(), "should not already be in the CSet");
hr->set_in_collection_set(true);
@@ -1811,7 +1811,7 @@
// Add the region at the RHS of the incremental cset
void G1CollectorPolicy::add_region_to_incremental_cset_rhs(HeapRegion* hr) {
// We should only ever be appending survivors at the end of a pause
- assert( hr->is_survivor(), "Logic");
+ assert(hr->is_survivor(), "Logic");
// Do the 'common' stuff
add_region_to_incremental_cset_common(hr);
@@ -1829,7 +1829,7 @@
// Add the region to the LHS of the incremental cset
void G1CollectorPolicy::add_region_to_incremental_cset_lhs(HeapRegion* hr) {
// Survivors should be added to the RHS at the end of a pause
- assert(!hr->is_survivor(), "Logic");
+ assert(hr->is_eden(), "Logic");
// Do the 'common' stuff
add_region_to_incremental_cset_common(hr);
@@ -1989,7 +1989,11 @@
HeapRegion* hr = young_list->first_survivor_region();
while (hr != NULL) {
assert(hr->is_survivor(), "badly formed young list");
- hr->set_young();
+ // There is a convention that all the young regions in the CSet
+ // are tagged as "eden", so we do this for the survivors here. We
+ // use the special set_eden_pre_gc() as it doesn't check that the
+ // region is free (which is not the case here).
+ hr->set_eden_pre_gc();
hr = hr->get_next_young_region();
}
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -299,13 +299,13 @@
// Accessors
void set_region_eden(HeapRegion* hr, int young_index_in_cset) {
- hr->set_young();
+ hr->set_eden();
hr->install_surv_rate_group(_short_lived_surv_rate_group);
hr->set_young_index_in_cset(young_index_in_cset);
}
void set_region_survivor(HeapRegion* hr, int young_index_in_cset) {
- assert(hr->is_young() && hr->is_survivor(), "pre-condition");
+ assert(hr->is_survivor(), "pre-condition");
hr->install_surv_rate_group(_survivor_surv_rate_group);
hr->set_young_index_in_cset(young_index_in_cset);
}
--- a/hotspot/src/share/vm/gc_implementation/g1/g1EvacFailure.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1EvacFailure.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -176,15 +176,17 @@
class RemoveSelfForwardPtrHRClosure: public HeapRegionClosure {
G1CollectedHeap* _g1h;
ConcurrentMark* _cm;
- OopsInHeapRegionClosure *_update_rset_cl;
uint _worker_id;
+ DirtyCardQueue _dcq;
+ UpdateRSetDeferred _update_rset_cl;
+
public:
RemoveSelfForwardPtrHRClosure(G1CollectedHeap* g1h,
- OopsInHeapRegionClosure* update_rset_cl,
uint worker_id) :
- _g1h(g1h), _update_rset_cl(update_rset_cl),
- _worker_id(worker_id), _cm(_g1h->concurrent_mark()) { }
+ _g1h(g1h), _dcq(&g1h->dirty_card_queue_set()), _update_rset_cl(g1h, &_dcq),
+ _worker_id(worker_id), _cm(_g1h->concurrent_mark()) {
+ }
bool doHeapRegion(HeapRegion *hr) {
bool during_initial_mark = _g1h->g1_policy()->during_initial_mark_pause();
@@ -195,7 +197,7 @@
if (hr->claimHeapRegion(HeapRegion::ParEvacFailureClaimValue)) {
if (hr->evacuation_failed()) {
- RemoveSelfForwardPtrObjClosure rspc(_g1h, _cm, hr, _update_rset_cl,
+ RemoveSelfForwardPtrObjClosure rspc(_g1h, _cm, hr, &_update_rset_cl,
during_initial_mark,
during_conc_mark,
_worker_id);
@@ -214,7 +216,7 @@
// whenever this might be required in the future.
hr->rem_set()->reset_for_par_iteration();
hr->reset_bot();
- _update_rset_cl->set_region(hr);
+ _update_rset_cl.set_region(hr);
hr->object_iterate(&rspc);
hr->rem_set()->clean_strong_code_roots(hr);
@@ -238,16 +240,7 @@
_g1h(g1h) { }
void work(uint worker_id) {
- UpdateRSetImmediate immediate_update(_g1h->g1_rem_set());
- DirtyCardQueue dcq(&_g1h->dirty_card_queue_set());
- UpdateRSetDeferred deferred_update(_g1h, &dcq);
-
- OopsInHeapRegionClosure *update_rset_cl = &deferred_update;
- if (!G1DeferredRSUpdate) {
- update_rset_cl = &immediate_update;
- }
-
- RemoveSelfForwardPtrHRClosure rsfp_cl(_g1h, update_rset_cl, worker_id);
+ RemoveSelfForwardPtrHRClosure rsfp_cl(_g1h, worker_id);
HeapRegion* hr = _g1h->start_cset_region_for_worker(worker_id);
_g1h->collection_set_iterate_from(hr, &rsfp_cl);
--- a/hotspot/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -237,10 +237,8 @@
_last_gc_worker_times_ms.verify();
_last_gc_worker_other_times_ms.verify();
- if (G1DeferredRSUpdate) {
- _last_redirty_logged_cards_time_ms.verify();
- _last_redirty_logged_cards_processed_cards.verify();
- }
+ _last_redirty_logged_cards_time_ms.verify();
+ _last_redirty_logged_cards_processed_cards.verify();
}
void G1GCPhaseTimes::note_string_dedup_fixup_start() {
@@ -352,12 +350,10 @@
_recorded_non_young_cset_choice_time_ms));
print_stats(2, "Ref Proc", _cur_ref_proc_time_ms);
print_stats(2, "Ref Enq", _cur_ref_enq_time_ms);
- if (G1DeferredRSUpdate) {
- print_stats(2, "Redirty Cards", _recorded_redirty_logged_cards_time_ms);
- if (G1Log::finest()) {
- _last_redirty_logged_cards_time_ms.print(3, "Parallel Redirty");
- _last_redirty_logged_cards_processed_cards.print(3, "Redirtied Cards");
- }
+ print_stats(2, "Redirty Cards", _recorded_redirty_logged_cards_time_ms);
+ if (G1Log::finest()) {
+ _last_redirty_logged_cards_time_ms.print(3, "Parallel Redirty");
+ _last_redirty_logged_cards_processed_cards.print(3, "Redirtied Cards");
}
if (G1ReclaimDeadHumongousObjectsAtYoungGC) {
print_stats(2, "Humongous Reclaim", _cur_fast_reclaim_humongous_time_ms);
--- a/hotspot/src/share/vm/gc_implementation/g1/g1HotCardCache.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1HotCardCache.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -27,7 +27,6 @@
#include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
#include "gc_implementation/g1/g1HotCardCache.hpp"
#include "gc_implementation/g1/g1RemSet.hpp"
-#include "gc_implementation/g1/heapRegion.hpp"
#include "runtime/atomic.inline.hpp"
G1HotCardCache::G1HotCardCache(G1CollectedHeap *g1h):
@@ -136,7 +135,6 @@
}
void G1HotCardCache::reset_card_counts(HeapRegion* hr) {
- assert(!hr->isHumongous(), "Should have been cleared");
_card_counts.clear_region(hr);
}
--- a/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -84,20 +84,6 @@
DirtyCardQueue& dirty_card_queue() { return _dcq; }
G1SATBCardTableModRefBS* ctbs() { return _ct_bs; }
- template <class T> inline void immediate_rs_update(HeapRegion* from, T* p, int tid);
-
- template <class T> void deferred_rs_update(HeapRegion* from, T* p, int tid) {
- // If the new value of the field points to the same region or
- // is the to-space, we don't need to include it in the Rset updates.
- if (!from->is_in_reserved(oopDesc::load_decode_heap_oop(p)) && !from->is_survivor()) {
- size_t card_index = ctbs()->index_for(p);
- // If the card hasn't been added to the buffer, do it.
- if (ctbs()->mark_card_deferred(card_index)) {
- dirty_card_queue().enqueue((jbyte*)ctbs()->byte_for_index(card_index));
- }
- }
- }
-
public:
G1ParScanThreadState(G1CollectedHeap* g1h, uint queue_num, ReferenceProcessor* rp);
~G1ParScanThreadState();
@@ -124,8 +110,17 @@
_refs->push(ref);
}
- template <class T> inline void update_rs(HeapRegion* from, T* p, int tid);
-
+ template <class T> void update_rs(HeapRegion* from, T* p, int tid) {
+ // If the new value of the field points to the same region or
+ // is the to-space, we don't need to include it in the Rset updates.
+ if (!from->is_in_reserved(oopDesc::load_decode_heap_oop(p)) && !from->is_survivor()) {
+ size_t card_index = ctbs()->index_for(p);
+ // If the card hasn't been added to the buffer, do it.
+ if (ctbs()->mark_card_deferred(card_index)) {
+ dirty_card_queue().enqueue((jbyte*)ctbs()->byte_for_index(card_index));
+ }
+ }
+ }
private:
inline HeapWord* allocate(GCAllocPurpose purpose, size_t word_sz);
--- a/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.inline.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.inline.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -29,20 +29,6 @@
#include "gc_implementation/g1/g1RemSet.inline.hpp"
#include "oops/oop.inline.hpp"
-template <class T> inline void G1ParScanThreadState::immediate_rs_update(HeapRegion* from, T* p, int tid) {
- if (!from->is_survivor()) {
- _g1_rem->par_write_ref(from, p, tid);
- }
-}
-
-template <class T> void G1ParScanThreadState::update_rs(HeapRegion* from, T* p, int tid) {
- if (G1DeferredRSUpdate) {
- deferred_rs_update(from, p, tid);
- } else {
- immediate_rs_update(from, p, tid);
- }
-}
-
template <class T> void G1ParScanThreadState::do_oop_evac(T* p, HeapRegion* from) {
assert(!oopDesc::is_null(oopDesc::load_decode_heap_oop(p)),
"Reference should not be NULL here as such are never pushed to the task queue.");
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -339,12 +339,8 @@
// are just discarded (there's no need to update the RSets of regions
// that were in the collection set - after the pause these regions
// are wholly 'free' of live objects. In the event of an evacuation
- // failure the cards/buffers in this queue set are:
- // * passed to the DirtyCardQueueSet that is used to manage deferred
- // RSet updates, or
- // * scanned for references that point into the collection set
- // and the RSet of the corresponding region in the collection set
- // is updated immediately.
+ // failure the cards/buffers in this queue set are passed to the
+ // DirtyCardQueueSet that is used to manage RSet updates
DirtyCardQueue into_cset_dcq(&_g1->into_cset_dirty_card_queue_set());
assert((ParallelGCThreads > 0) || worker_i == 0, "invariant");
@@ -358,7 +354,6 @@
void G1RemSet::prepare_for_oops_into_collection_set_do() {
cleanupHRRS();
- ConcurrentG1Refine* cg1r = _g1->concurrent_g1_refine();
_g1->set_refine_cte_cl_concurrency(false);
DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set();
dcqs.concatenate_logs();
@@ -371,66 +366,6 @@
_total_cards_scanned = 0;
}
-
-// This closure, applied to a DirtyCardQueueSet, is used to immediately
-// update the RSets for the regions in the CSet. For each card it iterates
-// through the oops which coincide with that card. It scans the reference
-// fields in each oop; when it finds an oop that points into the collection
-// set, the RSet for the region containing the referenced object is updated.
-class UpdateRSetCardTableEntryIntoCSetClosure: public CardTableEntryClosure {
- G1CollectedHeap* _g1;
- CardTableModRefBS* _ct_bs;
-public:
- UpdateRSetCardTableEntryIntoCSetClosure(G1CollectedHeap* g1,
- CardTableModRefBS* bs):
- _g1(g1), _ct_bs(bs)
- { }
-
- bool do_card_ptr(jbyte* card_ptr, uint worker_i) {
- // Construct the region representing the card.
- HeapWord* start = _ct_bs->addr_for(card_ptr);
- // And find the region containing it.
- HeapRegion* r = _g1->heap_region_containing(start);
-
- // Scan oops in the card looking for references into the collection set
- // Don't use addr_for(card_ptr + 1) which can ask for
- // a card beyond the heap. This is not safe without a perm
- // gen.
- HeapWord* end = start + CardTableModRefBS::card_size_in_words;
- MemRegion scanRegion(start, end);
-
- UpdateRSetImmediate update_rs_cl(_g1->g1_rem_set());
- FilterIntoCSClosure update_rs_cset_oop_cl(NULL, _g1, &update_rs_cl);
- FilterOutOfRegionClosure filter_then_update_rs_cset_oop_cl(r, &update_rs_cset_oop_cl);
-
- // We can pass false as the "filter_young" parameter here as:
- // * we should be in a STW pause,
- // * the DCQS to which this closure is applied is used to hold
- // references that point into the collection set from the prior
- // RSet updating,
- // * the post-write barrier shouldn't be logging updates to young
- // regions (but there is a situation where this can happen - see
- // the comment in G1RemSet::refine_card() below -
- // that should not be applicable here), and
- // * during actual RSet updating, the filtering of cards in young
- // regions in HeapRegion::oops_on_card_seq_iterate_careful is
- // employed.
- // As a result, when this closure is applied to "refs into cset"
- // DCQS, we shouldn't see any cards in young regions.
- update_rs_cl.set_region(r);
- HeapWord* stop_point =
- r->oops_on_card_seq_iterate_careful(scanRegion,
- &filter_then_update_rs_cset_oop_cl,
- false /* filter_young */,
- NULL /* card_ptr */);
-
- // Since this is performed in the event of an evacuation failure, we
- // we shouldn't see a non-null stop point
- assert(stop_point == NULL, "saw an unallocated region");
- return true;
- }
-};
-
void G1RemSet::cleanup_after_oops_into_collection_set_do() {
guarantee( _cards_scanned != NULL, "invariant" );
_total_cards_scanned = 0;
@@ -451,25 +386,10 @@
double restore_remembered_set_start = os::elapsedTime();
// Restore remembered sets for the regions pointing into the collection set.
- if (G1DeferredRSUpdate) {
- // If deferred RS updates are enabled then we just need to transfer
- // the completed buffers from (a) the DirtyCardQueueSet used to hold
- // cards that contain references that point into the collection set
- // to (b) the DCQS used to hold the deferred RS updates
- _g1->dirty_card_queue_set().merge_bufferlists(&into_cset_dcqs);
- } else {
-
- CardTableModRefBS* bs = (CardTableModRefBS*)_g1->barrier_set();
- UpdateRSetCardTableEntryIntoCSetClosure update_rs_cset_immediate(_g1, bs);
-
- int n_completed_buffers = 0;
- while (into_cset_dcqs.apply_closure_to_completed_buffer(&update_rs_cset_immediate,
- 0, 0, true)) {
- n_completed_buffers++;
- }
- assert(n_completed_buffers == into_cset_n_buffers, "missed some buffers");
- }
-
+ // We just need to transfer the completed buffers from the DirtyCardQueueSet
+ // used to hold cards that contain references that point into the collection set
+ // to the DCQS used to hold the deferred RS updates.
+ _g1->dirty_card_queue_set().merge_bufferlists(&into_cset_dcqs);
_g1->g1_policy()->phase_times()->record_evac_fail_restore_remsets((os::elapsedTime() - restore_remembered_set_start) * 1000.0);
}
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -193,18 +193,4 @@
bool apply_to_weak_ref_discovered_field() { return true; }
};
-class UpdateRSetImmediate: public OopsInHeapRegionClosure {
-private:
- G1RemSet* _g1_rem_set;
-
- template <class T> void do_oop_work(T* p);
-public:
- UpdateRSetImmediate(G1RemSet* rs) :
- _g1_rem_set(rs) {}
-
- virtual void do_oop(narrowOop* p) { do_oop_work(p); }
- virtual void do_oop( oop* p) { do_oop_work(p); }
-};
-
-
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_HPP
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -79,13 +79,4 @@
_rs->par_write_ref(_from, p, _worker_i);
}
-template <class T>
-inline void UpdateRSetImmediate::do_oop_work(T* p) {
- assert(_from->is_in_reserved(p), "paranoia");
- T heap_oop = oopDesc::load_heap_oop(p);
- if (!oopDesc::is_null(heap_oop) && !_from->is_survivor()) {
- _g1_rem_set->par_write_ref(_from, p, 0);
- }
-}
-
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSetSummary.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSetSummary.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -259,14 +259,16 @@
size_t code_root_elems = hrrs->strong_code_roots_list_length();
RegionTypeCounter* current = NULL;
- if (r->is_young()) {
+ if (r->is_free()) {
+ current = &_free;
+ } else if (r->is_young()) {
current = &_young;
} else if (r->isHumongous()) {
current = &_humonguous;
- } else if (r->is_empty()) {
- current = &_free;
+ } else if (r->is_old()) {
+ current = &_old;
} else {
- current = &_old;
+ ShouldNotReachHere();
}
current->add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems);
_all.add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems);
--- a/hotspot/src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -31,8 +31,6 @@
#include "oops/oop.inline.hpp"
#include "utilities/macros.hpp"
-#if INCLUDE_ALL_GCS
-
class DirtyCardQueueSet;
class G1SATBCardTableLoggingModRefBS;
@@ -180,7 +178,4 @@
void write_ref_array_work(MemRegion mr) { invalidate(mr); }
};
-
-#endif // INCLUDE_ALL_GCS
-
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1SATBCARDTABLEMODREFBS_HPP
--- a/hotspot/src/share/vm/gc_implementation/g1/g1_globals.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1_globals.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -108,9 +108,6 @@
develop(bool, G1RSBarrierRegionFilter, true, \
"If true, generate region filtering code in RS barrier") \
\
- develop(bool, G1DeferredRSUpdate, true, \
- "If true, use deferred RS updates") \
- \
develop(bool, G1RSLogCheckCardTable, false, \
"If true, verify that no dirty cards remain after RS log " \
"processing.") \
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -211,8 +211,6 @@
}
void HeapRegion::hr_clear(bool par, bool clear_space, bool locked) {
- assert(_humongous_type == NotHumongous,
- "we should have already filtered out humongous regions");
assert(_humongous_start_region == NULL,
"we should have already filtered out humongous regions");
assert(_end == _orig_end,
@@ -222,7 +220,7 @@
set_young_index_in_cset(-1);
uninstall_surv_rate_group();
- set_young_type(NotYoung);
+ set_free();
reset_pre_dummy_top();
if (!par) {
@@ -273,7 +271,7 @@
assert(top() == bottom(), "should be empty");
assert(bottom() <= new_top && new_top <= new_end, "pre-condition");
- _humongous_type = StartsHumongous;
+ _type.set_starts_humongous();
_humongous_start_region = this;
set_end(new_end);
@@ -287,11 +285,11 @@
assert(top() == bottom(), "should be empty");
assert(first_hr->startsHumongous(), "pre-condition");
- _humongous_type = ContinuesHumongous;
+ _type.set_continues_humongous();
_humongous_start_region = first_hr;
}
-void HeapRegion::set_notHumongous() {
+void HeapRegion::clear_humongous() {
assert(isHumongous(), "pre-condition");
if (startsHumongous()) {
@@ -307,7 +305,6 @@
}
assert(capacity() == HeapRegion::GrainBytes, "pre-condition");
- _humongous_type = NotHumongous;
_humongous_start_region = NULL;
}
@@ -327,12 +324,12 @@
MemRegion mr) :
G1OffsetTableContigSpace(sharedOffsetArray, mr),
_hrm_index(hrm_index),
- _humongous_type(NotHumongous), _humongous_start_region(NULL),
+ _humongous_start_region(NULL),
_in_collection_set(false),
_next_in_special_set(NULL), _orig_end(NULL),
_claimed(InitialClaimValue), _evacuation_failed(false),
_prev_marked_bytes(0), _next_marked_bytes(0), _gc_efficiency(0.0),
- _young_type(NotYoung), _next_young_region(NULL),
+ _next_young_region(NULL),
_next_dirty_cards_region(NULL), _next(NULL), _prev(NULL),
#ifdef ASSERT
_containing_set(NULL),
@@ -686,26 +683,11 @@
void HeapRegion::print() const { print_on(gclog_or_tty); }
void HeapRegion::print_on(outputStream* st) const {
- if (isHumongous()) {
- if (startsHumongous())
- st->print(" HS");
- else
- st->print(" HC");
- } else {
- st->print(" ");
- }
+ st->print(" %2s", get_short_type_str());
if (in_collection_set())
st->print(" CS");
else
st->print(" ");
- if (is_young())
- st->print(is_survivor() ? " SU" : " Y ");
- else
- st->print(" ");
- if (is_empty())
- st->print(" F");
- else
- st->print(" ");
st->print(" TS %5d", _gc_time_stamp);
st->print(" PTAMS "PTR_FORMAT" NTAMS "PTR_FORMAT,
prev_top_at_mark_start(), next_top_at_mark_start());
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -27,6 +27,7 @@
#include "gc_implementation/g1/g1BlockOffsetTable.hpp"
#include "gc_implementation/g1/g1_specialized_oop_closures.hpp"
+#include "gc_implementation/g1/heapRegionType.hpp"
#include "gc_implementation/g1/survRateGroup.hpp"
#include "gc_implementation/shared/ageTable.hpp"
#include "gc_implementation/shared/spaceDecorator.hpp"
@@ -34,8 +35,6 @@
#include "memory/watermark.hpp"
#include "utilities/macros.hpp"
-#if INCLUDE_ALL_GCS
-
// A HeapRegion is the smallest piece of a G1CollectedHeap that
// can be collected independently.
@@ -55,10 +54,7 @@
#define HR_FORMAT "%u:(%s)["PTR_FORMAT","PTR_FORMAT","PTR_FORMAT"]"
#define HR_FORMAT_PARAMS(_hr_) \
(_hr_)->hrm_index(), \
- (_hr_)->is_survivor() ? "S" : (_hr_)->is_young() ? "E" : \
- (_hr_)->startsHumongous() ? "HS" : \
- (_hr_)->continuesHumongous() ? "HC" : \
- !(_hr_)->is_empty() ? "O" : "F", \
+ (_hr_)->get_short_type_str(), \
p2i((_hr_)->bottom()), p2i((_hr_)->top()), p2i((_hr_)->end())
// sentinel value for hrm_index
@@ -215,12 +211,6 @@
friend class VMStructs;
private:
- enum HumongousType {
- NotHumongous = 0,
- StartsHumongous,
- ContinuesHumongous
- };
-
// The remembered set for this region.
// (Might want to make this "inline" later, to avoid some alloc failure
// issues.)
@@ -232,7 +222,8 @@
// The index of this region in the heap region sequence.
uint _hrm_index;
- HumongousType _humongous_type;
+ HeapRegionType _type;
+
// For a humongous region, region in which it starts.
HeapRegion* _humongous_start_region;
// For the start region of a humongous sequence, it's original end().
@@ -274,13 +265,6 @@
// The calculated GC efficiency of the region.
double _gc_efficiency;
- enum YoungType {
- NotYoung, // a region is not young
- Young, // a region is young
- Survivor // a region is young and it contains survivors
- };
-
- volatile YoungType _young_type;
int _young_index_in_cset;
SurvRateGroup* _surv_rate_group;
int _age_index;
@@ -305,12 +289,6 @@
_next_top_at_mark_start = bot;
}
- void set_young_type(YoungType new_type) {
- //assert(_young_type != new_type, "setting the same type" );
- // TODO: add more assertions here
- _young_type = new_type;
- }
-
// Cached attributes used in the collection set policy information
// The RSet length that was added to the total value
@@ -430,9 +408,21 @@
_prev_marked_bytes = _next_marked_bytes = 0;
}
- bool isHumongous() const { return _humongous_type != NotHumongous; }
- bool startsHumongous() const { return _humongous_type == StartsHumongous; }
- bool continuesHumongous() const { return _humongous_type == ContinuesHumongous; }
+ const char* get_type_str() const { return _type.get_str(); }
+ const char* get_short_type_str() const { return _type.get_short_str(); }
+
+ bool is_free() const { return _type.is_free(); }
+
+ bool is_young() const { return _type.is_young(); }
+ bool is_eden() const { return _type.is_eden(); }
+ bool is_survivor() const { return _type.is_survivor(); }
+
+ bool isHumongous() const { return _type.is_humongous(); }
+ bool startsHumongous() const { return _type.is_starts_humongous(); }
+ bool continuesHumongous() const { return _type.is_continues_humongous(); }
+
+ bool is_old() const { return _type.is_old(); }
+
// For a humongous region, region in which it starts.
HeapRegion* humongous_start_region() const {
return _humongous_start_region;
@@ -496,7 +486,7 @@
void set_continuesHumongous(HeapRegion* first_hr);
// Unsets the humongous-related fields on the region.
- void set_notHumongous();
+ void clear_humongous();
// If the region has a remembered set, return a pointer to it.
HeapRegionRemSet* rem_set() const {
@@ -623,9 +613,6 @@
void calc_gc_efficiency(void);
double gc_efficiency() { return _gc_efficiency;}
- bool is_young() const { return _young_type != NotYoung; }
- bool is_survivor() const { return _young_type == Survivor; }
-
int young_index_in_cset() const { return _young_index_in_cset; }
void set_young_index_in_cset(int index) {
assert( (index == -1) || is_young(), "pre-condition" );
@@ -677,11 +664,13 @@
}
}
- void set_young() { set_young_type(Young); }
+ void set_free() { _type.set_free(); }
- void set_survivor() { set_young_type(Survivor); }
+ void set_eden() { _type.set_eden(); }
+ void set_eden_pre_gc() { _type.set_eden_pre_gc(); }
+ void set_survivor() { _type.set_survivor(); }
- void set_not_young() { set_young_type(NotYoung); }
+ void set_old() { _type.set_old(); }
// Determine if an object has been allocated since the last
// mark performed by the collector. This returns true iff the object
@@ -809,6 +798,4 @@
bool complete() { return _complete; }
};
-#endif // INCLUDE_ALL_GCS
-
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGION_HPP
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -42,7 +42,9 @@
assert(hr->containing_set() == this, err_msg("Inconsistent containing set for %u", hr->hrm_index()));
assert(!hr->is_young(), err_msg("Adding young region %u", hr->hrm_index())); // currently we don't use these sets for young regions
assert(hr->isHumongous() == regions_humongous(), err_msg("Wrong humongous state for region %u and set %s", hr->hrm_index(), name()));
- assert(hr->is_empty() == regions_empty(), err_msg("Wrong empty state for region %u and set %s", hr->hrm_index(), name()));
+ assert(hr->is_free() == regions_free(), err_msg("Wrong free state for region %u and set %s", hr->hrm_index(), name()));
+ assert(!hr->is_free() || hr->is_empty(), err_msg("Free region %u is not empty for set %s", hr->hrm_index(), name()));
+ assert(!hr->is_empty() || hr->is_free(), err_msg("Empty region %u is not free for set %s", hr->hrm_index(), name()));
assert(hr->rem_set()->verify_ready_for_par_iteration(), err_msg("Wrong iteration state %u", hr->hrm_index()));
}
#endif
@@ -85,16 +87,16 @@
out->print_cr("Set: %s ("PTR_FORMAT")", name(), this);
out->print_cr(" Region Assumptions");
out->print_cr(" humongous : %s", BOOL_TO_STR(regions_humongous()));
- out->print_cr(" empty : %s", BOOL_TO_STR(regions_empty()));
+ out->print_cr(" free : %s", BOOL_TO_STR(regions_free()));
out->print_cr(" Attributes");
out->print_cr(" length : %14u", length());
out->print_cr(" total capacity : "SIZE_FORMAT_W(14)" bytes",
total_capacity_bytes());
}
-HeapRegionSetBase::HeapRegionSetBase(const char* name, bool humongous, bool empty, HRSMtSafeChecker* mt_safety_checker)
+HeapRegionSetBase::HeapRegionSetBase(const char* name, bool humongous, bool free, HRSMtSafeChecker* mt_safety_checker)
: _name(name), _verify_in_progress(false),
- _is_humongous(humongous), _is_empty(empty), _mt_safety_checker(mt_safety_checker),
+ _is_humongous(humongous), _is_free(free), _mt_safety_checker(mt_safety_checker),
_count()
{ }
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -81,7 +81,7 @@
friend class VMStructs;
private:
bool _is_humongous;
- bool _is_empty;
+ bool _is_free;
HRSMtSafeChecker* _mt_safety_checker;
protected:
@@ -102,9 +102,9 @@
// not. Only used during verification.
bool regions_humongous() { return _is_humongous; }
- // Indicates whether all regions in the set should be empty or
+ // Indicates whether all regions in the set should be free or
// not. Only used during verification.
- bool regions_empty() { return _is_empty; }
+ bool regions_free() { return _is_free; }
void check_mt_safety() {
if (_mt_safety_checker != NULL) {
@@ -114,7 +114,7 @@
virtual void fill_in_ext_msg_extra(hrs_ext_msg* msg) { }
- HeapRegionSetBase(const char* name, bool humongous, bool empty, HRSMtSafeChecker* mt_safety_checker);
+ HeapRegionSetBase(const char* name, bool humongous, bool free, HRSMtSafeChecker* mt_safety_checker);
public:
const char* name() { return _name; }
@@ -171,7 +171,7 @@
do { \
assert(((_set1_)->regions_humongous() == \
(_set2_)->regions_humongous()) && \
- ((_set1_)->regions_empty() == (_set2_)->regions_empty()), \
+ ((_set1_)->regions_free() == (_set2_)->regions_free()), \
hrs_err_msg("the contents of set %s and set %s should match", \
(_set1_)->name(), (_set2_)->name())); \
} while (0)
@@ -184,7 +184,7 @@
class HeapRegionSet : public HeapRegionSetBase {
public:
HeapRegionSet(const char* name, bool humongous, HRSMtSafeChecker* mt_safety_checker):
- HeapRegionSetBase(name, humongous, false /* empty */, mt_safety_checker) { }
+ HeapRegionSetBase(name, humongous, false /* free */, mt_safety_checker) { }
void bulk_remove(const HeapRegionSetCount& removed) {
_count.decrement(removed.length(), removed.capacity());
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionType.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "gc_implementation/g1/heapRegionType.hpp"
+
+bool HeapRegionType::is_valid(Tag tag) {
+ switch (tag) {
+ case FreeTag:
+ case EdenTag:
+ case SurvTag:
+ case HumStartsTag:
+ case HumContTag:
+ case OldTag:
+ return true;
+ }
+ return false;
+}
+
+const char* HeapRegionType::get_str() const {
+ hrt_assert_is_valid(_tag);
+ switch (_tag) {
+ case FreeTag: return "FREE";
+ case EdenTag: return "EDEN";
+ case SurvTag: return "SURV";
+ case HumStartsTag: return "HUMS";
+ case HumContTag: return "HUMC";
+ case OldTag: return "OLD";
+ }
+ ShouldNotReachHere();
+ // keep some compilers happy
+ return NULL;
+}
+
+const char* HeapRegionType::get_short_str() const {
+ hrt_assert_is_valid(_tag);
+ switch (_tag) {
+ case FreeTag: return "F";
+ case EdenTag: return "E";
+ case SurvTag: return "S";
+ case HumStartsTag: return "HS";
+ case HumContTag: return "HC";
+ case OldTag: return "O";
+ }
+ ShouldNotReachHere();
+ // keep some compilers happy
+ return NULL;
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionType.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONTYPE_HPP
+#define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONTYPE_HPP
+
+#include "memory/allocation.hpp"
+
+#define hrt_assert_is_valid(tag) \
+ assert(is_valid((tag)), err_msg("invalid HR type: %u", (uint) (tag)))
+
+class HeapRegionType VALUE_OBJ_CLASS_SPEC {
+private:
+ // We encode the value of the heap region type so the generation can be
+ // determined quickly. The tag is split into two parts:
+ //
+ // major type (young, humongous) : top N-1 bits
+ // minor type (eden / survivor, starts / cont hum, etc.) : bottom 1 bit
+ //
+ // If there's need to increase the number of minor types in the
+ // future, we'll have to increase the size of the latter and hence
+ // decrease the size of the former.
+ //
+ // 0000 0 [ 0] Free
+ //
+ // 0001 0 Young Mask
+ // 0001 0 [ 2] Eden
+ // 0001 1 [ 3] Survivor
+ //
+ // 0010 0 Humongous Mask
+ // 0010 0 [ 4] Humongous Starts
+ // 0010 1 [ 5] Humongous Continues
+ //
+ // 01000 [ 8] Old
+ typedef enum {
+ FreeTag = 0,
+
+ YoungMask = 2,
+ EdenTag = YoungMask,
+ SurvTag = YoungMask + 1,
+
+ HumMask = 4,
+ HumStartsTag = HumMask,
+ HumContTag = HumMask + 1,
+
+ OldTag = 8
+ } Tag;
+
+ volatile Tag _tag;
+
+ static bool is_valid(Tag tag);
+
+ Tag get() const {
+ hrt_assert_is_valid(_tag);
+ return _tag;
+ }
+
+ // Sets the type to 'tag'.
+ void set(Tag tag) {
+ hrt_assert_is_valid(tag);
+ hrt_assert_is_valid(_tag);
+ _tag = tag;
+ }
+
+ // Sets the type to 'tag', expecting the type to be 'before'. This
+ // is available for when we want to add sanity checking to the type
+ // transition.
+ void set_from(Tag tag, Tag before) {
+ hrt_assert_is_valid(tag);
+ hrt_assert_is_valid(before);
+ hrt_assert_is_valid(_tag);
+ assert(_tag == before,
+ err_msg("HR tag: %u, expected: %u new tag; %u", _tag, before, tag));
+ _tag = tag;
+ }
+
+public:
+ // Queries
+
+ bool is_free() const { return get() == FreeTag; }
+
+ bool is_young() const { return (get() & YoungMask) != 0; }
+ bool is_eden() const { return get() == EdenTag; }
+ bool is_survivor() const { return get() == SurvTag; }
+
+ bool is_humongous() const { return (get() & HumMask) != 0; }
+ bool is_starts_humongous() const { return get() == HumStartsTag; }
+ bool is_continues_humongous() const { return get() == HumContTag; }
+
+ bool is_old() const { return get() == OldTag; }
+
+ // Setters
+
+ void set_free() { set(FreeTag); }
+
+ void set_eden() { set_from(EdenTag, FreeTag); }
+ void set_eden_pre_gc() { set_from(EdenTag, SurvTag); }
+ void set_survivor() { set_from(SurvTag, FreeTag); }
+
+ void set_starts_humongous() { set_from(HumStartsTag, FreeTag); }
+ void set_continues_humongous() { set_from(HumContTag, FreeTag); }
+
+ void set_old() { set(OldTag); }
+
+ // Misc
+
+ const char* get_str() const;
+ const char* get_short_str() const;
+
+ HeapRegionType() : _tag(FreeTag) { hrt_assert_is_valid(_tag); }
+};
+
+#endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONTYPE_HPP
--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/generationSizer.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/generationSizer.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -66,9 +66,10 @@
void GenerationSizer::initialize_size_info() {
trace_gen_sizes("ps heap raw");
- const size_t page_sz = os::page_size_for_region(_min_heap_byte_size,
- _max_heap_byte_size,
- 8);
+ const size_t max_page_sz = os::page_size_for_region(_max_heap_byte_size, 8);
+ const size_t min_pages = 4; // 1 for eden + 1 for each survivor + 1 for old
+ const size_t min_page_sz = os::page_size_for_region(_min_heap_byte_size, min_pages);
+ const size_t page_sz = MIN2(max_page_sz, min_page_sz);
// Can a page size be something else than a power of two?
assert(is_power_of_2((intptr_t)page_sz), "must be a power of 2");
--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -41,7 +41,7 @@
const size_t words = bits / BitsPerWord;
const size_t raw_bytes = words * sizeof(idx_t);
- const size_t page_sz = os::page_size_for_region(raw_bytes, raw_bytes, 10);
+ const size_t page_sz = os::page_size_for_region(raw_bytes, 10);
const size_t granularity = os::vm_allocation_granularity();
_reserved_byte_size = align_size_up(raw_bytes, MAX2(page_sz, granularity));
--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -403,7 +403,7 @@
ParallelCompactData::create_vspace(size_t count, size_t element_size)
{
const size_t raw_bytes = count * element_size;
- const size_t page_sz = os::page_size_for_region(raw_bytes, raw_bytes, 10);
+ const size_t page_sz = os::page_size_for_region(raw_bytes, 10);
const size_t granularity = os::vm_allocation_granularity();
_reserved_byte_size = align_size_up(raw_bytes, MAX2(page_sz, granularity));
--- a/hotspot/src/share/vm/interpreter/bytecodeInterpreter.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/interpreter/bytecodeInterpreter.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -330,7 +330,7 @@
if (do_OSR) { \
nmethod* osr_nmethod; \
OSR_REQUEST(osr_nmethod, branch_pc); \
- if (osr_nmethod != NULL && osr_nmethod->osr_entry_bci() != InvalidOSREntryBci) { \
+ if (osr_nmethod != NULL && osr_nmethod->is_in_use()) { \
intptr_t* buf; \
/* Call OSR migration with last java frame only, no checks. */ \
CALL_VM_NAKED_LJF(buf=SharedRuntime::OSR_migration_begin(THREAD)); \
--- a/hotspot/src/share/vm/memory/heap.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/memory/heap.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -98,9 +98,13 @@
_log2_segment_size = exact_log2(segment_size);
// Reserve and initialize space for _memory.
- const size_t page_size = os::can_execute_large_page_memory() ?
- os::page_size_for_region(committed_size, reserved_size, 8) :
- os::vm_page_size();
+ size_t page_size = os::vm_page_size();
+ if (os::can_execute_large_page_memory()) {
+ const size_t min_pages = 8;
+ page_size = MIN2(os::page_size_for_region(committed_size, min_pages),
+ os::page_size_for_region(reserved_size, min_pages));
+ }
+
const size_t granularity = os::vm_allocation_granularity();
const size_t r_align = MAX2(page_size, granularity);
const size_t r_size = align_size_up(reserved_size, r_align);
--- a/hotspot/src/share/vm/memory/universe.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/memory/universe.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -838,12 +838,6 @@
// See needs_explicit_null_check.
// Only set the heap base for compressed oops because it indicates
// compressed oops for pstack code.
- bool verbose = PrintCompressedOopsMode || (PrintMiscellaneous && Verbose);
- if (verbose) {
- tty->cr();
- tty->print("heap address: " PTR_FORMAT ", size: " SIZE_FORMAT " MB",
- Universe::heap()->base(), Universe::heap()->reserved_region().byte_size()/M);
- }
if (((uint64_t)Universe::heap()->reserved_region().end() > OopEncodingHeapMax)) {
// Can't reserve heap below 32Gb.
// keep the Universe::narrow_oop_base() set in Universe::reserve_heap()
@@ -853,16 +847,8 @@
// are decoded so that NULL is preserved, so this page will not be accessed.
Universe::set_narrow_oop_use_implicit_null_checks(false);
#endif
- if (verbose) {
- tty->print(", %s: "PTR_FORMAT,
- narrow_oop_mode_to_string(HeapBasedNarrowOop),
- Universe::narrow_oop_base());
- }
} else {
Universe::set_narrow_oop_base(0);
- if (verbose) {
- tty->print(", %s", narrow_oop_mode_to_string(ZeroBasedNarrowOop));
- }
#ifdef _WIN64
if (!Universe::narrow_oop_use_implicit_null_checks()) {
// Don't need guard page for implicit checks in indexed addressing
@@ -875,17 +861,14 @@
Universe::set_narrow_oop_shift(LogMinObjAlignmentInBytes);
} else {
Universe::set_narrow_oop_shift(0);
- if (verbose) {
- tty->print(", %s", narrow_oop_mode_to_string(UnscaledNarrowOop));
- }
}
}
- if (verbose) {
- tty->cr();
- tty->cr();
+ Universe::set_narrow_ptrs_base(Universe::narrow_oop_base());
+
+ if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) {
+ Universe::print_compressed_oops_mode();
}
- Universe::set_narrow_ptrs_base(Universe::narrow_oop_base());
}
// Universe::narrow_oop_base() is one page below the heap.
assert((intptr_t)Universe::narrow_oop_base() <= (intptr_t)(Universe::heap()->base() -
@@ -906,6 +889,24 @@
return JNI_OK;
}
+void Universe::print_compressed_oops_mode() {
+ tty->cr();
+ tty->print("heap address: " PTR_FORMAT ", size: " SIZE_FORMAT " MB",
+ Universe::heap()->base(), Universe::heap()->reserved_region().byte_size()/M);
+
+ tty->print(", Compressed Oops mode: %s", narrow_oop_mode_to_string(narrow_oop_mode()));
+
+ if (Universe::narrow_oop_base() != 0) {
+ tty->print(":" PTR_FORMAT, Universe::narrow_oop_base());
+ }
+
+ if (Universe::narrow_oop_shift() != 0) {
+ tty->print(", Oop shift amount: %d", Universe::narrow_oop_shift());
+ }
+
+ tty->cr();
+ tty->cr();
+}
// Reserve the Java heap, which is now the same for all GCs.
ReservedSpace Universe::reserve_heap(size_t heap_size, size_t alignment) {
@@ -975,11 +976,11 @@
const char* Universe::narrow_oop_mode_to_string(Universe::NARROW_OOP_MODE mode) {
switch (mode) {
case UnscaledNarrowOop:
- return "32-bits Oops";
+ return "32-bit";
case ZeroBasedNarrowOop:
- return "zero based Compressed Oops";
+ return "Zero based";
case HeapBasedNarrowOop:
- return "Compressed Oops with base";
+ return "Non-zero based";
}
ShouldNotReachHere();
--- a/hotspot/src/share/vm/memory/universe.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/memory/universe.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -368,6 +368,8 @@
static void set_narrow_ptrs_base(address a) { _narrow_ptrs_base = a; }
static address narrow_ptrs_base() { return _narrow_ptrs_base; }
+ static void print_compressed_oops_mode();
+
// this is set in vm_version on sparc (and then reset in universe afaict)
static void set_narrow_oop_shift(int shift) {
_narrow_oop._shift = shift;
--- a/hotspot/src/share/vm/prims/jni.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/prims/jni.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -3848,6 +3848,7 @@
unit_test_function_call
// Forward declaration
+void TestOS_test();
void TestReservedSpace_test();
void TestReserveMemorySpecial_test();
void TestVirtualSpace_test();
@@ -3871,6 +3872,7 @@
void execute_internal_vm_tests() {
if (ExecuteInternalVMTests) {
tty->print_cr("Running internal VM tests");
+ run_unit_test(TestOS_test());
run_unit_test(TestReservedSpace_test());
run_unit_test(TestReserveMemorySpecial_test());
run_unit_test(TestVirtualSpace_test());
--- a/hotspot/src/share/vm/runtime/atomic.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/atomic.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -74,12 +74,12 @@
inline static intptr_t add_ptr(intptr_t add_value, volatile intptr_t* dest);
inline static void* add_ptr(intptr_t add_value, volatile void* dest);
// See comment above about using jlong atomics on 32-bit platforms
- static jlong add (jlong add_value, volatile jlong* dest);
+ static jlong add (jlong add_value, volatile jlong* dest);
// Atomically increment location. inc*() provide:
// <fence> increment-dest <membar StoreLoad|StoreStore>
inline static void inc (volatile jint* dest);
- static void inc (volatile jshort* dest);
+ static void inc (volatile jshort* dest);
inline static void inc (volatile size_t* dest);
inline static void inc_ptr(volatile intptr_t* dest);
inline static void inc_ptr(volatile void* dest);
@@ -87,7 +87,7 @@
// Atomically decrement a location. dec*() provide:
// <fence> decrement-dest <membar StoreLoad|StoreStore>
inline static void dec (volatile jint* dest);
- static void dec (volatile jshort* dest);
+ static void dec (volatile jshort* dest);
inline static void dec (volatile size_t* dest);
inline static void dec_ptr(volatile intptr_t* dest);
inline static void dec_ptr(volatile void* dest);
@@ -95,27 +95,22 @@
// Performs atomic exchange of *dest with exchange_value. Returns old
// prior value of *dest. xchg*() provide:
// <fence> exchange-value-with-dest <membar StoreLoad|StoreStore>
- inline static jint xchg(jint exchange_value, volatile jint* dest);
- static unsigned int xchg(unsigned int exchange_value, volatile unsigned int* dest);
-
- inline static intptr_t xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest);
- inline static void* xchg_ptr(void* exchange_value, volatile void* dest);
+ inline static jint xchg (jint exchange_value, volatile jint* dest);
+ static unsigned int xchg (unsigned int exchange_value, volatile unsigned int* dest);
+ inline static intptr_t xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest);
+ inline static void* xchg_ptr(void* exchange_value, volatile void* dest);
// Performs atomic compare of *dest and compare_value, and exchanges
// *dest with exchange_value if the comparison succeeded. Returns prior
// value of *dest. cmpxchg*() provide:
// <fence> compare-and-exchange <membar StoreLoad|StoreStore>
- static jbyte cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value);
- inline static jint cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value);
+ static jbyte cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value);
+ inline static jint cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value);
// See comment above about using jlong atomics on 32-bit platforms
- inline static jlong cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value);
-
- static unsigned int cmpxchg(unsigned int exchange_value,
- volatile unsigned int* dest,
- unsigned int compare_value);
-
- inline static intptr_t cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value);
- inline static void* cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value);
+ inline static jlong cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value);
+ static unsigned int cmpxchg (unsigned int exchange_value, volatile unsigned int* dest, unsigned int compare_value);
+ inline static intptr_t cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value);
+ inline static void* cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value);
};
// To use Atomic::inc(jshort* dest) and Atomic::dec(jshort* dest), the address must be specially
@@ -129,12 +124,12 @@
// );
#ifdef VM_LITTLE_ENDIAN
-#define ATOMIC_SHORT_PAIR(atomic_decl, non_atomic_decl) \
- non_atomic_decl; \
+ #define ATOMIC_SHORT_PAIR(atomic_decl, non_atomic_decl) \
+ non_atomic_decl; \
atomic_decl
#else
-#define ATOMIC_SHORT_PAIR(atomic_decl, non_atomic_decl) \
- atomic_decl; \
+ #define ATOMIC_SHORT_PAIR(atomic_decl, non_atomic_decl) \
+ atomic_decl; \
non_atomic_decl
#endif
--- a/hotspot/src/share/vm/runtime/java.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/java.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -430,8 +430,6 @@
}
}
-jint volatile vm_getting_terminated = 0;
-
// Note: before_exit() can be executed only once, if more than one threads
// are trying to shutdown the VM at the same time, only one thread
// can run before_exit() and all other threads must wait.
@@ -462,8 +460,6 @@
}
}
- OrderAccess::release_store(&vm_getting_terminated, 1);
-
// The only difference between this and Win32's _onexit procs is that
// this version is invoked before any threads get killed.
ExitProc* current = exit_procs;
@@ -587,7 +583,7 @@
void vm_direct_exit(int code) {
notify_vm_shutdown();
os::wait_for_keypress_at_exit();
- ::exit(code);
+ os::exit(code);
}
void vm_perform_shutdown_actions() {
--- a/hotspot/src/share/vm/runtime/mutex.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/mutex.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -267,15 +267,24 @@
// CASPTR() uses the canonical argument order that dominates in the literature.
// Our internal cmpxchg_ptr() uses a bastardized ordering to accommodate Sun .il templates.
-#define CASPTR(a,c,s) intptr_t(Atomic::cmpxchg_ptr ((void *)(s),(void *)(a),(void *)(c)))
+#define CASPTR(a, c, s) \
+ intptr_t(Atomic::cmpxchg_ptr((void *)(s), (void *)(a), (void *)(c)))
#define UNS(x) (uintptr_t(x))
-#define TRACE(m) { static volatile int ctr = 0; int x = ++ctr; if ((x & (x-1))==0) { ::printf ("%d:%s\n", x, #m); ::fflush(stdout); }}
+#define TRACE(m) \
+ { \
+ static volatile int ctr = 0; \
+ int x = ++ctr; \
+ if ((x & (x - 1)) == 0) { \
+ ::printf("%d:%s\n", x, #m); \
+ ::fflush(stdout); \
+ } \
+ }
// Simplistic low-quality Marsaglia SHIFT-XOR RNG.
