--- a/.hgtags-top-repo Thu Jan 26 18:23:14 2012 -0800
+++ b/.hgtags-top-repo Wed Jul 05 18:01:11 2017 +0200
@@ -144,3 +144,4 @@
5a5eaf6374bcbe23530899579fed17a05b7705f3 jdk8-b20
cc771d92284f71765eca14d6d08703c4af254c04 jdk8-b21
7ad075c809952e355d25030605da6af30456ed74 jdk8-b22
+60d6f64a86b1e511169d264727f6d51415978df0 jdk8-b23
--- a/hotspot/.hgtags Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/.hgtags Wed Jul 05 18:01:11 2017 +0200
@@ -213,3 +213,5 @@
513351373923f74a7c91755748b95c9771e59f96 hs23-b10
24727fb37561779077fdfa5a33342246f20e5c0f jdk8-b22
dcc292399a39113957eebbd3e487b7e05e2c79fc hs23-b11
+e850d8e7ea54b91c7aa656e297f0f9f38dd4c296 jdk8-b23
+9e177d44b10fe92ecffa965fef9c5ac5433c1b46 hs23-b12
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/gc_implementation/g1/G1CollectedHeap.java Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/gc_implementation/g1/G1CollectedHeap.java Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2012, 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
@@ -49,8 +49,12 @@
static private long g1CommittedFieldOffset;
// size_t _summary_bytes_used;
static private CIntegerField summaryBytesUsedField;
- // G1MonitoringSupport* _g1mm
+ // G1MonitoringSupport* _g1mm;
static private AddressField g1mmField;
+ // MasterOldRegionSet _old_set;
+ static private long oldSetFieldOffset;
+ // MasterHumongousRegionSet _humongous_set;
+ static private long humongousSetFieldOffset;
static {
VM.registerVMInitializedObserver(new Observer() {
@@ -67,12 +71,14 @@
g1CommittedFieldOffset = type.getField("_g1_committed").getOffset();
summaryBytesUsedField = type.getCIntegerField("_summary_bytes_used");
g1mmField = type.getAddressField("_g1mm");
+ oldSetFieldOffset = type.getField("_old_set").getOffset();
+ humongousSetFieldOffset = type.getField("_humongous_set").getOffset();
}
public long capacity() {
Address g1CommittedAddr = addr.addOffsetTo(g1CommittedFieldOffset);
- MemRegion g1_committed = new MemRegion(g1CommittedAddr);
- return g1_committed.byteSize();
+ MemRegion g1Committed = new MemRegion(g1CommittedAddr);
+ return g1Committed.byteSize();
}
public long used() {
@@ -94,6 +100,18 @@
return (G1MonitoringSupport) VMObjectFactory.newObject(G1MonitoringSupport.class, g1mmAddr);
}
+ public HeapRegionSetBase oldSet() {
+ Address oldSetAddr = addr.addOffsetTo(oldSetFieldOffset);
+ return (HeapRegionSetBase) VMObjectFactory.newObject(HeapRegionSetBase.class,
+ oldSetAddr);
+ }
+
+ public HeapRegionSetBase humongousSet() {
+ Address humongousSetAddr = addr.addOffsetTo(humongousSetFieldOffset);
+ return (HeapRegionSetBase) VMObjectFactory.newObject(HeapRegionSetBase.class,
+ humongousSetAddr);
+ }
+
private Iterator<HeapRegion> heapRegionIterator() {
return hrs().heapRegionIterator();
}
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/gc_implementation/g1/G1MonitoringSupport.java Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/gc_implementation/g1/G1MonitoringSupport.java Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2012, 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
@@ -77,6 +77,10 @@
return edenUsedField.getValue(addr);
}
+ public long edenRegionNum() {
+ return edenUsed() / HeapRegion.grainBytes();
+ }
+
public long survivorCommitted() {
return survivorCommittedField.getValue(addr);
}
@@ -85,6 +89,10 @@
return survivorUsedField.getValue(addr);
}
+ public long survivorRegionNum() {
+ return survivorUsed() / HeapRegion.grainBytes();
+ }
+
public long oldCommitted() {
return oldCommittedField.getValue(addr);
}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/gc_implementation/g1/HeapRegionSetBase.java Wed Jul 05 18:01:11 2017 +0200
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2012, 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.
+ *
+ */
+
+package sun.jvm.hotspot.gc_implementation.g1;
+
+import java.util.Iterator;
+import java.util.Observable;
+import java.util.Observer;
+
+import sun.jvm.hotspot.debugger.Address;
+import sun.jvm.hotspot.runtime.VM;
+import sun.jvm.hotspot.runtime.VMObject;
+import sun.jvm.hotspot.runtime.VMObjectFactory;
+import sun.jvm.hotspot.types.AddressField;
+import sun.jvm.hotspot.types.CIntegerField;
+import sun.jvm.hotspot.types.Type;
+import sun.jvm.hotspot.types.TypeDataBase;
+
+// Mirror class for HeapRegionSetBase. Represents a group of regions.
+
+public class HeapRegionSetBase extends VMObject {
+ // size_t _length;
+ static private CIntegerField lengthField;
+ // size_t _region_num;
+ static private CIntegerField regionNumField;
+ // size_t _total_used_bytes;
+ static private CIntegerField totalUsedBytesField;
+
+ static {
+ VM.registerVMInitializedObserver(new Observer() {
+ public void update(Observable o, Object data) {
+ initialize(VM.getVM().getTypeDataBase());
+ }
+ });
+ }
+
+ static private synchronized void initialize(TypeDataBase db) {
+ Type type = db.lookupType("HeapRegionSetBase");
+
+ lengthField = type.getCIntegerField("_length");
+ regionNumField = type.getCIntegerField("_region_num");
+ totalUsedBytesField = type.getCIntegerField("_total_used_bytes");
+ }
+
+ public long length() {
+ return lengthField.getValue(addr);
+ }
+
+ public long regionNum() {
+ return regionNumField.getValue(addr);
+ }
+
+ public long totalUsedBytes() {
+ return totalUsedBytesField.getValue(addr);
+ }
+
+ public HeapRegionSetBase(Address addr) {
+ super(addr);
+ }
+}
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/tools/HeapSummary.java Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/tools/HeapSummary.java Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2012, 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
@@ -67,6 +67,7 @@
printValue("SurvivorRatio = ", getFlagValue("SurvivorRatio", flagMap));
printValMB("PermSize = ", getFlagValue("PermSize", flagMap));
printValMB("MaxPermSize = ", getFlagValue("MaxPermSize", flagMap));
+ printValMB("G1HeapRegionSize = ", HeapRegion.grainBytes());
System.out.println();
System.out.println("Heap Usage:");
@@ -100,11 +101,20 @@
} else if (sharedHeap instanceof G1CollectedHeap) {
G1CollectedHeap g1h = (G1CollectedHeap) sharedHeap;
G1MonitoringSupport g1mm = g1h.g1mm();
- System.out.println("G1 Young Generation");
- printG1Space("Eden Space:", g1mm.edenUsed(), g1mm.edenCommitted());
- printG1Space("From Space:", g1mm.survivorUsed(), g1mm.survivorCommitted());
- printG1Space("To Space:", 0, 0);
- printG1Space("G1 Old Generation", g1mm.oldUsed(), g1mm.oldCommitted());
+ long edenRegionNum = g1mm.edenRegionNum();
+ long survivorRegionNum = g1mm.survivorRegionNum();
+ HeapRegionSetBase oldSet = g1h.oldSet();
+ HeapRegionSetBase humongousSet = g1h.humongousSet();
+ long oldRegionNum = oldSet.regionNum() + humongousSet.regionNum();
+ printG1Space("G1 Heap:", g1h.n_regions(),
+ g1h.used(), g1h.capacity());
+ System.out.println("G1 Young Generation:");
+ printG1Space("Eden Space:", edenRegionNum,