// Bijective except for the trailing mask operation.
// Useful for spin loops as the compiler can't optimize it away.
-static inline jint MarsagliaXORV (jint x) {
+static inline jint MarsagliaXORV(jint x) {
if (x == 0) x = 1|os::random();
x ^= x << 6;
x ^= ((unsigned)x) >> 21;
@@ -283,7 +292,7 @@
return x & 0x7FFFFFFF;
}
-static int Stall (int its) {
+static int Stall(int its) {
static volatile jint rv = 1;
volatile int OnFrame = 0;
jint v = rv ^ UNS(OnFrame);
@@ -341,7 +350,7 @@
// Clamp spinning at approximately 1/2 of a context-switch round-trip.
// See synchronizer.cpp for details and rationale.
-int Monitor::TrySpin (Thread * const Self) {
+int Monitor::TrySpin(Thread * const Self) {
if (TryLock()) return 1;
if (!os::is_MP()) return 0;
@@ -403,11 +412,11 @@
}
}
-static int ParkCommon (ParkEvent * ev, jlong timo) {
+static int ParkCommon(ParkEvent * ev, jlong timo) {
// Diagnostic support - periodically unwedge blocked threads
intx nmt = NativeMonitorTimeout;
if (nmt > 0 && (nmt < timo || timo <= 0)) {
- timo = nmt;
+ timo = nmt;
}
int err = OS_OK;
if (0 == timo) {
@@ -418,7 +427,7 @@
return err;
}
-inline int Monitor::AcquireOrPush (ParkEvent * ESelf) {
+inline int Monitor::AcquireOrPush(ParkEvent * ESelf) {
intptr_t v = _LockWord.FullWord;
for (;;) {
if ((v & _LBIT) == 0) {
@@ -443,7 +452,7 @@
// Note that ILock and IWait do *not* access _owner.
// _owner is a higher-level logical concept.
-void Monitor::ILock (Thread * Self) {
+void Monitor::ILock(Thread * Self) {
assert(_OnDeck != Self->_MutexEvent, "invariant");
if (TryFast()) {
@@ -514,7 +523,7 @@
goto Exeunt;
}
-void Monitor::IUnlock (bool RelaxAssert) {
+void Monitor::IUnlock(bool RelaxAssert) {
assert(ILocked(), "invariant");
// Conceptually we need a MEMBAR #storestore|#loadstore barrier or fence immediately
// before the store that releases the lock. Crucially, all the stores and loads in the
@@ -589,8 +598,8 @@
_EntryList = w->ListNext;
// as a diagnostic measure consider setting w->_ListNext = BAD
assert(UNS(_OnDeck) == _LBIT, "invariant");
- _OnDeck = w; // pass OnDeck to w.
- // w will clear OnDeck once it acquires the outer lock
+ _OnDeck = w; // pass OnDeck to w.
+ // w will clear OnDeck once it acquires the outer lock
// Another optional optimization ...
// For heavily contended locks it's not uncommon that some other
@@ -724,7 +733,7 @@
return true;
}
-int Monitor::IWait (Thread * Self, jlong timo) {
+int Monitor::IWait(Thread * Self, jlong timo) {
assert(ILocked(), "invariant");
// Phases:
@@ -885,7 +894,7 @@
// sneaking or dependence on any any clever invariants or subtle implementation properties
// of Mutex-Monitor and instead directly address the underlying design flaw.
-void Monitor::lock (Thread * Self) {
+void Monitor::lock(Thread * Self) {
#ifdef CHECK_UNHANDLED_OOPS
// Clear unhandled oops so we get a crash right away. Only clear for non-vm
// or GC threads.
@@ -895,7 +904,7 @@
#endif // CHECK_UNHANDLED_OOPS
debug_only(check_prelock_state(Self));
- assert(_owner != Self , "invariant");
+ assert(_owner != Self, "invariant");
assert(_OnDeck != Self->_MutexEvent, "invariant");
if (TryFast()) {
@@ -943,7 +952,7 @@
// that is guaranteed not to block while running inside the VM. If this is called with
// thread state set to be in VM, the safepoint synchronization code will deadlock!
-void Monitor::lock_without_safepoint_check (Thread * Self) {
+void Monitor::lock_without_safepoint_check(Thread * Self) {
assert(_owner != Self, "invariant");
ILock(Self);
assert(_owner == NULL, "invariant");
@@ -983,8 +992,8 @@
}
void Monitor::unlock() {
- assert(_owner == Thread::current(), "invariant");
- assert(_OnDeck != Thread::current()->_MutexEvent , "invariant");
+ assert(_owner == Thread::current(), "invariant");
+ assert(_OnDeck != Thread::current()->_MutexEvent, "invariant");
set_owner(NULL);
if (_snuck) {
assert(SafepointSynchronize::is_at_safepoint() && Thread::current()->is_VM_thread(), "sneak");
@@ -1071,7 +1080,8 @@
IUnlock(false);
}
-bool Monitor::wait(bool no_safepoint_check, long timeout, bool as_suspend_equivalent) {
+bool Monitor::wait(bool no_safepoint_check, long timeout,
+ bool as_suspend_equivalent) {
Thread * const Self = Thread::current();
assert(_owner == Self, "invariant");
assert(ILocked(), "invariant");
@@ -1082,14 +1092,14 @@
guarantee(no_safepoint_check || Self->is_Java_thread(), "invariant");
#ifdef ASSERT
- Monitor * least = get_least_ranked_lock_besides_this(Self->owned_locks());
- assert(least != this, "Specification of get_least_... call above");
- if (least != NULL && least->rank() <= special) {
- tty->print("Attempting to wait on monitor %s/%d while holding"
- " lock %s/%d -- possible deadlock",
- name(), rank(), least->name(), least->rank());
- assert(false, "Shouldn't block(wait) while holding a lock of rank special");
- }
+ Monitor * least = get_least_ranked_lock_besides_this(Self->owned_locks());
+ assert(least != this, "Specification of get_least_... call above");
+ if (least != NULL && least->rank() <= special) {
+ tty->print("Attempting to wait on monitor %s/%d while holding"
+ " lock %s/%d -- possible deadlock",
+ name(), rank(), least->name(), least->rank());
+ assert(false, "Shouldn't block(wait) while holding a lock of rank special");
+ }
#endif // ASSERT
int wait_status;
@@ -1140,7 +1150,7 @@
assert((UNS(_owner)|UNS(_LockWord.FullWord)|UNS(_EntryList)|UNS(_WaitSet)|UNS(_OnDeck)) == 0, "");
}
-void Monitor::ClearMonitor (Monitor * m, const char *name) {
+void Monitor::ClearMonitor(Monitor * m, const char *name) {
m->_owner = NULL;
m->_snuck = false;
if (name == NULL) {
@@ -1158,7 +1168,7 @@
Monitor::Monitor() { ClearMonitor(this); }
-Monitor::Monitor (int Rank, const char * name, bool allow_vm_block) {
+Monitor::Monitor(int Rank, const char * name, bool allow_vm_block) {
ClearMonitor(this, name);
#ifdef ASSERT
_allow_vm_block = allow_vm_block;
@@ -1170,11 +1180,11 @@
assert((UNS(_owner)|UNS(_LockWord.FullWord)|UNS(_EntryList)|UNS(_WaitSet)|UNS(_OnDeck)) == 0, "");
}
-Mutex::Mutex (int Rank, const char * name, bool allow_vm_block) {
+Mutex::Mutex(int Rank, const char * name, bool allow_vm_block) {
ClearMonitor((Monitor *) this, name);
#ifdef ASSERT
- _allow_vm_block = allow_vm_block;
- _rank = Rank;
+ _allow_vm_block = allow_vm_block;
+ _rank = Rank;
#endif
}
@@ -1247,8 +1257,9 @@
bool Monitor::contains(Monitor* locks, Monitor * lock) {
for (; locks != NULL; locks = locks->next()) {
- if (locks == lock)
+ if (locks == lock) {
return true;
+ }
}
return false;
}
@@ -1279,40 +1290,40 @@
// link "this" into the owned locks list
- #ifdef ASSERT // Thread::_owned_locks is under the same ifdef
- Monitor* locks = get_least_ranked_lock(new_owner->owned_locks());
- // Mutex::set_owner_implementation is a friend of Thread
+#ifdef ASSERT // Thread::_owned_locks is under the same ifdef
+ Monitor* locks = get_least_ranked_lock(new_owner->owned_locks());
+ // Mutex::set_owner_implementation is a friend of Thread
- assert(this->rank() >= 0, "bad lock rank");
+ assert(this->rank() >= 0, "bad lock rank");
- // Deadlock avoidance rules require us to acquire Mutexes only in
- // a global total order. For example m1 is the lowest ranked mutex
- // that the thread holds and m2 is the mutex the thread is trying
- // to acquire, then deadlock avoidance rules require that the rank
- // of m2 be less than the rank of m1.
- // The rank Mutex::native is an exception in that it is not subject
- // to the verification rules.
- // Here are some further notes relating to mutex acquisition anomalies:
- // . under Solaris, the interrupt lock gets acquired when doing
- // profiling, so any lock could be held.
- // . it is also ok to acquire Safepoint_lock at the very end while we
- // already hold Terminator_lock - may happen because of periodic safepoints
- if (this->rank() != Mutex::native &&
- this->rank() != Mutex::suspend_resume &&
- locks != NULL && locks->rank() <= this->rank() &&
- !SafepointSynchronize::is_at_safepoint() &&
- this != Interrupt_lock && this != ProfileVM_lock &&
- !(this == Safepoint_lock && contains(locks, Terminator_lock) &&
- SafepointSynchronize::is_synchronizing())) {
- new_owner->print_owned_locks();
- fatal(err_msg("acquiring lock %s/%d out of order with lock %s/%d -- "
- "possible deadlock", this->name(), this->rank(),
- locks->name(), locks->rank()));
- }
+ // Deadlock avoidance rules require us to acquire Mutexes only in
+ // a global total order. For example m1 is the lowest ranked mutex
+ // that the thread holds and m2 is the mutex the thread is trying
+ // to acquire, then deadlock avoidance rules require that the rank
+ // of m2 be less than the rank of m1.
+ // The rank Mutex::native is an exception in that it is not subject
+ // to the verification rules.
+ // Here are some further notes relating to mutex acquisition anomalies:
+ // . under Solaris, the interrupt lock gets acquired when doing
+ // profiling, so any lock could be held.
+ // . it is also ok to acquire Safepoint_lock at the very end while we
+ // already hold Terminator_lock - may happen because of periodic safepoints
+ if (this->rank() != Mutex::native &&
+ this->rank() != Mutex::suspend_resume &&
+ locks != NULL && locks->rank() <= this->rank() &&
+ !SafepointSynchronize::is_at_safepoint() &&
+ this != Interrupt_lock && this != ProfileVM_lock &&
+ !(this == Safepoint_lock && contains(locks, Terminator_lock) &&
+ SafepointSynchronize::is_synchronizing())) {
+ new_owner->print_owned_locks();
+ fatal(err_msg("acquiring lock %s/%d out of order with lock %s/%d -- "
+ "possible deadlock", this->name(), this->rank(),
+ locks->name(), locks->rank()));
+ }
- this->_next = new_owner->_owned_locks;
- new_owner->_owned_locks = this;
- #endif
+ this->_next = new_owner->_owned_locks;
+ new_owner->_owned_locks = this;
+#endif
} else {
// the thread is releasing this lock
@@ -1325,27 +1336,27 @@
_owner = NULL; // set the owner
- #ifdef ASSERT
- Monitor *locks = old_owner->owned_locks();
+#ifdef ASSERT
+ Monitor *locks = old_owner->owned_locks();
- // remove "this" from the owned locks list
+ // remove "this" from the owned locks list
- Monitor *prev = NULL;
- bool found = false;
- for (; locks != NULL; prev = locks, locks = locks->next()) {
- if (locks == this) {
- found = true;
- break;
- }
+ Monitor *prev = NULL;
+ bool found = false;
+ for (; locks != NULL; prev = locks, locks = locks->next()) {
+ if (locks == this) {
+ found = true;
+ break;
}
- assert(found, "Removing a lock not owned");
- if (prev == NULL) {
- old_owner->_owned_locks = _next;
- } else {
- prev->_next = _next;
- }
- _next = NULL;
- #endif
+ }
+ assert(found, "Removing a lock not owned");
+ if (prev == NULL) {
+ old_owner->_owned_locks = _next;
+ } else {
+ prev->_next = _next;
+ }
+ _next = NULL;
+#endif
}
}
@@ -1360,11 +1371,11 @@
name()));
}
debug_only(if (rank() != Mutex::special) \
- thread->check_for_valid_safepoint_state(false);)
+ thread->check_for_valid_safepoint_state(false);)
}
if (thread->is_Watcher_thread()) {
assert(!WatcherThread::watcher_thread()->has_crash_protection(),
- "locking not allowed when crash protection is set");
+ "locking not allowed when crash protection is set");
}
}
--- a/hotspot/src/share/vm/runtime/objectMonitor.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/objectMonitor.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -45,7 +45,7 @@
#include "utilities/preserveException.hpp"
#if defined(__GNUC__) && !defined(IA64) && !defined(PPC64)
- // Need to inhibit inlining for older versions of GCC to avoid build-time failures
+// Need to inhibit inlining for older versions of GCC to avoid build-time failures
#define NOINLINE __attribute__((noinline))
#else
#define NOINLINE
@@ -70,10 +70,10 @@
#define DTRACE_MONITOR_WAIT_PROBE(monitor, obj, thread, millis) \
{ \
- if (DTraceMonitorProbes) { \
+ if (DTraceMonitorProbes) { \
DTRACE_MONITOR_PROBE_COMMON(obj, thread); \
HOTSPOT_MONITOR_WAIT(jtid, \
- (monitor), bytes, len, (millis)); \
+ (monitor), bytes, len, (millis)); \
} \
}
@@ -85,10 +85,10 @@
#define DTRACE_MONITOR_PROBE(probe, monitor, obj, thread) \
{ \
- if (DTraceMonitorProbes) { \
+ if (DTraceMonitorProbes) { \
DTRACE_MONITOR_PROBE_COMMON(obj, thread); \
- HOTSPOT_MONITOR_##probe(jtid, \
- (uintptr_t)(monitor), bytes, len); \
+ HOTSPOT_MONITOR_##probe(jtid, \
+ (uintptr_t)(monitor), bytes, len); \
} \
}
@@ -254,11 +254,11 @@
bool ObjectMonitor::try_enter(Thread* THREAD) {
if (THREAD != _owner) {
if (THREAD->is_lock_owned ((address)_owner)) {
- assert(_recursions == 0, "internal state error");
- _owner = THREAD;
- _recursions = 1;
- OwnerIsThread = 1;
- return true;
+ assert(_recursions == 0, "internal state error");
+ _owner = THREAD;
+ _recursions = 1;
+ OwnerIsThread = 1;
+ return true;
}
if (Atomic::cmpxchg_ptr (THREAD, &_owner, NULL) != NULL) {
return false;
@@ -277,17 +277,17 @@
void * cur = Atomic::cmpxchg_ptr (Self, &_owner, NULL);
if (cur == NULL) {
- // Either ASSERT _recursions == 0 or explicitly set _recursions = 0.
- assert(_recursions == 0 , "invariant");
- assert(_owner == Self, "invariant");
- // CONSIDER: set or assert OwnerIsThread == 1
- return;
+ // Either ASSERT _recursions == 0 or explicitly set _recursions = 0.
+ assert(_recursions == 0, "invariant");
+ assert(_owner == Self, "invariant");
+ // CONSIDER: set or assert OwnerIsThread == 1
+ return;
}
if (cur == Self) {
- // TODO-FIXME: check for integer overflow! BUGID 6557169.
- _recursions++;
- return;
+ // TODO-FIXME: check for integer overflow! BUGID 6557169.
+ _recursions++;
+ return;
}
if (Self->is_lock_owned ((address)cur)) {
@@ -310,20 +310,20 @@
// Note that if we acquire the monitor from an initial spin
// we forgo posting JVMTI events and firing DTRACE probes.
if (Knob_SpinEarly && TrySpin (Self) > 0) {
- assert(_owner == Self , "invariant");
- assert(_recursions == 0 , "invariant");
- assert(((oop)(object()))->mark() == markOopDesc::encode(this), "invariant");
- Self->_Stalled = 0;
- return;
+ assert(_owner == Self, "invariant");
+ assert(_recursions == 0, "invariant");
+ assert(((oop)(object()))->mark() == markOopDesc::encode(this), "invariant");
+ Self->_Stalled = 0;
+ return;
}
- assert(_owner != Self , "invariant");
- assert(_succ != Self , "invariant");
- assert(Self->is_Java_thread() , "invariant");
+ assert(_owner != Self, "invariant");
+ assert(_succ != Self, "invariant");
+ assert(Self->is_Java_thread(), "invariant");
JavaThread * jt = (JavaThread *) Self;
assert(!SafepointSynchronize::is_at_safepoint(), "invariant");
- assert(jt->thread_state() != _thread_blocked , "invariant");
- assert(this->object() != NULL , "invariant");
+ assert(jt->thread_state() != _thread_blocked, "invariant");
+ assert(this->object() != NULL, "invariant");
assert(_count >= 0, "invariant");
// Prevent deflation at STW-time. See deflate_idle_monitors() and is_busy().
@@ -361,13 +361,12 @@
if (!ExitSuspendEquivalent(jt)) break;
- //
// We have acquired the contended monitor, but while we were
// waiting another thread suspended us. We don't want to enter
// the monitor while suspended because that would surprise the
// thread that suspended us.
//
- _recursions = 0;
+ _recursions = 0;
_succ = NULL;
exit(false, Self);
@@ -390,9 +389,9 @@
Self->_Stalled = 0;
// Must either set _recursions = 0 or ASSERT _recursions == 0.
- assert(_recursions == 0 , "invariant");
- assert(_owner == Self , "invariant");
- assert(_succ != Self , "invariant");
+ assert(_recursions == 0, "invariant");
+ assert(_owner == Self, "invariant");
+ assert(_succ != Self, "invariant");
assert(((oop)(object()))->mark() == markOopDesc::encode(this), "invariant");
// The thread -- now the owner -- is back in vm mode.
@@ -426,7 +425,7 @@
}
if (ObjectMonitor::_sync_ContendedLockAttempts != NULL) {
- ObjectMonitor::_sync_ContendedLockAttempts->inc();
+ ObjectMonitor::_sync_ContendedLockAttempts->inc();
}
}
@@ -434,7 +433,7 @@
// Caveat: TryLock() is not necessarily serializing if it returns failure.
// Callers must compensate as needed.
-int ObjectMonitor::TryLock (Thread * Self) {
+int ObjectMonitor::TryLock(Thread * Self) {
void * own = _owner;
if (own != NULL) return 0;
if (Atomic::cmpxchg_ptr (Self, &_owner, NULL) == NULL) {
@@ -451,245 +450,244 @@
return -1;
}
-void NOINLINE ObjectMonitor::EnterI (TRAPS) {
- Thread * const Self = THREAD;
- assert(Self->is_Java_thread(), "invariant");
- assert(((JavaThread *) Self)->thread_state() == _thread_blocked , "invariant");
+void NOINLINE ObjectMonitor::EnterI(TRAPS) {
+ Thread * const Self = THREAD;
+ assert(Self->is_Java_thread(), "invariant");
+ assert(((JavaThread *) Self)->thread_state() == _thread_blocked, "invariant");
- // Try the lock - TATAS
- if (TryLock (Self) > 0) {
- assert(_succ != Self , "invariant");
- assert(_owner == Self , "invariant");
- assert(_Responsible != Self , "invariant");
- return;
- }
+ // Try the lock - TATAS
+ if (TryLock (Self) > 0) {
+ assert(_succ != Self, "invariant");
+ assert(_owner == Self, "invariant");
+ assert(_Responsible != Self, "invariant");
+ return;
+ }
- DeferredInitialize();
+ DeferredInitialize();
- // We try one round of spinning *before* enqueueing Self.
- //
- // If the _owner is ready but OFFPROC we could use a YieldTo()
- // operation to donate the remainder of this thread's quantum
- // to the owner. This has subtle but beneficial affinity
- // effects.
+ // We try one round of spinning *before* enqueueing Self.
+ //
+ // If the _owner is ready but OFFPROC we could use a YieldTo()
+ // operation to donate the remainder of this thread's quantum
+ // to the owner. This has subtle but beneficial affinity
+ // effects.
- if (TrySpin (Self) > 0) {
- assert(_owner == Self , "invariant");
- assert(_succ != Self , "invariant");
- assert(_Responsible != Self , "invariant");
- return;
- }
+ if (TrySpin (Self) > 0) {
+ assert(_owner == Self, "invariant");
+ assert(_succ != Self, "invariant");
+ assert(_Responsible != Self, "invariant");
+ return;
+ }
+
+ // The Spin failed -- Enqueue and park the thread ...
+ assert(_succ != Self, "invariant");
+ assert(_owner != Self, "invariant");
+ assert(_Responsible != Self, "invariant");
- // The Spin failed -- Enqueue and park the thread ...
- assert(_succ != Self , "invariant");
- assert(_owner != Self , "invariant");
- assert(_Responsible != Self , "invariant");
+ // Enqueue "Self" on ObjectMonitor's _cxq.
+ //
+ // Node acts as a proxy for Self.
+ // As an aside, if were to ever rewrite the synchronization code mostly
+ // in Java, WaitNodes, ObjectMonitors, and Events would become 1st-class
+ // Java objects. This would avoid awkward lifecycle and liveness issues,
+ // as well as eliminate a subset of ABA issues.
+ // TODO: eliminate ObjectWaiter and enqueue either Threads or Events.
- // Enqueue "Self" on ObjectMonitor's _cxq.
- //
- // Node acts as a proxy for Self.
- // As an aside, if were to ever rewrite the synchronization code mostly
- // in Java, WaitNodes, ObjectMonitors, and Events would become 1st-class
- // Java objects. This would avoid awkward lifecycle and liveness issues,
- // as well as eliminate a subset of ABA issues.
- // TODO: eliminate ObjectWaiter and enqueue either Threads or Events.
- //
+ ObjectWaiter node(Self);
+ Self->_ParkEvent->reset();
+ node._prev = (ObjectWaiter *) 0xBAD;
+ node.TState = ObjectWaiter::TS_CXQ;
+
+ // Push "Self" onto the front of the _cxq.
+ // Once on cxq/EntryList, Self stays on-queue until it acquires the lock.
+ // Note that spinning tends to reduce the rate at which threads
+ // enqueue and dequeue on EntryList|cxq.
+ ObjectWaiter * nxt;
+ for (;;) {
+ node._next = nxt = _cxq;
+ if (Atomic::cmpxchg_ptr(&node, &_cxq, nxt) == nxt) break;
- ObjectWaiter node(Self);
- Self->_ParkEvent->reset();
- node._prev = (ObjectWaiter *) 0xBAD;
- node.TState = ObjectWaiter::TS_CXQ;
-
- // Push "Self" onto the front of the _cxq.
- // Once on cxq/EntryList, Self stays on-queue until it acquires the lock.
- // Note that spinning tends to reduce the rate at which threads
- // enqueue and dequeue on EntryList|cxq.
- ObjectWaiter * nxt;
- for (;;) {
- node._next = nxt = _cxq;
- if (Atomic::cmpxchg_ptr(&node, &_cxq, nxt) == nxt) break;
-
- // Interference - the CAS failed because _cxq changed. Just retry.
- // As an optional optimization we retry the lock.
- if (TryLock (Self) > 0) {
- assert(_succ != Self , "invariant");
- assert(_owner == Self , "invariant");
- assert(_Responsible != Self , "invariant");
- return;
- }
+ // Interference - the CAS failed because _cxq changed. Just retry.
+ // As an optional optimization we retry the lock.
+ if (TryLock (Self) > 0) {
+ assert(_succ != Self, "invariant");
+ assert(_owner == Self, "invariant");
+ assert(_Responsible != Self, "invariant");
+ return;
}
+ }
- // Check for cxq|EntryList edge transition to non-null. This indicates
- // the onset of contention. While contention persists exiting threads
- // will use a ST:MEMBAR:LD 1-1 exit protocol. When contention abates exit
- // operations revert to the faster 1-0 mode. This enter operation may interleave
- // (race) a concurrent 1-0 exit operation, resulting in stranding, so we
- // arrange for one of the contending thread to use a timed park() operations
- // to detect and recover from the race. (Stranding is form of progress failure
- // where the monitor is unlocked but all the contending threads remain parked).
- // That is, at least one of the contended threads will periodically poll _owner.
- // One of the contending threads will become the designated "Responsible" thread.
- // The Responsible thread uses a timed park instead of a normal indefinite park
- // operation -- it periodically wakes and checks for and recovers from potential
- // strandings admitted by 1-0 exit operations. We need at most one Responsible
- // thread per-monitor at any given moment. Only threads on cxq|EntryList may
- // be responsible for a monitor.
- //
- // Currently, one of the contended threads takes on the added role of "Responsible".
- // A viable alternative would be to use a dedicated "stranding checker" thread
- // that periodically iterated over all the threads (or active monitors) and unparked
- // successors where there was risk of stranding. This would help eliminate the
- // timer scalability issues we see on some platforms as we'd only have one thread
- // -- the checker -- parked on a timer.
+ // Check for cxq|EntryList edge transition to non-null. This indicates
+ // the onset of contention. While contention persists exiting threads
+ // will use a ST:MEMBAR:LD 1-1 exit protocol. When contention abates exit
+ // operations revert to the faster 1-0 mode. This enter operation may interleave
+ // (race) a concurrent 1-0 exit operation, resulting in stranding, so we
+ // arrange for one of the contending thread to use a timed park() operations
+ // to detect and recover from the race. (Stranding is form of progress failure
+ // where the monitor is unlocked but all the contending threads remain parked).
+ // That is, at least one of the contended threads will periodically poll _owner.
+ // One of the contending threads will become the designated "Responsible" thread.
+ // The Responsible thread uses a timed park instead of a normal indefinite park
+ // operation -- it periodically wakes and checks for and recovers from potential
+ // strandings admitted by 1-0 exit operations. We need at most one Responsible
+ // thread per-monitor at any given moment. Only threads on cxq|EntryList may
+ // be responsible for a monitor.
+ //
+ // Currently, one of the contended threads takes on the added role of "Responsible".
+ // A viable alternative would be to use a dedicated "stranding checker" thread
+ // that periodically iterated over all the threads (or active monitors) and unparked
+ // successors where there was risk of stranding. This would help eliminate the
+ // timer scalability issues we see on some platforms as we'd only have one thread
+ // -- the checker -- parked on a timer.
- if ((SyncFlags & 16) == 0 && nxt == NULL && _EntryList == NULL) {
- // Try to assume the role of responsible thread for the monitor.
- // CONSIDER: ST vs CAS vs { if (Responsible==null) Responsible=Self }
- Atomic::cmpxchg_ptr(Self, &_Responsible, NULL);
+ if ((SyncFlags & 16) == 0 && nxt == NULL && _EntryList == NULL) {
+ // Try to assume the role of responsible thread for the monitor.
+ // CONSIDER: ST vs CAS vs { if (Responsible==null) Responsible=Self }
+ Atomic::cmpxchg_ptr(Self, &_Responsible, NULL);
+ }
+
+ // The lock might have been released while this thread was occupied queueing
+ // itself onto _cxq. To close the race and avoid "stranding" and
+ // progress-liveness failure we must resample-retry _owner before parking.
+ // Note the Dekker/Lamport duality: ST cxq; MEMBAR; LD Owner.
+ // In this case the ST-MEMBAR is accomplished with CAS().
+ //
+ // TODO: Defer all thread state transitions until park-time.
+ // Since state transitions are heavy and inefficient we'd like
+ // to defer the state transitions until absolutely necessary,
+ // and in doing so avoid some transitions ...
+
+ TEVENT(Inflated enter - Contention);
+ int nWakeups = 0;
+ int RecheckInterval = 1;
+
+ for (;;) {
+
+ if (TryLock(Self) > 0) break;
+ assert(_owner != Self, "invariant");
+
+ if ((SyncFlags & 2) && _Responsible == NULL) {
+ Atomic::cmpxchg_ptr(Self, &_Responsible, NULL);
}
- // The lock might have been released while this thread was occupied queueing
- // itself onto _cxq. To close the race and avoid "stranding" and
- // progress-liveness failure we must resample-retry _owner before parking.
- // Note the Dekker/Lamport duality: ST cxq; MEMBAR; LD Owner.
- // In this case the ST-MEMBAR is accomplished with CAS().
- //
- // TODO: Defer all thread state transitions until park-time.
- // Since state transitions are heavy and inefficient we'd like
- // to defer the state transitions until absolutely necessary,
- // and in doing so avoid some transitions ...
-
- TEVENT(Inflated enter - Contention);
- int nWakeups = 0;
- int RecheckInterval = 1;
-
- for (;;) {
-
- if (TryLock(Self) > 0) break;
- assert(_owner != Self, "invariant");
-
- if ((SyncFlags & 2) && _Responsible == NULL) {
- Atomic::cmpxchg_ptr(Self, &_Responsible, NULL);
- }
-
- // park self
- if (_Responsible == Self || (SyncFlags & 1)) {
- TEVENT(Inflated enter - park TIMED);
- Self->_ParkEvent->park((jlong) RecheckInterval);
- // Increase the RecheckInterval, but clamp the value.
- RecheckInterval *= 8;
- if (RecheckInterval > 1000) RecheckInterval = 1000;
- } else {
- TEVENT(Inflated enter - park UNTIMED);
- Self->_ParkEvent->park();
- }
-
- if (TryLock(Self) > 0) break;
-
- // The lock is still contested.
- // Keep a tally of the # of futile wakeups.
- // Note that the counter is not protected by a lock or updated by atomics.
- // That is by design - we trade "lossy" counters which are exposed to
- // races during updates for a lower probe effect.
- TEVENT(Inflated enter - Futile wakeup);
- if (ObjectMonitor::_sync_FutileWakeups != NULL) {
- ObjectMonitor::_sync_FutileWakeups->inc();
- }
- ++nWakeups;
-
- // Assuming this is not a spurious wakeup we'll normally find _succ == Self.
- // We can defer clearing _succ until after the spin completes
- // TrySpin() must tolerate being called with _succ == Self.
- // Try yet another round of adaptive spinning.
- if ((Knob_SpinAfterFutile & 1) && TrySpin(Self) > 0) break;
-
- // We can find that we were unpark()ed and redesignated _succ while
- // we were spinning. That's harmless. If we iterate and call park(),
- // park() will consume the event and return immediately and we'll
- // just spin again. This pattern can repeat, leaving _succ to simply
- // spin on a CPU. Enable Knob_ResetEvent to clear pending unparks().
- // Alternately, we can sample fired() here, and if set, forgo spinning
- // in the next iteration.
-
- if ((Knob_ResetEvent & 1) && Self->_ParkEvent->fired()) {
- Self->_ParkEvent->reset();
- OrderAccess::fence();
- }
- if (_succ == Self) _succ = NULL;
-
- // Invariant: after clearing _succ a thread *must* retry _owner before parking.
- OrderAccess::fence();
+ // park self
+ if (_Responsible == Self || (SyncFlags & 1)) {
+ TEVENT(Inflated enter - park TIMED);
+ Self->_ParkEvent->park((jlong) RecheckInterval);
+ // Increase the RecheckInterval, but clamp the value.
+ RecheckInterval *= 8;
+ if (RecheckInterval > 1000) RecheckInterval = 1000;
+ } else {
+ TEVENT(Inflated enter - park UNTIMED);
+ Self->_ParkEvent->park();
}
- // Egress :
- // Self has acquired the lock -- Unlink Self from the cxq or EntryList.
- // Normally we'll find Self on the EntryList .
- // From the perspective of the lock owner (this thread), the
- // EntryList is stable and cxq is prepend-only.
- // The head of cxq is volatile but the interior is stable.
- // In addition, Self.TState is stable.
+ if (TryLock(Self) > 0) break;
+
+ // The lock is still contested.
+ // Keep a tally of the # of futile wakeups.
+ // Note that the counter is not protected by a lock or updated by atomics.
+ // That is by design - we trade "lossy" counters which are exposed to
+ // races during updates for a lower probe effect.
+ TEVENT(Inflated enter - Futile wakeup);
+ if (ObjectMonitor::_sync_FutileWakeups != NULL) {
+ ObjectMonitor::_sync_FutileWakeups->inc();
+ }
+ ++nWakeups;
- assert(_owner == Self , "invariant");
- assert(object() != NULL , "invariant");
- // I'd like to write:
- // guarantee (((oop)(object()))->mark() == markOopDesc::encode(this), "invariant") ;
- // but as we're at a safepoint that's not safe.
+ // Assuming this is not a spurious wakeup we'll normally find _succ == Self.
+ // We can defer clearing _succ until after the spin completes
+ // TrySpin() must tolerate being called with _succ == Self.
+ // Try yet another round of adaptive spinning.
+ if ((Knob_SpinAfterFutile & 1) && TrySpin(Self) > 0) break;
- UnlinkAfterAcquire(Self, &node);
+ // We can find that we were unpark()ed and redesignated _succ while
+ // we were spinning. That's harmless. If we iterate and call park(),
+ // park() will consume the event and return immediately and we'll
+ // just spin again. This pattern can repeat, leaving _succ to simply
+ // spin on a CPU. Enable Knob_ResetEvent to clear pending unparks().
+ // Alternately, we can sample fired() here, and if set, forgo spinning
+ // in the next iteration.
+
+ if ((Knob_ResetEvent & 1) && Self->_ParkEvent->fired()) {
+ Self->_ParkEvent->reset();
+ OrderAccess::fence();
+ }
if (_succ == Self) _succ = NULL;
- assert(_succ != Self, "invariant");
- if (_Responsible == Self) {
- _Responsible = NULL;
- OrderAccess::fence(); // Dekker pivot-point
+ // Invariant: after clearing _succ a thread *must* retry _owner before parking.
+ OrderAccess::fence();
+ }
+
+ // Egress :
+ // Self has acquired the lock -- Unlink Self from the cxq or EntryList.
+ // Normally we'll find Self on the EntryList .
+ // From the perspective of the lock owner (this thread), the
+ // EntryList is stable and cxq is prepend-only.
+ // The head of cxq is volatile but the interior is stable.
+ // In addition, Self.TState is stable.
- // We may leave threads on cxq|EntryList without a designated
- // "Responsible" thread. This is benign. When this thread subsequently
- // exits the monitor it can "see" such preexisting "old" threads --
- // threads that arrived on the cxq|EntryList before the fence, above --
- // by LDing cxq|EntryList. Newly arrived threads -- that is, threads
- // that arrive on cxq after the ST:MEMBAR, above -- will set Responsible
- // non-null and elect a new "Responsible" timer thread.
- //
- // This thread executes:
- // ST Responsible=null; MEMBAR (in enter epilogue - here)
- // LD cxq|EntryList (in subsequent exit)
- //
- // Entering threads in the slow/contended path execute:
- // ST cxq=nonnull; MEMBAR; LD Responsible (in enter prolog)
- // The (ST cxq; MEMBAR) is accomplished with CAS().
- //
- // The MEMBAR, above, prevents the LD of cxq|EntryList in the subsequent
- // exit operation from floating above the ST Responsible=null.
- }
+ assert(_owner == Self, "invariant");
+ assert(object() != NULL, "invariant");
+ // I'd like to write:
+ // guarantee (((oop)(object()))->mark() == markOopDesc::encode(this), "invariant") ;
+ // but as we're at a safepoint that's not safe.
+
+ UnlinkAfterAcquire(Self, &node);
+ if (_succ == Self) _succ = NULL;
+
+ assert(_succ != Self, "invariant");
+ if (_Responsible == Self) {
+ _Responsible = NULL;
+ OrderAccess::fence(); // Dekker pivot-point
- // We've acquired ownership with CAS().
- // CAS is serializing -- it has MEMBAR/FENCE-equivalent semantics.
- // But since the CAS() this thread may have also stored into _succ,
- // EntryList, cxq or Responsible. These meta-data updates must be
- // visible __before this thread subsequently drops the lock.
- // Consider what could occur if we didn't enforce this constraint --
- // STs to monitor meta-data and user-data could reorder with (become
- // visible after) the ST in exit that drops ownership of the lock.
- // Some other thread could then acquire the lock, but observe inconsistent
- // or old monitor meta-data and heap data. That violates the JMM.
- // To that end, the 1-0 exit() operation must have at least STST|LDST
- // "release" barrier semantics. Specifically, there must be at least a
- // STST|LDST barrier in exit() before the ST of null into _owner that drops
- // the lock. The barrier ensures that changes to monitor meta-data and data
- // protected by the lock will be visible before we release the lock, and
- // therefore before some other thread (CPU) has a chance to acquire the lock.
- // See also: http://gee.cs.oswego.edu/dl/jmm/cookbook.html.
+ // We may leave threads on cxq|EntryList without a designated
+ // "Responsible" thread. This is benign. When this thread subsequently
+ // exits the monitor it can "see" such preexisting "old" threads --
+ // threads that arrived on the cxq|EntryList before the fence, above --
+ // by LDing cxq|EntryList. Newly arrived threads -- that is, threads
+ // that arrive on cxq after the ST:MEMBAR, above -- will set Responsible
+ // non-null and elect a new "Responsible" timer thread.
+ //
+ // This thread executes:
+ // ST Responsible=null; MEMBAR (in enter epilogue - here)
+ // LD cxq|EntryList (in subsequent exit)
+ //
+ // Entering threads in the slow/contended path execute:
+ // ST cxq=nonnull; MEMBAR; LD Responsible (in enter prolog)
+ // The (ST cxq; MEMBAR) is accomplished with CAS().
//
- // Critically, any prior STs to _succ or EntryList must be visible before
- // the ST of null into _owner in the *subsequent* (following) corresponding
- // monitorexit. Recall too, that in 1-0 mode monitorexit does not necessarily
- // execute a serializing instruction.
+ // The MEMBAR, above, prevents the LD of cxq|EntryList in the subsequent
+ // exit operation from floating above the ST Responsible=null.
+ }
- if (SyncFlags & 8) {
- OrderAccess::fence();
- }
- return;
+ // We've acquired ownership with CAS().
+ // CAS is serializing -- it has MEMBAR/FENCE-equivalent semantics.
+ // But since the CAS() this thread may have also stored into _succ,
+ // EntryList, cxq or Responsible. These meta-data updates must be
+ // visible __before this thread subsequently drops the lock.
+ // Consider what could occur if we didn't enforce this constraint --
+ // STs to monitor meta-data and user-data could reorder with (become
+ // visible after) the ST in exit that drops ownership of the lock.
+ // Some other thread could then acquire the lock, but observe inconsistent
+ // or old monitor meta-data and heap data. That violates the JMM.
+ // To that end, the 1-0 exit() operation must have at least STST|LDST
+ // "release" barrier semantics. Specifically, there must be at least a
+ // STST|LDST barrier in exit() before the ST of null into _owner that drops
+ // the lock. The barrier ensures that changes to monitor meta-data and data
+ // protected by the lock will be visible before we release the lock, and
+ // therefore before some other thread (CPU) has a chance to acquire the lock.
+ // See also: http://gee.cs.oswego.edu/dl/jmm/cookbook.html.
+ //
+ // Critically, any prior STs to _succ or EntryList must be visible before
+ // the ST of null into _owner in the *subsequent* (following) corresponding
+ // monitorexit. Recall too, that in 1-0 mode monitorexit does not necessarily
+ // execute a serializing instruction.
+
+ if (SyncFlags & 8) {
+ OrderAccess::fence();
+ }
+ return;
}
// ReenterI() is a specialized inline form of the latter half of the
@@ -700,160 +698,159 @@
// Knob_Reset and Knob_SpinAfterFutile support and restructuring the
// loop accordingly.
-void NOINLINE ObjectMonitor::ReenterI (Thread * Self, ObjectWaiter * SelfNode) {
- assert(Self != NULL , "invariant");
- assert(SelfNode != NULL , "invariant");
- assert(SelfNode->_thread == Self , "invariant");
- assert(_waiters > 0 , "invariant");
- assert(((oop)(object()))->mark() == markOopDesc::encode(this) , "invariant");
- assert(((JavaThread *)Self)->thread_state() != _thread_blocked, "invariant");
- JavaThread * jt = (JavaThread *) Self;
+void NOINLINE ObjectMonitor::ReenterI(Thread * Self, ObjectWaiter * SelfNode) {
+ assert(Self != NULL, "invariant");
+ assert(SelfNode != NULL, "invariant");
+ assert(SelfNode->_thread == Self, "invariant");
+ assert(_waiters > 0, "invariant");
+ assert(((oop)(object()))->mark() == markOopDesc::encode(this), "invariant");
+ assert(((JavaThread *)Self)->thread_state() != _thread_blocked, "invariant");
+ JavaThread * jt = (JavaThread *) Self;
- int nWakeups = 0;
- for (;;) {
- ObjectWaiter::TStates v = SelfNode->TState;
- guarantee(v == ObjectWaiter::TS_ENTER || v == ObjectWaiter::TS_CXQ, "invariant");
- assert(_owner != Self, "invariant");
-
- if (TryLock(Self) > 0) break;
- if (TrySpin(Self) > 0) break;
+ int nWakeups = 0;
+ for (;;) {
+ ObjectWaiter::TStates v = SelfNode->TState;
+ guarantee(v == ObjectWaiter::TS_ENTER || v == ObjectWaiter::TS_CXQ, "invariant");
+ assert(_owner != Self, "invariant");
- TEVENT(Wait Reentry - parking);
+ if (TryLock(Self) > 0) break;
+ if (TrySpin(Self) > 0) break;
- // State transition wrappers around park() ...
- // ReenterI() wisely defers state transitions until
- // it's clear we must park the thread.
- {
- OSThreadContendState osts(Self->osthread());
- ThreadBlockInVM tbivm(jt);
+ TEVENT(Wait Reentry - parking);
- // cleared by handle_special_suspend_equivalent_condition()
- // or java_suspend_self()
- jt->set_suspend_equivalent();
- if (SyncFlags & 1) {
- Self->_ParkEvent->park((jlong)1000);
- } else {
- Self->_ParkEvent->park();
- }
-
- // were we externally suspended while we were waiting?
- for (;;) {
- if (!ExitSuspendEquivalent(jt)) break;
- if (_succ == Self) { _succ = NULL; OrderAccess::fence(); }
- jt->java_suspend_self();
- jt->set_suspend_equivalent();
- }
- }
+ // State transition wrappers around park() ...
+ // ReenterI() wisely defers state transitions until
+ // it's clear we must park the thread.
+ {
+ OSThreadContendState osts(Self->osthread());
+ ThreadBlockInVM tbivm(jt);
- // Try again, but just so we distinguish between futile wakeups and
- // successful wakeups. The following test isn't algorithmically
- // necessary, but it helps us maintain sensible statistics.
- if (TryLock(Self) > 0) break;
+ // cleared by handle_special_suspend_equivalent_condition()
+ // or java_suspend_self()
+ jt->set_suspend_equivalent();
+ if (SyncFlags & 1) {
+ Self->_ParkEvent->park((jlong)1000);
+ } else {
+ Self->_ParkEvent->park();
+ }
- // The lock is still contested.
- // Keep a tally of the # of futile wakeups.
- // Note that the counter is not protected by a lock or updated by atomics.
- // That is by design - we trade "lossy" counters which are exposed to
- // races during updates for a lower probe effect.
- TEVENT(Wait Reentry - futile wakeup);
- ++nWakeups;
-
- // Assuming this is not a spurious wakeup we'll normally
- // find that _succ == Self.
- if (_succ == Self) _succ = NULL;
-
- // Invariant: after clearing _succ a contending thread
- // *must* retry _owner before parking.
- OrderAccess::fence();
-
- if (ObjectMonitor::_sync_FutileWakeups != NULL) {
- ObjectMonitor::_sync_FutileWakeups->inc();
- }
+ // were we externally suspended while we were waiting?
+ for (;;) {
+ if (!ExitSuspendEquivalent(jt)) break;
+ if (_succ == Self) { _succ = NULL; OrderAccess::fence(); }
+ jt->java_suspend_self();
+ jt->set_suspend_equivalent();
+ }
}
- // Self has acquired the lock -- Unlink Self from the cxq or EntryList .
- // Normally we'll find Self on the EntryList.
- // Unlinking from the EntryList is constant-time and atomic-free.
- // From the perspective of the lock owner (this thread), the
- // EntryList is stable and cxq is prepend-only.
- // The head of cxq is volatile but the interior is stable.
- // In addition, Self.TState is stable.
+ // Try again, but just so we distinguish between futile wakeups and
+ // successful wakeups. The following test isn't algorithmically
+ // necessary, but it helps us maintain sensible statistics.
+ if (TryLock(Self) > 0) break;
+
+ // The lock is still contested.
+ // Keep a tally of the # of futile wakeups.
+ // Note that the counter is not protected by a lock or updated by atomics.
+ // That is by design - we trade "lossy" counters which are exposed to
+ // races during updates for a lower probe effect.
+ TEVENT(Wait Reentry - futile wakeup);
+ ++nWakeups;
+
+ // Assuming this is not a spurious wakeup we'll normally
+ // find that _succ == Self.
+ if (_succ == Self) _succ = NULL;
+
+ // Invariant: after clearing _succ a contending thread
+ // *must* retry _owner before parking.
+ OrderAccess::fence();
- assert(_owner == Self, "invariant");
- assert(((oop)(object()))->mark() == markOopDesc::encode(this), "invariant");
- UnlinkAfterAcquire(Self, SelfNode);
- if (_succ == Self) _succ = NULL;
- assert(_succ != Self, "invariant");
- SelfNode->TState = ObjectWaiter::TS_RUN;
- OrderAccess::fence(); // see comments at the end of EnterI()
+ if (ObjectMonitor::_sync_FutileWakeups != NULL) {
+ ObjectMonitor::_sync_FutileWakeups->inc();
+ }
+ }
+
+ // Self has acquired the lock -- Unlink Self from the cxq or EntryList .
+ // Normally we'll find Self on the EntryList.
+ // Unlinking from the EntryList is constant-time and atomic-free.
+ // From the perspective of the lock owner (this thread), the
+ // EntryList is stable and cxq is prepend-only.
+ // The head of cxq is volatile but the interior is stable.
+ // In addition, Self.TState is stable.
+
+ assert(_owner == Self, "invariant");
+ assert(((oop)(object()))->mark() == markOopDesc::encode(this), "invariant");
+ UnlinkAfterAcquire(Self, SelfNode);
+ if (_succ == Self) _succ = NULL;
+ assert(_succ != Self, "invariant");
+ SelfNode->TState = ObjectWaiter::TS_RUN;
+ OrderAccess::fence(); // see comments at the end of EnterI()
}
// By convention we unlink a contending thread from EntryList|cxq immediately
// after the thread acquires the lock in ::enter(). Equally, we could defer
// unlinking the thread until ::exit()-time.
-void ObjectMonitor::UnlinkAfterAcquire (Thread * Self, ObjectWaiter * SelfNode)
-{
- assert(_owner == Self, "invariant");
- assert(SelfNode->_thread == Self, "invariant");
+void ObjectMonitor::UnlinkAfterAcquire(Thread *Self, ObjectWaiter *SelfNode) {
+ assert(_owner == Self, "invariant");
+ assert(SelfNode->_thread == Self, "invariant");
- if (SelfNode->TState == ObjectWaiter::TS_ENTER) {
- // Normal case: remove Self from the DLL EntryList .
- // This is a constant-time operation.
- ObjectWaiter * nxt = SelfNode->_next;
- ObjectWaiter * prv = SelfNode->_prev;
- if (nxt != NULL) nxt->_prev = prv;
- if (prv != NULL) prv->_next = nxt;
- if (SelfNode == _EntryList) _EntryList = nxt;
- assert(nxt == NULL || nxt->TState == ObjectWaiter::TS_ENTER, "invariant");
- assert(prv == NULL || prv->TState == ObjectWaiter::TS_ENTER, "invariant");
- TEVENT(Unlink from EntryList);
- } else {
- assert(SelfNode->TState == ObjectWaiter::TS_CXQ, "invariant");
- // Inopportune interleaving -- Self is still on the cxq.
- // This usually means the enqueue of self raced an exiting thread.
- // Normally we'll find Self near the front of the cxq, so
- // dequeueing is typically fast. If needbe we can accelerate
- // this with some MCS/CHL-like bidirectional list hints and advisory
- // back-links so dequeueing from the interior will normally operate
- // in constant-time.
- // Dequeue Self from either the head (with CAS) or from the interior
- // with a linear-time scan and normal non-atomic memory operations.
- // CONSIDER: if Self is on the cxq then simply drain cxq into EntryList
- // and then unlink Self from EntryList. We have to drain eventually,
- // so it might as well be now.
+ if (SelfNode->TState == ObjectWaiter::TS_ENTER) {
+ // Normal case: remove Self from the DLL EntryList .
+ // This is a constant-time operation.
+ ObjectWaiter * nxt = SelfNode->_next;
+ ObjectWaiter * prv = SelfNode->_prev;
+ if (nxt != NULL) nxt->_prev = prv;
+ if (prv != NULL) prv->_next = nxt;
+ if (SelfNode == _EntryList) _EntryList = nxt;
+ assert(nxt == NULL || nxt->TState == ObjectWaiter::TS_ENTER, "invariant");
+ assert(prv == NULL || prv->TState == ObjectWaiter::TS_ENTER, "invariant");
+ TEVENT(Unlink from EntryList);
+ } else {
+ assert(SelfNode->TState == ObjectWaiter::TS_CXQ, "invariant");
+ // Inopportune interleaving -- Self is still on the cxq.
+ // This usually means the enqueue of self raced an exiting thread.
+ // Normally we'll find Self near the front of the cxq, so
+ // dequeueing is typically fast. If needbe we can accelerate
+ // this with some MCS/CHL-like bidirectional list hints and advisory
+ // back-links so dequeueing from the interior will normally operate
+ // in constant-time.
+ // Dequeue Self from either the head (with CAS) or from the interior
+ // with a linear-time scan and normal non-atomic memory operations.
+ // CONSIDER: if Self is on the cxq then simply drain cxq into EntryList
+ // and then unlink Self from EntryList. We have to drain eventually,
+ // so it might as well be now.
- ObjectWaiter * v = _cxq;
- assert(v != NULL, "invariant");
- if (v != SelfNode || Atomic::cmpxchg_ptr (SelfNode->_next, &_cxq, v) != v) {
- // The CAS above can fail from interference IFF a "RAT" arrived.
- // In that case Self must be in the interior and can no longer be
- // at the head of cxq.
- if (v == SelfNode) {
- assert(_cxq != v, "invariant");
- v = _cxq; // CAS above failed - start scan at head of list
- }
- ObjectWaiter * p;
- ObjectWaiter * q = NULL;
- for (p = v; p != NULL && p != SelfNode; p = p->_next) {
- q = p;
- assert(p->TState == ObjectWaiter::TS_CXQ, "invariant");
- }
- assert(v != SelfNode, "invariant");
- assert(p == SelfNode, "Node not found on cxq");
- assert(p != _cxq, "invariant");
- assert(q != NULL, "invariant");
- assert(q->_next == p, "invariant");
- q->_next = p->_next;
- }
- TEVENT(Unlink from cxq);
+ ObjectWaiter * v = _cxq;
+ assert(v != NULL, "invariant");
+ if (v != SelfNode || Atomic::cmpxchg_ptr (SelfNode->_next, &_cxq, v) != v) {
+ // The CAS above can fail from interference IFF a "RAT" arrived.
+ // In that case Self must be in the interior and can no longer be
+ // at the head of cxq.
+ if (v == SelfNode) {
+ assert(_cxq != v, "invariant");
+ v = _cxq; // CAS above failed - start scan at head of list
+ }
+ ObjectWaiter * p;
+ ObjectWaiter * q = NULL;
+ for (p = v; p != NULL && p != SelfNode; p = p->_next) {
+ q = p;
+ assert(p->TState == ObjectWaiter::TS_CXQ, "invariant");
+ }
+ assert(v != SelfNode, "invariant");
+ assert(p == SelfNode, "Node not found on cxq");
+ assert(p != _cxq, "invariant");
+ assert(q != NULL, "invariant");
+ assert(q->_next == p, "invariant");
+ q->_next = p->_next;
}
+ TEVENT(Unlink from cxq);
+ }
#ifdef ASSERT
- // Diagnostic hygiene ...
- SelfNode->_prev = (ObjectWaiter *) 0xBAD;
- SelfNode->_next = (ObjectWaiter *) 0xBAD;
- SelfNode->TState = ObjectWaiter::TS_RUN;
+ // Diagnostic hygiene ...
+ SelfNode->_prev = (ObjectWaiter *) 0xBAD;
+ SelfNode->_next = (ObjectWaiter *) 0xBAD;
+ SelfNode->TState = ObjectWaiter::TS_RUN;
#endif
}
@@ -915,331 +912,332 @@
// of such futile wakups is low.
void NOINLINE ObjectMonitor::exit(bool not_suspended, TRAPS) {
- Thread * const Self = THREAD;
- if (THREAD != _owner) {
- if (THREAD->is_lock_owned((address) _owner)) {
- // Transmute _owner from a BasicLock pointer to a Thread address.
- // We don't need to hold _mutex for this transition.
- // Non-null to Non-null is safe as long as all readers can
- // tolerate either flavor.
- assert(_recursions == 0, "invariant");
- _owner = THREAD;
- _recursions = 0;
- OwnerIsThread = 1;
- } else {
- // Apparent unbalanced locking ...
- // Naively we'd like to throw IllegalMonitorStateException.
- // As a practical matter we can neither allocate nor throw an
- // exception as ::exit() can be called from leaf routines.
- // see x86_32.ad Fast_Unlock() and the I1 and I2 properties.
- // Upon deeper reflection, however, in a properly run JVM the only
- // way we should encounter this situation is in the presence of
- // unbalanced JNI locking. TODO: CheckJNICalls.
- // See also: CR4414101
- TEVENT(Exit - Throw IMSX);
- assert(false, "Non-balanced monitor enter/exit! Likely JNI locking");
- return;
- }
- }
+ Thread * const Self = THREAD;
+ if (THREAD != _owner) {
+ if (THREAD->is_lock_owned((address) _owner)) {
+ // Transmute _owner from a BasicLock pointer to a Thread address.
+ // We don't need to hold _mutex for this transition.
+ // Non-null to Non-null is safe as long as all readers can
+ // tolerate either flavor.
+ assert(_recursions == 0, "invariant");
+ _owner = THREAD;
+ _recursions = 0;
+ OwnerIsThread = 1;
+ } else {
+ // Apparent unbalanced locking ...
+ // Naively we'd like to throw IllegalMonitorStateException.
+ // As a practical matter we can neither allocate nor throw an
+ // exception as ::exit() can be called from leaf routines.
+ // see x86_32.ad Fast_Unlock() and the I1 and I2 properties.
+ // Upon deeper reflection, however, in a properly run JVM the only
+ // way we should encounter this situation is in the presence of
+ // unbalanced JNI locking. TODO: CheckJNICalls.
+ // See also: CR4414101
+ TEVENT(Exit - Throw IMSX);
+ assert(false, "Non-balanced monitor enter/exit! Likely JNI locking");
+ return;
+ }
+ }
- if (_recursions != 0) {
- _recursions--; // this is simple recursive enter
- TEVENT(Inflated exit - recursive);
- return;
- }
+ if (_recursions != 0) {
+ _recursions--; // this is simple recursive enter
+ TEVENT(Inflated exit - recursive);
+ return;
+ }
- // Invariant: after setting Responsible=null an thread must execute
- // a MEMBAR or other serializing instruction before fetching EntryList|cxq.
- if ((SyncFlags & 4) == 0) {
- _Responsible = NULL;
- }
+ // Invariant: after setting Responsible=null an thread must execute
+ // a MEMBAR or other serializing instruction before fetching EntryList|cxq.
+ if ((SyncFlags & 4) == 0) {
+ _Responsible = NULL;
+ }
#if INCLUDE_TRACE
- // get the owner's thread id for the MonitorEnter event
- // if it is enabled and the thread isn't suspended
- if (not_suspended && Tracing::is_event_enabled(TraceJavaMonitorEnterEvent)) {
- _previous_owner_tid = SharedRuntime::get_java_tid(Self);
- }
+ // get the owner's thread id for the MonitorEnter event
+ // if it is enabled and the thread isn't suspended
+ if (not_suspended && Tracing::is_event_enabled(TraceJavaMonitorEnterEvent)) {
+ _previous_owner_tid = SharedRuntime::get_java_tid(Self);
+ }
#endif
- for (;;) {
- assert(THREAD == _owner, "invariant");
+ for (;;) {
+ assert(THREAD == _owner, "invariant");
- if (Knob_ExitPolicy == 0) {
- // release semantics: prior loads and stores from within the critical section
- // must not float (reorder) past the following store that drops the lock.
- // On SPARC that requires MEMBAR #loadstore|#storestore.
- // But of course in TSO #loadstore|#storestore is not required.
- // I'd like to write one of the following:
- // A. OrderAccess::release() ; _owner = NULL
- // B. OrderAccess::loadstore(); OrderAccess::storestore(); _owner = NULL;
- // Unfortunately OrderAccess::release() and OrderAccess::loadstore() both
- // store into a _dummy variable. That store is not needed, but can result
- // in massive wasteful coherency traffic on classic SMP systems.
- // Instead, I use release_store(), which is implemented as just a simple
- // ST on x64, x86 and SPARC.
- OrderAccess::release_store_ptr(&_owner, NULL); // drop the lock
- OrderAccess::storeload(); // See if we need to wake a successor
- if ((intptr_t(_EntryList)|intptr_t(_cxq)) == 0 || _succ != NULL) {
- TEVENT(Inflated exit - simple egress);
- return;
- }
- TEVENT(Inflated exit - complex egress);
- // Other threads are blocked trying to acquire the lock.
+ if (Knob_ExitPolicy == 0) {
+ // release semantics: prior loads and stores from within the critical section
+ // must not float (reorder) past the following store that drops the lock.
+ // On SPARC that requires MEMBAR #loadstore|#storestore.
+ // But of course in TSO #loadstore|#storestore is not required.
+ // I'd like to write one of the following:
+ // A. OrderAccess::release() ; _owner = NULL
+ // B. OrderAccess::loadstore(); OrderAccess::storestore(); _owner = NULL;
+ // Unfortunately OrderAccess::release() and OrderAccess::loadstore() both
+ // store into a _dummy variable. That store is not needed, but can result
+ // in massive wasteful coherency traffic on classic SMP systems.
+ // Instead, I use release_store(), which is implemented as just a simple
+ // ST on x64, x86 and SPARC.
+ OrderAccess::release_store_ptr(&_owner, NULL); // drop the lock
+ OrderAccess::storeload(); // See if we need to wake a successor
+ if ((intptr_t(_EntryList)|intptr_t(_cxq)) == 0 || _succ != NULL) {
+ TEVENT(Inflated exit - simple egress);
+ return;
+ }
+ TEVENT(Inflated exit - complex egress);
+ // Other threads are blocked trying to acquire the lock.
+
+ // Normally the exiting thread is responsible for ensuring succession,
+ // but if other successors are ready or other entering threads are spinning
+ // then this thread can simply store NULL into _owner and exit without
+ // waking a successor. The existence of spinners or ready successors
+ // guarantees proper succession (liveness). Responsibility passes to the
+ // ready or running successors. The exiting thread delegates the duty.
+ // More precisely, if a successor already exists this thread is absolved
+ // of the responsibility of waking (unparking) one.
+ //
+ // The _succ variable is critical to reducing futile wakeup frequency.
+ // _succ identifies the "heir presumptive" thread that has been made
+ // ready (unparked) but that has not yet run. We need only one such
+ // successor thread to guarantee progress.
+ // See http://www.usenix.org/events/jvm01/full_papers/dice/dice.pdf
+ // section 3.3 "Futile Wakeup Throttling" for details.
+ //
+ // Note that spinners in Enter() also set _succ non-null.
+ // In the current implementation spinners opportunistically set
+ // _succ so that exiting threads might avoid waking a successor.
+ // Another less appealing alternative would be for the exiting thread
+ // to drop the lock and then spin briefly to see if a spinner managed
+ // to acquire the lock. If so, the exiting thread could exit
+ // immediately without waking a successor, otherwise the exiting
+ // thread would need to dequeue and wake a successor.
+ // (Note that we'd need to make the post-drop spin short, but no
+ // shorter than the worst-case round-trip cache-line migration time.
+ // The dropped lock needs to become visible to the spinner, and then
+ // the acquisition of the lock by the spinner must become visible to
+ // the exiting thread).
- // Normally the exiting thread is responsible for ensuring succession,
- // but if other successors are ready or other entering threads are spinning
- // then this thread can simply store NULL into _owner and exit without
- // waking a successor. The existence of spinners or ready successors
- // guarantees proper succession (liveness). Responsibility passes to the
- // ready or running successors. The exiting thread delegates the duty.
- // More precisely, if a successor already exists this thread is absolved
- // of the responsibility of waking (unparking) one.
- //
- // The _succ variable is critical to reducing futile wakeup frequency.
- // _succ identifies the "heir presumptive" thread that has been made
- // ready (unparked) but that has not yet run. We need only one such
- // successor thread to guarantee progress.
- // See http://www.usenix.org/events/jvm01/full_papers/dice/dice.pdf
- // section 3.3 "Futile Wakeup Throttling" for details.
- //
- // Note that spinners in Enter() also set _succ non-null.
- // In the current implementation spinners opportunistically set
- // _succ so that exiting threads might avoid waking a successor.
- // Another less appealing alternative would be for the exiting thread
- // to drop the lock and then spin briefly to see if a spinner managed
- // to acquire the lock. If so, the exiting thread could exit
- // immediately without waking a successor, otherwise the exiting
- // thread would need to dequeue and wake a successor.
- // (Note that we'd need to make the post-drop spin short, but no
- // shorter than the worst-case round-trip cache-line migration time.
- // The dropped lock needs to become visible to the spinner, and then
- // the acquisition of the lock by the spinner must become visible to
- // the exiting thread).
- //
+ // It appears that an heir-presumptive (successor) must be made ready.
+ // Only the current lock owner can manipulate the EntryList or
+ // drain _cxq, so we need to reacquire the lock. If we fail
+ // to reacquire the lock the responsibility for ensuring succession
+ // falls to the new owner.
+ //
+ if (Atomic::cmpxchg_ptr (THREAD, &_owner, NULL) != NULL) {
+ return;
+ }
+ TEVENT(Exit - Reacquired);
+ } else {
+ if ((intptr_t(_EntryList)|intptr_t(_cxq)) == 0 || _succ != NULL) {
+ OrderAccess::release_store_ptr(&_owner, NULL); // drop the lock
+ OrderAccess::storeload();
+ // Ratify the previously observed values.
+ if (_cxq == NULL || _succ != NULL) {
+ TEVENT(Inflated exit - simple egress);
+ return;
+ }
- // It appears that an heir-presumptive (successor) must be made ready.
- // Only the current lock owner can manipulate the EntryList or
- // drain _cxq, so we need to reacquire the lock. If we fail
- // to reacquire the lock the responsibility for ensuring succession
- // falls to the new owner.
- //
- if (Atomic::cmpxchg_ptr (THREAD, &_owner, NULL) != NULL) {
- return;
- }
- TEVENT(Exit - Reacquired);
+ // inopportune interleaving -- the exiting thread (this thread)
+ // in the fast-exit path raced an entering thread in the slow-enter
+ // path.
+ // We have two choices:
+ // A. Try to reacquire the lock.
+ // If the CAS() fails return immediately, otherwise
+ // we either restart/rerun the exit operation, or simply
+ // fall-through into the code below which wakes a successor.
+ // B. If the elements forming the EntryList|cxq are TSM
+ // we could simply unpark() the lead thread and return
+ // without having set _succ.
+ if (Atomic::cmpxchg_ptr (THREAD, &_owner, NULL) != NULL) {
+ TEVENT(Inflated exit - reacquired succeeded);
+ return;
+ }
+ TEVENT(Inflated exit - reacquired failed);
} else {
- if ((intptr_t(_EntryList)|intptr_t(_cxq)) == 0 || _succ != NULL) {
- OrderAccess::release_store_ptr(&_owner, NULL); // drop the lock
- OrderAccess::storeload();
- // Ratify the previously observed values.
- if (_cxq == NULL || _succ != NULL) {
- TEVENT(Inflated exit - simple egress);
- return;
- }
+ TEVENT(Inflated exit - complex egress);
+ }
+ }
+
+ guarantee(_owner == THREAD, "invariant");
+
+ ObjectWaiter * w = NULL;
+ int QMode = Knob_QMode;
- // inopportune interleaving -- the exiting thread (this thread)
- // in the fast-exit path raced an entering thread in the slow-enter
- // path.
- // We have two choices:
- // A. Try to reacquire the lock.
- // If the CAS() fails return immediately, otherwise
- // we either restart/rerun the exit operation, or simply
- // fall-through into the code below which wakes a successor.
- // B. If the elements forming the EntryList|cxq are TSM
- // we could simply unpark() the lead thread and return
- // without having set _succ.
- if (Atomic::cmpxchg_ptr (THREAD, &_owner, NULL) != NULL) {
- TEVENT(Inflated exit - reacquired succeeded);
- return;
- }
- TEVENT(Inflated exit - reacquired failed);
- } else {
- TEVENT(Inflated exit - complex egress);
- }
+ if (QMode == 2 && _cxq != NULL) {
+ // QMode == 2 : cxq has precedence over EntryList.
+ // Try to directly wake a successor from the cxq.
+ // If successful, the successor will need to unlink itself from cxq.
+ w = _cxq;
+ assert(w != NULL, "invariant");
+ assert(w->TState == ObjectWaiter::TS_CXQ, "Invariant");
+ ExitEpilog(Self, w);
+ return;
+ }
+
+ if (QMode == 3 && _cxq != NULL) {
+ // Aggressively drain cxq into EntryList at the first opportunity.
+ // This policy ensure that recently-run threads live at the head of EntryList.
+ // Drain _cxq into EntryList - bulk transfer.
+ // First, detach _cxq.
+ // The following loop is tantamount to: w = swap(&cxq, NULL)
+ w = _cxq;
+ for (;;) {
+ assert(w != NULL, "Invariant");
+ ObjectWaiter * u = (ObjectWaiter *) Atomic::cmpxchg_ptr(NULL, &_cxq, w);
+ if (u == w) break;
+ w = u;
+ }
+ assert(w != NULL, "invariant");
+
+ ObjectWaiter * q = NULL;
+ ObjectWaiter * p;
+ for (p = w; p != NULL; p = p->_next) {
+ guarantee(p->TState == ObjectWaiter::TS_CXQ, "Invariant");
+ p->TState = ObjectWaiter::TS_ENTER;
+ p->_prev = q;
+ q = p;
}
- guarantee(_owner == THREAD, "invariant");
-
- ObjectWaiter * w = NULL;
- int QMode = Knob_QMode;
-
- if (QMode == 2 && _cxq != NULL) {
- // QMode == 2 : cxq has precedence over EntryList.
- // Try to directly wake a successor from the cxq.
- // If successful, the successor will need to unlink itself from cxq.
- w = _cxq;
- assert(w != NULL, "invariant");
- assert(w->TState == ObjectWaiter::TS_CXQ, "Invariant");
- ExitEpilog(Self, w);
- return;
- }
-
- if (QMode == 3 && _cxq != NULL) {
- // Aggressively drain cxq into EntryList at the first opportunity.
- // This policy ensure that recently-run threads live at the head of EntryList.
- // Drain _cxq into EntryList - bulk transfer.
- // First, detach _cxq.
- // The following loop is tantamount to: w = swap (&cxq, NULL)
- w = _cxq;
- for (;;) {
- assert(w != NULL, "Invariant");
- ObjectWaiter * u = (ObjectWaiter *) Atomic::cmpxchg_ptr(NULL, &_cxq, w);
- if (u == w) break;
- w = u;
- }
- assert(w != NULL , "invariant");
-
- ObjectWaiter * q = NULL;
- ObjectWaiter * p;
- for (p = w; p != NULL; p = p->_next) {
- guarantee(p->TState == ObjectWaiter::TS_CXQ, "Invariant");
- p->TState = ObjectWaiter::TS_ENTER;
- p->_prev = q;
- q = p;
- }
-
- // Append the RATs to the EntryList
- // TODO: organize EntryList as a CDLL so we can locate the tail in constant-time.
- ObjectWaiter * Tail;
- for (Tail = _EntryList; Tail != NULL && Tail->_next != NULL; Tail = Tail->_next);
- if (Tail == NULL) {
- _EntryList = w;
- } else {
- Tail->_next = w;
- w->_prev = Tail;
- }
-
- // Fall thru into code that tries to wake a successor from EntryList
+ // Append the RATs to the EntryList
+ // TODO: organize EntryList as a CDLL so we can locate the tail in constant-time.
+ ObjectWaiter * Tail;
+ for (Tail = _EntryList; Tail != NULL && Tail->_next != NULL;
+ Tail = Tail->_next)
+ /* empty */;
+ if (Tail == NULL) {
+ _EntryList = w;
+ } else {
+ Tail->_next = w;
+ w->_prev = Tail;
}
- if (QMode == 4 && _cxq != NULL) {
- // Aggressively drain cxq into EntryList at the first opportunity.
- // This policy ensure that recently-run threads live at the head of EntryList.
-
- // Drain _cxq into EntryList - bulk transfer.
- // First, detach _cxq.
- // The following loop is tantamount to: w = swap (&cxq, NULL)
- w = _cxq;
- for (;;) {
- assert(w != NULL, "Invariant");
- ObjectWaiter * u = (ObjectWaiter *) Atomic::cmpxchg_ptr(NULL, &_cxq, w);
- if (u == w) break;
- w = u;
- }
- assert(w != NULL , "invariant");
-
- ObjectWaiter * q = NULL;
- ObjectWaiter * p;
- for (p = w; p != NULL; p = p->_next) {
- guarantee(p->TState == ObjectWaiter::TS_CXQ, "Invariant");
- p->TState = ObjectWaiter::TS_ENTER;
- p->_prev = q;
- q = p;
- }
+ // Fall thru into code that tries to wake a successor from EntryList
+ }
- // Prepend the RATs to the EntryList
- if (_EntryList != NULL) {
- q->_next = _EntryList;
- _EntryList->_prev = q;
- }
- _EntryList = w;
-
- // Fall thru into code that tries to wake a successor from EntryList
- }
-
- w = _EntryList;
- if (w != NULL) {
- // I'd like to write: guarantee (w->_thread != Self).
- // But in practice an exiting thread may find itself on the EntryList.
- // Let's say thread T1 calls O.wait(). Wait() enqueues T1 on O's waitset and
- // then calls exit(). Exit release the lock by setting O._owner to NULL.
- // Let's say T1 then stalls. T2 acquires O and calls O.notify(). The
- // notify() operation moves T1 from O's waitset to O's EntryList. T2 then
- // release the lock "O". T2 resumes immediately after the ST of null into
- // _owner, above. T2 notices that the EntryList is populated, so it
- // reacquires the lock and then finds itself on the EntryList.
- // Given all that, we have to tolerate the circumstance where "w" is
- // associated with Self.
- assert(w->TState == ObjectWaiter::TS_ENTER, "invariant");
- ExitEpilog(Self, w);
- return;
- }
-
- // If we find that both _cxq and EntryList are null then just
- // re-run the exit protocol from the top.
- w = _cxq;
- if (w == NULL) continue;
+ if (QMode == 4 && _cxq != NULL) {
+ // Aggressively drain cxq into EntryList at the first opportunity.
+ // This policy ensure that recently-run threads live at the head of EntryList.
// Drain _cxq into EntryList - bulk transfer.
// First, detach _cxq.
- // The following loop is tantamount to: w = swap (&cxq, NULL)
+ // The following loop is tantamount to: w = swap(&cxq, NULL)
+ w = _cxq;
for (;;) {
- assert(w != NULL, "Invariant");
- ObjectWaiter * u = (ObjectWaiter *) Atomic::cmpxchg_ptr(NULL, &_cxq, w);
- if (u == w) break;
- w = u;
+ assert(w != NULL, "Invariant");
+ ObjectWaiter * u = (ObjectWaiter *) Atomic::cmpxchg_ptr(NULL, &_cxq, w);
+ if (u == w) break;
+ w = u;
}
- TEVENT(Inflated exit - drain cxq into EntryList);
-
- assert(w != NULL , "invariant");
- assert(_EntryList == NULL , "invariant");
-
- // Convert the LIFO SLL anchored by _cxq into a DLL.
- // The list reorganization step operates in O(LENGTH(w)) time.
- // It's critical that this step operate quickly as
- // "Self" still holds the outer-lock, restricting parallelism
- // and effectively lengthening the critical section.
- // Invariant: s chases t chases u.
- // TODO-FIXME: consider changing EntryList from a DLL to a CDLL so
- // we have faster access to the tail.
+ assert(w != NULL, "invariant");
- if (QMode == 1) {
- // QMode == 1 : drain cxq to EntryList, reversing order
- // We also reverse the order of the list.
- ObjectWaiter * s = NULL;
- ObjectWaiter * t = w;
- ObjectWaiter * u = NULL;
- while (t != NULL) {
- guarantee(t->TState == ObjectWaiter::TS_CXQ, "invariant");
- t->TState = ObjectWaiter::TS_ENTER;
- u = t->_next;
- t->_prev = u;
- t->_next = s;
- s = t;
- t = u;
- }
- _EntryList = s;
- assert(s != NULL, "invariant");
- } else {
- // QMode == 0 or QMode == 2
- _EntryList = w;
- ObjectWaiter * q = NULL;
- ObjectWaiter * p;
- for (p = w; p != NULL; p = p->_next) {
- guarantee(p->TState == ObjectWaiter::TS_CXQ, "Invariant");
- p->TState = ObjectWaiter::TS_ENTER;
- p->_prev = q;
- q = p;
- }
+ ObjectWaiter * q = NULL;
+ ObjectWaiter * p;
+ for (p = w; p != NULL; p = p->_next) {
+ guarantee(p->TState == ObjectWaiter::TS_CXQ, "Invariant");
+ p->TState = ObjectWaiter::TS_ENTER;
+ p->_prev = q;
+ q = p;
}
- // In 1-0 mode we need: ST EntryList; MEMBAR #storestore; ST _owner = NULL
- // The MEMBAR is satisfied by the release_store() operation in ExitEpilog().
+ // Prepend the RATs to the EntryList
+ if (_EntryList != NULL) {
+ q->_next = _EntryList;
+ _EntryList->_prev = q;
+ }
+ _EntryList = w;
+
+ // Fall thru into code that tries to wake a successor from EntryList
+ }
- // See if we can abdicate to a spinner instead of waking a thread.
- // A primary goal of the implementation is to reduce the
- // context-switch rate.
- if (_succ != NULL) continue;
+ w = _EntryList;
+ if (w != NULL) {
+ // I'd like to write: guarantee (w->_thread != Self).
+ // But in practice an exiting thread may find itself on the EntryList.
+ // Let's say thread T1 calls O.wait(). Wait() enqueues T1 on O's waitset and
+ // then calls exit(). Exit release the lock by setting O._owner to NULL.
+ // Let's say T1 then stalls. T2 acquires O and calls O.notify(). The
+ // notify() operation moves T1 from O's waitset to O's EntryList. T2 then
+ // release the lock "O". T2 resumes immediately after the ST of null into
+ // _owner, above. T2 notices that the EntryList is populated, so it
+ // reacquires the lock and then finds itself on the EntryList.
+ // Given all that, we have to tolerate the circumstance where "w" is
+ // associated with Self.
+ assert(w->TState == ObjectWaiter::TS_ENTER, "invariant");
+ ExitEpilog(Self, w);
+ return;
+ }
+
+ // If we find that both _cxq and EntryList are null then just
+ // re-run the exit protocol from the top.
+ w = _cxq;
+ if (w == NULL) continue;
+
+ // Drain _cxq into EntryList - bulk transfer.
+ // First, detach _cxq.
+ // The following loop is tantamount to: w = swap(&cxq, NULL)
+ for (;;) {
+ assert(w != NULL, "Invariant");
+ ObjectWaiter * u = (ObjectWaiter *) Atomic::cmpxchg_ptr(NULL, &_cxq, w);
+ if (u == w) break;
+ w = u;
+ }
+ TEVENT(Inflated exit - drain cxq into EntryList);
+
+ assert(w != NULL, "invariant");
+ assert(_EntryList == NULL, "invariant");
- w = _EntryList;
- if (w != NULL) {
- guarantee(w->TState == ObjectWaiter::TS_ENTER, "invariant");
- ExitEpilog(Self, w);
- return;
+ // Convert the LIFO SLL anchored by _cxq into a DLL.
+ // The list reorganization step operates in O(LENGTH(w)) time.
+ // It's critical that this step operate quickly as
+ // "Self" still holds the outer-lock, restricting parallelism
+ // and effectively lengthening the critical section.
+ // Invariant: s chases t chases u.
+ // TODO-FIXME: consider changing EntryList from a DLL to a CDLL so
+ // we have faster access to the tail.
+
+ if (QMode == 1) {
+ // QMode == 1 : drain cxq to EntryList, reversing order
+ // We also reverse the order of the list.
+ ObjectWaiter * s = NULL;
+ ObjectWaiter * t = w;
+ ObjectWaiter * u = NULL;
+ while (t != NULL) {
+ guarantee(t->TState == ObjectWaiter::TS_CXQ, "invariant");
+ t->TState = ObjectWaiter::TS_ENTER;
+ u = t->_next;
+ t->_prev = u;
+ t->_next = s;
+ s = t;
+ t = u;
}
- }
+ _EntryList = s;
+ assert(s != NULL, "invariant");
+ } else {
+ // QMode == 0 or QMode == 2
+ _EntryList = w;
+ ObjectWaiter * q = NULL;
+ ObjectWaiter * p;
+ for (p = w; p != NULL; p = p->_next) {
+ guarantee(p->TState == ObjectWaiter::TS_CXQ, "Invariant");
+ p->TState = ObjectWaiter::TS_ENTER;
+ p->_prev = q;
+ q = p;
+ }
+ }
+
+ // In 1-0 mode we need: ST EntryList; MEMBAR #storestore; ST _owner = NULL
+ // The MEMBAR is satisfied by the release_store() operation in ExitEpilog().
+
+ // See if we can abdicate to a spinner instead of waking a thread.
+ // A primary goal of the implementation is to reduce the
+ // context-switch rate.
+ if (_succ != NULL) continue;
+
+ w = _EntryList;
+ if (w != NULL) {
+ guarantee(w->TState == ObjectWaiter::TS_ENTER, "invariant");
+ ExitEpilog(Self, w);
+ return;
+ }
+ }
}
// ExitSuspendEquivalent:
@@ -1277,53 +1275,53 @@
// decreased. - Dave
-bool ObjectMonitor::ExitSuspendEquivalent (JavaThread * jSelf) {
- const int Mode = Knob_FastHSSEC;
- if (Mode && !jSelf->is_external_suspend()) {
- assert(jSelf->is_suspend_equivalent(), "invariant");
- jSelf->clear_suspend_equivalent();
- if (2 == Mode) OrderAccess::storeload();
- if (!jSelf->is_external_suspend()) return false;
- // We raced a suspension -- fall thru into the slow path
- TEVENT(ExitSuspendEquivalent - raced);
- jSelf->set_suspend_equivalent();
- }
- return jSelf->handle_special_suspend_equivalent_condition();
+bool ObjectMonitor::ExitSuspendEquivalent(JavaThread * jSelf) {
+ const int Mode = Knob_FastHSSEC;
+ if (Mode && !jSelf->is_external_suspend()) {
+ assert(jSelf->is_suspend_equivalent(), "invariant");
+ jSelf->clear_suspend_equivalent();
+ if (2 == Mode) OrderAccess::storeload();
+ if (!jSelf->is_external_suspend()) return false;
+ // We raced a suspension -- fall thru into the slow path
+ TEVENT(ExitSuspendEquivalent - raced);
+ jSelf->set_suspend_equivalent();
+ }
+ return jSelf->handle_special_suspend_equivalent_condition();
}
-void ObjectMonitor::ExitEpilog (Thread * Self, ObjectWaiter * Wakee) {
- assert(_owner == Self, "invariant");
+void ObjectMonitor::ExitEpilog(Thread * Self, ObjectWaiter * Wakee) {
+ assert(_owner == Self, "invariant");
- // Exit protocol:
- // 1. ST _succ = wakee
- // 2. membar #loadstore|#storestore;
- // 2. ST _owner = NULL
- // 3. unpark(wakee)
+ // Exit protocol:
+ // 1. ST _succ = wakee
+ // 2. membar #loadstore|#storestore;
+ // 2. ST _owner = NULL
+ // 3. unpark(wakee)
- _succ = Knob_SuccEnabled ? Wakee->_thread : NULL;
- ParkEvent * Trigger = Wakee->_event;
+ _succ = Knob_SuccEnabled ? Wakee->_thread : NULL;
+ ParkEvent * Trigger = Wakee->_event;
- // Hygiene -- once we've set _owner = NULL we can't safely dereference Wakee again.
- // The thread associated with Wakee may have grabbed the lock and "Wakee" may be
- // out-of-scope (non-extant).
- Wakee = NULL;
+ // Hygiene -- once we've set _owner = NULL we can't safely dereference Wakee again.
+ // The thread associated with Wakee may have grabbed the lock and "Wakee" may be
+ // out-of-scope (non-extant).
+ Wakee = NULL;
- // Drop the lock
- OrderAccess::release_store_ptr(&_owner, NULL);
- OrderAccess::fence(); // ST _owner vs LD in unpark()
+ // Drop the lock
+ OrderAccess::release_store_ptr(&_owner, NULL);
+ OrderAccess::fence(); // ST _owner vs LD in unpark()
- if (SafepointSynchronize::do_call_back()) {
- TEVENT(unpark before SAFEPOINT);
- }
+ if (SafepointSynchronize::do_call_back()) {
+ TEVENT(unpark before SAFEPOINT);
+ }
- DTRACE_MONITOR_PROBE(contended__exit, this, object(), Self);
- Trigger->unpark();
+ DTRACE_MONITOR_PROBE(contended__exit, this, object(), Self);
+ Trigger->unpark();
- // Maintain stats and report events to JVMTI
- if (ObjectMonitor::_sync_Parks != NULL) {
- ObjectMonitor::_sync_Parks->inc();
- }
+ // Maintain stats and report events to JVMTI
+ if (ObjectMonitor::_sync_Parks != NULL) {
+ ObjectMonitor::_sync_Parks->inc();
+ }
}
@@ -1337,41 +1335,41 @@
// inflated monitor, e.g. the monitor can be inflated by a non-owning
// thread due to contention.
intptr_t ObjectMonitor::complete_exit(TRAPS) {
- Thread * const Self = THREAD;
- assert(Self->is_Java_thread(), "Must be Java thread!");
- JavaThread *jt = (JavaThread *)THREAD;
+ Thread * const Self = THREAD;
+ assert(Self->is_Java_thread(), "Must be Java thread!");
+ JavaThread *jt = (JavaThread *)THREAD;
- DeferredInitialize();
+ DeferredInitialize();
- if (THREAD != _owner) {
+ if (THREAD != _owner) {
if (THREAD->is_lock_owned ((address)_owner)) {
- assert(_recursions == 0, "internal state error");
- _owner = THREAD; /* Convert from basiclock addr to Thread addr */
- _recursions = 0;
- OwnerIsThread = 1;
+ assert(_recursions == 0, "internal state error");
+ _owner = THREAD; // Convert from basiclock addr to Thread addr
+ _recursions = 0;
+ OwnerIsThread = 1;
}
- }
+ }
- guarantee(Self == _owner, "complete_exit not owner");
- intptr_t save = _recursions; // record the old recursion count
- _recursions = 0; // set the recursion level to be 0
- exit(true, Self); // exit the monitor
- guarantee(_owner != Self, "invariant");
- return save;
+ guarantee(Self == _owner, "complete_exit not owner");
+ intptr_t save = _recursions; // record the old recursion count
+ _recursions = 0; // set the recursion level to be 0
+ exit(true, Self); // exit the monitor
+ guarantee(_owner != Self, "invariant");
+ return save;
}
// reenter() enters a lock and sets recursion count
// complete_exit/reenter operate as a wait without waiting
void ObjectMonitor::reenter(intptr_t recursions, TRAPS) {
- Thread * const Self = THREAD;
- assert(Self->is_Java_thread(), "Must be Java thread!");
- JavaThread *jt = (JavaThread *)THREAD;
+ Thread * const Self = THREAD;
+ assert(Self->is_Java_thread(), "Must be Java thread!");
+ JavaThread *jt = (JavaThread *)THREAD;
- guarantee(_owner != Self, "reenter already owner");
- enter(THREAD); // enter the monitor
- guarantee(_recursions == 0, "reenter recursion");
- _recursions = recursions;
- return;
+ guarantee(_owner != Self, "reenter already owner");
+ enter(THREAD); // enter the monitor
+ guarantee(_recursions == 0, "reenter recursion");
+ _recursions = recursions;
+ return;
}
@@ -1381,18 +1379,18 @@
// which use this (which is why we don't put this into check_slow and
// call it with a CHECK argument).
-#define CHECK_OWNER() \
- do { \
- if (THREAD != _owner) { \
- if (THREAD->is_lock_owned((address) _owner)) { \
- _owner = THREAD; /* Convert from basiclock addr to Thread addr */ \
- _recursions = 0; \
- OwnerIsThread = 1; \
- } else { \
- TEVENT(Throw IMSX); \
- THROW(vmSymbols::java_lang_IllegalMonitorStateException()); \
- } \
- } \
+#define CHECK_OWNER() \
+ do { \
+ if (THREAD != _owner) { \
+ if (THREAD->is_lock_owned((address) _owner)) { \
+ _owner = THREAD; /* Convert from basiclock addr to Thread addr */ \
+ _recursions = 0; \
+ OwnerIsThread = 1; \
+ } else { \
+ TEVENT(Throw IMSX); \
+ THROW(vmSymbols::java_lang_IllegalMonitorStateException()); \
+ } \
+ } \
} while (false)
// check_slow() is a misnomer. It's called to simply to throw an IMSX exception.
@@ -1404,17 +1402,17 @@
THROW_MSG(vmSymbols::java_lang_IllegalMonitorStateException(), "current thread not owner");
}
-static int Adjust (volatile int * adr, int dx) {
+static int Adjust(volatile int * adr, int dx) {
int v;
- for (v = *adr; Atomic::cmpxchg(v + dx, adr, v) != v; v = *adr);
+ for (v = *adr; Atomic::cmpxchg(v + dx, adr, v) != v; v = *adr) /* empty */;
return v;
}
// helper method for posting a monitor wait event
void ObjectMonitor::post_monitor_wait_event(EventJavaMonitorWait* event,
- jlong notifier_tid,
- jlong timeout,
- bool timedout) {
+ jlong notifier_tid,
+ jlong timeout,
+ bool timedout) {
event->set_klass(((oop)this->object())->klass());
event->set_timeout((TYPE_ULONG)timeout);
event->set_address((TYPE_ADDRESS)(uintptr_t)(this->object_addr()));
@@ -1429,232 +1427,230 @@
// Note: a subset of changes to ObjectMonitor::wait()
// will need to be replicated in complete_exit
void ObjectMonitor::wait(jlong millis, bool interruptible, TRAPS) {
- Thread * const Self = THREAD;
- assert(Self->is_Java_thread(), "Must be Java thread!");
- JavaThread *jt = (JavaThread *)THREAD;
+ Thread * const Self = THREAD;
+ assert(Self->is_Java_thread(), "Must be Java thread!");
+ JavaThread *jt = (JavaThread *)THREAD;
- DeferredInitialize();
+ DeferredInitialize();
- // Throw IMSX or IEX.
- CHECK_OWNER();
+ // Throw IMSX or IEX.
+ CHECK_OWNER();
- EventJavaMonitorWait event;
+ EventJavaMonitorWait event;
- // check for a pending interrupt
- if (interruptible && Thread::is_interrupted(Self, true) && !HAS_PENDING_EXCEPTION) {
- // post monitor waited event. Note that this is past-tense, we are done waiting.
- if (JvmtiExport::should_post_monitor_waited()) {
- // Note: 'false' parameter is passed here because the
- // wait was not timed out due to thread interrupt.
- JvmtiExport::post_monitor_waited(jt, this, false);
+ // check for a pending interrupt
+ if (interruptible && Thread::is_interrupted(Self, true) && !HAS_PENDING_EXCEPTION) {
+ // post monitor waited event. Note that this is past-tense, we are done waiting.
+ if (JvmtiExport::should_post_monitor_waited()) {
+ // Note: 'false' parameter is passed here because the
+ // wait was not timed out due to thread interrupt.
+ JvmtiExport::post_monitor_waited(jt, this, false);
- // In this short circuit of the monitor wait protocol, the
- // current thread never drops ownership of the monitor and
- // never gets added to the wait queue so the current thread
- // cannot be made the successor. This means that the
- // JVMTI_EVENT_MONITOR_WAITED event handler cannot accidentally
- // consume an unpark() meant for the ParkEvent associated with
- // this ObjectMonitor.
- }
- if (event.should_commit()) {
- post_monitor_wait_event(&event, 0, millis, false);
- }
- TEVENT(Wait - Throw IEX);
- THROW(vmSymbols::java_lang_InterruptedException());
- return;
- }
+ // In this short circuit of the monitor wait protocol, the
+ // current thread never drops ownership of the monitor and
+ // never gets added to the wait queue so the current thread
+ // cannot be made the successor. This means that the
+ // JVMTI_EVENT_MONITOR_WAITED event handler cannot accidentally
+ // consume an unpark() meant for the ParkEvent associated with
+ // this ObjectMonitor.
+ }
+ if (event.should_commit()) {
+ post_monitor_wait_event(&event, 0, millis, false);
+ }
+ TEVENT(Wait - Throw IEX);
+ THROW(vmSymbols::java_lang_InterruptedException());
+ return;
+ }
- TEVENT(Wait);
+ TEVENT(Wait);
- assert(Self->_Stalled == 0, "invariant");
- Self->_Stalled = intptr_t(this);
- jt->set_current_waiting_monitor(this);
+ assert(Self->_Stalled == 0, "invariant");
+ Self->_Stalled = intptr_t(this);
+ jt->set_current_waiting_monitor(this);
- // create a node to be put into the queue
- // Critically, after we reset() the event but prior to park(), we must check
- // for a pending interrupt.
- ObjectWaiter node(Self);
- node.TState = ObjectWaiter::TS_WAIT;
- Self->_ParkEvent->reset();
- OrderAccess::fence(); // ST into Event; membar ; LD interrupted-flag
+ // create a node to be put into the queue
+ // Critically, after we reset() the event but prior to park(), we must check
+ // for a pending interrupt.
+ ObjectWaiter node(Self);
+ node.TState = ObjectWaiter::TS_WAIT;
+ Self->_ParkEvent->reset();
+ OrderAccess::fence(); // ST into Event; membar ; LD interrupted-flag
- // Enter the waiting queue, which is a circular doubly linked list in this case
- // but it could be a priority queue or any data structure.
- // _WaitSetLock protects the wait queue. Normally the wait queue is accessed only
- // by the the owner of the monitor *except* in the case where park()
- // returns because of a timeout of interrupt. Contention is exceptionally rare
- // so we use a simple spin-lock instead of a heavier-weight blocking lock.
+ // Enter the waiting queue, which is a circular doubly linked list in this case
+ // but it could be a priority queue or any data structure.
+ // _WaitSetLock protects the wait queue. Normally the wait queue is accessed only
+ // by the the owner of the monitor *except* in the case where park()
+ // returns because of a timeout of interrupt. Contention is exceptionally rare
+ // so we use a simple spin-lock instead of a heavier-weight blocking lock.
- Thread::SpinAcquire(&_WaitSetLock, "WaitSet - add");
- AddWaiter(&node);
- Thread::SpinRelease(&_WaitSetLock);
+ Thread::SpinAcquire(&_WaitSetLock, "WaitSet - add");
+ AddWaiter(&node);
+ Thread::SpinRelease(&_WaitSetLock);
- if ((SyncFlags & 4) == 0) {
- _Responsible = NULL;
- }
- intptr_t save = _recursions; // record the old recursion count
- _waiters++; // increment the number of waiters
- _recursions = 0; // set the recursion level to be 1
- exit(true, Self); // exit the monitor
- guarantee(_owner != Self, "invariant");
+ if ((SyncFlags & 4) == 0) {
+ _Responsible = NULL;
+ }
+ intptr_t save = _recursions; // record the old recursion count
+ _waiters++; // increment the number of waiters
+ _recursions = 0; // set the recursion level to be 1
+ exit(true, Self); // exit the monitor
+ guarantee(_owner != Self, "invariant");
- // The thread is on the WaitSet list - now park() it.
- // On MP systems it's conceivable that a brief spin before we park
- // could be profitable.
- //
- // TODO-FIXME: change the following logic to a loop of the form
- // while (!timeout && !interrupted && _notified == 0) park()
+ // The thread is on the WaitSet list - now park() it.
+ // On MP systems it's conceivable that a brief spin before we park
+ // could be profitable.
+ //
+ // TODO-FIXME: change the following logic to a loop of the form
+ // while (!timeout && !interrupted && _notified == 0) park()
- int ret = OS_OK;
- int WasNotified = 0;
- { // State transition wrappers
- OSThread* osthread = Self->osthread();
- OSThreadWaitState osts(osthread, true);
- {
- ThreadBlockInVM tbivm(jt);
- // Thread is in thread_blocked state and oop access is unsafe.
- jt->set_suspend_equivalent();
+ int ret = OS_OK;
+ int WasNotified = 0;
+ { // State transition wrappers
+ OSThread* osthread = Self->osthread();
+ OSThreadWaitState osts(osthread, true);
+ {
+ ThreadBlockInVM tbivm(jt);
+ // Thread is in thread_blocked state and oop access is unsafe.
+ jt->set_suspend_equivalent();
- if (interruptible && (Thread::is_interrupted(THREAD, false) || HAS_PENDING_EXCEPTION)) {
- // Intentionally empty
- } else
- if (node._notified == 0) {
- if (millis <= 0) {
- Self->_ParkEvent->park();
- } else {
- ret = Self->_ParkEvent->park(millis);
- }
- }
+ if (interruptible && (Thread::is_interrupted(THREAD, false) || HAS_PENDING_EXCEPTION)) {
+ // Intentionally empty
+ } else if (node._notified == 0) {
+ if (millis <= 0) {
+ Self->_ParkEvent->park();
+ } else {
+ ret = Self->_ParkEvent->park(millis);
+ }
+ }
- // were we externally suspended while we were waiting?
- if (ExitSuspendEquivalent (jt)) {
- // TODO-FIXME: add -- if succ == Self then succ = null.
- jt->java_suspend_self();
- }
+ // were we externally suspended while we were waiting?
+ if (ExitSuspendEquivalent (jt)) {
+ // TODO-FIXME: add -- if succ == Self then succ = null.