+ g1mm.edenUsed(), g1mm.edenCommitted());
+ printG1Space("Survivor Space:", survivorRegionNum,
+ g1mm.survivorUsed(), g1mm.survivorCommitted());
+ printG1Space("G1 Old Generation:", oldRegionNum,
+ g1mm.oldUsed(), g1mm.oldCommitted());
} else {
throw new RuntimeException("unknown SharedHeap type : " + heap.getClass());
}
@@ -216,9 +226,11 @@
System.out.println(alignment + (double)space.used() * 100.0 / space.capacity() + "% used");
}
- private void printG1Space(String spaceName, long used, long capacity) {
+ private void printG1Space(String spaceName, long regionNum,
+ long used, long capacity) {
long free = capacity - used;
System.out.println(spaceName);
+ printValue("regions = ", regionNum);
printValMB("capacity = ", capacity);
printValMB("used = ", used);
printValMB("free = ", free);
--- a/hotspot/make/bsd/Makefile Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/make/bsd/Makefile Wed Jul 05 18:01:11 2017 +0200
@@ -208,7 +208,7 @@
TARGETS_SHARK = $(addsuffix shark,$(TARGETS))
BUILDTREE_MAKE = $(GAMMADIR)/make/$(OSNAME)/makefiles/buildtree.make
-BUILDTREE_VARS = GAMMADIR=$(GAMMADIR) OS_FAMILY=$(OSNAME) SRCARCH=$(SRCARCH) BUILDARCH=$(BUILDARCH) LIBARCH=$(LIBARCH)
+BUILDTREE_VARS = GAMMADIR=$(GAMMADIR) OS_FAMILY=$(OSNAME) SRCARCH=$(SRCARCH) BUILDARCH=$(BUILDARCH) LIBARCH=$(LIBARCH) LIBRARY_SUFFIX=$(LIBRARY_SUFFIX)
BUILDTREE_VARS += HOTSPOT_RELEASE_VERSION=$(HOTSPOT_RELEASE_VERSION) HOTSPOT_BUILD_VERSION=$(HOTSPOT_BUILD_VERSION) JRE_RELEASE_VERSION=$(JRE_RELEASE_VERSION)
BUILDTREE = $(MAKE) -f $(BUILDTREE_MAKE) $(BUILDTREE_VARS)
--- a/hotspot/make/bsd/makefiles/buildtree.make Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/make/bsd/makefiles/buildtree.make Wed Jul 05 18:01:11 2017 +0200
@@ -162,20 +162,6 @@
endif
endif
-ifeq ($(OS_VENDOR), Darwin)
- # MACOSX FIXME: we should be able to run test_gamma (see MACOSX_PORT-214)
- ifeq ($(ALWAYS_PASS_TEST_GAMMA),)
- # ALWAYS_PASS_TEST_GAMMA wasn't set so we default to true on MacOS X
- # until MACOSX_PORT-214 is fixed
- ALWAYS_PASS_TEST_GAMMA=true
- endif
-endif
-ifeq ($(ALWAYS_PASS_TEST_GAMMA), true)
- TEST_GAMMA_STATUS= echo 'exit 0';
-else
- TEST_GAMMA_STATUS=
-endif
-
BUILDTREE_VARS += HOTSPOT_RELEASE_VERSION=$(HS_BUILD_VER) HOTSPOT_BUILD_VERSION= JRE_RELEASE_VERSION=$(JRE_RELEASE_VERSION)
BUILDTREE = \
@@ -353,12 +339,10 @@
$(BUILDTREE_COMMENT); \
[ -n "$$JAVA_HOME" ] && { echo ": \$${JAVA_HOME:=$${JAVA_HOME}}"; }; \
{ \
- echo "LD_LIBRARY_PATH=.:$${LD_LIBRARY_PATH:+$$LD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
- echo "DYLD_LIBRARY_PATH=.:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
echo "CLASSPATH=$${CLASSPATH:+$$CLASSPATH:}.:\$${JAVA_HOME}/jre/lib/rt.jar:\$${JAVA_HOME}/jre/lib/i18n.jar"; \
} | sed s:$${JAVA_HOME:--------}:\$${JAVA_HOME}:g; \
echo "HOTSPOT_BUILD_USER=\"$${LOGNAME:-$$USER} in `basename $(GAMMADIR)`\""; \
- echo "export JAVA_HOME LD_LIBRARY_PATH DYLD_LIBRARY_PATH CLASSPATH HOTSPOT_BUILD_USER"; \
+ echo "export JAVA_HOME CLASSPATH HOTSPOT_BUILD_USER"; \
) > $@
env.csh: env.sh
@@ -412,7 +396,7 @@
JAVA_FLAG/64 = -d64
WRONG_DATA_MODE_MSG = \
- echo "JAVA_HOME must point to $(DATA_MODE)bit JDK."