+ jt->java_suspend_self();
+ }
- } // Exit thread safepoint: transition _thread_blocked -> _thread_in_vm
-
+ } // Exit thread safepoint: transition _thread_blocked -> _thread_in_vm
- // Node may be on the WaitSet, the EntryList (or cxq), or in transition
- // from the WaitSet to the EntryList.
- // See if we need to remove Node from the WaitSet.
- // We use double-checked locking to avoid grabbing _WaitSetLock
- // if the thread is not on the wait queue.
- //
- // Note that we don't need a fence before the fetch of TState.
- // In the worst case we'll fetch a old-stale value of TS_WAIT previously
- // written by the is thread. (perhaps the fetch might even be satisfied
- // by a look-aside into the processor's own store buffer, although given
- // the length of the code path between the prior ST and this load that's
- // highly unlikely). If the following LD fetches a stale TS_WAIT value
- // then we'll acquire the lock and then re-fetch a fresh TState value.
- // That is, we fail toward safety.
+ // Node may be on the WaitSet, the EntryList (or cxq), or in transition
+ // from the WaitSet to the EntryList.
+ // See if we need to remove Node from the WaitSet.
+ // We use double-checked locking to avoid grabbing _WaitSetLock
+ // if the thread is not on the wait queue.
+ //
+ // Note that we don't need a fence before the fetch of TState.
+ // In the worst case we'll fetch a old-stale value of TS_WAIT previously
+ // written by the is thread. (perhaps the fetch might even be satisfied
+ // by a look-aside into the processor's own store buffer, although given
+ // the length of the code path between the prior ST and this load that's
+ // highly unlikely). If the following LD fetches a stale TS_WAIT value
+ // then we'll acquire the lock and then re-fetch a fresh TState value.
+ // That is, we fail toward safety.
- if (node.TState == ObjectWaiter::TS_WAIT) {
- Thread::SpinAcquire(&_WaitSetLock, "WaitSet - unlink");
- if (node.TState == ObjectWaiter::TS_WAIT) {
- DequeueSpecificWaiter(&node); // unlink from WaitSet
- assert(node._notified == 0, "invariant");
- node.TState = ObjectWaiter::TS_RUN;
- }
- Thread::SpinRelease(&_WaitSetLock);
- }
+ if (node.TState == ObjectWaiter::TS_WAIT) {
+ Thread::SpinAcquire(&_WaitSetLock, "WaitSet - unlink");
+ if (node.TState == ObjectWaiter::TS_WAIT) {
+ DequeueSpecificWaiter(&node); // unlink from WaitSet
+ assert(node._notified == 0, "invariant");
+ node.TState = ObjectWaiter::TS_RUN;
+ }
+ Thread::SpinRelease(&_WaitSetLock);
+ }
- // The thread is now either on off-list (TS_RUN),
- // on the EntryList (TS_ENTER), or on the cxq (TS_CXQ).
- // The Node's TState variable is stable from the perspective of this thread.
- // No other threads will asynchronously modify TState.
- guarantee(node.TState != ObjectWaiter::TS_WAIT, "invariant");
- OrderAccess::loadload();
- if (_succ == Self) _succ = NULL;
- WasNotified = node._notified;
+ // The thread is now either on off-list (TS_RUN),
+ // on the EntryList (TS_ENTER), or on the cxq (TS_CXQ).
+ // The Node's TState variable is stable from the perspective of this thread.
+ // No other threads will asynchronously modify TState.
+ guarantee(node.TState != ObjectWaiter::TS_WAIT, "invariant");
+ OrderAccess::loadload();
+ if (_succ == Self) _succ = NULL;
+ WasNotified = node._notified;
- // Reentry phase -- reacquire the monitor.
- // re-enter contended monitor after object.wait().
- // retain OBJECT_WAIT state until re-enter successfully completes
- // Thread state is thread_in_vm and oop access is again safe,
- // although the raw address of the object may have changed.
- // (Don't cache naked oops over safepoints, of course).
+ // Reentry phase -- reacquire the monitor.
+ // re-enter contended monitor after object.wait().
+ // retain OBJECT_WAIT state until re-enter successfully completes
+ // Thread state is thread_in_vm and oop access is again safe,
+ // although the raw address of the object may have changed.
+ // (Don't cache naked oops over safepoints, of course).
- // post monitor waited event. Note that this is past-tense, we are done waiting.
- if (JvmtiExport::should_post_monitor_waited()) {
- JvmtiExport::post_monitor_waited(jt, this, ret == OS_TIMEOUT);
+ // post monitor waited event. Note that this is past-tense, we are done waiting.
+ if (JvmtiExport::should_post_monitor_waited()) {
+ JvmtiExport::post_monitor_waited(jt, this, ret == OS_TIMEOUT);
- if (node._notified != 0 && _succ == Self) {
- // In this part of the monitor wait-notify-reenter protocol it
- // is possible (and normal) for another thread to do a fastpath
- // monitor enter-exit while this thread is still trying to get
- // to the reenter portion of the protocol.
- //
- // The ObjectMonitor was notified and the current thread is
- // the successor which also means that an unpark() has already
- // been done. The JVMTI_EVENT_MONITOR_WAITED event handler can
- // consume the unpark() that was done when the successor was
- // set because the same ParkEvent is shared between Java
- // monitors and JVM/TI RawMonitors (for now).
- //
- // We redo the unpark() to ensure forward progress, i.e., we
- // don't want all pending threads hanging (parked) with none
- // entering the unlocked monitor.
- node._event->unpark();
- }
- }
+ if (node._notified != 0 && _succ == Self) {
+ // In this part of the monitor wait-notify-reenter protocol it
+ // is possible (and normal) for another thread to do a fastpath
+ // monitor enter-exit while this thread is still trying to get
+ // to the reenter portion of the protocol.
+ //
+ // The ObjectMonitor was notified and the current thread is
+ // the successor which also means that an unpark() has already
+ // been done. The JVMTI_EVENT_MONITOR_WAITED event handler can
+ // consume the unpark() that was done when the successor was
+ // set because the same ParkEvent is shared between Java
+ // monitors and JVM/TI RawMonitors (for now).
+ //
+ // We redo the unpark() to ensure forward progress, i.e., we
+ // don't want all pending threads hanging (parked) with none
+ // entering the unlocked monitor.
+ node._event->unpark();
+ }
+ }
- if (event.should_commit()) {
- post_monitor_wait_event(&event, node._notifier_tid, millis, ret == OS_TIMEOUT);
- }
+ if (event.should_commit()) {
+ post_monitor_wait_event(&event, node._notifier_tid, millis, ret == OS_TIMEOUT);
+ }
- OrderAccess::fence();
+ OrderAccess::fence();
- assert(Self->_Stalled != 0, "invariant");
- Self->_Stalled = 0;
+ assert(Self->_Stalled != 0, "invariant");
+ Self->_Stalled = 0;
- assert(_owner != Self, "invariant");
- ObjectWaiter::TStates v = node.TState;
- if (v == ObjectWaiter::TS_RUN) {
- enter(Self);
- } else {
- guarantee(v == ObjectWaiter::TS_ENTER || v == ObjectWaiter::TS_CXQ, "invariant");
- ReenterI(Self, &node);
- node.wait_reenter_end(this);
- }
+ assert(_owner != Self, "invariant");
+ ObjectWaiter::TStates v = node.TState;
+ if (v == ObjectWaiter::TS_RUN) {
+ enter(Self);
+ } else {
+ guarantee(v == ObjectWaiter::TS_ENTER || v == ObjectWaiter::TS_CXQ, "invariant");
+ ReenterI(Self, &node);
+ node.wait_reenter_end(this);
+ }
- // Self has reacquired the lock.
- // Lifecycle - the node representing Self must not appear on any queues.
- // Node is about to go out-of-scope, but even if it were immortal we wouldn't
- // want residual elements associated with this thread left on any lists.
- guarantee(node.TState == ObjectWaiter::TS_RUN, "invariant");
- assert(_owner == Self, "invariant");
- assert(_succ != Self , "invariant");
- } // OSThreadWaitState()
+ // Self has reacquired the lock.
+ // Lifecycle - the node representing Self must not appear on any queues.
+ // Node is about to go out-of-scope, but even if it were immortal we wouldn't
+ // want residual elements associated with this thread left on any lists.
+ guarantee(node.TState == ObjectWaiter::TS_RUN, "invariant");
+ assert(_owner == Self, "invariant");
+ assert(_succ != Self, "invariant");
+ } // OSThreadWaitState()
- jt->set_current_waiting_monitor(NULL);
+ jt->set_current_waiting_monitor(NULL);
- guarantee(_recursions == 0, "invariant");
- _recursions = save; // restore the old recursion count
- _waiters--; // decrement the number of waiters
+ guarantee(_recursions == 0, "invariant");
+ _recursions = save; // restore the old recursion count
+ _waiters--; // decrement the number of waiters
- // Verify a few postconditions
- assert(_owner == Self , "invariant");
- assert(_succ != Self , "invariant");
- assert(((oop)(object()))->mark() == markOopDesc::encode(this), "invariant");
+ // Verify a few postconditions
+ assert(_owner == Self, "invariant");
+ assert(_succ != Self, "invariant");
+ assert(((oop)(object()))->mark() == markOopDesc::encode(this), "invariant");
- if (SyncFlags & 32) {
- OrderAccess::fence();
- }
+ if (SyncFlags & 32) {
+ OrderAccess::fence();
+ }
- // check if the notification happened
- if (!WasNotified) {
- // no, it could be timeout or Thread.interrupt() or both
- // check for interrupt event, otherwise it is timeout
- if (interruptible && Thread::is_interrupted(Self, true) && !HAS_PENDING_EXCEPTION) {
- TEVENT(Wait - throw IEX from epilog);
- THROW(vmSymbols::java_lang_InterruptedException());
- }
- }
+ // check if the notification happened
+ if (!WasNotified) {
+ // no, it could be timeout or Thread.interrupt() or both
+ // check for interrupt event, otherwise it is timeout
+ if (interruptible && Thread::is_interrupted(Self, true) && !HAS_PENDING_EXCEPTION) {
+ TEVENT(Wait - throw IEX from epilog);
+ THROW(vmSymbols::java_lang_InterruptedException());
+ }
+ }
- // NOTE: Spurious wake up will be consider as timeout.
- // Monitor notify has precedence over thread interrupt.
+ // NOTE: Spurious wake up will be consider as timeout.
+ // Monitor notify has precedence over thread interrupt.
}
@@ -1666,8 +1662,8 @@
void ObjectMonitor::notify(TRAPS) {
CHECK_OWNER();
if (_WaitSet == NULL) {
- TEVENT(Empty-Notify);
- return;
+ TEVENT(Empty-Notify);
+ return;
}
DTRACE_MONITOR_PROBE(notify, this, object(), THREAD);
@@ -1676,108 +1672,105 @@
Thread::SpinAcquire(&_WaitSetLock, "WaitSet - notify");
ObjectWaiter * iterator = DequeueWaiter();
if (iterator != NULL) {
- TEVENT(Notify1 - Transfer);
- guarantee(iterator->TState == ObjectWaiter::TS_WAIT, "invariant");
- guarantee(iterator->_notified == 0, "invariant");
- if (Policy != 4) {
- iterator->TState = ObjectWaiter::TS_ENTER;
- }
- iterator->_notified = 1;
- Thread * Self = THREAD;
- iterator->_notifier_tid = Self->osthread()->thread_id();
+ TEVENT(Notify1 - Transfer);
+ guarantee(iterator->TState == ObjectWaiter::TS_WAIT, "invariant");
+ guarantee(iterator->_notified == 0, "invariant");
+ if (Policy != 4) {
+ iterator->TState = ObjectWaiter::TS_ENTER;
+ }
+ iterator->_notified = 1;
+ Thread * Self = THREAD;
+ iterator->_notifier_tid = Self->osthread()->thread_id();
- ObjectWaiter * List = _EntryList;
- if (List != NULL) {
- assert(List->_prev == NULL, "invariant");
- assert(List->TState == ObjectWaiter::TS_ENTER, "invariant");
- assert(List != iterator, "invariant");
- }
+ ObjectWaiter * List = _EntryList;
+ if (List != NULL) {
+ assert(List->_prev == NULL, "invariant");
+ assert(List->TState == ObjectWaiter::TS_ENTER, "invariant");
+ assert(List != iterator, "invariant");
+ }
- if (Policy == 0) { // prepend to EntryList
- if (List == NULL) {
- iterator->_next = iterator->_prev = NULL;
- _EntryList = iterator;
- } else {
- List->_prev = iterator;
- iterator->_next = List;
- iterator->_prev = NULL;
- _EntryList = iterator;
- }
- } else
- if (Policy == 1) { // append to EntryList
- if (List == NULL) {
- iterator->_next = iterator->_prev = NULL;
- _EntryList = iterator;
- } else {
- // CONSIDER: finding the tail currently requires a linear-time walk of
- // the EntryList. We can make tail access constant-time by converting to
- // a CDLL instead of using our current DLL.
- ObjectWaiter * Tail;
- for (Tail = List; Tail->_next != NULL; Tail = Tail->_next);
- assert(Tail != NULL && Tail->_next == NULL, "invariant");
- Tail->_next = iterator;
- iterator->_prev = Tail;
- iterator->_next = NULL;
- }
- } else
- if (Policy == 2) { // prepend to cxq
- // prepend to cxq
- if (List == NULL) {
- iterator->_next = iterator->_prev = NULL;
- _EntryList = iterator;
- } else {
- iterator->TState = ObjectWaiter::TS_CXQ;
- for (;;) {
- ObjectWaiter * Front = _cxq;
- iterator->_next = Front;
- if (Atomic::cmpxchg_ptr (iterator, &_cxq, Front) == Front) {
- break;
- }
- }
- }
- } else
- if (Policy == 3) { // append to cxq
+ if (Policy == 0) { // prepend to EntryList
+ if (List == NULL) {
+ iterator->_next = iterator->_prev = NULL;
+ _EntryList = iterator;
+ } else {
+ List->_prev = iterator;
+ iterator->_next = List;
+ iterator->_prev = NULL;
+ _EntryList = iterator;
+ }
+ } else if (Policy == 1) { // append to EntryList
+ if (List == NULL) {
+ iterator->_next = iterator->_prev = NULL;
+ _EntryList = iterator;
+ } else {
+ // CONSIDER: finding the tail currently requires a linear-time walk of
+ // the EntryList. We can make tail access constant-time by converting to
+ // a CDLL instead of using our current DLL.
+ ObjectWaiter * Tail;
+ for (Tail = List; Tail->_next != NULL; Tail = Tail->_next) /* empty */;
+ assert(Tail != NULL && Tail->_next == NULL, "invariant");
+ Tail->_next = iterator;
+ iterator->_prev = Tail;
+ iterator->_next = NULL;
+ }
+ } else if (Policy == 2) { // prepend to cxq
+ // prepend to cxq
+ if (List == NULL) {
+ iterator->_next = iterator->_prev = NULL;
+ _EntryList = iterator;
+ } else {
iterator->TState = ObjectWaiter::TS_CXQ;
for (;;) {
- ObjectWaiter * Tail;
- Tail = _cxq;
- if (Tail == NULL) {
- iterator->_next = NULL;
- if (Atomic::cmpxchg_ptr (iterator, &_cxq, NULL) == NULL) {
- break;
- }
- } else {
- while (Tail->_next != NULL) Tail = Tail->_next;
- Tail->_next = iterator;
- iterator->_prev = Tail;
- iterator->_next = NULL;
- break;
- }
+ ObjectWaiter * Front = _cxq;
+ iterator->_next = Front;
+ if (Atomic::cmpxchg_ptr (iterator, &_cxq, Front) == Front) {
+ break;
+ }
}
- } else {
- ParkEvent * ev = iterator->_event;
- iterator->TState = ObjectWaiter::TS_RUN;
- OrderAccess::fence();
- ev->unpark();
- }
+ }
+ } else if (Policy == 3) { // append to cxq
+ iterator->TState = ObjectWaiter::TS_CXQ;
+ for (;;) {
+ ObjectWaiter * Tail;
+ Tail = _cxq;
+ if (Tail == NULL) {
+ iterator->_next = NULL;
+ if (Atomic::cmpxchg_ptr (iterator, &_cxq, NULL) == NULL) {
+ break;
+ }
+ } else {
+ while (Tail->_next != NULL) Tail = Tail->_next;
+ Tail->_next = iterator;
+ iterator->_prev = Tail;
+ iterator->_next = NULL;
+ break;
+ }
+ }
+ } else {
+ ParkEvent * ev = iterator->_event;
+ iterator->TState = ObjectWaiter::TS_RUN;
+ OrderAccess::fence();
+ ev->unpark();
+ }
- if (Policy < 4) {
- iterator->wait_reenter_begin(this);
- }
+ if (Policy < 4) {
+ iterator->wait_reenter_begin(this);
+ }
- // _WaitSetLock protects the wait queue, not the EntryList. We could
- // move the add-to-EntryList operation, above, outside the critical section
- // protected by _WaitSetLock. In practice that's not useful. With the
- // exception of wait() timeouts and interrupts the monitor owner
- // is the only thread that grabs _WaitSetLock. There's almost no contention
- // on _WaitSetLock so it's not profitable to reduce the length of the
- // critical section.
+ // _WaitSetLock protects the wait queue, not the EntryList. We could
+ // move the add-to-EntryList operation, above, outside the critical section
+ // protected by _WaitSetLock. In practice that's not useful. With the
+ // exception of wait() timeouts and interrupts the monitor owner
+ // is the only thread that grabs _WaitSetLock. There's almost no contention
+ // on _WaitSetLock so it's not profitable to reduce the length of the
+ // critical section.
}
Thread::SpinRelease(&_WaitSetLock);
if (iterator != NULL && ObjectMonitor::_sync_Notifications != NULL) {
- ObjectMonitor::_sync_Notifications->inc();
+ ObjectMonitor::_sync_Notifications->inc();
}
}
@@ -1786,8 +1779,8 @@
CHECK_OWNER();
ObjectWaiter* iterator;
if (_WaitSet == NULL) {
- TEVENT(Empty-NotifyAll);
- return;
+ TEVENT(Empty-NotifyAll);
+ return;
}
DTRACE_MONITOR_PROBE(notifyAll, this, object(), THREAD);
@@ -1796,112 +1789,109 @@
Thread::SpinAcquire(&_WaitSetLock, "WaitSet - notifyall");
for (;;) {
- iterator = DequeueWaiter();
- if (iterator == NULL) break;
- TEVENT(NotifyAll - Transfer1);
- ++Tally;
+ iterator = DequeueWaiter();
+ if (iterator == NULL) break;
+ TEVENT(NotifyAll - Transfer1);
+ ++Tally;
+
+ // Disposition - what might we do with iterator ?
+ // a. add it directly to the EntryList - either tail or head.
+ // b. push it onto the front of the _cxq.
+ // For now we use (a).
- // Disposition - what might we do with iterator ?
- // a. add it directly to the EntryList - either tail or head.
- // b. push it onto the front of the _cxq.
- // For now we use (a).
+ guarantee(iterator->TState == ObjectWaiter::TS_WAIT, "invariant");
+ guarantee(iterator->_notified == 0, "invariant");
+ iterator->_notified = 1;
+ Thread * Self = THREAD;
+ iterator->_notifier_tid = Self->osthread()->thread_id();
+ if (Policy != 4) {
+ iterator->TState = ObjectWaiter::TS_ENTER;
+ }
+
+ ObjectWaiter * List = _EntryList;
+ if (List != NULL) {
+ assert(List->_prev == NULL, "invariant");
+ assert(List->TState == ObjectWaiter::TS_ENTER, "invariant");
+ assert(List != iterator, "invariant");
+ }
- guarantee(iterator->TState == ObjectWaiter::TS_WAIT, "invariant");
- guarantee(iterator->_notified == 0, "invariant");
- iterator->_notified = 1;
- Thread * Self = THREAD;
- iterator->_notifier_tid = Self->osthread()->thread_id();
- if (Policy != 4) {
- iterator->TState = ObjectWaiter::TS_ENTER;
- }
-
- ObjectWaiter * List = _EntryList;
- if (List != NULL) {
- assert(List->_prev == NULL, "invariant");
- assert(List->TState == ObjectWaiter::TS_ENTER, "invariant");
- assert(List != iterator, "invariant");
- }
-
- if (Policy == 0) { // prepend to EntryList
- if (List == NULL) {
- iterator->_next = iterator->_prev = NULL;
- _EntryList = iterator;
- } else {
- List->_prev = iterator;
- iterator->_next = List;
- iterator->_prev = NULL;
- _EntryList = iterator;
+ if (Policy == 0) { // prepend to EntryList
+ if (List == NULL) {
+ iterator->_next = iterator->_prev = NULL;
+ _EntryList = iterator;
+ } else {
+ List->_prev = iterator;
+ iterator->_next = List;
+ iterator->_prev = NULL;
+ _EntryList = iterator;
+ }
+ } else if (Policy == 1) { // append to EntryList
+ if (List == NULL) {
+ iterator->_next = iterator->_prev = NULL;
+ _EntryList = iterator;
+ } else {
+ // CONSIDER: finding the tail currently requires a linear-time walk of
+ // the EntryList. We can make tail access constant-time by converting to
+ // a CDLL instead of using our current DLL.
+ ObjectWaiter * Tail;
+ for (Tail = List; Tail->_next != NULL; Tail = Tail->_next) /* empty */;
+ assert(Tail != NULL && Tail->_next == NULL, "invariant");
+ Tail->_next = iterator;
+ iterator->_prev = Tail;
+ iterator->_next = NULL;
+ }
+ } else if (Policy == 2) { // prepend to cxq
+ // prepend to cxq
+ iterator->TState = ObjectWaiter::TS_CXQ;
+ for (;;) {
+ ObjectWaiter * Front = _cxq;
+ iterator->_next = Front;
+ if (Atomic::cmpxchg_ptr (iterator, &_cxq, Front) == Front) {
+ break;
}
- } else
- if (Policy == 1) { // append to EntryList
- if (List == NULL) {
- iterator->_next = iterator->_prev = NULL;
- _EntryList = iterator;
- } else {
- // CONSIDER: finding the tail currently requires a linear-time walk of
- // the EntryList. We can make tail access constant-time by converting to
- // a CDLL instead of using our current DLL.
- ObjectWaiter * Tail;
- for (Tail = List; Tail->_next != NULL; Tail = Tail->_next);
- assert(Tail != NULL && Tail->_next == NULL, "invariant");
- Tail->_next = iterator;
- iterator->_prev = Tail;
- iterator->_next = NULL;
+ }
+ } else if (Policy == 3) { // append to cxq
+ iterator->TState = ObjectWaiter::TS_CXQ;
+ for (;;) {
+ ObjectWaiter * Tail;
+ Tail = _cxq;
+ if (Tail == NULL) {
+ iterator->_next = NULL;
+ if (Atomic::cmpxchg_ptr (iterator, &_cxq, NULL) == NULL) {
+ break;
+ }
+ } else {
+ while (Tail->_next != NULL) Tail = Tail->_next;
+ Tail->_next = iterator;
+ iterator->_prev = Tail;
+ iterator->_next = NULL;
+ break;
}
- } else
- if (Policy == 2) { // prepend to cxq
- // prepend to cxq
- iterator->TState = ObjectWaiter::TS_CXQ;
- for (;;) {
- ObjectWaiter * Front = _cxq;
- iterator->_next = Front;
- if (Atomic::cmpxchg_ptr (iterator, &_cxq, Front) == Front) {
- break;
- }
- }
- } else
- if (Policy == 3) { // append to cxq
- iterator->TState = ObjectWaiter::TS_CXQ;
- for (;;) {
- ObjectWaiter * Tail;
- Tail = _cxq;
- if (Tail == NULL) {
- iterator->_next = NULL;
- if (Atomic::cmpxchg_ptr (iterator, &_cxq, NULL) == NULL) {
- break;
- }
- } else {
- while (Tail->_next != NULL) Tail = Tail->_next;
- Tail->_next = iterator;
- iterator->_prev = Tail;
- iterator->_next = NULL;
- break;
- }
- }
- } else {
- ParkEvent * ev = iterator->_event;
- iterator->TState = ObjectWaiter::TS_RUN;
- OrderAccess::fence();
- ev->unpark();
- }
+ }
+ } else {
+ ParkEvent * ev = iterator->_event;
+ iterator->TState = ObjectWaiter::TS_RUN;
+ OrderAccess::fence();
+ ev->unpark();
+ }
- if (Policy < 4) {
- iterator->wait_reenter_begin(this);
- }
+ if (Policy < 4) {
+ iterator->wait_reenter_begin(this);
+ }
- // _WaitSetLock protects the wait queue, not the EntryList. We could
- // move the add-to-EntryList operation, above, outside the critical section
- // protected by _WaitSetLock. In practice that's not useful. With the
- // exception of wait() timeouts and interrupts the monitor owner
- // is the only thread that grabs _WaitSetLock. There's almost no contention
- // on _WaitSetLock so it's not profitable to reduce the length of the
- // critical section.
+ // _WaitSetLock protects the wait queue, not the EntryList. We could
+ // move the add-to-EntryList operation, above, outside the critical section
+ // protected by _WaitSetLock. In practice that's not useful. With the
+ // exception of wait() timeouts and interrupts the monitor owner
+ // is the only thread that grabs _WaitSetLock. There's almost no contention
+ // on _WaitSetLock so it's not profitable to reduce the length of the
+ // critical section.
}
Thread::SpinRelease(&_WaitSetLock);
if (Tally != 0 && ObjectMonitor::_sync_Notifications != NULL) {
- ObjectMonitor::_sync_Notifications->inc(Tally);
+ ObjectMonitor::_sync_Notifications->inc(Tally);
}
}
@@ -1969,7 +1959,6 @@
// situation is not dire. The state is benign -- there's no need to add
// hysteresis control to damp the transition rate between spinning and
// not spinning.
-//
intptr_t ObjectMonitor::SpinCallbackArgument = 0;
int (*ObjectMonitor::SpinCallbackFunction)(intptr_t, int) = NULL;
@@ -1977,229 +1966,228 @@
// Spinning: Fixed frequency (100%), vary duration
-int ObjectMonitor::TrySpin_VaryDuration (Thread * Self) {
+int ObjectMonitor::TrySpin_VaryDuration(Thread * Self) {
+ // Dumb, brutal spin. Good for comparative measurements against adaptive spinning.
+ int ctr = Knob_FixedSpin;
+ if (ctr != 0) {
+ while (--ctr >= 0) {
+ if (TryLock(Self) > 0) return 1;
+ SpinPause();
+ }
+ return 0;
+ }
+
+ for (ctr = Knob_PreSpin + 1; --ctr >= 0;) {
+ if (TryLock(Self) > 0) {
+ // Increase _SpinDuration ...
+ // Note that we don't clamp SpinDuration precisely at SpinLimit.
+ // Raising _SpurDuration to the poverty line is key.
+ int x = _SpinDuration;
+ if (x < Knob_SpinLimit) {
+ if (x < Knob_Poverty) x = Knob_Poverty;
+ _SpinDuration = x + Knob_BonusB;
+ }
+ return 1;
+ }
+ SpinPause();
+ }
+
+ // Admission control - verify preconditions for spinning
+ //
+ // We always spin a little bit, just to prevent _SpinDuration == 0 from
+ // becoming an absorbing state. Put another way, we spin briefly to
+ // sample, just in case the system load, parallelism, contention, or lock
+ // modality changed.
+ //
+ // Consider the following alternative:
+ // Periodically set _SpinDuration = _SpinLimit and try a long/full
+ // spin attempt. "Periodically" might mean after a tally of
+ // the # of failed spin attempts (or iterations) reaches some threshold.
+ // This takes us into the realm of 1-out-of-N spinning, where we
+ // hold the duration constant but vary the frequency.
+
+ ctr = _SpinDuration;
+ if (ctr < Knob_SpinBase) ctr = Knob_SpinBase;
+ if (ctr <= 0) return 0;
+
+ if (Knob_SuccRestrict && _succ != NULL) return 0;
+ if (Knob_OState && NotRunnable (Self, (Thread *) _owner)) {
+ TEVENT(Spin abort - notrunnable [TOP]);
+ return 0;
+ }
- // Dumb, brutal spin. Good for comparative measurements against adaptive spinning.
- int ctr = Knob_FixedSpin;
- if (ctr != 0) {
- while (--ctr >= 0) {
- if (TryLock(Self) > 0) return 1;
- SpinPause();
- }
- return 0;
+ int MaxSpin = Knob_MaxSpinners;
+ if (MaxSpin >= 0) {
+ if (_Spinner > MaxSpin) {
+ TEVENT(Spin abort -- too many spinners);
+ return 0;
+ }
+ // Slightly racy, but benign ...
+ Adjust(&_Spinner, 1);
+ }
+
+ // We're good to spin ... spin ingress.
+ // CONSIDER: use Prefetch::write() to avoid RTS->RTO upgrades
+ // when preparing to LD...CAS _owner, etc and the CAS is likely
+ // to succeed.
+ int hits = 0;
+ int msk = 0;
+ int caspty = Knob_CASPenalty;
+ int oxpty = Knob_OXPenalty;
+ int sss = Knob_SpinSetSucc;
+ if (sss && _succ == NULL) _succ = Self;
+ Thread * prv = NULL;
+
+ // There are three ways to exit the following loop:
+ // 1. A successful spin where this thread has acquired the lock.
+ // 2. Spin failure with prejudice
+ // 3. Spin failure without prejudice
+
+ while (--ctr >= 0) {
+
+ // Periodic polling -- Check for pending GC
+ // Threads may spin while they're unsafe.
+ // We don't want spinning threads to delay the JVM from reaching
+ // a stop-the-world safepoint or to steal cycles from GC.
+ // If we detect a pending safepoint we abort in order that
+ // (a) this thread, if unsafe, doesn't delay the safepoint, and (b)
+ // this thread, if safe, doesn't steal cycles from GC.
+ // This is in keeping with the "no loitering in runtime" rule.
+ // We periodically check to see if there's a safepoint pending.
+ if ((ctr & 0xFF) == 0) {
+ if (SafepointSynchronize::do_call_back()) {
+ TEVENT(Spin: safepoint);
+ goto Abort; // abrupt spin egress
+ }
+ if (Knob_UsePause & 1) SpinPause();
+
+ int (*scb)(intptr_t,int) = SpinCallbackFunction;
+ if (hits > 50 && scb != NULL) {
+ int abend = (*scb)(SpinCallbackArgument, 0);
+ }
}
- for (ctr = Knob_PreSpin + 1; --ctr >= 0;) {
- if (TryLock(Self) > 0) {
- // Increase _SpinDuration ...
+ if (Knob_UsePause & 2) SpinPause();
+
+ // Exponential back-off ... Stay off the bus to reduce coherency traffic.
+ // This is useful on classic SMP systems, but is of less utility on
+ // N1-style CMT platforms.
+ //
+ // Trade-off: lock acquisition latency vs coherency bandwidth.
+ // Lock hold times are typically short. A histogram
+ // of successful spin attempts shows that we usually acquire
+ // the lock early in the spin. That suggests we want to
+ // sample _owner frequently in the early phase of the spin,
+ // but then back-off and sample less frequently as the spin
+ // progresses. The back-off makes a good citizen on SMP big
+ // SMP systems. Oversampling _owner can consume excessive
+ // coherency bandwidth. Relatedly, if we _oversample _owner we
+ // can inadvertently interfere with the the ST m->owner=null.
+ // executed by the lock owner.
+ if (ctr & msk) continue;
+ ++hits;
+ if ((hits & 0xF) == 0) {
+ // The 0xF, above, corresponds to the exponent.
+ // Consider: (msk+1)|msk
+ msk = ((msk << 2)|3) & BackOffMask;
+ }
+
+ // Probe _owner with TATAS
+ // If this thread observes the monitor transition or flicker
+ // from locked to unlocked to locked, then the odds that this
+ // thread will acquire the lock in this spin attempt go down
+ // considerably. The same argument applies if the CAS fails
+ // or if we observe _owner change from one non-null value to
+ // another non-null value. In such cases we might abort
+ // the spin without prejudice or apply a "penalty" to the
+ // spin count-down variable "ctr", reducing it by 100, say.
+
+ Thread * ox = (Thread *) _owner;
+ if (ox == NULL) {
+ ox = (Thread *) Atomic::cmpxchg_ptr(Self, &_owner, NULL);
+ if (ox == NULL) {
+ // The CAS succeeded -- this thread acquired ownership
+ // Take care of some bookkeeping to exit spin state.
+ if (sss && _succ == Self) {
+ _succ = NULL;
+ }
+ if (MaxSpin > 0) Adjust(&_Spinner, -1);
+
+ // Increase _SpinDuration :
+ // The spin was successful (profitable) so we tend toward
+ // longer spin attempts in the future.
+ // CONSIDER: factor "ctr" into the _SpinDuration adjustment.
+ // If we acquired the lock early in the spin cycle it
+ // makes sense to increase _SpinDuration proportionally.
// Note that we don't clamp SpinDuration precisely at SpinLimit.
- // Raising _SpurDuration to the poverty line is key.
int x = _SpinDuration;
if (x < Knob_SpinLimit) {
- if (x < Knob_Poverty) x = Knob_Poverty;
- _SpinDuration = x + Knob_BonusB;
+ if (x < Knob_Poverty) x = Knob_Poverty;
+ _SpinDuration = x + Knob_Bonus;
}
return 1;
}
- SpinPause();
- }
- // Admission control - verify preconditions for spinning
- //
- // We always spin a little bit, just to prevent _SpinDuration == 0 from
- // becoming an absorbing state. Put another way, we spin briefly to
- // sample, just in case the system load, parallelism, contention, or lock
- // modality changed.
- //
- // Consider the following alternative:
- // Periodically set _SpinDuration = _SpinLimit and try a long/full
- // spin attempt. "Periodically" might mean after a tally of
- // the # of failed spin attempts (or iterations) reaches some threshold.
- // This takes us into the realm of 1-out-of-N spinning, where we
- // hold the duration constant but vary the frequency.
-
- ctr = _SpinDuration;
- if (ctr < Knob_SpinBase) ctr = Knob_SpinBase;
- if (ctr <= 0) return 0;
-
- if (Knob_SuccRestrict && _succ != NULL) return 0;
- if (Knob_OState && NotRunnable (Self, (Thread *) _owner)) {
- TEVENT(Spin abort - notrunnable [TOP]);
- return 0;
- }
-
- int MaxSpin = Knob_MaxSpinners;
- if (MaxSpin >= 0) {
- if (_Spinner > MaxSpin) {
- TEVENT(Spin abort -- too many spinners);
- return 0;
- }
- // Slightly racy, but benign ...
- Adjust(&_Spinner, 1);
+ // The CAS failed ... we can take any of the following actions:
+ // * penalize: ctr -= Knob_CASPenalty
+ // * exit spin with prejudice -- goto Abort;
+ // * exit spin without prejudice.
+ // * Since CAS is high-latency, retry again immediately.
+ prv = ox;
+ TEVENT(Spin: cas failed);
+ if (caspty == -2) break;
+ if (caspty == -1) goto Abort;
+ ctr -= caspty;
+ continue;
}
- // We're good to spin ... spin ingress.
- // CONSIDER: use Prefetch::write() to avoid RTS->RTO upgrades
- // when preparing to LD...CAS _owner, etc and the CAS is likely
- // to succeed.
- int hits = 0;
- int msk = 0;
- int caspty = Knob_CASPenalty;
- int oxpty = Knob_OXPenalty;
- int sss = Knob_SpinSetSucc;
- if (sss && _succ == NULL) _succ = Self;
- Thread * prv = NULL;
-
- // There are three ways to exit the following loop:
- // 1. A successful spin where this thread has acquired the lock.
- // 2. Spin failure with prejudice
- // 3. Spin failure without prejudice
-
- while (--ctr >= 0) {
-
- // Periodic polling -- Check for pending GC
- // Threads may spin while they're unsafe.
- // We don't want spinning threads to delay the JVM from reaching
- // a stop-the-world safepoint or to steal cycles from GC.
- // If we detect a pending safepoint we abort in order that
- // (a) this thread, if unsafe, doesn't delay the safepoint, and (b)
- // this thread, if safe, doesn't steal cycles from GC.
- // This is in keeping with the "no loitering in runtime" rule.
- // We periodically check to see if there's a safepoint pending.
- if ((ctr & 0xFF) == 0) {
- if (SafepointSynchronize::do_call_back()) {
- TEVENT(Spin: safepoint);
- goto Abort; // abrupt spin egress
- }
- if (Knob_UsePause & 1) SpinPause();
-
- int (*scb)(intptr_t,int) = SpinCallbackFunction;
- if (hits > 50 && scb != NULL) {
- int abend = (*scb)(SpinCallbackArgument, 0);
- }
- }
-
- if (Knob_UsePause & 2) SpinPause();
-
- // Exponential back-off ... Stay off the bus to reduce coherency traffic.
- // This is useful on classic SMP systems, but is of less utility on
- // N1-style CMT platforms.
- //
- // Trade-off: lock acquisition latency vs coherency bandwidth.
- // Lock hold times are typically short. A histogram
- // of successful spin attempts shows that we usually acquire
- // the lock early in the spin. That suggests we want to
- // sample _owner frequently in the early phase of the spin,
- // but then back-off and sample less frequently as the spin
- // progresses. The back-off makes a good citizen on SMP big
- // SMP systems. Oversampling _owner can consume excessive
- // coherency bandwidth. Relatedly, if we _oversample _owner we
- // can inadvertently interfere with the the ST m->owner=null.
- // executed by the lock owner.
- if (ctr & msk) continue;
- ++hits;
- if ((hits & 0xF) == 0) {
- // The 0xF, above, corresponds to the exponent.
- // Consider: (msk+1)|msk
- msk = ((msk << 2)|3) & BackOffMask;
- }
+ // Did lock ownership change hands ?
+ if (ox != prv && prv != NULL) {
+ TEVENT(spin: Owner changed)
+ if (oxpty == -2) break;
+ if (oxpty == -1) goto Abort;
+ ctr -= oxpty;
+ }
+ prv = ox;
- // Probe _owner with TATAS
- // If this thread observes the monitor transition or flicker
- // from locked to unlocked to locked, then the odds that this
- // thread will acquire the lock in this spin attempt go down
- // considerably. The same argument applies if the CAS fails
- // or if we observe _owner change from one non-null value to
- // another non-null value. In such cases we might abort
- // the spin without prejudice or apply a "penalty" to the
- // spin count-down variable "ctr", reducing it by 100, say.
-
- Thread * ox = (Thread *) _owner;
- if (ox == NULL) {
- ox = (Thread *) Atomic::cmpxchg_ptr(Self, &_owner, NULL);
- if (ox == NULL) {
- // The CAS succeeded -- this thread acquired ownership
- // Take care of some bookkeeping to exit spin state.
- if (sss && _succ == Self) {
- _succ = NULL;
- }
- if (MaxSpin > 0) Adjust(&_Spinner, -1);
-
- // Increase _SpinDuration :
- // The spin was successful (profitable) so we tend toward
- // longer spin attempts in the future.
- // CONSIDER: factor "ctr" into the _SpinDuration adjustment.
- // If we acquired the lock early in the spin cycle it
- // makes sense to increase _SpinDuration proportionally.
- // Note that we don't clamp SpinDuration precisely at SpinLimit.
- int x = _SpinDuration;
- if (x < Knob_SpinLimit) {
- if (x < Knob_Poverty) x = Knob_Poverty;
- _SpinDuration = x + Knob_Bonus;
- }
- return 1;
- }
+ // Abort the spin if the owner is not executing.
+ // The owner must be executing in order to drop the lock.
+ // Spinning while the owner is OFFPROC is idiocy.
+ // Consider: ctr -= RunnablePenalty ;
+ if (Knob_OState && NotRunnable (Self, ox)) {
+ TEVENT(Spin abort - notrunnable);
+ goto Abort;
+ }
+ if (sss && _succ == NULL) _succ = Self;
+ }
- // The CAS failed ... we can take any of the following actions:
- // * penalize: ctr -= Knob_CASPenalty
- // * exit spin with prejudice -- goto Abort;
- // * exit spin without prejudice.
- // * Since CAS is high-latency, retry again immediately.
- prv = ox;
- TEVENT(Spin: cas failed);
- if (caspty == -2) break;
- if (caspty == -1) goto Abort;
- ctr -= caspty;
- continue;
- }
-
- // Did lock ownership change hands ?
- if (ox != prv && prv != NULL) {
- TEVENT(spin: Owner changed)
- if (oxpty == -2) break;
- if (oxpty == -1) goto Abort;
- ctr -= oxpty;
- }
- prv = ox;
-
- // Abort the spin if the owner is not executing.
- // The owner must be executing in order to drop the lock.
- // Spinning while the owner is OFFPROC is idiocy.
- // Consider: ctr -= RunnablePenalty ;
- if (Knob_OState && NotRunnable (Self, ox)) {
- TEVENT(Spin abort - notrunnable);
- goto Abort;
- }
- if (sss && _succ == NULL) _succ = Self;
- }
-
- // Spin failed with prejudice -- reduce _SpinDuration.
- // TODO: Use an AIMD-like policy to adjust _SpinDuration.
- // AIMD is globally stable.
- TEVENT(Spin failure);
- {
- int x = _SpinDuration;
- if (x > 0) {
- // Consider an AIMD scheme like: x -= (x >> 3) + 100
- // This is globally sample and tends to damp the response.
- x -= Knob_Penalty;
- if (x < 0) x = 0;
- _SpinDuration = x;
- }
- }
+ // Spin failed with prejudice -- reduce _SpinDuration.
+ // TODO: Use an AIMD-like policy to adjust _SpinDuration.
+ // AIMD is globally stable.
+ TEVENT(Spin failure);
+ {
+ int x = _SpinDuration;
+ if (x > 0) {
+ // Consider an AIMD scheme like: x -= (x >> 3) + 100
+ // This is globally sample and tends to damp the response.
+ x -= Knob_Penalty;
+ if (x < 0) x = 0;
+ _SpinDuration = x;
+ }
+ }
Abort:
- if (MaxSpin >= 0) Adjust(&_Spinner, -1);
- if (sss && _succ == Self) {
- _succ = NULL;
- // Invariant: after setting succ=null a contending thread
- // must recheck-retry _owner before parking. This usually happens
- // in the normal usage of TrySpin(), but it's safest
- // to make TrySpin() as foolproof as possible.
- OrderAccess::fence();
- if (TryLock(Self) > 0) return 1;
- }
- return 0;
+ if (MaxSpin >= 0) Adjust(&_Spinner, -1);
+ if (sss && _succ == Self) {
+ _succ = NULL;
+ // Invariant: after setting succ=null a contending thread
+ // must recheck-retry _owner before parking. This usually happens
+ // in the normal usage of TrySpin(), but it's safest
+ // to make TrySpin() as foolproof as possible.
+ OrderAccess::fence();
+ if (TryLock(Self) > 0) return 1;
+ }
+ return 0;
}
// NotRunnable() -- informed spinning
@@ -2241,30 +2229,30 @@
// Spinning, in general, is probabilistic anyway.
-int ObjectMonitor::NotRunnable (Thread * Self, Thread * ox) {
- // Check either OwnerIsThread or ox->TypeTag == 2BAD.
- if (!OwnerIsThread) return 0;
+int ObjectMonitor::NotRunnable(Thread * Self, Thread * ox) {
+ // Check either OwnerIsThread or ox->TypeTag == 2BAD.
+ if (!OwnerIsThread) return 0;
- if (ox == NULL) return 0;
+ if (ox == NULL) return 0;
- // Avoid transitive spinning ...
- // Say T1 spins or blocks trying to acquire L. T1._Stalled is set to L.
- // Immediately after T1 acquires L it's possible that T2, also
- // spinning on L, will see L.Owner=T1 and T1._Stalled=L.
- // This occurs transiently after T1 acquired L but before
- // T1 managed to clear T1.Stalled. T2 does not need to abort
- // its spin in this circumstance.
- intptr_t BlockedOn = SafeFetchN((intptr_t *) &ox->_Stalled, intptr_t(1));
+ // Avoid transitive spinning ...
+ // Say T1 spins or blocks trying to acquire L. T1._Stalled is set to L.
+ // Immediately after T1 acquires L it's possible that T2, also
+ // spinning on L, will see L.Owner=T1 and T1._Stalled=L.
+ // This occurs transiently after T1 acquired L but before
+ // T1 managed to clear T1.Stalled. T2 does not need to abort
+ // its spin in this circumstance.
+ intptr_t BlockedOn = SafeFetchN((intptr_t *) &ox->_Stalled, intptr_t(1));
- if (BlockedOn == 1) return 1;
- if (BlockedOn != 0) {
- return BlockedOn != intptr_t(this) && _owner == ox;
- }
+ if (BlockedOn == 1) return 1;
+ if (BlockedOn != 0) {
+ return BlockedOn != intptr_t(this) && _owner == ox;
+ }
- assert(sizeof(((JavaThread *)ox)->_thread_state == sizeof(int)), "invariant");
- int jst = SafeFetch32((int *) &((JavaThread *) ox)->_thread_state, -1);;
- // consider also: jst != _thread_in_Java -- but that's overspecific.
- return jst == _thread_blocked || jst == _thread_in_native;
+ assert(sizeof(((JavaThread *)ox)->_thread_state == sizeof(int)), "invariant");
+ int jst = SafeFetch32((int *) &((JavaThread *) ox)->_thread_state, -1);;
+ // consider also: jst != _thread_in_Java -- but that's overspecific.
+ return jst == _thread_blocked || jst == _thread_in_native;
}
@@ -2377,28 +2365,37 @@
assert(InitializationCompleted == 0, "invariant");
InitializationCompleted = 1;
if (UsePerfData) {
- EXCEPTION_MARK;
- #define NEWPERFCOUNTER(n) {n = PerfDataManager::create_counter(SUN_RT, #n, PerfData::U_Events,CHECK); }
- #define NEWPERFVARIABLE(n) {n = PerfDataManager::create_variable(SUN_RT, #n, PerfData::U_Events,CHECK); }
- NEWPERFCOUNTER(_sync_Inflations);
- NEWPERFCOUNTER(_sync_Deflations);
- NEWPERFCOUNTER(_sync_ContendedLockAttempts);
- NEWPERFCOUNTER(_sync_FutileWakeups);
- NEWPERFCOUNTER(_sync_Parks);
- NEWPERFCOUNTER(_sync_EmptyNotifications);
- NEWPERFCOUNTER(_sync_Notifications);
- NEWPERFCOUNTER(_sync_SlowEnter);
- NEWPERFCOUNTER(_sync_SlowExit);
- NEWPERFCOUNTER(_sync_SlowNotify);
- NEWPERFCOUNTER(_sync_SlowNotifyAll);
- NEWPERFCOUNTER(_sync_FailedSpins);
- NEWPERFCOUNTER(_sync_SuccessfulSpins);
- NEWPERFCOUNTER(_sync_PrivateA);
- NEWPERFCOUNTER(_sync_PrivateB);
- NEWPERFCOUNTER(_sync_MonInCirculation);
- NEWPERFCOUNTER(_sync_MonScavenged);
- NEWPERFVARIABLE(_sync_MonExtant);
- #undef NEWPERFCOUNTER
+ EXCEPTION_MARK;
+#define NEWPERFCOUNTER(n) \
+ { \
+ n = PerfDataManager::create_counter(SUN_RT, #n, PerfData::U_Events, \
+ CHECK); \
+ }
+#define NEWPERFVARIABLE(n) \
+ { \
+ n = PerfDataManager::create_variable(SUN_RT, #n, PerfData::U_Events, \
+ CHECK); \
+ }
+ NEWPERFCOUNTER(_sync_Inflations);
+ NEWPERFCOUNTER(_sync_Deflations);
+ NEWPERFCOUNTER(_sync_ContendedLockAttempts);
+ NEWPERFCOUNTER(_sync_FutileWakeups);
+ NEWPERFCOUNTER(_sync_Parks);
+ NEWPERFCOUNTER(_sync_EmptyNotifications);
+ NEWPERFCOUNTER(_sync_Notifications);
+ NEWPERFCOUNTER(_sync_SlowEnter);
+ NEWPERFCOUNTER(_sync_SlowExit);
+ NEWPERFCOUNTER(_sync_SlowNotify);
+ NEWPERFCOUNTER(_sync_SlowNotifyAll);
+ NEWPERFCOUNTER(_sync_FailedSpins);
+ NEWPERFCOUNTER(_sync_SuccessfulSpins);
+ NEWPERFCOUNTER(_sync_PrivateA);
+ NEWPERFCOUNTER(_sync_PrivateB);
+ NEWPERFCOUNTER(_sync_MonInCirculation);
+ NEWPERFCOUNTER(_sync_MonScavenged);
+ NEWPERFVARIABLE(_sync_MonExtant);
+#undef NEWPERFCOUNTER
+#undef NEWPERFVARIABLE
}
}
@@ -2416,34 +2413,34 @@
}
-static char * kvGet (char * kvList, const char * Key) {
- if (kvList == NULL) return NULL;
- size_t n = strlen(Key);
- char * Search;
- for (Search = kvList; *Search; Search += strlen(Search) + 1) {
- if (strncmp (Search, Key, n) == 0) {
- if (Search[n] == '=') return Search + n + 1;
- if (Search[n] == 0) return(char *) "1";
- }
+static char * kvGet(char * kvList, const char * Key) {
+ if (kvList == NULL) return NULL;
+ size_t n = strlen(Key);
+ char * Search;
+ for (Search = kvList; *Search; Search += strlen(Search) + 1) {
+ if (strncmp (Search, Key, n) == 0) {
+ if (Search[n] == '=') return Search + n + 1;
+ if (Search[n] == 0) return(char *) "1";
}
- return NULL;
+ }
+ return NULL;
}
-static int kvGetInt (char * kvList, const char * Key, int Default) {
- char * v = kvGet(kvList, Key);
- int rslt = v ? ::strtol(v, NULL, 0) : Default;
- if (Knob_ReportSettings && v != NULL) {
- ::printf (" SyncKnob: %s %d(%d)\n", Key, rslt, Default) ;
- ::fflush(stdout);
- }
- return rslt;
+static int kvGetInt(char * kvList, const char * Key, int Default) {
+ char * v = kvGet(kvList, Key);
+ int rslt = v ? ::strtol(v, NULL, 0) : Default;
+ if (Knob_ReportSettings && v != NULL) {
+ ::printf (" SyncKnob: %s %d(%d)\n", Key, rslt, Default) ;
+ ::fflush(stdout);
+ }
+ return rslt;
}
void ObjectMonitor::DeferredInitialize() {
if (InitDone > 0) return;
if (Atomic::cmpxchg (-1, &InitDone, 0) != 0) {
- while (InitDone != 1);
- return;
+ while (InitDone != 1) /* empty */;
+ return;
}
// One-shot global initialization ...
@@ -2457,16 +2454,16 @@
size_t sz = strlen(SyncKnobs);
char * knobs = (char *) malloc(sz + 2);
if (knobs == NULL) {
- vm_exit_out_of_memory(sz + 2, OOM_MALLOC_ERROR, "Parse SyncKnobs");
- guarantee(0, "invariant");
+ vm_exit_out_of_memory(sz + 2, OOM_MALLOC_ERROR, "Parse SyncKnobs");
+ guarantee(0, "invariant");
}
strcpy(knobs, SyncKnobs);
knobs[sz+1] = 0;
for (char * p = knobs; *p; p++) {
- if (*p == ':') *p = 0;
+ if (*p == ':') *p = 0;
}
- #define SETKNOB(x) { Knob_##x = kvGetInt (knobs, #x, Knob_##x); }
+ #define SETKNOB(x) { Knob_##x = kvGetInt(knobs, #x, Knob_##x); }
SETKNOB(ReportSettings);
SETKNOB(Verbose);
SETKNOB(VerifyInUse);
@@ -2502,18 +2499,18 @@
}
if (os::is_MP()) {
- BackOffMask = (1 << Knob_SpinBackOff) - 1;
- if (Knob_ReportSettings) ::printf("BackOffMask=%X\n", BackOffMask);
- // CONSIDER: BackOffMask = ROUNDUP_NEXT_POWER2 (ncpus-1)
+ BackOffMask = (1 << Knob_SpinBackOff) - 1;
+ if (Knob_ReportSettings) ::printf("BackOffMask=%X\n", BackOffMask);
+ // CONSIDER: BackOffMask = ROUNDUP_NEXT_POWER2 (ncpus-1)
} else {
- Knob_SpinLimit = 0;
- Knob_SpinBase = 0;
- Knob_PreSpin = 0;
- Knob_FixedSpin = -1;
+ Knob_SpinLimit = 0;
+ Knob_SpinBase = 0;
+ Knob_PreSpin = 0;
+ Knob_FixedSpin = -1;
}
if (Knob_LogSpins == 0) {
- ObjectMonitor::_sync_FailedSpins = NULL;
+ ObjectMonitor::_sync_FailedSpins = NULL;
}
free(knobs);
--- a/hotspot/src/share/vm/runtime/objectMonitor.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/objectMonitor.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -87,18 +87,18 @@
public:
// TODO-FIXME: the "offset" routines should return a type of off_t instead of int ...
// ByteSize would also be an appropriate type.
- static int header_offset_in_bytes() { return offset_of(ObjectMonitor, _header); }
- static int object_offset_in_bytes() { return offset_of(ObjectMonitor, _object); }
- static int owner_offset_in_bytes() { return offset_of(ObjectMonitor, _owner); }
- static int count_offset_in_bytes() { return offset_of(ObjectMonitor, _count); }
+ static int header_offset_in_bytes() { return offset_of(ObjectMonitor, _header); }
+ static int object_offset_in_bytes() { return offset_of(ObjectMonitor, _object); }
+ static int owner_offset_in_bytes() { return offset_of(ObjectMonitor, _owner); }
+ static int count_offset_in_bytes() { return offset_of(ObjectMonitor, _count); }
static int recursions_offset_in_bytes() { return offset_of(ObjectMonitor, _recursions); }
- static int cxq_offset_in_bytes() { return offset_of(ObjectMonitor, _cxq); }
- static int succ_offset_in_bytes() { return offset_of(ObjectMonitor, _succ); }
- static int EntryList_offset_in_bytes() { return offset_of(ObjectMonitor, _EntryList); }
- static int FreeNext_offset_in_bytes() { return offset_of(ObjectMonitor, FreeNext); }
- static int WaitSet_offset_in_bytes() { return offset_of(ObjectMonitor, _WaitSet); }
+ static int cxq_offset_in_bytes() { return offset_of(ObjectMonitor, _cxq); }
+ static int succ_offset_in_bytes() { return offset_of(ObjectMonitor, _succ); }
+ static int EntryList_offset_in_bytes() { return offset_of(ObjectMonitor, _EntryList); }
+ static int FreeNext_offset_in_bytes() { return offset_of(ObjectMonitor, FreeNext); }
+ static int WaitSet_offset_in_bytes() { return offset_of(ObjectMonitor, _WaitSet); }
static int Responsible_offset_in_bytes() { return offset_of(ObjectMonitor, _Responsible); }
- static int Spinner_offset_in_bytes() { return offset_of(ObjectMonitor, _Spinner); }
+ static int Spinner_offset_in_bytes() { return offset_of(ObjectMonitor, _Spinner); }
public:
// Eventually we'll make provisions for multiple callbacks, but
@@ -140,7 +140,7 @@
ObjectMonitor() {
_header = NULL;
_count = 0;
- _waiters = 0,
+ _waiters = 0;
_recursions = 0;
_object = NULL;
_owner = NULL;
@@ -158,12 +158,12 @@
}
~ObjectMonitor() {
- // TODO: Add asserts ...
- // _cxq == 0 _succ == NULL _owner == NULL _waiters == 0
- // _count == 0 _EntryList == NULL etc
+ // TODO: Add asserts ...
+ // _cxq == 0 _succ == NULL _owner == NULL _waiters == 0
+ // _count == 0 _EntryList == NULL etc
}
-private:
+ private:
void Recycle() {
// TODO: add stronger asserts ...
// _cxq == 0 _succ == NULL _owner == NULL _waiters == 0
@@ -180,7 +180,7 @@
OwnerIsThread = 0;
}
-public:
+ public:
void* object() const;
void* object_addr();
@@ -225,9 +225,9 @@
void ExitEpilog(Thread * Self, ObjectWaiter * Wakee);
bool ExitSuspendEquivalent(JavaThread * Self);
void post_monitor_wait_event(EventJavaMonitorWait * event,
- jlong notifier_tid,
- jlong timeout,
- bool timedout);
+ jlong notifier_tid,
+ jlong timeout,
+ bool timedout);
private:
friend class ObjectSynchronizer;
@@ -240,7 +240,7 @@
volatile markOop _header; // displaced object header word - mark
void* volatile _object; // backward object pointer - strong root
- double SharingPad[1]; // temp to reduce false sharing
+ double SharingPad[1]; // temp to reduce false sharing
// All the following fields must be machine word aligned
// The VM assumes write ordering wrt these fields, which can be
@@ -248,25 +248,25 @@
protected: // protected for jvmtiRawMonitor
void * volatile _owner; // pointer to owning thread OR BasicLock
- volatile jlong _previous_owner_tid; // thread id of the previous owner of the monitor
+ volatile jlong _previous_owner_tid; // thread id of the previous owner of the monitor
volatile intptr_t _recursions; // recursion count, 0 for first entry
private:
- int OwnerIsThread; // _owner is (Thread *) vs SP/BasicLock
- ObjectWaiter * volatile _cxq; // LL of recently-arrived threads blocked on entry.
+ int OwnerIsThread; // _owner is (Thread *) vs SP/BasicLock
+ ObjectWaiter * volatile _cxq; // LL of recently-arrived threads blocked on entry.
// The list is actually composed of WaitNodes, acting
// as proxies for Threads.
protected:
- ObjectWaiter * volatile _EntryList; // Threads blocked on entry or reentry.
+ ObjectWaiter * volatile _EntryList; // Threads blocked on entry or reentry.
private:
Thread * volatile _succ; // Heir presumptive thread - used for futile wakeup throttling
Thread * volatile _Responsible;
- int _PromptDrain; // rqst to drain cxq into EntryList ASAP
+ int _PromptDrain; // rqst to drain cxq into EntryList ASAP
- volatile int _Spinner; // for exit->spinner handoff optimization
- volatile int _SpinFreq; // Spin 1-out-of-N attempts: success rate
+ volatile int _Spinner; // for exit->spinner handoff optimization
+ volatile int _SpinFreq; // Spin 1-out-of-N attempts: success rate
volatile int _SpinClock;
volatile int _SpinDuration;
- volatile intptr_t _SpinState; // MCS/CLH list of spinners
+ volatile intptr_t _SpinState; // MCS/CLH list of spinners
// TODO-FIXME: _count, _waiters and _recursions should be of
// type int, or int32_t but not intptr_t. There's no reason
@@ -284,8 +284,8 @@
volatile int _WaitSetLock; // protects Wait Queue - simple spinlock
public:
- int _QMix; // Mixed prepend queue discipline
- ObjectMonitor * FreeNext; // Free list linkage
+ int _QMix; // Mixed prepend queue discipline
+ ObjectMonitor * FreeNext; // Free list linkage
intptr_t StatA, StatsB;
public:
@@ -328,9 +328,17 @@
};
#undef TEVENT
-#define TEVENT(nom) {if (SyncVerbose) FEVENT(nom); }
+#define TEVENT(nom) { if (SyncVerbose) FEVENT(nom); }
-#define FEVENT(nom) { static volatile int ctr = 0; int v = ++ctr; if ((v & (v-1)) == 0) { ::printf (#nom " : %d \n", v); ::fflush(stdout); }}
+#define FEVENT(nom) \
+ { \
+ static volatile int ctr = 0; \
+ int v = ++ctr; \
+ if ((v & (v - 1)) == 0) { \
+ ::printf(#nom " : %d\n", v); \
+ ::fflush(stdout); \
+ } \
+ }
#undef TEVENT
#define TEVENT(nom) {;}
--- a/hotspot/src/share/vm/runtime/os.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/os.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -1406,24 +1406,15 @@
return (sp > (stack_limit + reserved_area));
}
-size_t os::page_size_for_region(size_t region_min_size, size_t region_max_size,
- uint min_pages)
-{
+size_t os::page_size_for_region(size_t region_size, size_t min_pages) {
assert(min_pages > 0, "sanity");
if (UseLargePages) {
- const size_t max_page_size = region_max_size / min_pages;
+ const size_t max_page_size = region_size / min_pages;
- for (unsigned int i = 0; _page_sizes[i] != 0; ++i) {
- const size_t sz = _page_sizes[i];
- const size_t mask = sz - 1;
- if ((region_min_size & mask) == 0 && (region_max_size & mask) == 0) {
- // The largest page size with no fragmentation.
- return sz;
- }
-
- if (sz <= max_page_size) {
- // The largest page size that satisfies the min_pages requirement.
- return sz;
+ for (size_t i = 0; _page_sizes[i] != 0; ++i) {
+ const size_t page_size = _page_sizes[i];
+ if (page_size <= max_page_size && is_size_aligned(region_size, page_size)) {
+ return page_size;
}
}
}
@@ -1660,3 +1651,63 @@
return result;
}
#endif
+
+/////////////// Unit tests ///////////////
+
+#ifndef PRODUCT
+
+#define assert_eq(a,b) assert(a == b, err_msg(SIZE_FORMAT " != " SIZE_FORMAT, a, b))
+
+class TestOS : AllStatic {
+ static size_t small_page_size() {
+ return os::vm_page_size();
+ }
+
+ static size_t large_page_size() {
+ const size_t large_page_size_example = 4 * M;
+ return os::page_size_for_region(large_page_size_example, 1);
+ }
+
+ static void test_page_size_for_region() {
+ if (UseLargePages) {
+ const size_t small_page = small_page_size();
+ const size_t large_page = large_page_size();
+
+ if (large_page > small_page) {
+ size_t num_small_pages_in_large = large_page / small_page;
+ size_t page = os::page_size_for_region(large_page, num_small_pages_in_large);
+
+ assert_eq(page, small_page);
+ }
+ }
+ }
+
+ static void test_page_size_for_region_alignment() {
+ if (UseLargePages) {
+ const size_t small_page = small_page_size();
+ const size_t large_page = large_page_size();
+ if (large_page > small_page) {
+ const size_t unaligned_region = large_page + 17;
+ size_t page = os::page_size_for_region(unaligned_region, 1);
+ assert_eq(page, small_page);
+
+ const size_t num_pages = 5;
+ const size_t aligned_region = large_page * num_pages;
+ page = os::page_size_for_region(aligned_region, num_pages);
+ assert_eq(page, large_page);
+ }
+ }
+ }
+
+ public:
+ static void run_tests() {
+ test_page_size_for_region();
+ test_page_size_for_region_alignment();
+ }
+};
+
+void TestOS_test() {
+ TestOS::run_tests();
+}
+
+#endif // PRODUCT
--- a/hotspot/src/share/vm/runtime/os.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/os.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -214,13 +214,14 @@
// Interface for detecting multiprocessor system
static inline bool is_MP() {
-#if !INCLUDE_NMT
- assert(_processor_count > 0, "invalid processor count");
- return _processor_count > 1 || AssumeMP;
-#else
- // NMT needs atomic operations before this initialization.
- return true;
-#endif
+ // During bootstrap if _processor_count is not yet initialized
+ // we claim to be MP as that is safest. If any platform has a
+ // stub generator that might be triggered in this phase and for
+ // which being declared MP when in fact not, is a problem - then
+ // the bootstrap routine for the stub generator needs to check
+ // the processor count directly and leave the bootstrap routine
+ // in place until called after initialization has ocurred.
+ return (_processor_count != 1) || AssumeMP;
}
static julong available_memory();
static julong physical_memory();
@@ -265,19 +266,11 @@
// Return the default page size.
static int vm_page_size();
- // Return the page size to use for a region of memory. The min_pages argument
- // is a hint intended to limit fragmentation; it says the returned page size
- // should be <= region_max_size / min_pages. Because min_pages is a hint,
- // this routine may return a size larger than region_max_size / min_pages.
- //
- // The current implementation ignores min_pages if a larger page size is an
- // exact multiple of both region_min_size and region_max_size. This allows
- // larger pages to be used when doing so would not cause fragmentation; in
- // particular, a single page can be used when region_min_size ==
- // region_max_size == a supported page size.
- static size_t page_size_for_region(size_t region_min_size,
- size_t region_max_size,
- uint min_pages);
+ // Returns the page size to use for a region of memory.
+ // region_size / min_pages will always be greater than or equal to the
+ // returned value.
+ static size_t page_size_for_region(size_t region_size, size_t min_pages);
+
// Return the largest page size that can be used
static size_t max_page_size() {
// The _page_sizes array is sorted in descending order.
@@ -481,8 +474,8 @@
// run cmd in a separate process and return its exit code; or -1 on failures
static int fork_and_exec(char *cmd);
- // os::exit() is merged with vm_exit()
- // static void exit(int num);
+ // Call ::exit() on all platforms but Windows
+ static void exit(int num);
// Terminate the VM, but don't exit the process
static void shutdown();
--- a/hotspot/src/share/vm/runtime/sharedRuntime.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/sharedRuntime.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -50,8 +50,8 @@
private:
static methodHandle resolve_sub_helper(JavaThread *thread,
- bool is_virtual,
- bool is_optimized, TRAPS);
+ bool is_virtual,
+ bool is_optimized, TRAPS);
// Shared stub locations
@@ -271,35 +271,33 @@
// used by native wrappers to reenable yellow if overflow happened in native code
static void reguard_yellow_pages();
- /**
- * Fill in the "X cannot be cast to a Y" message for ClassCastException
- *
- * @param thr the current thread
- * @param name the name of the class of the object attempted to be cast
- * @return the dynamically allocated exception message (must be freed
- * by the caller using a resource mark)
- *
- * BCP must refer to the current 'checkcast' opcode for the frame
- * on top of the stack.
- * The caller (or one of it's callers) must use a ResourceMark
- * in order to correctly free the result.
- */
+ // Fill in the "X cannot be cast to a Y" message for ClassCastException
+ //
+ // @param thr the current thread
+ // @param name the name of the class of the object attempted to be cast
+ // @return the dynamically allocated exception message (must be freed
+ // by the caller using a resource mark)
+ //
+ // BCP must refer to the current 'checkcast' opcode for the frame
+ // on top of the stack.
+ // The caller (or one of it's callers) must use a ResourceMark
+ // in order to correctly free the result.
+ //
static char* generate_class_cast_message(JavaThread* thr, const char* name);
- /**
- * Fill in the "X cannot be cast to a Y" message for ClassCastException
- *
- * @param name the name of the class of the object attempted to be cast
- * @param klass the name of the target klass attempt
- * @param gripe the specific kind of problem being reported
- * @return the dynamically allocated exception message (must be freed
- * by the caller using a resource mark)
- *
- * This version does not require access the frame, so it can be called
- * from interpreted code
- * The caller (or one of it's callers) must use a ResourceMark
- * in order to correctly free the result.
- */
+ // Fill in the "X cannot be cast to a Y" message for ClassCastException
+ //
+ // @param name the name of the class of the object attempted to be cast
+ // @param klass the name of the target klass attempt
+ // @param gripe the specific kind of problem being reported
+ // @return the dynamically allocated exception message (must be freed
+ // by the caller using a resource mark)
+ //
+ // This version does not require access the frame, so it can be called
+ // from interpreted code
+ // The caller (or one of it's callers) must use a ResourceMark
+ // in order to correctly free the result.
+ //
static char* generate_class_cast_message(const char* name, const char* klass,
const char* gripe = " cannot be cast to ");
@@ -309,11 +307,11 @@
bool is_virtual,
bool is_optimized, TRAPS);
- private:
+ private:
// deopt blob
static void generate_deopt_blob(void);
- public:
+ public:
static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; }
// Resets a call-site in compiled code so it will get resolved again.
@@ -422,17 +420,17 @@
// pointer to the C heap storage. This pointer is the return value from
// OSR_migration_begin.
- static intptr_t* OSR_migration_begin( JavaThread *thread);
+ static intptr_t* OSR_migration_begin(JavaThread *thread);
// OSR_migration_end is a trivial routine. It is called after the compiled
// method has extracted the jvm state from the C heap that OSR_migration_begin
// created. It's entire job is to simply free this storage.
- static void OSR_migration_end ( intptr_t* buf);
+ static void OSR_migration_end(intptr_t* buf);
// Convert a sig into a calling convention register layout
// and find interesting things about it.
static VMRegPair* find_callee_arguments(Symbol* sig, bool has_receiver, bool has_appendix, int *arg_size);
- static VMReg name_for_receiver();
+ static VMReg name_for_receiver();
// "Top of Stack" slots that may be unused by the calling convention but must
// otherwise be preserved.
@@ -691,7 +689,7 @@
static bool contains(CodeBlob* b);
#ifndef PRODUCT
static void print_statistics();
-#endif /* PRODUCT */
+#endif // PRODUCT
};
--- a/hotspot/src/share/vm/runtime/synchronizer.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/synchronizer.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -43,7 +43,7 @@
#include "utilities/preserveException.hpp"
#if defined(__GNUC__) && !defined(PPC64)
- // Need to inhibit inlining for older versions of GCC to avoid build-time failures
+// Need to inhibit inlining for older versions of GCC to avoid build-time failures
#define NOINLINE __attribute__((noinline))
#else
#define NOINLINE
@@ -57,7 +57,6 @@
// for instance. If you make changes here, make sure to modify the
// interpreter, and both C1 and C2 fast-path inline locking code emission.
//
-//
// -----------------------------------------------------------------------------
#ifdef DTRACE_ENABLED
@@ -77,10 +76,10 @@
#define DTRACE_MONITOR_WAIT_PROBE(monitor, obj, thread, millis) \
{ \
- if (DTraceMonitorProbes) { \
+ if (DTraceMonitorProbes) { \
DTRACE_MONITOR_PROBE_COMMON(obj, thread); \
HOTSPOT_MONITOR_WAIT(jtid, \
- (uintptr_t)(monitor), bytes, len, (millis)); \
+ (uintptr_t)(monitor), bytes, len, (millis)); \
} \
}
@@ -88,10 +87,10 @@
#define DTRACE_MONITOR_PROBE(probe, monitor, obj, thread) \
{ \
- if (DTraceMonitorProbes) { \
+ if (DTraceMonitorProbes) { \
DTRACE_MONITOR_PROBE_COMMON(obj, thread); \
HOTSPOT_MONITOR_PROBE_##probe(jtid, /* probe = waited */ \
- (uintptr_t)(monitor), bytes, len); \
+ (uintptr_t)(monitor), bytes, len); \
} \
}
@@ -116,8 +115,8 @@
ObjectMonitor * volatile ObjectSynchronizer::gOmInUseList = NULL;
int ObjectSynchronizer::gOmInUseCount = 0;
static volatile intptr_t ListLock = 0; // protects global monitor free-list cache
-static volatile int MonitorFreeCount = 0; // # on gFreeList
-static volatile int MonitorPopulation = 0; // # Extant -- in circulation
+static volatile int MonitorFreeCount = 0; // # on gFreeList
+static volatile int MonitorPopulation = 0; // # Extant -- in circulation
#define CHAINMARKER (cast_to_oop<intptr_t>(-1))
// -----------------------------------------------------------------------------
@@ -127,8 +126,9 @@
// if the following function is changed. The implementation is
// extremely sensitive to race condition. Be careful.
-void ObjectSynchronizer::fast_enter(Handle obj, BasicLock* lock, bool attempt_rebias, TRAPS) {
- if (UseBiasedLocking) {
+void ObjectSynchronizer::fast_enter(Handle obj, BasicLock* lock,
+ bool attempt_rebias, TRAPS) {
+ if (UseBiasedLocking) {
if (!SafepointSynchronize::is_at_safepoint()) {
BiasedLocking::Condition cond = BiasedLocking::revoke_and_rebias(obj, attempt_rebias, THREAD);
if (cond == BiasedLocking::BIAS_REVOKED_AND_REBIASED) {
@@ -139,9 +139,9 @@
BiasedLocking::revoke_at_safepoint(obj);
}
assert(!obj->mark()->has_bias_pattern(), "biases should be revoked by now");
- }
+ }
- slow_enter(obj, lock, THREAD);
+ slow_enter(obj, lock, THREAD);
}
void ObjectSynchronizer::fast_exit(oop object, BasicLock* lock, TRAPS) {
@@ -150,19 +150,19 @@
markOop dhw = lock->displaced_header();
markOop mark;
if (dhw == NULL) {
- // Recursive stack-lock.
- // Diagnostics -- Could be: stack-locked, inflating, inflated.
- mark = object->mark();
- assert(!mark->is_neutral(), "invariant");
- if (mark->has_locker() && mark != markOopDesc::INFLATING()) {
- assert(THREAD->is_lock_owned((address)mark->locker()), "invariant");
- }
- if (mark->has_monitor()) {
- ObjectMonitor * m = mark->monitor();
- assert(((oop)(m->object()))->mark() == mark, "invariant");
- assert(m->is_entered(THREAD), "invariant");
- }
- return;
+ // Recursive stack-lock.
+ // Diagnostics -- Could be: stack-locked, inflating, inflated.
+ mark = object->mark();
+ assert(!mark->is_neutral(), "invariant");
+ if (mark->has_locker() && mark != markOopDesc::INFLATING()) {
+ assert(THREAD->is_lock_owned((address)mark->locker()), "invariant");
+ }
+ if (mark->has_monitor()) {
+ ObjectMonitor * m = mark->monitor();
+ assert(((oop)(m->object()))->mark() == mark, "invariant");
+ assert(m->is_entered(THREAD), "invariant");
+ }
+ return;
}
mark = object->mark();
@@ -170,11 +170,11 @@
// If the object is stack-locked by the current thread, try to
// swing the displaced header from the box back to the mark.
if (mark == (markOop) lock) {
- assert(dhw->is_neutral(), "invariant");
- if ((markOop) Atomic::cmpxchg_ptr (dhw, object->mark_addr(), mark) == mark) {
- TEVENT(fast_exit: release stacklock);
- return;
- }
+ assert(dhw->is_neutral(), "invariant");
+ if ((markOop) Atomic::cmpxchg_ptr (dhw, object->mark_addr(), mark) == mark) {
+ TEVENT(fast_exit: release stacklock);
+ return;
+ }
}
ObjectSynchronizer::inflate(THREAD, object)->exit(true, THREAD);
@@ -198,8 +198,8 @@
return;
}
// Fall through to inflate() ...
- } else
- if (mark->has_locker() && THREAD->is_lock_owned((address)mark->locker())) {
+ } else if (mark->has_locker() &&
+ THREAD->is_lock_owned((address)mark->locker())) {
assert(lock != mark->locker(), "must not re-lock the same lock");
assert(lock != (BasicLock*)obj->mark(), "don't relock with same BasicLock");
lock->set_displaced_header(NULL);
@@ -261,7 +261,7 @@
// -----------------------------------------------------------------------------
// JNI locks on java objects
// NOTE: must use heavy weight monitor to handle jni monitor enter
-void ObjectSynchronizer::jni_enter(Handle obj, TRAPS) { // possible entry from jni enter
+void ObjectSynchronizer::jni_enter(Handle obj, TRAPS) {
// the current locking is from JNI instead of Java code
TEVENT(jni_enter);
if (UseBiasedLocking) {
@@ -299,7 +299,7 @@
// If this thread has locked the object, exit the monitor. Note: can't use
// monitor->check(CHECK); must exit even if an exception is pending.
if (monitor->check(THREAD)) {
- monitor->exit(true, THREAD);
+ monitor->exit(true, THREAD);
}
}
@@ -349,7 +349,7 @@
return dtrace_waited_probe(monitor, obj, THREAD);
}
-void ObjectSynchronizer::waitUninterruptibly (Handle obj, jlong millis, TRAPS) {
+void ObjectSynchronizer::waitUninterruptibly(Handle obj, jlong millis, TRAPS) {
if (UseBiasedLocking) {
BiasedLocking::revoke_and_rebias(obj, false, THREAD);
assert(!obj->mark()->has_bias_pattern(), "biases should be revoked by now");
@@ -362,7 +362,7 @@
}
void ObjectSynchronizer::notify(Handle obj, TRAPS) {
- if (UseBiasedLocking) {
+ if (UseBiasedLocking) {
BiasedLocking::revoke_and_rebias(obj, false, THREAD);
assert(!obj->mark()->has_bias_pattern(), "biases should be revoked by now");
}
@@ -410,23 +410,23 @@
// performed by the CPU(s) or platform.
struct SharedGlobals {
- // These are highly shared mostly-read variables.
- // To avoid false-sharing they need to be the sole occupants of a $ line.
- double padPrefix[8];
- volatile int stwRandom;
- volatile int stwCycle;
+ // These are highly shared mostly-read variables.
+ // To avoid false-sharing they need to be the sole occupants of a $ line.
+ double padPrefix[8];
+ volatile int stwRandom;
+ volatile int stwCycle;
- // Hot RW variables -- Sequester to avoid false-sharing
- double padSuffix[16];
- volatile int hcSequence;
- double padFinal[8];
+ // Hot RW variables -- Sequester to avoid false-sharing
+ double padSuffix[16];
+ volatile int hcSequence;
+ double padFinal[8];
};
static SharedGlobals GVars;
static int MonitorScavengeThreshold = 1000000;
static volatile int ForceMonitorScavenge = 0; // Scavenge required and pending
-static markOop ReadStableMark (oop obj) {
+static markOop ReadStableMark(oop obj) {
markOop mark = obj->mark();
if (!mark->is_being_inflated()) {
return mark; // normal fast-path return
@@ -451,45 +451,45 @@
++its;
if (its > 10000 || !os::is_MP()) {
- if (its & 1) {
- os::naked_yield();
- TEVENT(Inflate: INFLATING - yield);
- } else {
- // Note that the following code attenuates the livelock problem but is not
- // a complete remedy. A more complete solution would require that the inflating
- // thread hold the associated inflation lock. The following code simply restricts
- // the number of spinners to at most one. We'll have N-2 threads blocked
- // on the inflationlock, 1 thread holding the inflation lock and using
- // a yield/park strategy, and 1 thread in the midst of inflation.
- // A more refined approach would be to change the encoding of INFLATING
- // to allow encapsulation of a native thread pointer. Threads waiting for
- // inflation to complete would use CAS to push themselves onto a singly linked
- // list rooted at the markword. Once enqueued, they'd loop, checking a per-thread flag
- // and calling park(). When inflation was complete the thread that accomplished inflation
- // would detach the list and set the markword to inflated with a single CAS and
- // then for each thread on the list, set the flag and unpark() the thread.
- // This is conceptually similar to muxAcquire-muxRelease, except that muxRelease
- // wakes at most one thread whereas we need to wake the entire list.
- int ix = (cast_from_oop<intptr_t>(obj) >> 5) & (NINFLATIONLOCKS-1);
- int YieldThenBlock = 0;
- assert(ix >= 0 && ix < NINFLATIONLOCKS, "invariant");
- assert((NINFLATIONLOCKS & (NINFLATIONLOCKS-1)) == 0, "invariant");
- Thread::muxAcquire(InflationLocks + ix, "InflationLock");
- while (obj->mark() == markOopDesc::INFLATING()) {
- // Beware: NakedYield() is advisory and has almost no effect on some platforms
- // so we periodically call Self->_ParkEvent->park(1).
- // We use a mixed spin/yield/block mechanism.
- if ((YieldThenBlock++) >= 16) {
- Thread::current()->_ParkEvent->park(1);
- } else {
- os::naked_yield();
- }
- }
- Thread::muxRelease(InflationLocks + ix);
- TEVENT(Inflate: INFLATING - yield/park);
- }
+ if (its & 1) {
+ os::naked_yield();
+ TEVENT(Inflate: INFLATING - yield);
+ } else {
+ // Note that the following code attenuates the livelock problem but is not
+ // a complete remedy. A more complete solution would require that the inflating
+ // thread hold the associated inflation lock. The following code simply restricts
+ // the number of spinners to at most one. We'll have N-2 threads blocked
+ // on the inflationlock, 1 thread holding the inflation lock and using
+ // a yield/park strategy, and 1 thread in the midst of inflation.
+ // A more refined approach would be to change the encoding of INFLATING
+ // to allow encapsulation of a native thread pointer. Threads waiting for
+ // inflation to complete would use CAS to push themselves onto a singly linked
+ // list rooted at the markword. Once enqueued, they'd loop, checking a per-thread flag
+ // and calling park(). When inflation was complete the thread that accomplished inflation
+ // would detach the list and set the markword to inflated with a single CAS and
+ // then for each thread on the list, set the flag and unpark() the thread.
+ // This is conceptually similar to muxAcquire-muxRelease, except that muxRelease
+ // wakes at most one thread whereas we need to wake the entire list.
+ int ix = (cast_from_oop<intptr_t>(obj) >> 5) & (NINFLATIONLOCKS-1);
+ int YieldThenBlock = 0;
+ assert(ix >= 0 && ix < NINFLATIONLOCKS, "invariant");
+ assert((NINFLATIONLOCKS & (NINFLATIONLOCKS-1)) == 0, "invariant");
+ Thread::muxAcquire(InflationLocks + ix, "InflationLock");
+ while (obj->mark() == markOopDesc::INFLATING()) {
+ // Beware: NakedYield() is advisory and has almost no effect on some platforms
+ // so we periodically call Self->_ParkEvent->park(1).
+ // We use a mixed spin/yield/block mechanism.
+ if ((YieldThenBlock++) >= 16) {
+ Thread::current()->_ParkEvent->park(1);
+ } else {
+ os::naked_yield();
+ }
+ }
+ Thread::muxRelease(InflationLocks + ix);
+ TEVENT(Inflate: INFLATING - yield/park);
+ }
} else {
- SpinPause(); // SMP-polite spinning
+ SpinPause(); // SMP-polite spinning
}
}
}
@@ -510,45 +510,40 @@
// result in hashtable collisions and reduced hashtable efficiency.
// There are simple ways to "diffuse" the middle address bits over the
// generated hashCode values:
-//
static inline intptr_t get_next_hash(Thread * Self, oop obj) {
intptr_t value = 0;
if (hashCode == 0) {
- // This form uses an unguarded global Park-Miller RNG,
- // so it's possible for two threads to race and generate the same RNG.
- // On MP system we'll have lots of RW access to a global, so the
- // mechanism induces lots of coherency traffic.
- value = os::random();
- } else
- if (hashCode == 1) {
- // This variation has the property of being stable (idempotent)
- // between STW operations. This can be useful in some of the 1-0
- // synchronization schemes.
- intptr_t addrBits = cast_from_oop<intptr_t>(obj) >> 3;
- value = addrBits ^ (addrBits >> 5) ^ GVars.stwRandom;
- } else
- if (hashCode == 2) {
- value = 1; // for sensitivity testing
- } else
- if (hashCode == 3) {
- value = ++GVars.hcSequence;
- } else
- if (hashCode == 4) {
- value = cast_from_oop<intptr_t>(obj);
+ // This form uses an unguarded global Park-Miller RNG,
+ // so it's possible for two threads to race and generate the same RNG.
+ // On MP system we'll have lots of RW access to a global, so the
+ // mechanism induces lots of coherency traffic.
+ value = os::random();
+ } else if (hashCode == 1) {
+ // This variation has the property of being stable (idempotent)
+ // between STW operations. This can be useful in some of the 1-0
+ // synchronization schemes.
+ intptr_t addrBits = cast_from_oop<intptr_t>(obj) >> 3;
+ value = addrBits ^ (addrBits >> 5) ^ GVars.stwRandom;
+ } else if (hashCode == 2) {
+ value = 1; // for sensitivity testing
+ } else if (hashCode == 3) {
+ value = ++GVars.hcSequence;
+ } else if (hashCode == 4) {
+ value = cast_from_oop<intptr_t>(obj);
} else {
- // Marsaglia's xor-shift scheme with thread-specific state
- // This is probably the best overall implementation -- we'll
- // likely make this the default in future releases.
- unsigned t = Self->_hashStateX;
- t ^= (t << 11);
- Self->_hashStateX = Self->_hashStateY;
- Self->_hashStateY = Self->_hashStateZ;
- Self->_hashStateZ = Self->_hashStateW;
- unsigned v = Self->_hashStateW;
- v = (v ^ (v >> 19)) ^ (t ^ (t >> 8));
- Self->_hashStateW = v;
- value = v;
+ // Marsaglia's xor-shift scheme with thread-specific state
+ // This is probably the best overall implementation -- we'll
+ // likely make this the default in future releases.
+ unsigned t = Self->_hashStateX;
+ t ^= (t << 11);
+ Self->_hashStateX = Self->_hashStateY;
+ Self->_hashStateY = Self->_hashStateZ;
+ Self->_hashStateZ = Self->_hashStateW;
+ unsigned v = Self->_hashStateW;
+ v = (v ^ (v >> 19)) ^ (t ^ (t >> 8));
+ Self->_hashStateW = v;
+ value = v;
}
value &= markOopDesc::hash_mask;
@@ -557,8 +552,8 @@
TEVENT(hashCode: GENERATE);
return value;
}
-//
-intptr_t ObjectSynchronizer::FastHashCode (Thread * Self, oop obj) {
+
+intptr_t ObjectSynchronizer::FastHashCode(Thread * Self, oop obj) {
if (UseBiasedLocking) {
// NOTE: many places throughout the JVM do not expect a safepoint
// to be taken here, in particular most operations on perm gen
@@ -572,7 +567,7 @@
Handle hobj(Self, obj);
// Relaxing assertion for bug 6320749.
assert(Universe::verify_in_progress() ||
- !SafepointSynchronize::is_at_safepoint(),
+ !SafepointSynchronize::is_at_safepoint(),
"biases should not be seen by VM thread here");
BiasedLocking::revoke_and_rebias(hobj, false, JavaThread::current());
obj = hobj();
@@ -583,16 +578,16 @@
// hashCode() is a heap mutator ...
// Relaxing assertion for bug 6320749.
assert(Universe::verify_in_progress() ||
- !SafepointSynchronize::is_at_safepoint(), "invariant");
+ !SafepointSynchronize::is_at_safepoint(), "invariant");
assert(Universe::verify_in_progress() ||
- Self->is_Java_thread() , "invariant");
+ Self->is_Java_thread() , "invariant");
assert(Universe::verify_in_progress() ||
((JavaThread *)Self)->thread_state() != _thread_blocked, "invariant");
ObjectMonitor* monitor = NULL;
markOop temp, test;
intptr_t hash;
- markOop mark = ReadStableMark (obj);
+ markOop mark = ReadStableMark(obj);
// object should remain ineligible for biased locking
assert(!mark->has_bias_pattern(), "invariant");
@@ -706,7 +701,7 @@
// The caller must beware this method can revoke bias, and
// revocation can result in a safepoint.
assert(!SafepointSynchronize::is_at_safepoint(), "invariant");
- assert(self->thread_state() != _thread_blocked , "invariant");
+ assert(self->thread_state() != _thread_blocked, "invariant");
// Possible mark states: neutral, biased, stack-locked, inflated
@@ -841,7 +836,6 @@
// -- unassigned and on a thread's private omFreeList
// -- assigned to an object. The object is inflated and the mark refers
// to the objectmonitor.
-//
// Constraining monitor pool growth via MonitorBound ...
@@ -859,9 +853,8 @@
// See also: GuaranteedSafepointInterval
//
// The current implementation uses asynchronous VM operations.
-//
-static void InduceScavenge (Thread * Self, const char * Whence) {
+static void InduceScavenge(Thread * Self, const char * Whence) {
// Induce STW safepoint to trim monitors
// Ultimately, this results in a call to deflate_idle_monitors() in the near future.
// More precisely, trigger an asynchronous STW safepoint as the number
@@ -886,144 +879,144 @@
}
}
-void ObjectSynchronizer::verifyInUse (Thread *Self) {
- ObjectMonitor* mid;
- int inusetally = 0;
- for (mid = Self->omInUseList; mid != NULL; mid = mid->FreeNext) {
- inusetally++;
- }
- assert(inusetally == Self->omInUseCount, "inuse count off");
+void ObjectSynchronizer::verifyInUse(Thread *Self) {
+ ObjectMonitor* mid;
+ int inusetally = 0;
+ for (mid = Self->omInUseList; mid != NULL; mid = mid->FreeNext) {
+ inusetally++;
+ }
+ assert(inusetally == Self->omInUseCount, "inuse count off");
- int freetally = 0;
- for (mid = Self->omFreeList; mid != NULL; mid = mid->FreeNext) {
- freetally++;
- }
- assert(freetally == Self->omFreeCount, "free count off");
+ int freetally = 0;
+ for (mid = Self->omFreeList; mid != NULL; mid = mid->FreeNext) {
+ freetally++;
+ }
+ assert(freetally == Self->omFreeCount, "free count off");
}
-ObjectMonitor * NOINLINE ObjectSynchronizer::omAlloc (Thread * Self) {
- // A large MAXPRIVATE value reduces both list lock contention
- // and list coherency traffic, but also tends to increase the
- // number of objectMonitors in circulation as well as the STW
- // scavenge costs. As usual, we lean toward time in space-time
- // tradeoffs.
- const int MAXPRIVATE = 1024;
- for (;;) {
- ObjectMonitor * m;
+ObjectMonitor * NOINLINE ObjectSynchronizer::omAlloc(Thread * Self) {
+ // A large MAXPRIVATE value reduces both list lock contention
+ // and list coherency traffic, but also tends to increase the
+ // number of objectMonitors in circulation as well as the STW
+ // scavenge costs. As usual, we lean toward time in space-time
+ // tradeoffs.
+ const int MAXPRIVATE = 1024;
+ for (;;) {
+ ObjectMonitor * m;
- // 1: try to allocate from the thread's local omFreeList.
- // Threads will attempt to allocate first from their local list, then
- // from the global list, and only after those attempts fail will the thread
- // attempt to instantiate new monitors. Thread-local free lists take
- // heat off the ListLock and improve allocation latency, as well as reducing
- // coherency traffic on the shared global list.
- m = Self->omFreeList;
- if (m != NULL) {
- Self->omFreeList = m->FreeNext;
- Self->omFreeCount--;
- // CONSIDER: set m->FreeNext = BAD -- diagnostic hygiene
- guarantee(m->object() == NULL, "invariant");
- if (MonitorInUseLists) {
- m->FreeNext = Self->omInUseList;
- Self->omInUseList = m;
- Self->omInUseCount++;
- if (ObjectMonitor::Knob_VerifyInUse) {
- verifyInUse(Self);
- }
- } else {
- m->FreeNext = NULL;
- }
- return m;
+ // 1: try to allocate from the thread's local omFreeList.
+ // Threads will attempt to allocate first from their local list, then
+ // from the global list, and only after those attempts fail will the thread
+ // attempt to instantiate new monitors. Thread-local free lists take
+ // heat off the ListLock and improve allocation latency, as well as reducing
+ // coherency traffic on the shared global list.
+ m = Self->omFreeList;
+ if (m != NULL) {
+ Self->omFreeList = m->FreeNext;
+ Self->omFreeCount--;
+ // CONSIDER: set m->FreeNext = BAD -- diagnostic hygiene
+ guarantee(m->object() == NULL, "invariant");
+ if (MonitorInUseLists) {
+ m->FreeNext = Self->omInUseList;
+ Self->omInUseList = m;
+ Self->omInUseCount++;
+ if (ObjectMonitor::Knob_VerifyInUse) {
+ verifyInUse(Self);
}
+ } else {
+ m->FreeNext = NULL;
+ }
+ return m;
+ }
- // 2: try to allocate from the global gFreeList
- // CONSIDER: use muxTry() instead of muxAcquire().
- // If the muxTry() fails then drop immediately into case 3.
- // If we're using thread-local free lists then try
- // to reprovision the caller's free list.
- if (gFreeList != NULL) {
- // Reprovision the thread's omFreeList.
- // Use bulk transfers to reduce the allocation rate and heat
- // on various locks.
- Thread::muxAcquire(&ListLock, "omAlloc");
- for (int i = Self->omFreeProvision; --i >= 0 && gFreeList != NULL;) {
- MonitorFreeCount--;
- ObjectMonitor * take = gFreeList;
- gFreeList = take->FreeNext;
- guarantee(take->object() == NULL, "invariant");
- guarantee(!take->is_busy(), "invariant");
- take->Recycle();
- omRelease(Self, take, false);
- }
- Thread::muxRelease(&ListLock);
- Self->omFreeProvision += 1 + (Self->omFreeProvision/2);
- if (Self->omFreeProvision > MAXPRIVATE) Self->omFreeProvision = MAXPRIVATE;
- TEVENT(omFirst - reprovision);
+ // 2: try to allocate from the global gFreeList
+ // CONSIDER: use muxTry() instead of muxAcquire().
+ // If the muxTry() fails then drop immediately into case 3.
+ // If we're using thread-local free lists then try
+ // to reprovision the caller's free list.
+ if (gFreeList != NULL) {
+ // Reprovision the thread's omFreeList.
+ // Use bulk transfers to reduce the allocation rate and heat
+ // on various locks.
+ Thread::muxAcquire(&ListLock, "omAlloc");
+ for (int i = Self->omFreeProvision; --i >= 0 && gFreeList != NULL;) {
+ MonitorFreeCount--;
+ ObjectMonitor * take = gFreeList;
+ gFreeList = take->FreeNext;
+ guarantee(take->object() == NULL, "invariant");
+ guarantee(!take->is_busy(), "invariant");
+ take->Recycle();
+ omRelease(Self, take, false);
+ }
+ Thread::muxRelease(&ListLock);
+ Self->omFreeProvision += 1 + (Self->omFreeProvision/2);
+ if (Self->omFreeProvision > MAXPRIVATE) Self->omFreeProvision = MAXPRIVATE;
+ TEVENT(omFirst - reprovision);
- const int mx = MonitorBound;
- if (mx > 0 && (MonitorPopulation-MonitorFreeCount) > mx) {
- // We can't safely induce a STW safepoint from omAlloc() as our thread
- // state may not be appropriate for such activities and callers may hold
- // naked oops, so instead we defer the action.
- InduceScavenge(Self, "omAlloc");
- }
- continue;
- }
+ const int mx = MonitorBound;
+ if (mx > 0 && (MonitorPopulation-MonitorFreeCount) > mx) {
+ // We can't safely induce a STW safepoint from omAlloc() as our thread
+ // state may not be appropriate for such activities and callers may hold
+ // naked oops, so instead we defer the action.
+ InduceScavenge(Self, "omAlloc");
+ }
+ continue;
+ }
- // 3: allocate a block of new ObjectMonitors
- // Both the local and global free lists are empty -- resort to malloc().
- // In the current implementation objectMonitors are TSM - immortal.
- assert(_BLOCKSIZE > 1, "invariant");
- ObjectMonitor * temp = new ObjectMonitor[_BLOCKSIZE];
+ // 3: allocate a block of new ObjectMonitors
+ // Both the local and global free lists are empty -- resort to malloc().
+ // In the current implementation objectMonitors are TSM - immortal.
+ assert(_BLOCKSIZE > 1, "invariant");
+ ObjectMonitor * temp = new ObjectMonitor[_BLOCKSIZE];
- // NOTE: (almost) no way to recover if allocation failed.
- // We might be able to induce a STW safepoint and scavenge enough
- // objectMonitors to permit progress.
- if (temp == NULL) {
- vm_exit_out_of_memory(sizeof (ObjectMonitor[_BLOCKSIZE]), OOM_MALLOC_ERROR,
- "Allocate ObjectMonitors");
- }
+ // NOTE: (almost) no way to recover if allocation failed.