+ echo "JAVA_HOME must point to a $(DATA_MODE)-bit OpenJDK."
CROSS_COMPILING_MSG = \
echo "Cross compiling for ARCH $(CROSS_COMPILE_ARCH), skipping gamma run."
@@ -420,20 +404,78 @@
test_gamma: $(BUILDTREE_MAKE) $(GAMMADIR)/make/test/Queens.java
@echo Creating $@ ...
$(QUIETLY) ( \
- echo '#!/bin/sh'; \
+ echo "#!/bin/sh"; \
+ echo ""; \
$(BUILDTREE_COMMENT); \
- echo '. ./env.sh'; \
- echo "if [ \"$(CROSS_COMPILE_ARCH)\" != \"\" ]; then { $(CROSS_COMPILING_MSG); exit 0; }; fi"; \
- echo "if [ -z \$$JAVA_HOME ]; then { $(NO_JAVA_HOME_MSG); exit 0; }; fi"; \
- echo "if ! \$${JAVA_HOME}/bin/java $(JAVA_FLAG) -fullversion 2>&1 > /dev/null"; \
- echo "then"; \
- echo " $(WRONG_DATA_MODE_MSG); exit 0;"; \
+ echo ""; \
+ echo "# Include environment settings for gamma run"; \
+ echo ""; \
+ echo ". ./env.sh"; \
+ echo ""; \
+ echo "# Do not run gamma test for cross compiles"; \
+ echo ""; \
+ echo "if [ -n \"$(CROSS_COMPILE_ARCH)\" ]; then "; \
+ echo " $(CROSS_COMPILING_MSG)"; \
+ echo " exit 0"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Make sure JAVA_HOME is set as it is required for gamma"; \
+ echo ""; \
+ echo "if [ -z \"\$${JAVA_HOME}\" ]; then "; \
+ echo " $(NO_JAVA_HOME_MSG)"; \
+ echo " exit 0"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Check JAVA_HOME version to be used for the test"; \
+ echo ""; \
+ echo "\$${JAVA_HOME}/bin/java $(JAVA_FLAG) -fullversion > /dev/null 2>&1"; \
+ echo "if [ \$$? -ne 0 ]; then "; \
+ echo " $(WRONG_DATA_MODE_MSG)"; \
+ echo " exit 0"; \
echo "fi"; \
+ echo ""; \
+ echo "# Use gamma_g if it exists"; \
+ echo ""; \
+ echo "GAMMA_PROG=gamma"; \
+ echo "if [ -f gamma_g ]; then "; \
+ echo " GAMMA_PROG=gamma_g"; \
+ echo "fi"; \
+ echo ""; \
+ echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
+ echo " # Ensure architecture for gamma and JAVA_HOME is the same."; \
+ echo " # NOTE: gamma assumes the OpenJDK directory layout."; \
+ echo ""; \
+ echo " GAMMA_ARCH=\"\`file \$${GAMMA_PROG} | awk '{print \$$NF}'\`\""; \
+ echo " JVM_LIB=\"\$${JAVA_HOME}/jre/lib/libjava.$(LIBRARY_SUFFIX)\""; \
+ echo " if [ ! -f \$${JVM_LIB} ]; then"; \
+ echo " JVM_LIB=\"\$${JAVA_HOME}/jre/lib/$${LIBARCH}/libjava.$(LIBRARY_SUFFIX)\""; \
+ echo " fi"; \
+ echo " if [ ! -f \$${JVM_LIB} ] || [ -z \"\`file \$${JVM_LIB} | grep \$${GAMMA_ARCH}\`\" ]; then "; \
+ echo " $(WRONG_DATA_MODE_MSG)"; \
+ echo " exit 0"; \
+ echo " fi"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Compile Queens program for test"; \
+ echo ""; \
echo "rm -f Queens.class"; \
echo "\$${JAVA_HOME}/bin/javac -d . $(GAMMADIR)/make/test/Queens.java"; \