+ // We might be able to induce a STW safepoint and scavenge enough
+ // objectMonitors to permit progress.
+ if (temp == NULL) {
+ vm_exit_out_of_memory(sizeof (ObjectMonitor[_BLOCKSIZE]), OOM_MALLOC_ERROR,
+ "Allocate ObjectMonitors");
+ }
- // Format the block.
- // initialize the linked list, each monitor points to its next
- // forming the single linked free list, the very first monitor
- // will points to next block, which forms the block list.
- // The trick of using the 1st element in the block as gBlockList
- // linkage should be reconsidered. A better implementation would
- // look like: class Block { Block * next; int N; ObjectMonitor Body [N] ; }
+ // Format the block.
+ // initialize the linked list, each monitor points to its next
+ // forming the single linked free list, the very first monitor
+ // will points to next block, which forms the block list.
+ // The trick of using the 1st element in the block as gBlockList
+ // linkage should be reconsidered. A better implementation would
+ // look like: class Block { Block * next; int N; ObjectMonitor Body [N] ; }
- for (int i = 1; i < _BLOCKSIZE; i++) {
- temp[i].FreeNext = &temp[i+1];
- }
+ for (int i = 1; i < _BLOCKSIZE; i++) {
+ temp[i].FreeNext = &temp[i+1];
+ }
- // terminate the last monitor as the end of list
- temp[_BLOCKSIZE - 1].FreeNext = NULL;
+ // terminate the last monitor as the end of list
+ temp[_BLOCKSIZE - 1].FreeNext = NULL;
- // Element [0] is reserved for global list linkage
- temp[0].set_object(CHAINMARKER);
+ // Element [0] is reserved for global list linkage
+ temp[0].set_object(CHAINMARKER);
- // Consider carving out this thread's current request from the
- // block in hand. This avoids some lock traffic and redundant
- // list activity.
+ // Consider carving out this thread's current request from the
+ // block in hand. This avoids some lock traffic and redundant
+ // list activity.
- // Acquire the ListLock to manipulate BlockList and FreeList.
- // An Oyama-Taura-Yonezawa scheme might be more efficient.
- Thread::muxAcquire(&ListLock, "omAlloc [2]");
- MonitorPopulation += _BLOCKSIZE-1;
- MonitorFreeCount += _BLOCKSIZE-1;
+ // Acquire the ListLock to manipulate BlockList and FreeList.
+ // An Oyama-Taura-Yonezawa scheme might be more efficient.
+ Thread::muxAcquire(&ListLock, "omAlloc [2]");
+ MonitorPopulation += _BLOCKSIZE-1;
+ MonitorFreeCount += _BLOCKSIZE-1;
- // Add the new block to the list of extant blocks (gBlockList).
- // The very first objectMonitor in a block is reserved and dedicated.
- // It serves as blocklist "next" linkage.
- temp[0].FreeNext = gBlockList;
- gBlockList = temp;
+ // Add the new block to the list of extant blocks (gBlockList).
+ // The very first objectMonitor in a block is reserved and dedicated.
+ // It serves as blocklist "next" linkage.
+ temp[0].FreeNext = gBlockList;
+ gBlockList = temp;
- // Add the new string of objectMonitors to the global free list
- temp[_BLOCKSIZE - 1].FreeNext = gFreeList;
- gFreeList = temp + 1;
- Thread::muxRelease(&ListLock);
- TEVENT(Allocate block of monitors);
- }
+ // Add the new string of objectMonitors to the global free list
+ temp[_BLOCKSIZE - 1].FreeNext = gFreeList;
+ gFreeList = temp + 1;
+ Thread::muxRelease(&ListLock);
+ TEVENT(Allocate block of monitors);
+ }
}
// Place "m" on the caller's private per-thread omFreeList.
@@ -1032,30 +1025,30 @@
// omRelease is to return a monitor to the free list after a CAS
// attempt failed. This doesn't allow unbounded #s of monitors to
// accumulate on a thread's free list.
-//
-void ObjectSynchronizer::omRelease (Thread * Self, ObjectMonitor * m, bool fromPerThreadAlloc) {
- guarantee(m->object() == NULL, "invariant");
+void ObjectSynchronizer::omRelease(Thread * Self, ObjectMonitor * m,
+ bool fromPerThreadAlloc) {
+ guarantee(m->object() == NULL, "invariant");
- // Remove from omInUseList
- if (MonitorInUseLists && fromPerThreadAlloc) {
- ObjectMonitor* curmidinuse = NULL;
- for (ObjectMonitor* mid = Self->omInUseList; mid != NULL;) {
- if (m == mid) {
- // extract from per-thread in-use-list
- if (mid == Self->omInUseList) {
- Self->omInUseList = mid->FreeNext;
- } else if (curmidinuse != NULL) {
- curmidinuse->FreeNext = mid->FreeNext; // maintain the current thread inuselist
- }
- Self->omInUseCount--;
- if (ObjectMonitor::Knob_VerifyInUse) {
- verifyInUse(Self);
- }
- break;
- } else {
- curmidinuse = mid;
- mid = mid->FreeNext;
+ // Remove from omInUseList
+ if (MonitorInUseLists && fromPerThreadAlloc) {
+ ObjectMonitor* curmidinuse = NULL;
+ for (ObjectMonitor* mid = Self->omInUseList; mid != NULL;) {
+ if (m == mid) {
+ // extract from per-thread in-use-list
+ if (mid == Self->omInUseList) {
+ Self->omInUseList = mid->FreeNext;
+ } else if (curmidinuse != NULL) {
+ curmidinuse->FreeNext = mid->FreeNext; // maintain the current thread inuselist
+ }
+ Self->omInUseCount--;
+ if (ObjectMonitor::Knob_VerifyInUse) {
+ verifyInUse(Self);
+ }
+ break;
+ } else {
+ curmidinuse = mid;
+ mid = mid->FreeNext;
}
}
}
@@ -1086,54 +1079,54 @@
// be not inopportune interleavings between omFlush() and the scavenge
// operator.
-void ObjectSynchronizer::omFlush (Thread * Self) {
- ObjectMonitor * List = Self->omFreeList; // Null-terminated SLL
- Self->omFreeList = NULL;
- ObjectMonitor * Tail = NULL;
- int Tally = 0;
- if (List != NULL) {
- ObjectMonitor * s;
- for (s = List; s != NULL; s = s->FreeNext) {
- Tally++;
- Tail = s;
- guarantee(s->object() == NULL, "invariant");
- guarantee(!s->is_busy(), "invariant");
- s->set_owner(NULL); // redundant but good hygiene
- TEVENT(omFlush - Move one);
- }
- guarantee(Tail != NULL && List != NULL, "invariant");
+void ObjectSynchronizer::omFlush(Thread * Self) {
+ ObjectMonitor * List = Self->omFreeList; // Null-terminated SLL
+ Self->omFreeList = NULL;
+ ObjectMonitor * Tail = NULL;
+ int Tally = 0;
+ if (List != NULL) {
+ ObjectMonitor * s;
+ for (s = List; s != NULL; s = s->FreeNext) {
+ Tally++;
+ Tail = s;
+ guarantee(s->object() == NULL, "invariant");
+ guarantee(!s->is_busy(), "invariant");
+ s->set_owner(NULL); // redundant but good hygiene
+ TEVENT(omFlush - Move one);
}
+ guarantee(Tail != NULL && List != NULL, "invariant");
+ }
- ObjectMonitor * InUseList = Self->omInUseList;
- ObjectMonitor * InUseTail = NULL;
- int InUseTally = 0;
- if (InUseList != NULL) {
- Self->omInUseList = NULL;
- ObjectMonitor *curom;
- for (curom = InUseList; curom != NULL; curom = curom->FreeNext) {
- InUseTail = curom;
- InUseTally++;
- }
- assert(Self->omInUseCount == InUseTally, "inuse count off");
- Self->omInUseCount = 0;
- guarantee(InUseTail != NULL && InUseList != NULL, "invariant");
+ ObjectMonitor * InUseList = Self->omInUseList;
+ ObjectMonitor * InUseTail = NULL;
+ int InUseTally = 0;
+ if (InUseList != NULL) {
+ Self->omInUseList = NULL;
+ ObjectMonitor *curom;
+ for (curom = InUseList; curom != NULL; curom = curom->FreeNext) {
+ InUseTail = curom;
+ InUseTally++;
}
+ assert(Self->omInUseCount == InUseTally, "inuse count off");
+ Self->omInUseCount = 0;
+ guarantee(InUseTail != NULL && InUseList != NULL, "invariant");
+ }
- Thread::muxAcquire(&ListLock, "omFlush");
- if (Tail != NULL) {
- Tail->FreeNext = gFreeList;
- gFreeList = List;
- MonitorFreeCount += Tally;
- }
+ Thread::muxAcquire(&ListLock, "omFlush");
+ if (Tail != NULL) {
+ Tail->FreeNext = gFreeList;
+ gFreeList = List;
+ MonitorFreeCount += Tally;
+ }
- if (InUseTail != NULL) {
- InUseTail->FreeNext = gOmInUseList;
- gOmInUseList = InUseList;
- gOmInUseCount += InUseTally;
- }
+ if (InUseTail != NULL) {
+ InUseTail->FreeNext = gOmInUseList;
+ gOmInUseList = InUseList;
+ gOmInUseCount += InUseTally;
+ }
- Thread::muxRelease(&ListLock);
- TEVENT(omFlush);
+ Thread::muxRelease(&ListLock);
+ TEVENT(omFlush);
}
// Fast path code shared by multiple functions
@@ -1152,193 +1145,194 @@
// multiple locks occupy the same $ line. Padding might be appropriate.
-ObjectMonitor * NOINLINE ObjectSynchronizer::inflate (Thread * Self, oop object) {
+ObjectMonitor * NOINLINE ObjectSynchronizer::inflate(Thread * Self,
+ oop object) {
// Inflate mutates the heap ...
// Relaxing assertion for bug 6320749.
assert(Universe::verify_in_progress() ||
- !SafepointSynchronize::is_at_safepoint(), "invariant");
+ !SafepointSynchronize::is_at_safepoint(), "invariant");
for (;;) {
- const markOop mark = object->mark();
- assert(!mark->has_bias_pattern(), "invariant");
+ const markOop mark = object->mark();
+ assert(!mark->has_bias_pattern(), "invariant");
+
+ // The mark can be in one of the following states:
+ // * Inflated - just return
+ // * Stack-locked - coerce it to inflated
+ // * INFLATING - busy wait for conversion to complete
+ // * Neutral - aggressively inflate the object.
+ // * BIASED - Illegal. We should never see this
- // The mark can be in one of the following states:
- // * Inflated - just return
- // * Stack-locked - coerce it to inflated
- // * INFLATING - busy wait for conversion to complete
- // * Neutral - aggressively inflate the object.
- // * BIASED - Illegal. We should never see this
+ // CASE: inflated
+ if (mark->has_monitor()) {
+ ObjectMonitor * inf = mark->monitor();
+ assert(inf->header()->is_neutral(), "invariant");
+ assert(inf->object() == object, "invariant");
+ assert(ObjectSynchronizer::verify_objmon_isinpool(inf), "monitor is invalid");
+ return inf;
+ }
+
+ // CASE: inflation in progress - inflating over a stack-lock.
+ // Some other thread is converting from stack-locked to inflated.
+ // Only that thread can complete inflation -- other threads must wait.
+ // The INFLATING value is transient.
+ // Currently, we spin/yield/park and poll the markword, waiting for inflation to finish.
+ // We could always eliminate polling by parking the thread on some auxiliary list.
+ if (mark == markOopDesc::INFLATING()) {
+ TEVENT(Inflate: spin while INFLATING);
+ ReadStableMark(object);
+ continue;
+ }
- // CASE: inflated
- if (mark->has_monitor()) {
- ObjectMonitor * inf = mark->monitor();
- assert(inf->header()->is_neutral(), "invariant");
- assert(inf->object() == object, "invariant");
- assert(ObjectSynchronizer::verify_objmon_isinpool(inf), "monitor is invalid");
- return inf;
- }
+ // CASE: stack-locked
+ // Could be stack-locked either by this thread or by some other thread.
+ //
+ // Note that we allocate the objectmonitor speculatively, _before_ attempting
+ // to install INFLATING into the mark word. We originally installed INFLATING,
+ // allocated the objectmonitor, and then finally STed the address of the
+ // objectmonitor into the mark. This was correct, but artificially lengthened
+ // the interval in which INFLATED appeared in the mark, thus increasing
+ // the odds of inflation contention.
+ //
+ // We now use per-thread private objectmonitor free lists.
+ // These list are reprovisioned from the global free list outside the
+ // critical INFLATING...ST interval. A thread can transfer
+ // multiple objectmonitors en-mass from the global free list to its local free list.
+ // This reduces coherency traffic and lock contention on the global free list.
+ // Using such local free lists, it doesn't matter if the omAlloc() call appears
+ // before or after the CAS(INFLATING) operation.
+ // See the comments in omAlloc().
- // CASE: inflation in progress - inflating over a stack-lock.
- // Some other thread is converting from stack-locked to inflated.
- // Only that thread can complete inflation -- other threads must wait.
- // The INFLATING value is transient.
- // Currently, we spin/yield/park and poll the markword, waiting for inflation to finish.
- // We could always eliminate polling by parking the thread on some auxiliary list.
- if (mark == markOopDesc::INFLATING()) {
- TEVENT(Inflate: spin while INFLATING);
- ReadStableMark(object);
- continue;
+ if (mark->has_locker()) {
+ ObjectMonitor * m = omAlloc(Self);
+ // Optimistically prepare the objectmonitor - anticipate successful CAS
+ // We do this before the CAS in order to minimize the length of time
+ // in which INFLATING appears in the mark.
+ m->Recycle();
+ m->_Responsible = NULL;
+ m->OwnerIsThread = 0;
+ m->_recursions = 0;
+ m->_SpinDuration = ObjectMonitor::Knob_SpinLimit; // Consider: maintain by type/class
+
+ markOop cmp = (markOop) Atomic::cmpxchg_ptr(markOopDesc::INFLATING(), object->mark_addr(), mark);
+ if (cmp != mark) {
+ omRelease(Self, m, true);
+ continue; // Interference -- just retry
}
- // CASE: stack-locked
- // Could be stack-locked either by this thread or by some other thread.
- //
- // Note that we allocate the objectmonitor speculatively, _before_ attempting
- // to install INFLATING into the mark word. We originally installed INFLATING,
- // allocated the objectmonitor, and then finally STed the address of the
- // objectmonitor into the mark. This was correct, but artificially lengthened
- // the interval in which INFLATED appeared in the mark, thus increasing
- // the odds of inflation contention.
+ // We've successfully installed INFLATING (0) into the mark-word.
+ // This is the only case where 0 will appear in a mark-work.
+ // Only the singular thread that successfully swings the mark-word
+ // to 0 can perform (or more precisely, complete) inflation.
//
- // We now use per-thread private objectmonitor free lists.
- // These list are reprovisioned from the global free list outside the
- // critical INFLATING...ST interval. A thread can transfer
- // multiple objectmonitors en-mass from the global free list to its local free list.
- // This reduces coherency traffic and lock contention on the global free list.
- // Using such local free lists, it doesn't matter if the omAlloc() call appears
- // before or after the CAS(INFLATING) operation.
- // See the comments in omAlloc().
-
- if (mark->has_locker()) {
- ObjectMonitor * m = omAlloc(Self);
- // Optimistically prepare the objectmonitor - anticipate successful CAS
- // We do this before the CAS in order to minimize the length of time
- // in which INFLATING appears in the mark.
- m->Recycle();
- m->_Responsible = NULL;
- m->OwnerIsThread = 0;
- m->_recursions = 0;
- m->_SpinDuration = ObjectMonitor::Knob_SpinLimit; // Consider: maintain by type/class
-
- markOop cmp = (markOop) Atomic::cmpxchg_ptr(markOopDesc::INFLATING(), object->mark_addr(), mark);
- if (cmp != mark) {
- omRelease(Self, m, true);
- continue; // Interference -- just retry
- }
-
- // We've successfully installed INFLATING (0) into the mark-word.
- // This is the only case where 0 will appear in a mark-work.
- // Only the singular thread that successfully swings the mark-word
- // to 0 can perform (or more precisely, complete) inflation.
- //
- // Why do we CAS a 0 into the mark-word instead of just CASing the
- // mark-word from the stack-locked value directly to the new inflated state?
- // Consider what happens when a thread unlocks a stack-locked object.
- // It attempts to use CAS to swing the displaced header value from the
- // on-stack basiclock back into the object header. Recall also that the
- // header value (hashcode, etc) can reside in (a) the object header, or
- // (b) a displaced header associated with the stack-lock, or (c) a displaced
- // header in an objectMonitor. The inflate() routine must copy the header
- // value from the basiclock on the owner's stack to the objectMonitor, all
- // the while preserving the hashCode stability invariants. If the owner
- // decides to release the lock while the value is 0, the unlock will fail
- // and control will eventually pass from slow_exit() to inflate. The owner
- // will then spin, waiting for the 0 value to disappear. Put another way,
- // the 0 causes the owner to stall if the owner happens to try to
- // drop the lock (restoring the header from the basiclock to the object)
- // while inflation is in-progress. This protocol avoids races that might
- // would otherwise permit hashCode values to change or "flicker" for an object.
- // Critically, while object->mark is 0 mark->displaced_mark_helper() is stable.
- // 0 serves as a "BUSY" inflate-in-progress indicator.
+ // Why do we CAS a 0 into the mark-word instead of just CASing the
+ // mark-word from the stack-locked value directly to the new inflated state?
+ // Consider what happens when a thread unlocks a stack-locked object.
+ // It attempts to use CAS to swing the displaced header value from the
+ // on-stack basiclock back into the object header. Recall also that the
+ // header value (hashcode, etc) can reside in (a) the object header, or
+ // (b) a displaced header associated with the stack-lock, or (c) a displaced
+ // header in an objectMonitor. The inflate() routine must copy the header
+ // value from the basiclock on the owner's stack to the objectMonitor, all
+ // the while preserving the hashCode stability invariants. If the owner
+ // decides to release the lock while the value is 0, the unlock will fail
+ // and control will eventually pass from slow_exit() to inflate. The owner
+ // will then spin, waiting for the 0 value to disappear. Put another way,
+ // the 0 causes the owner to stall if the owner happens to try to
+ // drop the lock (restoring the header from the basiclock to the object)
+ // while inflation is in-progress. This protocol avoids races that might
+ // would otherwise permit hashCode values to change or "flicker" for an object.
+ // Critically, while object->mark is 0 mark->displaced_mark_helper() is stable.
+ // 0 serves as a "BUSY" inflate-in-progress indicator.
- // fetch the displaced mark from the owner's stack.
- // The owner can't die or unwind past the lock while our INFLATING
- // object is in the mark. Furthermore the owner can't complete
- // an unlock on the object, either.
- markOop dmw = mark->displaced_mark_helper();
- assert(dmw->is_neutral(), "invariant");
-
- // Setup monitor fields to proper values -- prepare the monitor
- m->set_header(dmw);
-
- // Optimization: if the mark->locker stack address is associated
- // with this thread we could simply set m->_owner = Self and
- // m->OwnerIsThread = 1. Note that a thread can inflate an object
- // that it has stack-locked -- as might happen in wait() -- directly
- // with CAS. That is, we can avoid the xchg-NULL .... ST idiom.
- m->set_owner(mark->locker());
- m->set_object(object);
- // TODO-FIXME: assert BasicLock->dhw != 0.
+ // fetch the displaced mark from the owner's stack.
+ // The owner can't die or unwind past the lock while our INFLATING
+ // object is in the mark. Furthermore the owner can't complete
+ // an unlock on the object, either.
+ markOop dmw = mark->displaced_mark_helper();
+ assert(dmw->is_neutral(), "invariant");
- // Must preserve store ordering. The monitor state must
- // be stable at the time of publishing the monitor address.
- guarantee(object->mark() == markOopDesc::INFLATING(), "invariant");
- object->release_set_mark(markOopDesc::encode(m));
-
- // Hopefully the performance counters are allocated on distinct cache lines
- // to avoid false sharing on MP systems ...
- if (ObjectMonitor::_sync_Inflations != NULL) ObjectMonitor::_sync_Inflations->inc();
- TEVENT(Inflate: overwrite stacklock);
- if (TraceMonitorInflation) {
- if (object->is_instance()) {
- ResourceMark rm;
- tty->print_cr("Inflating object " INTPTR_FORMAT " , mark " INTPTR_FORMAT " , type %s",
- (void *) object, (intptr_t) object->mark(),
- object->klass()->external_name());
- }
- }
- return m;
- }
+ // Setup monitor fields to proper values -- prepare the monitor
+ m->set_header(dmw);
- // CASE: neutral
- // TODO-FIXME: for entry we currently inflate and then try to CAS _owner.
- // If we know we're inflating for entry it's better to inflate by swinging a
- // pre-locked objectMonitor pointer into the object header. A successful
- // CAS inflates the object *and* confers ownership to the inflating thread.
- // In the current implementation we use a 2-step mechanism where we CAS()
- // to inflate and then CAS() again to try to swing _owner from NULL to Self.
- // An inflateTry() method that we could call from fast_enter() and slow_enter()
- // would be useful.
-
- assert(mark->is_neutral(), "invariant");
- ObjectMonitor * m = omAlloc(Self);
- // prepare m for installation - set monitor to initial state
- m->Recycle();
- m->set_header(mark);
- m->set_owner(NULL);
+ // Optimization: if the mark->locker stack address is associated
+ // with this thread we could simply set m->_owner = Self and
+ // m->OwnerIsThread = 1. Note that a thread can inflate an object
+ // that it has stack-locked -- as might happen in wait() -- directly
+ // with CAS. That is, we can avoid the xchg-NULL .... ST idiom.
+ m->set_owner(mark->locker());
m->set_object(object);
- m->OwnerIsThread = 1;
- m->_recursions = 0;
- m->_Responsible = NULL;
- m->_SpinDuration = ObjectMonitor::Knob_SpinLimit; // consider: keep metastats by type/class
+ // TODO-FIXME: assert BasicLock->dhw != 0.
- if (Atomic::cmpxchg_ptr (markOopDesc::encode(m), object->mark_addr(), mark) != mark) {
- m->set_object(NULL);
- m->set_owner(NULL);
- m->OwnerIsThread = 0;
- m->Recycle();
- omRelease(Self, m, true);
- m = NULL;
- continue;
- // interference - the markword changed - just retry.
- // The state-transitions are one-way, so there's no chance of
- // live-lock -- "Inflated" is an absorbing state.
- }
+ // Must preserve store ordering. The monitor state must
+ // be stable at the time of publishing the monitor address.
+ guarantee(object->mark() == markOopDesc::INFLATING(), "invariant");
+ object->release_set_mark(markOopDesc::encode(m));
- // Hopefully the performance counters are allocated on distinct
- // cache lines to avoid false sharing on MP systems ...
+ // Hopefully the performance counters are allocated on distinct cache lines
+ // to avoid false sharing on MP systems ...
if (ObjectMonitor::_sync_Inflations != NULL) ObjectMonitor::_sync_Inflations->inc();
- TEVENT(Inflate: overwrite neutral);
+ TEVENT(Inflate: overwrite stacklock);
if (TraceMonitorInflation) {
if (object->is_instance()) {
ResourceMark rm;
tty->print_cr("Inflating object " INTPTR_FORMAT " , mark " INTPTR_FORMAT " , type %s",
- (void *) object, (intptr_t) object->mark(),
- object->klass()->external_name());
+ (void *) object, (intptr_t) object->mark(),
+ object->klass()->external_name());
}
}
return m;
+ }
+
+ // CASE: neutral
+ // TODO-FIXME: for entry we currently inflate and then try to CAS _owner.
+ // If we know we're inflating for entry it's better to inflate by swinging a
+ // pre-locked objectMonitor pointer into the object header. A successful
+ // CAS inflates the object *and* confers ownership to the inflating thread.
+ // In the current implementation we use a 2-step mechanism where we CAS()
+ // to inflate and then CAS() again to try to swing _owner from NULL to Self.
+ // An inflateTry() method that we could call from fast_enter() and slow_enter()
+ // would be useful.
+
+ assert(mark->is_neutral(), "invariant");
+ ObjectMonitor * m = omAlloc(Self);
+ // prepare m for installation - set monitor to initial state
+ m->Recycle();
+ m->set_header(mark);
+ m->set_owner(NULL);
+ m->set_object(object);
+ m->OwnerIsThread = 1;
+ m->_recursions = 0;
+ m->_Responsible = NULL;
+ m->_SpinDuration = ObjectMonitor::Knob_SpinLimit; // consider: keep metastats by type/class
+
+ if (Atomic::cmpxchg_ptr (markOopDesc::encode(m), object->mark_addr(), mark) != mark) {
+ m->set_object(NULL);
+ m->set_owner(NULL);
+ m->OwnerIsThread = 0;
+ m->Recycle();
+ omRelease(Self, m, true);
+ m = NULL;
+ continue;
+ // interference - the markword changed - just retry.
+ // The state-transitions are one-way, so there's no chance of
+ // live-lock -- "Inflated" is an absorbing state.
+ }
+
+ // Hopefully the performance counters are allocated on distinct
+ // cache lines to avoid false sharing on MP systems ...
+ if (ObjectMonitor::_sync_Inflations != NULL) ObjectMonitor::_sync_Inflations->inc();
+ TEVENT(Inflate: overwrite neutral);
+ if (TraceMonitorInflation) {
+ if (object->is_instance()) {
+ ResourceMark rm;
+ tty->print_cr("Inflating object " INTPTR_FORMAT " , mark " INTPTR_FORMAT " , type %s",
+ (void *) object, (intptr_t) object->mark(),
+ object->klass()->external_name());
+ }
+ }
+ return m;
}
}
@@ -1373,17 +1367,17 @@
// typically drives the scavenge rate. Large heaps can mean infrequent GC,
// which in turn can mean large(r) numbers of objectmonitors in circulation.
// This is an unfortunate aspect of this design.
-//
enum ManifestConstants {
- ClearResponsibleAtSTW = 0,
- MaximumRecheckInterval = 1000
+ ClearResponsibleAtSTW = 0,
+ MaximumRecheckInterval = 1000
};
// Deflate a single monitor if not in use
// Return true if deflated, false if in use
bool ObjectSynchronizer::deflate_monitor(ObjectMonitor* mid, oop obj,
- ObjectMonitor** freeHeadp, ObjectMonitor** freeTailp) {
+ ObjectMonitor** freeHeadp,
+ ObjectMonitor** freeTailp) {
bool deflated;
// Normal case ... The monitor is associated with obj.
guarantee(obj->mark() == markOopDesc::encode(mid), "invariant");
@@ -1391,68 +1385,69 @@
guarantee(mid->header()->is_neutral(), "invariant");
if (mid->is_busy()) {
- if (ClearResponsibleAtSTW) mid->_Responsible = NULL;
- deflated = false;
+ if (ClearResponsibleAtSTW) mid->_Responsible = NULL;
+ deflated = false;
} else {
- // Deflate the monitor if it is no longer being used
- // It's idle - scavenge and return to the global free list
- // plain old deflation ...
- TEVENT(deflate_idle_monitors - scavenge1);
- if (TraceMonitorInflation) {
- if (obj->is_instance()) {
- ResourceMark rm;
- tty->print_cr("Deflating object " INTPTR_FORMAT " , mark " INTPTR_FORMAT " , type %s",
- (void *) obj, (intptr_t) obj->mark(), obj->klass()->external_name());
- }
- }
+ // Deflate the monitor if it is no longer being used
+ // It's idle - scavenge and return to the global free list
+ // plain old deflation ...
+ TEVENT(deflate_idle_monitors - scavenge1);
+ if (TraceMonitorInflation) {
+ if (obj->is_instance()) {
+ ResourceMark rm;
+ tty->print_cr("Deflating object " INTPTR_FORMAT " , mark " INTPTR_FORMAT " , type %s",
+ (void *) obj, (intptr_t) obj->mark(), obj->klass()->external_name());
+ }
+ }
- // Restore the header back to obj
- obj->release_set_mark(mid->header());
- mid->clear();
+ // Restore the header back to obj
+ obj->release_set_mark(mid->header());
+ mid->clear();
- assert(mid->object() == NULL, "invariant");
+ assert(mid->object() == NULL, "invariant");
- // Move the object to the working free list defined by FreeHead,FreeTail.
- if (*freeHeadp == NULL) *freeHeadp = mid;
- if (*freeTailp != NULL) {
- ObjectMonitor * prevtail = *freeTailp;
- assert(prevtail->FreeNext == NULL, "cleaned up deflated?"); // TODO KK
- prevtail->FreeNext = mid;
- }
- *freeTailp = mid;
- deflated = true;
+ // Move the object to the working free list defined by FreeHead,FreeTail.
+ if (*freeHeadp == NULL) *freeHeadp = mid;
+ if (*freeTailp != NULL) {
+ ObjectMonitor * prevtail = *freeTailp;
+ assert(prevtail->FreeNext == NULL, "cleaned up deflated?"); // TODO KK
+ prevtail->FreeNext = mid;
+ }
+ *freeTailp = mid;
+ deflated = true;
}
return deflated;
}
// Caller acquires ListLock
int ObjectSynchronizer::walk_monitor_list(ObjectMonitor** listheadp,
- ObjectMonitor** freeHeadp, ObjectMonitor** freeTailp) {
+ ObjectMonitor** freeHeadp,
+ ObjectMonitor** freeTailp) {
ObjectMonitor* mid;
ObjectMonitor* next;
ObjectMonitor* curmidinuse = NULL;
int deflatedcount = 0;
for (mid = *listheadp; mid != NULL;) {
- oop obj = (oop) mid->object();
- bool deflated = false;
- if (obj != NULL) {
- deflated = deflate_monitor(mid, obj, freeHeadp, freeTailp);
- }
- if (deflated) {
- // extract from per-thread in-use-list
- if (mid == *listheadp) {
- *listheadp = mid->FreeNext;
- } else if (curmidinuse != NULL) {
- curmidinuse->FreeNext = mid->FreeNext; // maintain the current thread inuselist
- }
- next = mid->FreeNext;
- mid->FreeNext = NULL; // This mid is current tail in the FreeHead list
- mid = next;
- deflatedcount++;
- } else {
- curmidinuse = mid;
- mid = mid->FreeNext;
+ oop obj = (oop) mid->object();
+ bool deflated = false;
+ if (obj != NULL) {
+ deflated = deflate_monitor(mid, obj, freeHeadp, freeTailp);
+ }
+ if (deflated) {
+ // extract from per-thread in-use-list
+ if (mid == *listheadp) {
+ *listheadp = mid->FreeNext;
+ } else if (curmidinuse != NULL) {
+ curmidinuse->FreeNext = mid->FreeNext; // maintain the current thread inuselist
+ }
+ next = mid->FreeNext;
+ mid->FreeNext = NULL; // This mid is current tail in the FreeHead list
+ mid = next;
+ deflatedcount++;
+ } else {
+ curmidinuse = mid;
+ mid = mid->FreeNext;
}
}
return deflatedcount;
@@ -1485,19 +1480,19 @@
}
nScavenged += deflatedcount;
nInuse += cur->omInUseCount;
- }
+ }
- // For moribund threads, scan gOmInUseList
- if (gOmInUseList) {
- nInCirculation += gOmInUseCount;
- int deflatedcount = walk_monitor_list((ObjectMonitor **)&gOmInUseList, &FreeHead, &FreeTail);
- gOmInUseCount-= deflatedcount;
- nScavenged += deflatedcount;
- nInuse += gOmInUseCount;
+ // For moribund threads, scan gOmInUseList
+ if (gOmInUseList) {
+ nInCirculation += gOmInUseCount;
+ int deflatedcount = walk_monitor_list((ObjectMonitor **)&gOmInUseList, &FreeHead, &FreeTail);
+ gOmInUseCount-= deflatedcount;
+ nScavenged += deflatedcount;
+ nInuse += gOmInUseCount;
}
} else for (ObjectMonitor* block = gBlockList; block != NULL; block = next(block)) {
- // Iterate over all extant monitors - Scavenge all idle monitors.
+ // Iterate over all extant monitors - Scavenge all idle monitors.
assert(block->object() == CHAINMARKER, "must be a block header");
nInCirculation += _BLOCKSIZE;
for (int i = 1; i < _BLOCKSIZE; i++) {
@@ -1529,8 +1524,8 @@
if (ObjectMonitor::Knob_Verbose) {
::printf("Deflate: InCirc=%d InUse=%d Scavenged=%d ForceMonitorScavenge=%d : pop=%d free=%d\n",
- nInCirculation, nInuse, nScavenged, ForceMonitorScavenge,
- MonitorPopulation, MonitorFreeCount);
+ nInCirculation, nInuse, nScavenged, ForceMonitorScavenge,
+ MonitorPopulation, MonitorFreeCount);
::fflush(stdout);
}
@@ -1538,11 +1533,11 @@
// Move the scavenged monitors back to the global free list.
if (FreeHead != NULL) {
- guarantee(FreeTail != NULL && nScavenged > 0, "invariant");
- assert(FreeTail->FreeNext == NULL, "invariant");
- // constant-time list splice - prepend scavenged segment to gFreeList
- FreeTail->FreeNext = gFreeList;
- gFreeList = FreeHead;
+ guarantee(FreeTail != NULL && nScavenged > 0, "invariant");
+ assert(FreeTail->FreeNext == NULL, "invariant");
+ // constant-time list splice - prepend scavenged segment to gFreeList
+ FreeTail->FreeNext = gFreeList;
+ gFreeList = FreeHead;
}
Thread::muxRelease(&ListLock);
@@ -1561,10 +1556,10 @@
// Gives up on a particular monitor if an exception occurs, but continues
// the overall iteration, swallowing the exception.
class ReleaseJavaMonitorsClosure: public MonitorClosure {
-private:
+ private:
TRAPS;
-public:
+ public:
ReleaseJavaMonitorsClosure(Thread* thread) : THREAD(thread) {}
void do_monitor(ObjectMonitor* mid) {
if (mid->owner() == THREAD) {
--- a/hotspot/src/share/vm/runtime/synchronizer.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/synchronizer.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -52,25 +52,26 @@
// assembly copies of these routines. Please keep them synchronized.
//
// attempt_rebias flag is used by UseBiasedLocking implementation
- static void fast_enter (Handle obj, BasicLock* lock, bool attempt_rebias, TRAPS);
- static void fast_exit (oop obj, BasicLock* lock, Thread* THREAD);
+ static void fast_enter(Handle obj, BasicLock* lock, bool attempt_rebias,
+ TRAPS);
+ static void fast_exit(oop obj, BasicLock* lock, Thread* THREAD);
// WARNING: They are ONLY used to handle the slow cases. They should
// only be used when the fast cases failed. Use of these functions
// without previous fast case check may cause fatal error.
- static void slow_enter (Handle obj, BasicLock* lock, TRAPS);
- static void slow_exit (oop obj, BasicLock* lock, Thread* THREAD);
+ static void slow_enter(Handle obj, BasicLock* lock, TRAPS);
+ static void slow_exit(oop obj, BasicLock* lock, Thread* THREAD);
// Used only to handle jni locks or other unmatched monitor enter/exit
// Internally they will use heavy weight monitor.
- static void jni_enter (Handle obj, TRAPS);
+ static void jni_enter(Handle obj, TRAPS);
static bool jni_try_enter(Handle obj, Thread* THREAD); // Implements Unsafe.tryMonitorEnter
- static void jni_exit (oop obj, Thread* THREAD);
+ static void jni_exit(oop obj, Thread* THREAD);
// Handle all interpreter, compiler and jni cases
- static int wait (Handle obj, jlong millis, TRAPS);
- static void notify (Handle obj, TRAPS);
- static void notifyall (Handle obj, TRAPS);
+ static int wait(Handle obj, jlong millis, TRAPS);
+ static void notify(Handle obj, TRAPS);
+ static void notifyall(Handle obj, TRAPS);
// Special internal-use-only method for use by JVM infrastructure
// that needs to wait() on a java-level object but that can't risk
@@ -80,13 +81,14 @@
// used by classloading to free classloader object lock,
// wait on an internal lock, and reclaim original lock
// with original recursion count
- static intptr_t complete_exit (Handle obj, TRAPS);
- static void reenter (Handle obj, intptr_t recursion, TRAPS);
+ static intptr_t complete_exit(Handle obj, TRAPS);
+ static void reenter (Handle obj, intptr_t recursion, TRAPS);
// thread-specific and global objectMonitor free list accessors
static void verifyInUse(Thread * Self);
static ObjectMonitor * omAlloc(Thread * Self);
- static void omRelease(Thread * Self, ObjectMonitor * m, bool FromPerThreadAlloc);
+ static void omRelease(Thread * Self, ObjectMonitor * m,
+ bool FromPerThreadAlloc);
static void omFlush(Thread * Self);
// Inflate light weight monitor to heavy weight monitor
@@ -116,7 +118,8 @@
static int walk_monitor_list(ObjectMonitor** listheadp,
ObjectMonitor** freeHeadp,
ObjectMonitor** freeTailp);
- static bool deflate_monitor(ObjectMonitor* mid, oop obj, ObjectMonitor** freeHeadp,
+ static bool deflate_monitor(ObjectMonitor* mid, oop obj,
+ ObjectMonitor** freeHeadp,
ObjectMonitor** freeTailp);
static void oops_do(OopClosure* f);
@@ -159,13 +162,13 @@
~ObjectLocker();
// Monitor behavior
- void wait (TRAPS) { ObjectSynchronizer::wait (_obj, 0, CHECK); } // wait forever
- void notify_all(TRAPS) { ObjectSynchronizer::notifyall(_obj, CHECK); }
- void waitUninterruptibly (TRAPS) { ObjectSynchronizer::waitUninterruptibly (_obj, 0, CHECK); }
+ void wait(TRAPS) { ObjectSynchronizer::wait(_obj, 0, CHECK); } // wait forever
+ void notify_all(TRAPS) { ObjectSynchronizer::notifyall(_obj, CHECK); }
+ void waitUninterruptibly(TRAPS) { ObjectSynchronizer::waitUninterruptibly(_obj, 0, CHECK); }
// complete_exit gives up lock completely, returning recursion count
// reenter reclaims lock with original recursion count
- intptr_t complete_exit(TRAPS) { return ObjectSynchronizer::complete_exit(_obj, CHECK_0); }
- void reenter(intptr_t recursion, TRAPS) { ObjectSynchronizer::reenter(_obj, recursion, CHECK); }
+ intptr_t complete_exit(TRAPS) { return ObjectSynchronizer::complete_exit(_obj, CHECK_0); }
+ void reenter(intptr_t recursion, TRAPS) { ObjectSynchronizer::reenter(_obj, recursion, CHECK); }
};
#endif // SHARE_VM_RUNTIME_SYNCHRONIZER_HPP
--- a/hotspot/src/share/vm/runtime/thread.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/thread.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -109,25 +109,25 @@
// Only bother with this argument setup if dtrace is available
-#define HOTSPOT_THREAD_PROBE_start HOTSPOT_THREAD_START
-#define HOTSPOT_THREAD_PROBE_stop HOTSPOT_THREAD_STOP
-
-#define DTRACE_THREAD_PROBE(probe, javathread) \
- { \
- ResourceMark rm(this); \
- int len = 0; \
- const char* name = (javathread)->get_thread_name(); \
- len = strlen(name); \
- HOTSPOT_THREAD_PROBE_##probe( /* probe = start, stop */ \
- (char *) name, len, \
- java_lang_Thread::thread_id((javathread)->threadObj()), \
- (uintptr_t) (javathread)->osthread()->thread_id(), \
- java_lang_Thread::is_daemon((javathread)->threadObj())); \
- }
+ #define HOTSPOT_THREAD_PROBE_start HOTSPOT_THREAD_START
+ #define HOTSPOT_THREAD_PROBE_stop HOTSPOT_THREAD_STOP
+
+ #define DTRACE_THREAD_PROBE(probe, javathread) \
+ { \
+ ResourceMark rm(this); \
+ int len = 0; \
+ const char* name = (javathread)->get_thread_name(); \
+ len = strlen(name); \
+ HOTSPOT_THREAD_PROBE_##probe(/* probe = start, stop */ \
+ (char *) name, len, \
+ java_lang_Thread::thread_id((javathread)->threadObj()), \
+ (uintptr_t) (javathread)->osthread()->thread_id(), \
+ java_lang_Thread::is_daemon((javathread)->threadObj())); \
+ }
#else // ndef DTRACE_ENABLED
-#define DTRACE_THREAD_PROBE(probe, javathread)
+ #define DTRACE_THREAD_PROBE(probe, javathread)
#endif // ndef DTRACE_ENABLED
@@ -148,15 +148,16 @@
size_t aligned_size = size + (alignment - sizeof(intptr_t));
void* real_malloc_addr = throw_excpt? AllocateHeap(aligned_size, flags, CURRENT_PC)
: AllocateHeap(aligned_size, flags, CURRENT_PC,
- AllocFailStrategy::RETURN_NULL);
+ AllocFailStrategy::RETURN_NULL);
void* aligned_addr = (void*) align_size_up((intptr_t) real_malloc_addr, alignment);
assert(((uintptr_t) aligned_addr + (uintptr_t) size) <=
((uintptr_t) real_malloc_addr + (uintptr_t) aligned_size),
"JavaThread alignment code overflowed allocated storage");
if (TraceBiasedLocking) {
- if (aligned_addr != real_malloc_addr)
+ if (aligned_addr != real_malloc_addr) {
tty->print_cr("Aligned thread " INTPTR_FORMAT " to " INTPTR_FORMAT,
real_malloc_addr, aligned_addr);
+ }
}
((Thread*) aligned_addr)->_real_malloc_address = real_malloc_addr;
return aligned_addr;
@@ -264,7 +265,7 @@
this == (void*) align_size_up((intptr_t) _real_malloc_address, markOopDesc::biased_lock_alignment),
"bug in forced alignment of thread objects");
}
-#endif /* ASSERT */
+#endif // ASSERT
}
void Thread::initialize_thread_local_storage() {
@@ -365,7 +366,7 @@
#ifdef ASSERT
// Private method to check for dangling thread pointer
void check_for_dangling_thread_pointer(Thread *thread) {
- assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(),
+ assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(),
"possibility of dangling Thread pointer");
}
#endif
@@ -445,7 +446,6 @@
}
-//
// Check if an external suspend request has completed (or has been
// cancelled). Returns true if the thread is externally suspended and
// false otherwise.
@@ -470,7 +470,6 @@
// 0x00080000 - suspend request cancelled in loop (return false)
// 0x00100000 - thread suspended in loop (return true)
// 0x00200000 - suspend not completed during retry loop (return false)
-//
// Helper class for tracing suspend wait debug bits.
//
@@ -517,8 +516,8 @@
ResourceMark rm;
tty->print_cr(
- "Failed wait_for_ext_suspend_completion(thread=%s, debug_bits=%x)",
- jt->get_thread_name(), *bits);
+ "Failed wait_for_ext_suspend_completion(thread=%s, debug_bits=%x)",
+ jt->get_thread_name(), *bits);
guarantee(!AssertOnSuspendWaitFailure, "external suspend wait failed");
}
@@ -528,7 +527,8 @@
#undef DEBUG_FALSE_BITS
-bool JavaThread::is_ext_suspend_completed(bool called_by_wait, int delay, uint32_t *bits) {
+bool JavaThread::is_ext_suspend_completed(bool called_by_wait, int delay,
+ uint32_t *bits) {
TraceSuspendDebugBits tsdb(this, false /* !is_wait */, called_by_wait, bits);
bool did_trans_retry = false; // only do thread_in_native_trans retry once
@@ -649,12 +649,11 @@
return false;
}
-//
// Wait for an external suspend request to complete (or be cancelled).
// Returns true if the thread is externally suspended and false otherwise.
//
bool JavaThread::wait_for_ext_suspend_completion(int retries, int delay,
- uint32_t *bits) {
+ uint32_t *bits) {
TraceSuspendDebugBits tsdb(this, true /* is_wait */,
false /* !called_by_wait */, bits);
@@ -737,20 +736,21 @@
}
#ifndef PRODUCT
-void JavaThread::record_jump(address target, address instr, const char* file, int line) {
+void JavaThread::record_jump(address target, address instr, const char* file,
+ int line) {
// This should not need to be atomic as the only way for simultaneous
// updates is via interrupts. Even then this should be rare or non-existent
// and we don't care that much anyway.
int index = _jmp_ring_index;
- _jmp_ring_index = (index + 1 ) & (jump_ring_buffer_size - 1);
+ _jmp_ring_index = (index + 1) & (jump_ring_buffer_size - 1);
_jmp_ring[index]._target = (intptr_t) target;
_jmp_ring[index]._instruction = (intptr_t) instr;
_jmp_ring[index]._file = file;
_jmp_ring[index]._line = line;
}
-#endif /* PRODUCT */
+#endif // PRODUCT
// Called by flat profiler
// Callers have already called wait_for_ext_suspend_completion
@@ -759,8 +759,8 @@
bool gotframe = false;
// self suspension saves needed state.
if (has_last_Java_frame() && _anchor.walkable()) {
- *_fr = pd_last_frame();
- gotframe = true;
+ *_fr = pd_last_frame();
+ gotframe = true;
}
return gotframe;
}
@@ -790,7 +790,7 @@
} else {
guarantee(res == strong_roots_parity, "Or else what?");
assert(SharedHeap::heap()->workers()->active_workers() > 0,
- "Should only fail when parallel.");
+ "Should only fail when parallel.");
return false;
}
}
@@ -834,13 +834,13 @@
// Thread::print_on_error() is called by fatal error handler. Don't use
// any lock or allocate memory.
void Thread::print_on_error(outputStream* st, char* buf, int buflen) const {
- if (is_VM_thread()) st->print("VMThread");
- else if (is_Compiler_thread()) st->print("CompilerThread");
- else if (is_Java_thread()) st->print("JavaThread");
- else if (is_GC_task_thread()) st->print("GCTaskThread");
- else if (is_Watcher_thread()) st->print("WatcherThread");
- else if (is_ConcurrentGC_thread()) st->print("ConcurrentGCThread");
- else st->print("Thread");
+ if (is_VM_thread()) st->print("VMThread");
+ else if (is_Compiler_thread()) st->print("CompilerThread");
+ else if (is_Java_thread()) st->print("JavaThread");
+ else if (is_GC_task_thread()) st->print("GCTaskThread");
+ else if (is_Watcher_thread()) st->print("WatcherThread");
+ else if (is_ConcurrentGC_thread()) st->print("ConcurrentGCThread");
+ else st->print("Thread");
st->print(" [stack: " PTR_FORMAT "," PTR_FORMAT "]",
_stack_base - _stack_size, _stack_base);
@@ -882,38 +882,39 @@
// invoke the vm-thread (i.e., and oop allocation). In that case, we also have to make sure that
// no threads which allow_vm_block's are held
void Thread::check_for_valid_safepoint_state(bool potential_vm_operation) {
- // Check if current thread is allowed to block at a safepoint
- if (!(_allow_safepoint_count == 0))
- fatal("Possible safepoint reached by thread that does not allow it");
- if (is_Java_thread() && ((JavaThread*)this)->thread_state() != _thread_in_vm) {
- fatal("LEAF method calling lock?");
- }
+ // Check if current thread is allowed to block at a safepoint
+ if (!(_allow_safepoint_count == 0)) {
+ fatal("Possible safepoint reached by thread that does not allow it");
+ }
+ if (is_Java_thread() && ((JavaThread*)this)->thread_state() != _thread_in_vm) {
+ fatal("LEAF method calling lock?");
+ }
#ifdef ASSERT
- if (potential_vm_operation && is_Java_thread()
- && !Universe::is_bootstrapping()) {
- // Make sure we do not hold any locks that the VM thread also uses.
- // This could potentially lead to deadlocks
- for (Monitor *cur = _owned_locks; cur; cur = cur->next()) {
- // Threads_lock is special, since the safepoint synchronization will not start before this is
- // acquired. Hence, a JavaThread cannot be holding it at a safepoint. So is VMOperationRequest_lock,
- // since it is used to transfer control between JavaThreads and the VMThread
- // Do not *exclude* any locks unless you are absolutely sure it is correct. Ask someone else first!
- if ((cur->allow_vm_block() &&
- cur != Threads_lock &&
- cur != Compile_lock && // Temporary: should not be necessary when we get separate compilation
- cur != VMOperationRequest_lock &&
- cur != VMOperationQueue_lock) ||
- cur->rank() == Mutex::special) {
- fatal(err_msg("Thread holding lock at safepoint that vm can block on: %s", cur->name()));
- }
+ if (potential_vm_operation && is_Java_thread()
+ && !Universe::is_bootstrapping()) {
+ // Make sure we do not hold any locks that the VM thread also uses.
+ // This could potentially lead to deadlocks
+ for (Monitor *cur = _owned_locks; cur; cur = cur->next()) {
+ // Threads_lock is special, since the safepoint synchronization will not start before this is
+ // acquired. Hence, a JavaThread cannot be holding it at a safepoint. So is VMOperationRequest_lock,
+ // since it is used to transfer control between JavaThreads and the VMThread
+ // Do not *exclude* any locks unless you are absolutely sure it is correct. Ask someone else first!
+ if ((cur->allow_vm_block() &&
+ cur != Threads_lock &&
+ cur != Compile_lock && // Temporary: should not be necessary when we get separate compilation
+ cur != VMOperationRequest_lock &&
+ cur != VMOperationQueue_lock) ||
+ cur->rank() == Mutex::special) {
+ fatal(err_msg("Thread holding lock at safepoint that vm can block on: %s", cur->name()));
}
}
-
- if (GCALotAtAllSafepoints) {
- // We could enter a safepoint here and thus have a gc
- InterfaceSupport::check_gc_alot();
- }
+ }
+
+ if (GCALotAtAllSafepoints) {
+ // We could enter a safepoint here and thus have a gc
+ InterfaceSupport::check_gc_alot();
+ }
#endif
}
#endif
@@ -947,7 +948,7 @@
}
bool Thread::set_as_starting_thread() {
- // NOTE: this must be called inside the main thread.
+ // NOTE: this must be called inside the main thread.
return os::create_main_thread((JavaThread*)this);
}
@@ -991,7 +992,8 @@
}
// Creates the initial Thread
-static oop create_initial_thread(Handle thread_group, JavaThread* thread, TRAPS) {
+static oop create_initial_thread(Handle thread_group, JavaThread* thread,
+ TRAPS) {
Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), true, CHECK_NULL);
instanceKlassHandle klass (THREAD, k);
instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_NULL);
@@ -1004,12 +1006,12 @@
JavaValue result(T_VOID);
JavaCalls::call_special(&result, thread_oop,
- klass,
- vmSymbols::object_initializer_name(),
- vmSymbols::threadgroup_string_void_signature(),
- thread_group,
- string,
- CHECK_NULL);
+ klass,
+ vmSymbols::object_initializer_name(),
+ vmSymbols::threadgroup_string_void_signature(),
+ thread_group,
+ string,
+ CHECK_NULL);
return thread_oop();
}
@@ -1019,7 +1021,7 @@
JavaValue result(T_VOID);
JavaCalls::call_static(&result, klass, vmSymbols::initializeSystemClass_name(),
- vmSymbols::void_method_signature(), CHECK);
+ vmSymbols::void_method_signature(), CHECK);
}
char java_runtime_name[128] = "";
@@ -1028,15 +1030,16 @@
// extract the JRE name from sun.misc.Version.java_runtime_name
static const char* get_java_runtime_name(TRAPS) {
Klass* k = SystemDictionary::find(vmSymbols::sun_misc_Version(),
- Handle(), Handle(), CHECK_AND_CLEAR_NULL);
+ Handle(), Handle(), CHECK_AND_CLEAR_NULL);
fieldDescriptor fd;
bool found = k != NULL &&
InstanceKlass::cast(k)->find_local_field(vmSymbols::java_runtime_name_name(),
vmSymbols::string_signature(), &fd);
if (found) {
oop name_oop = k->java_mirror()->obj_field(fd.offset());
- if (name_oop == NULL)
+ if (name_oop == NULL) {
return NULL;
+ }
const char* name = java_lang_String::as_utf8_string(name_oop,
java_runtime_name,
sizeof(java_runtime_name));
@@ -1049,15 +1052,16 @@
// extract the JRE version from sun.misc.Version.java_runtime_version
static const char* get_java_runtime_version(TRAPS) {
Klass* k = SystemDictionary::find(vmSymbols::sun_misc_Version(),
- Handle(), Handle(), CHECK_AND_CLEAR_NULL);
+ Handle(), Handle(), CHECK_AND_CLEAR_NULL);
fieldDescriptor fd;
bool found = k != NULL &&
InstanceKlass::cast(k)->find_local_field(vmSymbols::java_runtime_version_name(),
vmSymbols::string_signature(), &fd);
if (found) {
oop name_oop = k->java_mirror()->obj_field(fd.offset());
- if (name_oop == NULL)
+ if (name_oop == NULL) {
return NULL;
+ }
const char* name = java_lang_String::as_utf8_string(name_oop,
java_runtime_version,
sizeof(java_runtime_version));
@@ -1075,8 +1079,8 @@
if (klass.not_null()) {
JavaValue result(T_VOID);
JavaCalls::call_static(&result, klass, vmSymbols::run_method_name(),
- vmSymbols::void_method_signature(),
- CHECK);
+ vmSymbols::void_method_signature(),
+ CHECK);
}
}
@@ -1107,7 +1111,8 @@
}
-void JavaThread::allocate_threadObj(Handle thread_group, char* thread_name, bool daemon, TRAPS) {
+void JavaThread::allocate_threadObj(Handle thread_group, char* thread_name,
+ bool daemon, TRAPS) {
assert(thread_group.not_null(), "thread group should be specified");
assert(threadObj() == NULL, "should only create Java thread object once");
@@ -1146,7 +1151,7 @@
if (daemon) {
- java_lang_Thread::set_daemon(thread_oop());
+ java_lang_Thread::set_daemon(thread_oop());
}
if (HAS_PENDING_EXCEPTION) {
@@ -1157,12 +1162,12 @@
Handle threadObj(this, this->threadObj());
JavaCalls::call_special(&result,
- thread_group,
- group,
- vmSymbols::add_method_name(),
- vmSymbols::thread_void_signature(),
- threadObj, // Arg 1
- THREAD);
+ thread_group,
+ group,
+ vmSymbols::add_method_name(),
+ vmSymbols::thread_void_signature(),
+ threadObj, // Arg 1
+ THREAD);
}
@@ -1246,30 +1251,31 @@
jlong now = os::javaTimeNanos();
if (remaining == 0) {
- // if we didn't have any tasks we could have waited for a long time
- // consider the time_slept zero and reset time_before_loop
- time_slept = 0;
- time_before_loop = now;
+ // if we didn't have any tasks we could have waited for a long time
+ // consider the time_slept zero and reset time_before_loop
+ time_slept = 0;
+ time_before_loop = now;
} else {
- // need to recalculate since we might have new tasks in _tasks
- time_slept = (int) ((now - time_before_loop) / 1000000);
+ // need to recalculate since we might have new tasks in _tasks
+ time_slept = (int) ((now - time_before_loop) / 1000000);
}
// Change to task list or spurious wakeup of some kind
if (timedout || _should_terminate) {
- break;
+ break;
}
remaining = PeriodicTask::time_to_wait();
if (remaining == 0) {
- // Last task was just disenrolled so loop around and wait until
- // another task gets enrolled
- continue;
+ // Last task was just disenrolled so loop around and wait until
+ // another task gets enrolled
+ continue;
}
remaining -= time_slept;
- if (remaining <= 0)
+ if (remaining <= 0) {
break;
+ }
}
return time_slept;
@@ -1302,13 +1308,13 @@
for (;;) {
if (!ShowMessageBoxOnError
- && (OnError == NULL || OnError[0] == '\0')
- && Arguments::abort_hook() == NULL) {
- os::sleep(this, 2 * 60 * 1000, false);
- fdStream err(defaultStream::output_fd());
- err.print_raw_cr("# [ timer expired, abort... ]");
- // skip atexit/vm_exit/vm_abort hooks
- os::die();
+ && (OnError == NULL || OnError[0] == '\0')
+ && Arguments::abort_hook() == NULL) {
+ os::sleep(this, 2 * 60 * 1000, false);
+ fdStream err(defaultStream::output_fd());
+ err.print_raw_cr("# [ timer expired, abort... ]");
+ // skip atexit/vm_exit/vm_abort hooks
+ os::die();
}
// Wake up 5 seconds later, the fatal handler may reset OnError or
@@ -1387,7 +1393,9 @@
}
void WatcherThread::unpark() {
- MutexLockerEx ml(PeriodicTask_lock->owned_by_self() ? NULL : PeriodicTask_lock, Mutex::_no_safepoint_check_flag);
+ MutexLockerEx ml(PeriodicTask_lock->owned_by_self()
+ ? NULL
+ : PeriodicTask_lock, Mutex::_no_safepoint_check_flag);
PeriodicTask_lock->notify();
}
@@ -1455,7 +1463,7 @@
for (int ji = 0; ji < jump_ring_buffer_size; ji++) {
record_jump(NULL, NULL, NULL, 0);
}
-#endif /* PRODUCT */
+#endif // PRODUCT
set_thread_profiler(NULL);
if (FlatProfiler::is_active()) {
@@ -1486,10 +1494,10 @@
#endif // INCLUDE_ALL_GCS
JavaThread::JavaThread(bool is_attaching_via_jni) :
- Thread()
+ Thread()
#if INCLUDE_ALL_GCS
- , _satb_mark_queue(&_satb_mark_queue_set),
- _dirty_card_queue(&_dirty_card_queue_set)
+ , _satb_mark_queue(&_satb_mark_queue_set),
+ _dirty_card_queue(&_dirty_card_queue_set)
#endif // INCLUDE_ALL_GCS
{
initialize();
@@ -1543,10 +1551,10 @@
static void compiler_thread_entry(JavaThread* thread, TRAPS);
JavaThread::JavaThread(ThreadFunction entry_point, size_t stack_sz) :
- Thread()
+ Thread()
#if INCLUDE_ALL_GCS
- , _satb_mark_queue(&_satb_mark_queue_set),
- _dirty_card_queue(&_dirty_card_queue_set)
+ , _satb_mark_queue(&_satb_mark_queue_set),
+ _dirty_card_queue(&_dirty_card_queue_set)
#endif // INCLUDE_ALL_GCS
{
if (TraceThreadEvents) {
@@ -1575,7 +1583,7 @@
JavaThread::~JavaThread() {
if (TraceThreadEvents) {
- tty->print_cr("terminate thread %p", this);
+ tty->print_cr("terminate thread %p", this);
}
// JSR166 -- return the parker to the free list
@@ -1649,8 +1657,8 @@
EventThreadStart event;
if (event.should_commit()) {
- event.set_javalangthread(java_lang_Thread::thread_id(this->threadObj()));
- event.commit();
+ event.set_javalangthread(java_lang_Thread::thread_id(this->threadObj()));
+ event.commit();
}
// We call another function to do the rest so we are sure that the stack addresses used
@@ -1742,10 +1750,10 @@
if (HAS_PENDING_EXCEPTION) {
ResourceMark rm(this);
jio_fprintf(defaultStream::error_stream(),
- "\nException: %s thrown from the UncaughtExceptionHandler"
- " in thread \"%s\"\n",
- pending_exception()->klass()->external_name(),
- get_thread_name());
+ "\nException: %s thrown from the UncaughtExceptionHandler"
+ " in thread \"%s\"\n",
+ pending_exception()->klass()->external_name(),
+ get_thread_name());
CLEAR_PENDING_EXCEPTION;
}
}
@@ -1754,8 +1762,8 @@
// from java_lang_Thread object
EventThreadEnd event;
if (event.should_commit()) {
- event.set_javalangthread(java_lang_Thread::thread_id(this->threadObj()));
- event.commit();
+ event.set_javalangthread(java_lang_Thread::thread_id(this->threadObj()));
+ event.commit();
}
// Call after last event on thread
@@ -1771,10 +1779,10 @@
JavaValue result(T_VOID);
KlassHandle thread_klass(THREAD, SystemDictionary::Thread_klass());
JavaCalls::call_virtual(&result,
- threadObj, thread_klass,
- vmSymbols::exit_method_name(),
- vmSymbols::void_method_signature(),
- THREAD);
+ threadObj, thread_klass,
+ vmSymbols::exit_method_name(),
+ vmSymbols::void_method_signature(),
+ THREAD);
CLEAR_PENDING_EXCEPTION;
}
}
@@ -2061,23 +2069,20 @@
condition == _async_unsafe_access_error && !has_pending_exception()) {
condition = _no_async_condition; // done
switch (thread_state()) {
- case _thread_in_vm:
- {
- JavaThread* THREAD = this;
- THROW_MSG(vmSymbols::java_lang_InternalError(), "a fault occurred in an unsafe memory access operation");
- }
- case _thread_in_native:
- {
- ThreadInVMfromNative tiv(this);
- JavaThread* THREAD = this;
- THROW_MSG(vmSymbols::java_lang_InternalError(), "a fault occurred in an unsafe memory access operation");
- }
- case _thread_in_Java:
- {
- ThreadInVMfromJava tiv(this);
- JavaThread* THREAD = this;
- THROW_MSG(vmSymbols::java_lang_InternalError(), "a fault occurred in a recent unsafe memory access operation in compiled Java code");
- }
+ case _thread_in_vm: {
+ JavaThread* THREAD = this;
+ THROW_MSG(vmSymbols::java_lang_InternalError(), "a fault occurred in an unsafe memory access operation");
+ }
+ case _thread_in_native: {
+ ThreadInVMfromNative tiv(this);
+ JavaThread* THREAD = this;
+ THROW_MSG(vmSymbols::java_lang_InternalError(), "a fault occurred in an unsafe memory access operation");
+ }
+ case _thread_in_Java: {
+ ThreadInVMfromJava tiv(this);
+ JavaThread* THREAD = this;
+ THROW_MSG(vmSymbols::java_lang_InternalError(), "a fault occurred in a recent unsafe memory access operation in compiled Java code");
+ }
default:
ShouldNotReachHere();
}
@@ -2170,8 +2175,8 @@
set_pending_async_exception(java_throwable);
if (TraceExceptions) {
- ResourceMark rm;
- tty->print_cr("Pending Async. exception installed of type: %s", InstanceKlass::cast(_pending_async_exception->klass())->external_name());
+ ResourceMark rm;
+ tty->print_cr("Pending Async. exception installed of type: %s", InstanceKlass::cast(_pending_async_exception->klass())->external_name());
}
// for AbortVMOnException flag
NOT_PRODUCT(Exceptions::debug_check_abort(InstanceKlass::cast(_pending_async_exception->klass())->external_name()));
@@ -2198,7 +2203,7 @@
void JavaThread::java_suspend() {
{ MutexLocker mu(Threads_lock);
if (!Threads::includes(this) || is_exiting() || this->threadObj() == NULL) {
- return;
+ return;
}
}
@@ -2214,7 +2219,7 @@
// SR_lock to allow the thread to reach a stable thread state if
// it is currently in a transient thread state.
if (is_ext_suspend_completed(false /* !called_by_wait */,
- SuspendRetryDelay, &debug_bits) ) {
+ SuspendRetryDelay, &debug_bits)) {
return;
}
}
@@ -2241,18 +2246,18 @@
// we are in the process of exiting so don't suspend
if (is_exiting()) {
- clear_external_suspend();
- return ret;
+ clear_external_suspend();
+ return ret;
}
assert(_anchor.walkable() ||
- (is_Java_thread() && !((JavaThread*)this)->has_last_Java_frame()),
- "must have walkable stack");
+ (is_Java_thread() && !((JavaThread*)this)->has_last_Java_frame()),
+ "must have walkable stack");
MutexLockerEx ml(SR_lock(), Mutex::_no_safepoint_check_flag);
assert(!this->is_ext_suspended(),
- "a thread trying to self-suspend should not already be suspended");
+ "a thread trying to self-suspend should not already be suspended");
if (this->is_suspend_equivalent()) {
// If we are self-suspending as a result of the lifting of a
@@ -2289,12 +2294,11 @@
// hence doesn't need protection from concurrent access at this stage
void JavaThread::verify_not_published() {
if (!Threads_lock->owned_by_self()) {
- MutexLockerEx ml(Threads_lock, Mutex::_no_safepoint_check_flag);
- assert(!Threads::includes(this),
+ MutexLockerEx ml(Threads_lock, Mutex::_no_safepoint_check_flag);
+ assert(!Threads::includes(this),
"java thread shouldn't have been published yet!");
- }
- else {
- assert(!Threads::includes(this),
+ } else {
+ assert(!Threads::includes(this),
"java thread shouldn't have been published yet!");
}
}
@@ -2474,7 +2478,7 @@
if (os::unguard_memory((char *) low_addr, len)) {
_stack_guard_state = stack_guard_unused;
} else {
- warning("Attempt to unprotect stack guard pages failed.");
+ warning("Attempt to unprotect stack guard pages failed.");
}
}
}
@@ -2570,7 +2574,7 @@
// search for the current bci in that string.
address pc = fst.current()->pc();
nmethod* nm = (nmethod*) fst.current()->cb();
- ScopeDesc* sd = nm->scope_desc_at( pc);
+ ScopeDesc* sd = nm->scope_desc_at(pc);
char buffer[8];
jio_snprintf(buffer, sizeof(buffer), "%d", sd->bci());
size_t len = strlen(buffer);
@@ -2640,7 +2644,7 @@
// the given JavaThread in its _processed_thread field.
class RememberProcessedThread: public StackObj {
NamedThread* _cur_thr;
-public:
+ public:
RememberProcessedThread(JavaThread* jthr) {
Thread* thread = Thread::current();
if (thread->is_Named_thread()) {
@@ -2669,7 +2673,7 @@
Thread::oops_do(f, cld_f, cf);
assert((!has_last_Java_frame() && java_call_counter() == 0) ||
- (has_last_Java_frame() && java_call_counter() > 0), "wrong java_sp info!");
+ (has_last_Java_frame() && java_call_counter() > 0), "wrong java_sp info!");
if (has_last_Java_frame()) {
// Record JavaThread to GC thread
@@ -2729,7 +2733,7 @@
Thread::nmethods_do(cf); // (super method is a no-op)
assert((!has_last_Java_frame() && java_call_counter() == 0) ||
- (has_last_Java_frame() && java_call_counter() > 0), "wrong java_sp info!");
+ (has_last_Java_frame() && java_call_counter() > 0), "wrong java_sp info!");
if (has_last_Java_frame()) {
// Traverse the execution stack
@@ -2779,7 +2783,7 @@
};
void JavaThread::print_thread_state() const {
print_thread_state_on(tty);
-};
+}
#endif // PRODUCT
// Called by Threads::print() for VM_PrintThreads operation
@@ -2809,7 +2813,7 @@
st->print("JavaThread \"%s\"", get_thread_name_string(buf, buflen));
oop thread_obj = threadObj();
if (thread_obj != NULL) {
- if (java_lang_Thread::is_daemon(thread_obj)) st->print(" daemon");
+ if (java_lang_Thread::is_daemon(thread_obj)) st->print(" daemon");
}
st->print(" [");
st->print("%s", _get_thread_state_name(_thread_state));
@@ -2853,7 +2857,7 @@
}
}
#endif // ASSERT
- return get_thread_name_string();
+ return get_thread_name_string();
}
// Returns a non-NULL representation of this thread's name, or a suitable
@@ -2865,20 +2869,18 @@
typeArrayOop name = java_lang_Thread::name(thread_obj);
if (name != NULL) {
if (buf == NULL) {
- name_str = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length());
- }
- else {
- name_str = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length(), buf, buflen);
+ name_str = UNICODE::as_utf8((jchar*) name->base(T_CHAR),
+ name->length());
+ } else {
+ name_str = UNICODE::as_utf8((jchar*) name->base(T_CHAR),
+ name->length(), buf, buflen);
}
- }
- else if (is_attaching_via_jni()) { // workaround for 6412693 - see 6404306
+ } else if (is_attaching_via_jni()) { // workaround for 6412693 - see 6404306
name_str = "<no-name - thread is attaching>";
- }
- else {
+ } else {
name_str = Thread::name();
}
- }
- else {
+ } else {
name_str = Thread::name();
}
assert(name_str != NULL, "unexpected NULL thread name");
@@ -2950,7 +2952,7 @@
Handle thread_oop(Thread::current(),
JNIHandles::resolve_non_null(jni_thread));
assert(InstanceKlass::cast(thread_oop->klass())->is_linked(),
- "must be initialized");
+ "must be initialized");
set_threadObj(thread_oop());
java_lang_Thread::set_thread(thread_oop(), this);
@@ -3165,8 +3167,9 @@
}
// Create a CompilerThread
-CompilerThread::CompilerThread(CompileQueue* queue, CompilerCounters* counters)
-: JavaThread(&compiler_thread_entry) {
+CompilerThread::CompilerThread(CompileQueue* queue,
+ CompilerCounters* counters)
+ : JavaThread(&compiler_thread_entry) {
_env = NULL;
_log = NULL;
_task = NULL;
@@ -3231,8 +3234,9 @@
// way to prevent termination of WatcherThread would be to acquire
// Terminator_lock, but we can't do that without violating the lock rank
// checking in some cases.
- if (wt != NULL)
+ if (wt != NULL) {
tc->do_thread(wt);
+ }
// If CompilerThreads ever become non-JavaThreads, add them here
}
@@ -3290,7 +3294,6 @@
}
jint Threads::create_vm(JavaVMInitArgs* args, bool* canTryAgain) {
-
extern void JDK_Version_init();
// Check version
@@ -3383,7 +3386,7 @@
if (!main_thread->set_as_starting_thread()) {
vm_shutdown_during_initialization(
- "Failed necessary internal allocation. Out of swap space");
+ "Failed necessary internal allocation. Out of swap space");
delete main_thread;
*canTryAgain = false; // don't let caller call JNI_CreateJavaVM again
return JNI_ENOMEM;
@@ -3422,8 +3425,10 @@
VMThread::create();
Thread* vmthread = VMThread::vm_thread();
- if (!os::create_thread(vmthread, os::vm_thread))
- vm_exit_during_initialization("Cannot create VM thread. Out of system resources.");
+ if (!os::create_thread(vmthread, os::vm_thread)) {
+ vm_exit_during_initialization("Cannot create VM thread. "
+ "Out of system resources.");
+ }
// Wait for the VM thread to become ready, and VMThread::run to initialize
// Monitors can have spurious returns, must always check another state flag
@@ -3583,17 +3588,17 @@
}
{
- MutexLockerEx ml(PeriodicTask_lock, Mutex::_no_safepoint_check_flag);
- // Make sure the watcher thread can be started by WatcherThread::start()
- // or by dynamic enrollment.
- WatcherThread::make_startable();
- // Start up the WatcherThread if there are any periodic tasks
- // NOTE: All PeriodicTasks should be registered by now. If they
- // aren't, late joiners might appear to start slowly (we might
- // take a while to process their first tick).
- if (PeriodicTask::num_tasks() > 0) {
- WatcherThread::start();
- }
+ MutexLockerEx ml(PeriodicTask_lock, Mutex::_no_safepoint_check_flag);
+ // Make sure the watcher thread can be started by WatcherThread::start()
+ // or by dynamic enrollment.
+ WatcherThread::make_startable();
+ // Start up the WatcherThread if there are any periodic tasks
+ // NOTE: All PeriodicTasks should be registered by now. If they
+ // aren't, late joiners might appear to start slowly (we might
+ // take a while to process their first tick).
+ if (PeriodicTask::num_tasks() > 0) {
+ WatcherThread::start();
+ }
}
// Give os specific code one last chance to start
@@ -3613,7 +3618,9 @@
// Find a command line agent library and return its entry point for
// -agentlib: -agentpath: -Xrun
// num_symbol_entries must be passed-in since only the caller knows the number of symbols in the array.
-static OnLoadEntry_t lookup_on_load(AgentLibrary* agent, const char *on_load_symbols[], size_t num_symbol_entries) {
+static OnLoadEntry_t lookup_on_load(AgentLibrary* agent,
+ const char *on_load_symbols[],
+ size_t num_symbol_entries) {
OnLoadEntry_t on_load_entry = NULL;
void *library = NULL;
@@ -3749,10 +3756,10 @@
// Find the Agent_OnUnload function.
Agent_OnUnload_t unload_entry = CAST_TO_FN_PTR(Agent_OnUnload_t,
- os::find_agent_function(agent,
- false,
- on_unload_symbols,
- num_symbol_entries));
+ os::find_agent_function(agent,
+ false,
+ on_unload_symbols,
+ num_symbol_entries));
// Invoke the Agent_OnUnload function
if (unload_entry != NULL) {
@@ -4006,8 +4013,9 @@
// Only one thread left, do a notify on the Threads_lock so a thread waiting
// on destroy_vm will wake up.
- if (number_of_non_daemon_threads() == 1)
+ if (number_of_non_daemon_threads() == 1) {
Threads_lock->notify_all();
+ }
}
ThreadService::remove_thread(p, daemon);
@@ -4060,7 +4068,7 @@
bool is_par = sh->n_par_threads() > 0;
assert(!is_par ||
(SharedHeap::heap()->n_par_threads() ==
- SharedHeap::heap()->workers()->active_workers()), "Mismatch");
+ SharedHeap::heap()->workers()->active_workers()), "Mismatch");
int cp = SharedHeap::heap()->strong_roots_parity();
ALL_JAVA_THREADS(p) {
if (p->claim_oops_do(is_par, cp)) {
@@ -4113,9 +4121,10 @@
// Get count Java threads that are waiting to enter the specified monitor.
GrowableArray<JavaThread*>* Threads::get_pending_threads(int count,
- address monitor, bool doLock) {
+ address monitor,
+ bool doLock) {
assert(doLock || SafepointSynchronize::is_at_safepoint(),
- "must grab Threads_lock or be at safepoint");
+ "must grab Threads_lock or be at safepoint");
GrowableArray<JavaThread*>* result = new GrowableArray<JavaThread*>(count);
int i = 0;
@@ -4135,7 +4144,8 @@
}
-JavaThread *Threads::owning_thread_from_monitor_owner(address owner, bool doLock) {
+JavaThread *Threads::owning_thread_from_monitor_owner(address owner,
+ bool doLock) {
assert(doLock ||
Threads_lock->owned_by_self() ||
SafepointSynchronize::is_at_safepoint(),
@@ -4156,7 +4166,6 @@
// like deadlock detection.
if (UseHeavyMonitors) return NULL;
- //
// If we didn't find a matching Java thread and we didn't force use of
// heavyweight monitors, then the owner is the stack address of the
// Lock Word in the owning Java thread's stack.
@@ -4176,15 +4185,15 @@
}
// Threads::print_on() is called at safepoint by VM_PrintThreads operation.
-void Threads::print_on(outputStream* st, bool print_stacks, bool internal_format, bool print_concurrent_locks) {
+void Threads::print_on(outputStream* st, bool print_stacks,
+ bool internal_format, bool print_concurrent_locks) {
char buf[32];
st->print_cr("%s", os::local_time_string(buf, sizeof(buf)));
st->print_cr("Full thread dump %s (%s %s):",
- Abstract_VM_Version::vm_name(),
- Abstract_VM_Version::vm_release(),
- Abstract_VM_Version::vm_info_string()
- );
+ Abstract_VM_Version::vm_name(),
+ Abstract_VM_Version::vm_release(),
+ Abstract_VM_Version::vm_info_string());
st->cr();
#if INCLUDE_ALL_GCS
@@ -4229,7 +4238,8 @@
// that VM is not at safepoint and/or current thread is inside signal handler.
// Don't print stack trace, as the stack may not be walkable. Don't allocate
// memory (even in resource area), it might deadlock the error handler.
-void Threads::print_on_error(outputStream* st, Thread* current, char* buf, int buflen) {
+void Threads::print_on_error(outputStream* st, Thread* current, char* buf,
+ int buflen) {
bool found_current = false;
st->print_cr("Java Threads: ( => current thread )");
ALL_JAVA_THREADS(thread) {
@@ -4301,9 +4311,9 @@
typedef volatile int SpinLockT;
-void Thread::SpinAcquire (volatile int * adr, const char * LockName) {
+void Thread::SpinAcquire(volatile int * adr, const char * LockName) {
if (Atomic::cmpxchg (1, adr, 0) == 0) {
- return; // normal fast-path return
+ return; // normal fast-path return
}
// Slow-path : We've encountered contention -- Spin/Yield/Block strategy.
@@ -4311,24 +4321,24 @@
int ctr = 0;
int Yields = 0;
for (;;) {
- while (*adr != 0) {
- ++ctr;
- if ((ctr & 0xFFF) == 0 || !os::is_MP()) {
- if (Yields > 5) {
- os::naked_short_sleep(1);
- } else {
- os::naked_yield();
- ++Yields;
- }
+ while (*adr != 0) {
+ ++ctr;
+ if ((ctr & 0xFFF) == 0 || !os::is_MP()) {
+ if (Yields > 5) {
+ os::naked_short_sleep(1);
} else {
- SpinPause();
+ os::naked_yield();
+ ++Yields;
}
- }
- if (Atomic::cmpxchg(1, adr, 0) == 0) return;
+ } else {
+ SpinPause();
+ }
+ }
+ if (Atomic::cmpxchg(1, adr, 0) == 0) return;
}
}
-void Thread::SpinRelease (volatile int * adr) {
+void Thread::SpinRelease(volatile int * adr) {
assert(*adr != 0, "invariant");
OrderAccess::fence(); // guarantee at least release consistency.
// Roach-motel semantics.
@@ -4397,53 +4407,53 @@
typedef volatile intptr_t MutexT; // Mux Lock-word
enum MuxBits { LOCKBIT = 1 };
-void Thread::muxAcquire (volatile intptr_t * Lock, const char * LockName) {
+void Thread::muxAcquire(volatile intptr_t * Lock, const char * LockName) {
intptr_t w = Atomic::cmpxchg_ptr(LOCKBIT, Lock, 0);
if (w == 0) return;
if ((w & LOCKBIT) == 0 && Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
- return;
+ return;
}
TEVENT(muxAcquire - Contention);
ParkEvent * const Self = Thread::current()->_MuxEvent;
assert((intptr_t(Self) & LOCKBIT) == 0, "invariant");
for (;;) {
- int its = (os::is_MP() ? 100 : 0) + 1;
-
- // Optional spin phase: spin-then-park strategy
- while (--its >= 0) {
- w = *Lock;
- if ((w & LOCKBIT) == 0 && Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
+ int its = (os::is_MP() ? 100 : 0) + 1;
+
+ // Optional spin phase: spin-then-park strategy
+ while (--its >= 0) {
+ w = *Lock;
+ if ((w & LOCKBIT) == 0 && Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
+ return;
+ }
+ }
+
+ Self->reset();
+ Self->OnList = intptr_t(Lock);
+ // The following fence() isn't _strictly necessary as the subsequent
+ // CAS() both serializes execution and ratifies the fetched *Lock value.
+ OrderAccess::fence();
+ for (;;) {
+ w = *Lock;
+ if ((w & LOCKBIT) == 0) {
+ if (Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
+ Self->OnList = 0; // hygiene - allows stronger asserts
return;
- }
- }
-
- Self->reset();
- Self->OnList = intptr_t(Lock);
- // The following fence() isn't _strictly necessary as the subsequent
- // CAS() both serializes execution and ratifies the fetched *Lock value.
- OrderAccess::fence();
- for (;;) {
- w = *Lock;
- if ((w & LOCKBIT) == 0) {
- if (Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
- Self->OnList = 0; // hygiene - allows stronger asserts
- return;
- }
- continue; // Interference -- *Lock changed -- Just retry
}
- assert(w & LOCKBIT, "invariant");
- Self->ListNext = (ParkEvent *) (w & ~LOCKBIT);
- if (Atomic::cmpxchg_ptr(intptr_t(Self)|LOCKBIT, Lock, w) == w) break;
- }
-
- while (Self->OnList != 0) {
- Self->park();
- }
+ continue; // Interference -- *Lock changed -- Just retry
+ }
+ assert(w & LOCKBIT, "invariant");
+ Self->ListNext = (ParkEvent *) (w & ~LOCKBIT);
+ if (Atomic::cmpxchg_ptr(intptr_t(Self)|LOCKBIT, Lock, w) == w) break;
+ }
+
+ while (Self->OnList != 0) {
+ Self->park();
+ }
}
}
-void Thread::muxAcquireW (volatile intptr_t * Lock, ParkEvent * ev) {
+void Thread::muxAcquireW(volatile intptr_t * Lock, ParkEvent * ev) {
intptr_t w = Atomic::cmpxchg_ptr(LOCKBIT, Lock, 0);
if (w == 0) return;
if ((w & LOCKBIT) == 0 && Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
@@ -4528,7 +4538,7 @@
// bidirectional fence/MEMBAR semantics, ensuring that all prior memory operations
// executed within the critical section are complete and globally visible before the
// store (CAS) to the lock-word that releases the lock becomes globally visible.
-void Thread::muxRelease (volatile intptr_t * Lock) {
+void Thread::muxRelease(volatile intptr_t * Lock) {
for (;;) {
const intptr_t w = Atomic::cmpxchg_ptr(0, Lock, LOCKBIT);
assert(w & LOCKBIT, "invariant");
--- a/hotspot/src/share/vm/runtime/thread.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/thread.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -115,7 +115,7 @@
void operator delete(void* p);
protected:
- static void* allocate(size_t size, bool throw_excpt, MEMFLAGS flags = mtThread);
+ static void* allocate(size_t size, bool throw_excpt, MEMFLAGS flags = mtThread);
private:
// ***************************************************************
@@ -178,7 +178,6 @@
// 2. It would be more natural if set_external_suspend() is private and
// part of java_suspend(), but that probably would affect the suspend/query
// performance. Need more investigation on this.
- //
// suspend/resume lock: used for self-suspend
Monitor* _SR_lock;
@@ -225,10 +224,10 @@
// claimed as a task.
jint _oops_do_parity;
- public:
- void set_last_handle_mark(HandleMark* mark) { _last_handle_mark = mark; }
- HandleMark* last_handle_mark() const { return _last_handle_mark; }
- private:
+ public:
+ void set_last_handle_mark(HandleMark* mark) { _last_handle_mark = mark; }
+ HandleMark* last_handle_mark() const { return _last_handle_mark; }
+ private:
// debug support for checking if code does allow safepoints or not
// GC points in the VM can happen because of allocation, invoking a VM operation, or blocking on
@@ -445,9 +444,9 @@
virtual void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
// Handles the parallel case for the method below.
-private:
+ private:
bool claim_oops_do_par_case(int collection_parity);
-public:
+ public:
// Requires that "collection_parity" is that of the current roots
// iteration. If "is_par" is false, sets the parity of "this" to
// "collection_parity", and returns "true". If "is_par" is true,
@@ -514,7 +513,7 @@
void record_stack_base_and_size();
bool on_local_stack(address adr) const {
- /* QQQ this has knowledge of direction, ought to be a stack method */
+ // QQQ this has knowledge of direction, ought to be a stack method
return (_stack_base >= adr && adr >= (_stack_base - _stack_size));
}
@@ -624,8 +623,8 @@
inline Thread* Thread::current() {
#ifdef ASSERT
-// This function is very high traffic. Define PARANOID to enable expensive
-// asserts.
+ // This function is very high traffic. Define PARANOID to enable expensive
+ // asserts.
#ifdef PARANOID
// Signal handler should call ThreadLocalStorage::get_thread_slow()
Thread* t = ThreadLocalStorage::get_thread_slow();
@@ -664,9 +663,9 @@
// Worker threads are named and have an id of an assigned work.
class WorkerThread: public NamedThread {
-private:
+ private:
uint _id;
-public:
+ public:
WorkerThread() : _id(0) { }
virtual bool is_Worker_thread() const { return true; }
@@ -843,8 +842,8 @@
jint _in_deopt_handler; // count of deoptimization
// handlers thread is in
volatile bool _doing_unsafe_access; // Thread may fault due to unsafe access
- bool _do_not_unlock_if_synchronized; // Do not unlock the receiver of a synchronized method (since it was
- // never locked) when throwing an exception. Used by interpreter only.
+ bool _do_not_unlock_if_synchronized; // Do not unlock the receiver of a synchronized method (since it was
+ // never locked) when throwing an exception. Used by interpreter only.
// JNI attach states:
enum JNIAttachStates {
@@ -898,13 +897,13 @@
#ifndef PRODUCT
int _jmp_ring_index;
struct {
- // We use intptr_t instead of address so debugger doesn't try and display strings
- intptr_t _target;
- intptr_t _instruction;
- const char* _file;
- int _line;
+ // We use intptr_t instead of address so debugger doesn't try and display strings
+ intptr_t _target;
+ intptr_t _instruction;
+ const char* _file;
+ int _line;
} _jmp_ring[jump_ring_buffer_size];
-#endif /* PRODUCT */
+#endif // PRODUCT
#if INCLUDE_ALL_GCS
// Support for G1 barriers
@@ -1071,7 +1070,7 @@
// Warning: is_ext_suspend_completed() may temporarily drop the
// SR_lock to allow the thread to reach a stable thread state if
// it is currently in a transient thread state.
- return is_ext_suspend_completed(false /*!called_by_wait */,
+ return is_ext_suspend_completed(false /* !called_by_wait */,
SuspendRetryDelay, bits);
}
@@ -1096,7 +1095,7 @@
// Whenever a thread transitions from native to vm/java it must suspend
// if external|deopt suspend is present.
bool is_suspend_after_native() const {
- return (_suspend_flags & (_external_suspend | _deopt_suspend) ) != 0;
+ return (_suspend_flags & (_external_suspend | _deopt_suspend)) != 0;
}
// external suspend request is completed
@@ -1113,7 +1112,7 @@
// when a suspend equivalent condition lifts.
bool handle_special_suspend_equivalent_condition() {
assert(is_suspend_equivalent(),
- "should only be called in a suspend equivalence condition");
+ "should only be called in a suspend equivalence condition");
MutexLockerEx ml(SR_lock(), Mutex::_no_safepoint_check_flag);
bool ret = is_external_suspend();
if (!ret) {
@@ -1137,8 +1136,8 @@
bool is_suspend_equivalent() const { return _suspend_equivalent; }
- void set_suspend_equivalent() { _suspend_equivalent = true; };
- void clear_suspend_equivalent() { _suspend_equivalent = false; };
+ void set_suspend_equivalent() { _suspend_equivalent = true; }
+ void clear_suspend_equivalent() { _suspend_equivalent = false; }
// Thread.stop support
void send_thread_stop(oop throwable);
@@ -1238,18 +1237,25 @@
// Stack overflow support
inline size_t stack_available(address cur_sp);
- address stack_yellow_zone_base()
- { return (address)(stack_base() - (stack_size() - (stack_red_zone_size() + stack_yellow_zone_size()))); }
- size_t stack_yellow_zone_size()
- { return StackYellowPages * os::vm_page_size(); }
- address stack_red_zone_base()
- { return (address)(stack_base() - (stack_size() - stack_red_zone_size())); }
- size_t stack_red_zone_size()
- { return StackRedPages * os::vm_page_size(); }
- bool in_stack_yellow_zone(address a)
- { return (a <= stack_yellow_zone_base()) && (a >= stack_red_zone_base()); }
- bool in_stack_red_zone(address a)
- { return (a <= stack_red_zone_base()) && (a >= (address)((intptr_t)stack_base() - stack_size())); }
+ address stack_yellow_zone_base() {
+ return (address)(stack_base() -
+ (stack_size() -
+ (stack_red_zone_size() + stack_yellow_zone_size())));
+ }
+ size_t stack_yellow_zone_size() {
+ return StackYellowPages * os::vm_page_size();
+ }
+ address stack_red_zone_base() {
+ return (address)(stack_base() - (stack_size() - stack_red_zone_size()));
+ }
+ size_t stack_red_zone_size() { return StackRedPages * os::vm_page_size(); }
+ bool in_stack_yellow_zone(address a) {
+ return (a <= stack_yellow_zone_base()) && (a >= stack_red_zone_base());
+ }
+ bool in_stack_red_zone(address a) {
+ return (a <= stack_red_zone_base()) &&
+ (a >= (address)((intptr_t)stack_base() - stack_size()));
+ }
void create_stack_guard_pages();
void remove_stack_guard_pages();
@@ -1289,14 +1295,14 @@
#ifndef PRODUCT
void record_jump(address target, address instr, const char* file, int line);
-#endif /* PRODUCT */
+#endif // PRODUCT
// For assembly stub generation
static ByteSize threadObj_offset() { return byte_offset_of(JavaThread, _threadObj); }
#ifndef PRODUCT
static ByteSize jmp_ring_index_offset() { return byte_offset_of(JavaThread, _jmp_ring_index); }
static ByteSize jmp_ring_offset() { return byte_offset_of(JavaThread, _jmp_ring); }
-#endif /* PRODUCT */
+#endif // PRODUCT
static ByteSize jni_environment_offset() { return byte_offset_of(JavaThread, _jni_environment); }
static ByteSize last_Java_sp_offset() {
return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_sp_offset();
@@ -1339,25 +1345,28 @@
// Only return NULL if thread is off the thread list; starting to
// exit should not return NULL.
if (thread_from_jni_env->is_terminated()) {
- thread_from_jni_env->block_if_vm_exited();
- return NULL;
+ thread_from_jni_env->block_if_vm_exited();
+ return NULL;
} else {
- return thread_from_jni_env;
+ return thread_from_jni_env;
}
}
// JNI critical regions. These can nest.
bool in_critical() { return _jni_active_critical > 0; }
bool in_last_critical() { return _jni_active_critical == 1; }
- void enter_critical() { assert(Thread::current() == this ||
- Thread::current()->is_VM_thread() && SafepointSynchronize::is_synchronizing(),
- "this must be current thread or synchronizing");
- _jni_active_critical++; }
- void exit_critical() { assert(Thread::current() == this,
- "this must be current thread");
- _jni_active_critical--;
- assert(_jni_active_critical >= 0,
- "JNI critical nesting problem?"); }
+ void enter_critical() {
+ assert(Thread::current() == this ||
+ (Thread::current()->is_VM_thread() &&
+ SafepointSynchronize::is_synchronizing()),
+ "this must be current thread or synchronizing");
+ _jni_active_critical++;
+ }
+ void exit_critical() {
+ assert(Thread::current() == this, "this must be current thread");
+ _jni_active_critical--;
+ assert(_jni_active_critical >= 0, "JNI critical nesting problem?");
+ }
// Checked JNI, is the programmer required to check for exceptions, specify which function name
bool is_pending_jni_exception_check() const { return _pending_jni_exception_check_fn != NULL; }
@@ -1406,15 +1415,15 @@
char* name() const { return (char*)get_thread_name(); }
void print_on(outputStream* st) const;
void print_value();
- void print_thread_state_on(outputStream* ) const PRODUCT_RETURN;
- void print_thread_state() const PRODUCT_RETURN;
+ void print_thread_state_on(outputStream*) const PRODUCT_RETURN;
+ void print_thread_state() const PRODUCT_RETURN;
void print_on_error(outputStream* st, char* buf, int buflen) const;
void verify();
const char* get_thread_name() const;
-private:
+ private:
// factor out low-level mechanics for use in both normal and error cases
const char* get_thread_name_string(char* buf = NULL, int buflen = 0) const;
-public:
+ public:
const char* get_threadgroup_name() const;
const char* get_parent_name() const;
@@ -1456,20 +1465,20 @@
// Profiling operation (see fprofile.cpp)
public:
- bool profile_last_Java_frame(frame* fr);
+ bool profile_last_Java_frame(frame* fr);
private:
- ThreadProfiler* _thread_profiler;
+ ThreadProfiler* _thread_profiler;
private:
- friend class FlatProfiler; // uses both [gs]et_thread_profiler.
- friend class FlatProfilerTask; // uses get_thread_profiler.
- friend class ThreadProfilerMark; // uses get_thread_profiler.
- ThreadProfiler* get_thread_profiler() { return _thread_profiler; }
- ThreadProfiler* set_thread_profiler(ThreadProfiler* tp) {
- ThreadProfiler* result = _thread_profiler;
- _thread_profiler = tp;
- return result;
- }
+ friend class FlatProfiler; // uses both [gs]et_thread_profiler.
+ friend class FlatProfilerTask; // uses get_thread_profiler.
+ friend class ThreadProfilerMark; // uses get_thread_profiler.
+ ThreadProfiler* get_thread_profiler() { return _thread_profiler; }
+ ThreadProfiler* set_thread_profiler(ThreadProfiler* tp) {
+ ThreadProfiler* result = _thread_profiler;
+ _thread_profiler = tp;
+ return result;
+ }
public:
// Returns the running thread as a JavaThread
@@ -1692,15 +1701,15 @@
// JSR166 per-thread parker
-private:
+ private:
Parker* _parker;
-public:
+ public:
Parker* parker() { return _parker; }
// Biased locking support
-private:
+ private:
GrowableArray<MonitorInfo*>* _cached_monitor_info;
-public:
+ public:
GrowableArray<MonitorInfo*>* cached_monitor_info() { return _cached_monitor_info; }
void set_cached_monitor_info(GrowableArray<MonitorInfo*>* info) { _cached_monitor_info = info; }
@@ -1708,12 +1717,12 @@
bool is_attaching_via_jni() const { return _jni_attach_state == _attaching_via_jni; }
bool has_attached_via_jni() const { return is_attaching_via_jni() || _jni_attach_state == _attached_via_jni; }
inline void set_done_attaching_via_jni();
-private:
+ private:
// This field is used to determine if a thread has claimed
// a par_id: it is UINT_MAX if the thread has not claimed a par_id;
// otherwise its value is the par_id that has been claimed.
uint _claimed_par_id;
-public:
+ public:
uint get_claimed_par_id() { return _claimed_par_id; }
void set_claimed_par_id(uint id) { _claimed_par_id = id; }
};
@@ -1766,7 +1775,7 @@
void set_env(ciEnv* env) { _env = env; }
BufferBlob* get_buffer_blob() const { return _buffer_blob; }
- void set_buffer_blob(BufferBlob* b) { _buffer_blob = b; };
+ void set_buffer_blob(BufferBlob* b) { _buffer_blob = b; }
// Get/set the thread's logging information
CompileLog* log() { return _log; }
@@ -1782,9 +1791,9 @@
void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
#ifndef PRODUCT
-private:
+ private:
IdealGraphPrinter *_ideal_graph_printer;
-public:
+ public:
IdealGraphPrinter *ideal_graph_printer() { return _ideal_graph_printer; }
void set_ideal_graph_printer(IdealGraphPrinter *n) { _ideal_graph_printer = n; }
#endif
@@ -1885,13 +1894,13 @@
// is true, then Threads_lock is grabbed as needed. Otherwise, the
// VM needs to be at a safepoint.
static GrowableArray<JavaThread*>* get_pending_threads(int count,
- address monitor, bool doLock);
+ address monitor, bool doLock);
// Get owning Java thread from the monitor's owner field. If doLock
// is true, then Threads_lock is grabbed as needed. Otherwise, the
// VM needs to be at a safepoint.
static JavaThread *owning_thread_from_monitor_owner(address owner,
- bool doLock);
+ bool doLock);
// Number of threads on the active threads list
static int number_of_threads() { return _number_of_threads; }
@@ -1911,9 +1920,9 @@
};
class SignalHandlerMark: public StackObj {
-private:
+ private:
Thread* _thread;
-public:
+ public:
SignalHandlerMark(Thread* t) {
_thread = t;
if (_thread) _thread->enter_signal_handler();
--- a/hotspot/src/share/vm/runtime/virtualspace.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/virtualspace.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -38,7 +38,7 @@
}
ReservedSpace::ReservedSpace(size_t size) {
- size_t page_size = os::page_size_for_region(size, size, 1);
+ size_t page_size = os::page_size_for_region(size, 1);
bool large_pages = page_size != (size_t)os::vm_page_size();
// Don't force the alignment to be large page aligned,
// since that will waste memory.