- echo '[ -f gamma_g ] && { gamma=gamma_g; }'; \
- echo './$${gamma:-gamma} $(TESTFLAGS) Queens < /dev/null'; \
- $(TEST_GAMMA_STATUS) \
+ echo ""; \
+ echo "# Set library path solely for gamma launcher test run"; \
+ echo ""; \
+ echo "LD_LIBRARY_PATH=.:$${LD_LIBRARY_PATH:+$$LD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
+ echo "export LD_LIBRARY_PATH"; \
+ echo "unset LD_LIBRARY_PATH_32"; \
+ echo "unset LD_LIBRARY_PATH_64"; \
+ echo ""; \
+ echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
+ echo " DYLD_LIBRARY_PATH=.:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/native_threads:\$${JAVA_HOME}/jre/lib:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
+ echo " export DYLD_LIBRARY_PATH"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Use the gamma launcher and JAVA_HOME to run the test"; \
+ echo ""; \
+ echo "./\$${GAMMA_PROG} $(TESTFLAGS) Queens < /dev/null"; \
) > $@
$(QUIETLY) chmod +x $@
--- a/hotspot/make/bsd/makefiles/defs.make Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/make/bsd/makefiles/defs.make Wed Jul 05 18:01:11 2017 +0200
@@ -142,6 +142,7 @@
# client and server subdirectories have symbolic links to ../libjsig.so
EXPORT_LIST += $(EXPORT_JRE_LIB_ARCH_DIR)/libjsig.$(LIBRARY_SUFFIX)
EXPORT_SERVER_DIR = $(EXPORT_JRE_LIB_ARCH_DIR)/server
+EXPORT_CLIENT_DIR = $(EXPORT_JRE_LIB_ARCH_DIR)/client
ifndef BUILD_CLIENT_ONLY
EXPORT_LIST += $(EXPORT_SERVER_DIR)/Xusage.txt
@@ -150,7 +151,6 @@
ifneq ($(ZERO_BUILD), true)
ifeq ($(ARCH_DATA_MODEL), 32)
- EXPORT_CLIENT_DIR = $(EXPORT_JRE_LIB_ARCH_DIR)/client
EXPORT_LIST += $(EXPORT_CLIENT_DIR)/Xusage.txt
EXPORT_LIST += $(EXPORT_CLIENT_DIR)/libjvm.$(LIBRARY_SUFFIX)
endif
--- a/hotspot/make/bsd/makefiles/launcher.make Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/make/bsd/makefiles/launcher.make Wed Jul 05 18:01:11 2017 +0200
@@ -50,7 +50,24 @@
LIBS_LAUNCHER += $(STATIC_STDCXX) $(LIBS)
else
LAUNCHER.o = launcher.o
- LFLAGS_LAUNCHER += -L`pwd`
+ LFLAGS_LAUNCHER += -L`pwd`
+
+ # The gamma launcher runs the JDK from $JAVA_HOME, overriding the JVM with a
+ # freshly built JVM at ./libjvm.{so|dylib}. This is accomplished by setting
+ # the library searchpath using ({DY}LD_LIBRARY_PATH) to find the local JVM
+ # first. Gamma dlopen()s libjava from $JAVA_HOME/jre/lib{/$arch}, which is
+ # statically linked with CoreFoundation framework libs. Unfortunately, gamma's
+ # unique searchpath results in some unresolved symbols in the framework
+ # libraries, because JDK libraries are inadvertently discovered first on the
+ # searchpath, e.g. libjpeg. On Mac OS X, filenames are case *insensitive*.