@@ -357,7 +357,7 @@
bool VirtualSpace::initialize(ReservedSpace rs, size_t committed_size) {
- const size_t max_commit_granularity = os::page_size_for_region(rs.size(), rs.size(), 1);
+ const size_t max_commit_granularity = os::page_size_for_region(rs.size(), 1);
return initialize_with_granularity(rs, committed_size, max_commit_granularity);
}
@@ -992,7 +992,7 @@
case Disable:
return vs.initialize_with_granularity(rs, 0, os::vm_page_size());
case Commit:
- return vs.initialize_with_granularity(rs, 0, os::page_size_for_region(rs.size(), rs.size(), 1));
+ return vs.initialize_with_granularity(rs, 0, os::page_size_for_region(rs.size(), 1));
}
}
--- a/hotspot/src/share/vm/runtime/vmStructs.cpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/runtime/vmStructs.cpp Thu Sep 25 16:21:54 2014 -0700
@@ -2518,7 +2518,6 @@
/*********************************************/ \
\
declare_constant(InvocationEntryBci) \
- declare_constant(InvalidOSREntryBci) \
\
/***************/ \
/* OopMapValue */ \
--- a/hotspot/src/share/vm/utilities/globalDefinitions.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/utilities/globalDefinitions.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -66,6 +66,9 @@
#ifndef ATTRIBUTE_PRINTF
#define ATTRIBUTE_PRINTF(fmt, vargs)
#endif
+#ifndef ATTRIBUTE_SCANF
+#define ATTRIBUTE_SCANF(fmt, vargs)
+#endif
#include "utilities/macros.hpp"
@@ -882,8 +885,7 @@
// Handy constants for deciding which compiler mode to use.
enum MethodCompilation {
- InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation
- InvalidOSREntryBci = -2
+ InvocationEntryBci = -1 // i.e., not a on-stack replacement compilation
};
// Enumeration to distinguish tiers of compilation
--- a/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -271,15 +271,16 @@
#define PRAGMA_IMPLEMENTATION #pragma implementation
#define VALUE_OBJ_CLASS_SPEC
-#ifndef ATTRIBUTE_PRINTF
// Diagnostic pragmas like the ones defined below in PRAGMA_FORMAT_NONLITERAL_IGNORED
// were only introduced in GCC 4.2. Because we have no other possibility to ignore
// these warnings for older versions of GCC, we simply don't decorate our printf-style
// functions with __attribute__(format) in that case.
#if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2)) || (__GNUC__ > 4)
+#ifndef ATTRIBUTE_PRINTF
#define ATTRIBUTE_PRINTF(fmt,vargs) __attribute__((format(printf, fmt, vargs)))
-#else
-#define ATTRIBUTE_PRINTF(fmt,vargs)
+#endif
+#ifndef ATTRIBUTE_SCANF
+#define ATTRIBUTE_SCANF(fmt,vargs) __attribute__((format(scanf, fmt, vargs)))
#endif
#endif
--- a/hotspot/src/share/vm/utilities/globalDefinitions_sparcWorks.hpp Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/src/share/vm/utilities/globalDefinitions_sparcWorks.hpp Thu Sep 25 16:21:54 2014 -0700
@@ -265,14 +265,6 @@
inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
-
-// Misc
-// NOTE: This one leads to an infinite recursion on Linux
-#ifndef LINUX
-int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr);
-#define vsnprintf local_vsnprintf
-#endif
-
// Portability macros
#define PRAGMA_INTERFACE
#define PRAGMA_IMPLEMENTATION
--- a/hotspot/test/TEST.groups Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/test/TEST.groups Thu Sep 25 16:21:54 2014 -0700
@@ -342,7 +342,8 @@
-runtime/Unsafe/RangeCheck.java \
-runtime/SharedArchiveFile/CdsSameObjectAlignment.java \
-runtime/SharedArchiveFile/DefaultUseWithClient.java \
- -runtime/Thread/CancellableThreadTest.java
+ -runtime/Thread/CancellableThreadTest.java \
+ -runtime/runtime/7158988/FieldMonitor.java
hotspot_runtime_closed = \
sanity/ExecuteInternalVMTests.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/osr/TestRangeCheck.java Thu Sep 25 16:21:54 2014 -0700
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test TestRangeCheck
+ * @bug 8054883
+ * @summary Tests that range check is not skipped
+ */
+
+public class TestRangeCheck {
+ public static void main(String args[]) {
+ try {
+ test();
+ throw new AssertionError("Expected ArrayIndexOutOfBoundsException was not thrown");
+ } catch (ArrayIndexOutOfBoundsException e) {
+ System.out.println("Expected ArrayIndexOutOfBoundsException was thrown");
+ }
+ }
+
+ private static void test() {
+ int arr[] = new int[1];
+ int result = 1;
+
+ // provoke OSR compilation
+ for (int i = 0; i < Integer.MAX_VALUE; i++) {
+ }
+
+ if (result > 0 && arr[~result] > 0) {
+ arr[~result] = 0;
+ }
+ }
+}
--- a/hotspot/test/gc/arguments/TestParallelHeapSizeFlags.java Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/test/gc/arguments/TestParallelHeapSizeFlags.java Thu Sep 25 16:21:54 2014 -0700
@@ -22,7 +22,6 @@
*/
/*
- * @ignore 8049864
* @test TestParallelHeapSizeFlags
* @key gc
* @bug 8006088
--- a/hotspot/test/gc/class_unloading/AllocateBeyondMetaspaceSize.java Thu Sep 25 12:40:17 2014 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,59 +0,0 @@
-/*
- * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-import sun.hotspot.WhiteBox;
-
-class AllocateBeyondMetaspaceSize {
- public static Object dummy;
-
- public static void main(String [] args) {
- if (args.length != 2) {
- throw new IllegalArgumentException("Usage: <MetaspaceSize> <YoungGenSize>");
- }
-
- long metaspaceSize = Long.parseLong(args[0]);
- long youngGenSize = Long.parseLong(args[1]);
-
- run(metaspaceSize, youngGenSize);
- }
-
- private static void run(long metaspaceSize, long youngGenSize) {
- WhiteBox wb = WhiteBox.getWhiteBox();
-
- long allocationBeyondMetaspaceSize = metaspaceSize * 2;
- long metaspace = wb.allocateMetaspace(null, allocationBeyondMetaspaceSize);
-
- triggerYoungGC(youngGenSize);
-
- wb.freeMetaspace(null, metaspace, metaspace);
- }
-
- private static void triggerYoungGC(long youngGenSize) {
- long approxAllocSize = 32 * 1024;
- long numAllocations = 2 * youngGenSize / approxAllocSize;
-
- for (long i = 0; i < numAllocations; i++) {
- dummy = new byte[(int)approxAllocSize];
- }
- }
-}
--- a/hotspot/test/gc/class_unloading/TestCMSClassUnloadingEnabledHWM.java Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/test/gc/class_unloading/TestCMSClassUnloadingEnabledHWM.java Thu Sep 25 16:21:54 2014 -0700
@@ -26,7 +26,7 @@
* @key gc
* @bug 8049831
* @library /testlibrary /testlibrary/whitebox
- * @build TestCMSClassUnloadingEnabledHWM AllocateBeyondMetaspaceSize
+ * @build TestCMSClassUnloadingEnabledHWM
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* sun.hotspot.WhiteBox$WhiteBoxPermission
* @run driver TestCMSClassUnloadingEnabledHWM
@@ -35,9 +35,11 @@
import com.oracle.java.testlibrary.OutputAnalyzer;
import com.oracle.java.testlibrary.ProcessTools;
-
+import java.lang.management.GarbageCollectorMXBean;
+import java.lang.management.ManagementFactory;
import java.util.ArrayList;
import java.util.Arrays;
+import sun.hotspot.WhiteBox;
public class TestCMSClassUnloadingEnabledHWM {
private static long MetaspaceSize = 32 * 1024 * 1024;
@@ -48,15 +50,18 @@
"-Xbootclasspath/a:.",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+WhiteBoxAPI",
+ "-Xmx128m",
+ "-XX:CMSMaxAbortablePrecleanTime=1",
+ "-XX:CMSWaitDuration=50",
"-XX:MetaspaceSize=" + MetaspaceSize,
"-Xmn" + YoungGenSize,
"-XX:+UseConcMarkSweepGC",
"-XX:" + (enableUnloading ? "+" : "-") + "CMSClassUnloadingEnabled",
"-XX:+PrintHeapAtGC",
"-XX:+PrintGCDetails",
- "AllocateBeyondMetaspaceSize",
- "" + MetaspaceSize,
- "" + YoungGenSize);
+ "-XX:+PrintGCTimeStamps",
+ TestCMSClassUnloadingEnabledHWM.AllocateBeyondMetaspaceSize.class.getName(),
+ "" + MetaspaceSize);
return new OutputAnalyzer(pb.start());
}
@@ -88,5 +93,37 @@
testWithCMSClassUnloading();
testWithoutCMSClassUnloading();
}
+
+ public static class AllocateBeyondMetaspaceSize {
+ public static void main(String [] args) throws Exception {
+ if (args.length != 1) {
+ throw new IllegalArgumentException("Usage: <MetaspaceSize>");
+ }
+
+ WhiteBox wb = WhiteBox.getWhiteBox();
+
+ // Allocate past the MetaspaceSize limit.
+ long metaspaceSize = Long.parseLong(args[0]);
+ long allocationBeyondMetaspaceSize = metaspaceSize * 2;
+ long metaspace = wb.allocateMetaspace(null, allocationBeyondMetaspaceSize);
+
+ // Wait for at least one GC to occur. The caller will parse the log files produced.
+ GarbageCollectorMXBean cmsGCBean = getCMSGCBean();
+ while (cmsGCBean.getCollectionCount() == 0) {
+ Thread.sleep(100);
+ }
+
+ wb.freeMetaspace(null, metaspace, metaspace);
+ }
+
+ private static GarbageCollectorMXBean getCMSGCBean() {
+ for (GarbageCollectorMXBean gcBean : ManagementFactory.getGarbageCollectorMXBeans()) {
+ if (gcBean.getObjectName().toString().equals("java.lang:type=GarbageCollector,name=ConcurrentMarkSweep")) {
+ return gcBean;
+ }
+ }
+ return null;
+ }
+ }
}
--- a/hotspot/test/gc/class_unloading/TestG1ClassUnloadingHWM.java Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/test/gc/class_unloading/TestG1ClassUnloadingHWM.java Thu Sep 25 16:21:54 2014 -0700
@@ -26,7 +26,7 @@
* @key gc
* @bug 8049831
* @library /testlibrary /testlibrary/whitebox
- * @build TestG1ClassUnloadingHWM AllocateBeyondMetaspaceSize
+ * @build TestG1ClassUnloadingHWM
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* sun.hotspot.WhiteBox$WhiteBoxPermission
* @run driver TestG1ClassUnloadingHWM
@@ -35,9 +35,9 @@
import com.oracle.java.testlibrary.OutputAnalyzer;
import com.oracle.java.testlibrary.ProcessTools;
-
import java.util.ArrayList;
import java.util.Arrays;
+import sun.hotspot.WhiteBox;
public class TestG1ClassUnloadingHWM {
private static long MetaspaceSize = 32 * 1024 * 1024;
@@ -54,7 +54,7 @@
"-XX:" + (enableUnloading ? "+" : "-") + "ClassUnloadingWithConcurrentMark",
"-XX:+PrintHeapAtGC",
"-XX:+PrintGCDetails",
- "AllocateBeyondMetaspaceSize",
+ TestG1ClassUnloadingHWM.AllocateBeyondMetaspaceSize.class.getName(),
"" + MetaspaceSize,
"" + YoungGenSize);
return new OutputAnalyzer(pb.start());
@@ -88,5 +88,36 @@
testWithG1ClassUnloading();
testWithoutG1ClassUnloading();
}
+
+ public static class AllocateBeyondMetaspaceSize {
+ public static Object dummy;
+
+ public static void main(String [] args) throws Exception {
+ if (args.length != 2) {
+ throw new IllegalArgumentException("Usage: <MetaspaceSize> <YoungGenSize>");
+ }
+
+ WhiteBox wb = WhiteBox.getWhiteBox();
+
+ // Allocate past the MetaspaceSize limit
+ long metaspaceSize = Long.parseLong(args[0]);
+ long allocationBeyondMetaspaceSize = metaspaceSize * 2;
+ long metaspace = wb.allocateMetaspace(null, allocationBeyondMetaspaceSize);
+
+ long youngGenSize = Long.parseLong(args[1]);
+ triggerYoungGCs(youngGenSize);
+
+ wb.freeMetaspace(null, metaspace, metaspace);
+ }
+
+ public static void triggerYoungGCs(long youngGenSize) {
+ long approxAllocSize = 32 * 1024;
+ long numAllocations = 2 * youngGenSize / approxAllocSize;
+
+ for (long i = 0; i < numAllocations; i++) {
+ dummy = new byte[(int)approxAllocSize];
+ }
+ }
+ }
}
--- a/hotspot/test/gc/g1/TestDeferredRSUpdate.java Thu Sep 25 12:40:17 2014 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,79 +0,0 @@
-/*
- * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-/*
- * @test TestDeferredRSUpdate
- * @bug 8040977 8052170
- * @summary Ensure that running with -XX:-G1DeferredRSUpdate does not crash the VM
- * @key gc
- * @library /testlibrary
- */
-
-import com.oracle.java.testlibrary.ProcessTools;
-import com.oracle.java.testlibrary.OutputAnalyzer;
-
-public class TestDeferredRSUpdate {
- public static void main(String[] args) throws Exception {
- GCTest.main(args);
-
- ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
- "-Xmx10M",
- "-XX:+PrintGCDetails",
- // G1DeferredRSUpdate is a develop option, but we cannot limit execution of this test to only debug VMs.
- "-XX:+IgnoreUnrecognizedVMOptions",
- "-XX:-G1DeferredRSUpdate",
- GCTest.class.getName());
-
- OutputAnalyzer output = new OutputAnalyzer(pb.start());
- output.shouldHaveExitValue(0);
- }
-
- static class GCTest {
- private static Object[] garbage = new Object[32];
-
- public static void main(String [] args) {
- System.out.println("Creating garbage");
- // Create 128MB of garbage. This should result in at least one minor GC, with
- // some objects copied to old gen. As references from old to young are installed,
- // the crash due to the use before initialize occurs.
- Object prev = null;
- Object prevPrev = null;
- for (int i = 0; i < 1024; i++) {
- Object[] next = new Object[32 * 1024];
- next[0] = prev;
- next[1] = prevPrev;
-
- Object[] cur = (Object[]) garbage[i % garbage.length];
- if (cur != null) {
- cur[0] = null;
- cur[1] = null;
- }
- garbage[i % garbage.length] = next;
-
- prevPrev = prev;
- prev = next;
- }
- System.out.println("Done");
- }
- }
-}
--- a/hotspot/test/gc/g1/TestHumongousShrinkHeap.java Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/test/gc/g1/TestHumongousShrinkHeap.java Thu Sep 25 16:21:54 2014 -0700
@@ -26,7 +26,7 @@
* @bug 8036025 8056043
* @summary Verify that heap shrinks after GC in the presence of fragmentation due to humongous objects
* @library /testlibrary
- * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:+UseG1GC -XX:G1HeapRegionSize=1M -verbose:gc TestHumongousShrinkHeap
+ * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=12 -XX:+UseG1GC -XX:G1HeapRegionSize=1M -verbose:gc TestHumongousShrinkHeap
*/
import java.lang.management.ManagementFactory;
@@ -41,12 +41,24 @@
public static final String MIN_FREE_RATIO_FLAG_NAME = "MinHeapFreeRatio";
public static final String MAX_FREE_RATIO_FLAG_NAME = "MaxHeapFreeRatio";
- private static final ArrayList<ArrayList<byte[]>> garbage = new ArrayList<>();
- private static final int PAGE_SIZE = 1024 * 1024; // 1M
- private static final int PAGES_NUM = 5;
+ private static final List<List<byte[]>> garbage = new ArrayList();
+ private static final int REGION_SIZE = 1024 * 1024; // 1M
+ private static final int LISTS_COUNT = 10;
+ private static final int HUMON_SIZE = Math.round(.9f * REGION_SIZE);
+ private static final long AVAILABLE_MEMORY
+ = Runtime.getRuntime().freeMemory();
+ private static final int HUMON_COUNT
+ = (int) ((AVAILABLE_MEMORY / HUMON_SIZE)
+ / LISTS_COUNT);
public static void main(String[] args) {
+ System.out.format("Running with %s max heap size. "
+ + "Will allocate humongous object of %s size %d times.%n",
+ MemoryUsagePrinter.humanReadableByteCount(AVAILABLE_MEMORY, false),
+ MemoryUsagePrinter.humanReadableByteCount(HUMON_SIZE, false),
+ HUMON_COUNT
+ );
new TestHumongousShrinkHeap().test();
}
@@ -54,8 +66,8 @@
System.gc();
MemoryUsagePrinter.printMemoryUsage("init");
- eat();
- MemoryUsagePrinter.printMemoryUsage("eaten");
+ allocate();
+ MemoryUsagePrinter.printMemoryUsage("allocated");
MemoryUsage muFull = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
free();
@@ -72,15 +84,12 @@
));
}
- private void eat() {
- int HumongousObjectSize = Math.round(.9f * PAGE_SIZE);
- System.out.println("Will allocate objects of size=" +
- MemoryUsagePrinter.humanReadableByteCount(HumongousObjectSize, true));
+ private void allocate() {
- for (int i = 0; i < PAGES_NUM; i++) {
- ArrayList<byte[]> stuff = new ArrayList<>();
- eatList(stuff, 100, HumongousObjectSize);
- MemoryUsagePrinter.printMemoryUsage("eat #" + i);
+ for (int i = 0; i < LISTS_COUNT; i++) {
+ List<byte[]> stuff = new ArrayList();
+ allocateList(stuff, HUMON_COUNT, HUMON_SIZE);
+ MemoryUsagePrinter.printMemoryUsage("allocate #" + (i+1));
garbage.add(stuff);
}
}
@@ -90,12 +99,12 @@
garbage.subList(0, garbage.size() - 1).clear();
// do not free last one element from last list
- ArrayList stuff = garbage.get(garbage.size() - 1);
+ List stuff = garbage.get(garbage.size() - 1);
stuff.subList(0, stuff.size() - 1).clear();
System.gc();
}
- private static void eatList(List garbage, int count, int size) {
+ private static void allocateList(List garbage, int count, int size) {
for (int i = 0; i < count; i++) {
garbage.add(new byte[size]);
}
@@ -122,9 +131,9 @@
float freeratio = 1f - (float) memusage.getUsed() / memusage.getCommitted();
System.out.format("[%-24s] init: %-7s, used: %-7s, comm: %-7s, freeRatio ~= %.1f%%%n",
label,
- humanReadableByteCount(memusage.getInit(), true),
- humanReadableByteCount(memusage.getUsed(), true),
- humanReadableByteCount(memusage.getCommitted(), true),
+ humanReadableByteCount(memusage.getInit(), false),
+ humanReadableByteCount(memusage.getUsed(), false),
+ humanReadableByteCount(memusage.getCommitted(), false),
freeratio * 100
);
}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/g1/TestShrinkDefragmentedHeap.java Thu Sep 25 16:21:54 2014 -0700
@@ -0,0 +1,188 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test TestShrinkDefragmentedHeap
+ * @bug 8038423
+ * @summary Verify that heap shrinks after GC in the presence of fragmentation due to humongous objects
+ * 1. allocate small objects mixed with humongous ones
+ * "ssssHssssHssssHssssHssssHssssHssssH"
+ * 2. release all allocated object except the last humongous one
+ * "..................................H"
+ * 3. invoke gc and check that memory returned to the system (amount of committed memory got down)
+ *
+ * @library /testlibrary
+ */
+import java.lang.management.ManagementFactory;
+import java.lang.management.MemoryUsage;
+import java.util.ArrayList;
+import java.util.List;
+import sun.management.ManagementFactoryHelper;
+import static com.oracle.java.testlibrary.Asserts.*;
+import com.oracle.java.testlibrary.ProcessTools;
+import com.oracle.java.testlibrary.OutputAnalyzer;
+
+public class TestShrinkDefragmentedHeap {
+ // Since we store all the small objects, they become old and old regions are also allocated at the bottom of the heap
+ // together with humongous regions. So if there are a lot of old regions in the lower part of the heap,
+ // the humongous regions will be allocated in the upper part of the heap anyway.
+ // To avoid this the Eden needs to be big enough to fit all the small objects.
+ private static final int INITIAL_HEAP_SIZE = 200 * 1024 * 1024;
+ private static final int MINIMAL_YOUNG_SIZE = 190 * 1024 * 1024;
+ private static final int REGION_SIZE = 1 * 1024 * 1024;
+
+ public static void main(String[] args) throws Exception, Throwable {
+ ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+ "-XX:InitialHeapSize=" + INITIAL_HEAP_SIZE,
+ "-Xmn" + MINIMAL_YOUNG_SIZE,
+ "-XX:MinHeapFreeRatio=10",
+ "-XX:MaxHeapFreeRatio=11",
+ "-XX:+UseG1GC",
+ "-XX:G1HeapRegionSize=" + REGION_SIZE,
+ "-verbose:gc",
+ GCTest.class.getName()
+ );
+
+ OutputAnalyzer output = ProcessTools.executeProcess(pb);
+ output.shouldHaveExitValue(0);
+ }
+
+ static class GCTest {
+
+ private static final String MIN_FREE_RATIO_FLAG_NAME = "MinHeapFreeRatio";
+ private static final String MAX_FREE_RATIO_FLAG_NAME = "MaxHeapFreeRatio";
+ private static final String NEW_SIZE_FLAG_NAME = "NewSize";
+
+ private static final ArrayList<ArrayList<byte[]>> garbage = new ArrayList<>();
+
+ private static final int SMALL_OBJS_SIZE = 10 * 1024; // 10kB
+ private static final int SMALL_OBJS_COUNT = MINIMAL_YOUNG_SIZE / (SMALL_OBJS_SIZE-1);
+ private static final int ALLOCATE_COUNT = 3;
+ // try to put all humongous object into gap between min young size and initial heap size
+ // to avoid implicit GCs
+ private static final int HUMONG_OBJS_SIZE = (int) Math.max(
+ (INITIAL_HEAP_SIZE - MINIMAL_YOUNG_SIZE) / ALLOCATE_COUNT / 4,
+ REGION_SIZE * 1.1
+ );
+
+ private static final long initialHeapSize = getHeapMemoryUsage().getUsed();
+
+ public static void main(String[] args) throws InterruptedException {
+ new GCTest().test();
+ }
+
+ private void test() throws InterruptedException {
+ MemoryUsagePrinter.printMemoryUsage("init");
+
+ allocate();
+ System.gc();
+ MemoryUsage muFull = getHeapMemoryUsage();
+ MemoryUsagePrinter.printMemoryUsage("allocated");
+
+ free();
+ //Thread.sleep(1000); // sleep before measures due lags in JMX
+ MemoryUsage muFree = getHeapMemoryUsage();
+ MemoryUsagePrinter.printMemoryUsage("free");
+
+ assertLessThan(muFree.getCommitted(), muFull.getCommitted(), prepareMessageCommittedIsNotLess() );
+ }
+
+ private void allocate() {
+ System.out.format("Will allocate objects of small size = %s and humongous size = %s",
+ MemoryUsagePrinter.humanReadableByteCount(SMALL_OBJS_SIZE, false),
+ MemoryUsagePrinter.humanReadableByteCount(HUMONG_OBJS_SIZE, false)
+ );
+
+ for (int i = 0; i < ALLOCATE_COUNT; i++) {
+ ArrayList<byte[]> stuff = new ArrayList<>();
+ allocateList(stuff, SMALL_OBJS_COUNT / ALLOCATE_COUNT, SMALL_OBJS_SIZE);
+ garbage.add(stuff);
+
+ ArrayList<byte[]> humongousStuff = new ArrayList<>();
+ allocateList(humongousStuff, 4, HUMONG_OBJS_SIZE);
+ garbage.add(humongousStuff);
+ }
+ }
+
+ private void free() {
+ // do not free last one list
+ garbage.subList(0, garbage.size() - 1).clear();
+
+ // do not free last one element from last list
+ ArrayList stuff = garbage.get(garbage.size() - 1);
+ if (stuff.size() > 1) {
+ stuff.subList(0, stuff.size() - 1).clear();
+ }
+ System.gc();
+ }
+
+ private String prepareMessageCommittedIsNotLess() {
+ return String.format(
+ "committed free heap size is not less than committed full heap size, heap hasn't been shrunk?%n"
+ + "%s = %s%n%s = %s",
+ MIN_FREE_RATIO_FLAG_NAME,
+ ManagementFactoryHelper.getDiagnosticMXBean().getVMOption(MIN_FREE_RATIO_FLAG_NAME).getValue(),
+ MAX_FREE_RATIO_FLAG_NAME,
+ ManagementFactoryHelper.getDiagnosticMXBean().getVMOption(MAX_FREE_RATIO_FLAG_NAME).getValue()
+ );
+ }
+
+ private static void allocateList(List garbage, int count, int size) {
+ for (int i = 0; i < count; i++) {
+ garbage.add(new byte[size]);
+ }
+ }
+ }
+
+ static MemoryUsage getHeapMemoryUsage() {
+ return ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
+ }
+
+ /**
+ * Prints memory usage to standard output
+ */
+ static class MemoryUsagePrinter {
+
+ public static String humanReadableByteCount(long bytes, boolean si) {
+ int unit = si ? 1000 : 1024;
+ if (bytes < unit) {
+ return bytes + " B";
+ }
+ int exp = (int) (Math.log(bytes) / Math.log(unit));
+ String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp - 1) + (si ? "" : "i");
+ return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre);
+ }
+
+ public static void printMemoryUsage(String label) {
+ MemoryUsage memusage = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
+ float freeratio = 1f - (float) memusage.getUsed() / memusage.getCommitted();
+ System.out.format("[%-24s] init: %-7s, used: %-7s, comm: %-7s, freeRatio ~= %.1f%%%n",
+ label,
+ humanReadableByteCount(memusage.getInit(), false),
+ humanReadableByteCount(memusage.getUsed(), false),
+ humanReadableByteCount(memusage.getCommitted(), false),
+ freeratio * 100
+ );
+ }
+ }
+}
--- a/hotspot/test/runtime/7158988/FieldMonitor.java Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/test/runtime/7158988/FieldMonitor.java Thu Sep 25 16:21:54 2014 -0700
@@ -26,7 +26,6 @@
* @bug 7158988
* @key regression
* @summary verify jvm does not crash while debugging
- * @ignore 8055145
* @run compile TestPostFieldModification.java
* @run main/othervm FieldMonitor
* @author axel.siebenborn@sap.com
@@ -91,35 +90,41 @@
boolean connected = true;
int watched = 0;
while (connected) {
- EventSet eventSet = eventQueue.remove();
- for (Event event : eventSet) {
- System.out.println("FieldMonitor-main receives: "+event);
- if (event instanceof VMStartEvent) {
- addClassWatch(vm);
- } else if (event instanceof VMDeathEvent
- || event instanceof VMDisconnectEvent) {
- // exit
- connected = false;
- } else if (event instanceof ClassPrepareEvent) {
- // watch field on loaded class
- System.out.println("ClassPrepareEvent");
- ClassPrepareEvent classPrepEvent = (ClassPrepareEvent) event;
- ReferenceType refType = classPrepEvent
- .referenceType();
- addFieldWatch(vm, refType);
- } else if (event instanceof ModificationWatchpointEvent) {
- watched++;
- System.out.println("sleep for 500 ms");
- Thread.sleep(500);
+ try {
+ EventSet eventSet = eventQueue.remove();
+ for (Event event : eventSet) {
+ System.out.println("FieldMonitor-main receives: "+event);
+ if (event instanceof VMStartEvent) {
+ addClassWatch(vm);
+ } else if (event instanceof VMDeathEvent
+ || event instanceof VMDisconnectEvent) {
+ // exit
+ connected = false;
+ } else if (event instanceof ClassPrepareEvent) {
+ // watch field on loaded class
+ System.out.println("ClassPrepareEvent");
+ ClassPrepareEvent classPrepEvent = (ClassPrepareEvent) event;
+ ReferenceType refType = classPrepEvent
+ .referenceType();
+ addFieldWatch(vm, refType);
+ } else if (event instanceof ModificationWatchpointEvent) {
+ watched++;
+ System.out.println("sleep for 500 ms");
+ Thread.sleep(500);
- ModificationWatchpointEvent modEvent = (ModificationWatchpointEvent) event;
- System.out.println("old="
- + modEvent.valueCurrent());
- System.out.println("new=" + modEvent.valueToBe());
+ ModificationWatchpointEvent modEvent = (ModificationWatchpointEvent) event;
+ System.out.println("old="
+ + modEvent.valueCurrent());
+ System.out.println("new=" + modEvent.valueToBe());
+ }
+ }
+ System.out.println("resume...");
+ eventSet.resume();
+ } catch (com.sun.jdi.VMDisconnectedException exc) {
+ // Guess this means it's not connected anymore,
+ // sometimes this happens and everything else hangs, just return.
+ return;
}
- }
- System.out.println("resume...");
- eventSet.resume();
}
// Shutdown begins when event thread terminates
try {
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/CompressedOops/CompressedClassSpaceSize.java Thu Sep 25 16:21:54 2014 -0700
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8022865
+ * @summary Tests for the -XX:CompressedClassSpaceSize command line option
+ * @library /testlibrary
+ * @run main CompressedClassSpaceSize
+ */
+import com.oracle.java.testlibrary.*;
+
+public class CompressedClassSpaceSize {
+
+ public static void main(String[] args) throws Exception {
+ ProcessBuilder pb;
+ OutputAnalyzer output;
+ if (Platform.is64bit()) {
+ // Minimum size is 1MB
+ pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=0",
+ "-version");
+ output = new OutputAnalyzer(pb.start());
+ output.shouldContain("CompressedClassSpaceSize of 0 is invalid")
+ .shouldHaveExitValue(1);
+
+ // Invalid size of -1 should be handled correctly
+ pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=-1",
+ "-version");
+ output = new OutputAnalyzer(pb.start());
+ output.shouldContain("Improperly specified VM option 'CompressedClassSpaceSize=-1'")
+ .shouldHaveExitValue(1);
+
+
+ // Maximum size is 3GB
+ pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=4g",
+ "-version");
+ output = new OutputAnalyzer(pb.start());
+ output.shouldContain("CompressedClassSpaceSize of 4294967296 is invalid")
+ .shouldHaveExitValue(1);
+
+
+ // Make sure the minimum size is set correctly and printed
+ pb = ProcessTools.createJavaProcessBuilder("-XX:+UnlockDiagnosticVMOptions",
+ "-XX:CompressedClassSpaceSize=1m",
+ "-XX:+PrintCompressedOopsMode",
+ "-version");
+ output = new OutputAnalyzer(pb.start());
+ output.shouldContain("Compressed class space size: 1048576")
+ .shouldHaveExitValue(0);
+
+
+ // Make sure the maximum size is set correctly and printed
+ pb = ProcessTools.createJavaProcessBuilder("-XX:+UnlockDiagnosticVMOptions",
+ "-XX:CompressedClassSpaceSize=3g",
+ "-XX:+PrintCompressedOopsMode",
+ "-version");
+ output = new OutputAnalyzer(pb.start());
+ output.shouldContain("Compressed class space size: 3221225472")
+ .shouldHaveExitValue(0);
+
+
+ pb = ProcessTools.createJavaProcessBuilder("-XX:-UseCompressedOops",
+ "-XX:CompressedClassSpaceSize=1m",
+ "-version");
+ output = new OutputAnalyzer(pb.start());
+ output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used")
+ .shouldHaveExitValue(0);
+
+
+ pb = ProcessTools.createJavaProcessBuilder("-XX:-UseCompressedClassPointers",
+ "-XX:CompressedClassSpaceSize=1m",
+ "-version");
+ output = new OutputAnalyzer(pb.start());
+ output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used")
+ .shouldHaveExitValue(0);
+ } else {
+ // 32bit platforms doesn't have compressed oops
+ pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=1m",
+ "-version");
+ output = new OutputAnalyzer(pb.start());
+ output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used")
+ .shouldHaveExitValue(0);
+ }
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/CompressedOops/ObjectAlignment.java Thu Sep 25 16:21:54 2014 -0700
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8022865
+ * @summary Tests for the -XX:ObjectAlignmentInBytes command line option
+ * @library /testlibrary
+ * @run main ObjectAlignment
+ */
+import com.oracle.java.testlibrary.*;
+
+public class ObjectAlignment {
+
+ public static void main(String[] args) throws Exception {
+
+ if (Platform.is64bit()) {
+ // Minimum alignment should be 8
+ testObjectAlignment(4)
+ .shouldContain("error: ObjectAlignmentInBytes=4 must be greater or equal 8")
+ .shouldHaveExitValue(1);
+
+ // Alignment has to be a power of 2
+ testObjectAlignment(9)
+ .shouldContain("error: ObjectAlignmentInBytes=9 must be power of 2")
+ .shouldHaveExitValue(1);
+
+ testObjectAlignment(-1)
+ .shouldContain("error: ObjectAlignmentInBytes=-1 must be power of 2")
+ .shouldHaveExitValue(1);
+
+ // Maximum alignment allowed is 256
+ testObjectAlignment(512)
+ .shouldContain("error: ObjectAlignmentInBytes=512 must not be greater than 256")
+ .shouldHaveExitValue(1);
+
+ // Valid alignments should work
+ testObjectAlignment(8).shouldHaveExitValue(0);
+ testObjectAlignment(16).shouldHaveExitValue(0);
+ testObjectAlignment(256).shouldHaveExitValue(0);
+
+ } else {
+ // For a 32bit JVM the option isn't there, make sure it's not silently ignored
+ testObjectAlignment(8)
+ .shouldContain("Unrecognized VM option 'ObjectAlignmentInBytes=8'")
+ .shouldHaveExitValue(1);
+ }
+ }
+
+ private static OutputAnalyzer testObjectAlignment(int alignment) throws Exception {
+ ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:ObjectAlignmentInBytes=" + alignment,
+ "-version");
+ return new OutputAnalyzer(pb.start());
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/CompressedOops/UseCompressedOops.java Thu Sep 25 16:21:54 2014 -0700
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8022865
+ * @summary Tests for different combination of UseCompressedOops options
+ * @library /testlibrary
+ * @run main UseCompressedOops
+ */
+import java.util.ArrayList;
+import java.util.Collections;
+import com.oracle.java.testlibrary.*;
+
+public class UseCompressedOops {
+
+ public static void main(String[] args) throws Exception {
+
+ if (Platform.is64bit()) {
+ // Explicitly turn of compressed oops
+ testCompressedOops("-XX:-UseCompressedOops", "-Xmx32m")
+ .shouldNotContain("Compressed Oops")
+ .shouldHaveExitValue(0);
+
+ // Compressed oops should be on by default
+ testCompressedOops("-Xmx32m")
+ .shouldContain("Compressed Oops mode")
+ .shouldHaveExitValue(0);
+
+ // Explicly enabling compressed oops
+ testCompressedOops("-XX:+UseCompressedOops", "-Xmx32m")
+ .shouldContain("Compressed Oops mode")
+ .shouldHaveExitValue(0);
+
+ // Larger than 4gb heap should result in zero based with shift 3
+ testCompressedOops("-XX:+UseCompressedOops", "-Xmx5g")
+ .shouldContain("Zero based")
+ .shouldContain("Oop shift amount: 3")
+ .shouldHaveExitValue(0);
+
+ // Skip the following three test cases if we're on OSX or Solaris Sparc.
+ //
+ // OSX doesn't seem to care about HeapBaseMinAddress and Solaris Sparc
+ // puts the heap way up, forcing different behaviour.
+
+ if (!Platform.isOSX() && !(Platform.isSolaris() && Platform.isSparc())) {
+ // Small heap above 4gb should result in zero based with shift 3
+ testCompressedOops("-XX:+UseCompressedOops", "-Xmx32m", "-XX:HeapBaseMinAddress=4g")
+ .shouldContain("Zero based")
+ .shouldContain("Oop shift amount: 3")
+ .shouldHaveExitValue(0);
+
+ // Small heap above 32gb should result in non-zero based with shift 3
+ testCompressedOops("-XX:+UseCompressedOops", "-Xmx32m", "-XX:HeapBaseMinAddress=32g")
+ .shouldContain("Non-zero based")
+ .shouldContain("Oop shift amount: 3")
+ .shouldHaveExitValue(0);
+
+ // 32gb heap with heap base above 64gb and object alignment set to 16 bytes should result
+ // in non-zero based with shift 4
+ testCompressedOops("-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=16",
+ "-XX:HeapBaseMinAddress=64g")
+ .shouldContain("Non-zero based")
+ .shouldContain("Oop shift amount: 4")
+ .shouldHaveExitValue(0);
+ }
+
+ // Explicitly enabling compressed oops with 32gb heap should result a warning
+ testCompressedOops("-XX:+UseCompressedOops", "-Xmx32g")
+ .shouldContain("Max heap size too large for Compressed Oops")
+ .shouldHaveExitValue(0);
+
+ // 32gb heap should not result a warning
+ testCompressedOops("-Xmx32g")
+ .shouldNotContain("Max heap size too large for Compressed Oops")
+ .shouldHaveExitValue(0);
+
+ // Explicitly enabling compressed oops with 32gb heap and object
+ // alignment set to 8 byte should result a warning
+ testCompressedOops("-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=8")
+ .shouldContain("Max heap size too large for Compressed Oops")
+ .shouldHaveExitValue(0);
+
+ // 64gb heap and object alignment set to 16 bytes should result in a warning
+ testCompressedOops("-XX:+UseCompressedOops", "-Xmx64g", "-XX:ObjectAlignmentInBytes=16")
+ .shouldContain("Max heap size too large for Compressed Oops")
+ .shouldHaveExitValue(0);
+
+ // 32gb heap with object alignment set to 16 bytes should result in zero based with shift 4
+ testCompressedOops("-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=16")
+ .shouldContain("Zero based")
+ .shouldContain("Oop shift amount: 4")
+ .shouldHaveExitValue(0);
+
+ } else {
+ // Compressed oops should only apply to 64bit platforms
+ testCompressedOops("-XX:+UseCompressedOops", "-Xmx32m")
+ .shouldContain("Unrecognized VM option 'UseCompressedOops'")
+ .shouldHaveExitValue(1);
+ }
+ }
+
+ private static OutputAnalyzer testCompressedOops(String... flags) throws Exception {
+ ArrayList<String> args = new ArrayList<>();
+
+ // Always run with these three:
+ args.add("-XX:+UnlockDiagnosticVMOptions");
+ args.add("-XX:+PrintCompressedOopsMode");
+ args.add("-Xms32m");
+
+ // Add the extra flags
+ Collections.addAll(args, flags);
+
+ args.add("-version");
+
+ ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args.toArray(new String[0]));
+ return new OutputAnalyzer(pb.start());
+ }
+}
--- a/hotspot/test/runtime/NMT/MallocTrackingVerify.java Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/test/runtime/NMT/MallocTrackingVerify.java Thu Sep 25 16:21:54 2014 -0700
@@ -27,6 +27,7 @@
* @summary Test to verify correctness of malloc tracking
* @key nmt jcmd
* @library /testlibrary /testlibrary/whitebox
+ * @ignore 8058251
* @build MallocTrackingVerify
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocTrackingVerify
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/memory/LargePages/TestLargePageSizeInBytes.java Thu Sep 25 16:21:54 2014 -0700
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/* @test TestLargePageSizeInBytes
+ * @summary Tests that the flag -XX:LargePageSizeInBytes does not cause warnings on Solaris
+ * @bug 8049536
+ * @library /testlibrary
+ * @run driver TestLargePageSizeInBytes
+ */
+
+import com.oracle.java.testlibrary.OutputAnalyzer;
+import com.oracle.java.testlibrary.Platform;
+import com.oracle.java.testlibrary.ProcessTools;
+
+public class TestLargePageSizeInBytes {
+ private static long M = 1024L * 1024L;
+ private static long G = 1024L * M;
+
+ public static void main(String[] args) throws Exception {
+ if (!Platform.isSolaris()) {
+ // We only use the syscall mencntl on Solaris
+ return;
+ }
+
+ testLargePageSizeInBytes(4 * M);
+ testLargePageSizeInBytes(256 * M);
+ testLargePageSizeInBytes(512 * M);
+ testLargePageSizeInBytes(2 * G);
+ }
+
+ private static void testLargePageSizeInBytes(long size) throws Exception {
+ ProcessBuilder pb =
+ ProcessTools.createJavaProcessBuilder("-XX:+UseLargePages",
+ "-XX:LargePageSizeInBytes=" + size,
+ "-version");
+
+ OutputAnalyzer out = new OutputAnalyzer(pb.start());
+ out.shouldNotContain("Attempt to use MPSS failed.");
+ out.shouldHaveExitValue(0);
+ }
+}
--- a/hotspot/test/testlibrary/com/oracle/java/testlibrary/OutputAnalyzer.java Thu Sep 25 12:40:17 2014 -0700
+++ b/hotspot/test/testlibrary/com/oracle/java/testlibrary/OutputAnalyzer.java Thu Sep 25 16:21:54 2014 -0700
@@ -74,11 +74,12 @@
* @param expectedString String that buffer should contain
* @throws RuntimeException If the string was not found
*/
- public void shouldContain(String expectedString) {
+ public OutputAnalyzer shouldContain(String expectedString) {
if (!stdout.contains(expectedString) && !stderr.contains(expectedString)) {
reportDiagnosticSummary();
throw new RuntimeException("'" + expectedString + "' missing from stdout/stderr \n");
}
+ return this;
}
/**
@@ -87,11 +88,12 @@
* @param expectedString String that buffer should contain
* @throws RuntimeException If the string was not found
*/
- public void stdoutShouldContain(String expectedString) {
+ public OutputAnalyzer stdoutShouldContain(String expectedString) {
if (!stdout.contains(expectedString)) {
reportDiagnosticSummary();
throw new RuntimeException("'" + expectedString + "' missing from stdout \n");
}
+ return this;
}
/**
@@ -100,11 +102,12 @@
* @param expectedString String that buffer should contain
* @throws RuntimeException If the string was not found
*/
- public void stderrShouldContain(String expectedString) {
+ public OutputAnalyzer stderrShouldContain(String expectedString) {
if (!stderr.contains(expectedString)) {
reportDiagnosticSummary();
throw new RuntimeException("'" + expectedString + "' missing from stderr \n");
}
+ return this;
}
/**
@@ -113,7 +116,7 @@
* @param expectedString String that the buffer should not contain
* @throws RuntimeException If the string was found
*/
- public void shouldNotContain(String notExpectedString) {
+ public OutputAnalyzer shouldNotContain(String notExpectedString) {
if (stdout.contains(notExpectedString)) {
reportDiagnosticSummary();
throw new RuntimeException("'" + notExpectedString + "' found in stdout \n");
@@ -122,6 +125,7 @@
reportDiagnosticSummary();
throw new RuntimeException("'" + notExpectedString + "' found in stderr \n");
}
+ return this;
}
/**
@@ -130,11 +134,12 @@
* @param expectedString String that the buffer should not contain
* @throws RuntimeException If the string was found
*/
- public void stdoutShouldNotContain(String notExpectedString) {
+ public OutputAnalyzer stdoutShouldNotContain(String notExpectedString) {
if (stdout.contains(notExpectedString)) {
reportDiagnosticSummary();
throw new RuntimeException("'" + notExpectedString + "' found in stdout \n");
}
+ return this;
}
/**
@@ -143,11 +148,12 @@
* @param expectedString String that the buffer should not contain
* @throws RuntimeException If the string was found
*/
- public void stderrShouldNotContain(String notExpectedString) {
+ public OutputAnalyzer stderrShouldNotContain(String notExpectedString) {
if (stderr.contains(notExpectedString)) {
reportDiagnosticSummary();
throw new RuntimeException("'" + notExpectedString + "' found in stderr \n");
}
+ return this;
}
/**
@@ -157,7 +163,7 @@
* @param pattern
* @throws RuntimeException If the pattern was not found
*/
- public void shouldMatch(String pattern) {
+ public OutputAnalyzer shouldMatch(String pattern) {
Matcher stdoutMatcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(stdout);
Matcher stderrMatcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(stderr);
if (!stdoutMatcher.find() && !stderrMatcher.find()) {
@@ -165,6 +171,7 @@
throw new RuntimeException("'" + pattern
+ "' missing from stdout/stderr \n");
}
+ return this;
}
/**
@@ -174,13 +181,14 @@
* @param pattern
* @throws RuntimeException If the pattern was not found
*/
- public void stdoutShouldMatch(String pattern) {
+ public OutputAnalyzer stdoutShouldMatch(String pattern) {
Matcher matcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(stdout);
if (!matcher.find()) {
reportDiagnosticSummary();
throw new RuntimeException("'" + pattern
+ "' missing from stdout \n");
}
+ return this;
}
/**
@@ -190,13 +198,14 @@
* @param pattern
* @throws RuntimeException If the pattern was not found
*/
- public void stderrShouldMatch(String pattern) {
+ public OutputAnalyzer stderrShouldMatch(String pattern) {
Matcher matcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(stderr);
if (!matcher.find()) {
reportDiagnosticSummary();
throw new RuntimeException("'" + pattern
+ "' missing from stderr \n");
}
+ return this;
}
/**
@@ -206,7 +215,7 @@
* @param pattern
* @throws RuntimeException If the pattern was found
*/
- public void shouldNotMatch(String pattern) {
+ public OutputAnalyzer shouldNotMatch(String pattern) {
Matcher matcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(stdout);
if (matcher.find()) {
reportDiagnosticSummary();
@@ -219,6 +228,7 @@
throw new RuntimeException("'" + pattern
+ "' found in stderr: '" + matcher.group() + "' \n");
}
+ return this;
}
/**
@@ -228,13 +238,14 @@
* @param pattern
* @throws RuntimeException If the pattern was found
*/
- public void stdoutShouldNotMatch(String pattern) {
+ public OutputAnalyzer stdoutShouldNotMatch(String pattern) {
Matcher matcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(stdout);
if (matcher.find()) {
reportDiagnosticSummary();
throw new RuntimeException("'" + pattern
+ "' found in stdout \n");
}
+ return this;
}
/**
@@ -244,13 +255,14 @@
* @param pattern
* @throws RuntimeException If the pattern was found
*/
- public void stderrShouldNotMatch(String pattern) {
+ public OutputAnalyzer stderrShouldNotMatch(String pattern) {
Matcher matcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(stderr);
if (matcher.find()) {
reportDiagnosticSummary();
throw new RuntimeException("'" + pattern
+ "' found in stderr \n");
}
+ return this;
}
/**
@@ -290,12 +302,13 @@
* @param expectedExitValue Expected exit value from process
* @throws RuntimeException If the exit value from the process did not match the expected value
*/
- public void shouldHaveExitValue(int expectedExitValue) {
+ public OutputAnalyzer shouldHaveExitValue(int expectedExitValue) {
if (getExitValue() != expectedExitValue) {
reportDiagnosticSummary();
throw new RuntimeException("Expected to get exit value of ["
+ expectedExitValue + "]\n");
}
+ return this;
}