+ # So, the actual filename collision is libjpeg.dylib and libJPEG.dylib.
+ # To resolve this, gamma needs to also statically link with the CoreFoundation
+ # framework libraries.
+
+ ifeq ($(OS_VENDOR),Darwin)
+ LFLAGS_LAUNCHER += -framework CoreFoundation
+ endif
+
LIBS_LAUNCHER += -l$(JVM) $(LIBS)
endif
--- a/hotspot/make/bsd/makefiles/vm.make Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/make/bsd/makefiles/vm.make Wed Jul 05 18:01:11 2017 +0200
@@ -337,8 +337,8 @@
$(LIBJVM).dSYM: $(LIBJVM)
dsymutil $(LIBJVM)
-# no launcher or libjvm_db for macosx
-build: $(LIBJVM) $(LIBJSIG) $(BUILDLIBSAPROC) dtraceCheck $(LIBJVM).dSYM
+# no libjvm_db for macosx
+build: $(LIBJVM) $(LAUNCHER) $(LIBJSIG) $(BUILDLIBSAPROC) dtraceCheck $(LIBJVM).dSYM
echo "Doing vm.make build:"
else
build: $(LIBJVM) $(LAUNCHER) $(LIBJSIG) $(LIBJVM_DB) $(BUILDLIBSAPROC)
--- a/hotspot/make/hotspot_version Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/make/hotspot_version Wed Jul 05 18:01:11 2017 +0200
@@ -35,7 +35,7 @@
HS_MAJOR_VER=23
HS_MINOR_VER=0
-HS_BUILD_NUMBER=11
+HS_BUILD_NUMBER=12
JDK_MAJOR_VER=1
JDK_MINOR_VER=8
--- a/hotspot/make/jprt.properties Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/make/jprt.properties Wed Jul 05 18:01:11 2017 +0200
@@ -174,6 +174,10 @@
jprt.my.linux.armsflt.ejdk7=linux_armsflt_2.6
jprt.my.linux.armsflt=${jprt.my.linux.armsflt.${jprt.tools.default.release}}
+jprt.my.macosx.x64.jdk8=macosx_x64_10.7
+jprt.my.macosx.x64.jdk7=macosx_x64_10.7
+jprt.my.macosx.x64=${jprt.my.macosx.x64.${jprt.tools.default.release}}
+
jprt.my.windows.i586.jdk8=windows_i586_5.1
jprt.my.windows.i586.jdk7=windows_i586_5.1
jprt.my.windows.i586.jdk7b107=windows_i586_5.0
@@ -211,6 +215,7 @@
${jprt.my.solaris.x64}-{product|fastdebug|debug}, \
${jprt.my.linux.i586}-{product|fastdebug|debug}, \
${jprt.my.linux.x64}-{product|fastdebug}, \
+ ${jprt.my.macosx.x64}-{product|fastdebug|debug}, \
${jprt.my.windows.i586}-{product|fastdebug|debug}, \
${jprt.my.windows.x64}-{product|fastdebug|debug}
@@ -416,6 +421,30 @@
${jprt.my.linux.x64}-{product|fastdebug}-c2-jbb_G1, \
${jprt.my.linux.x64}-{product|fastdebug}-c2-jbb_ParOldGC
+jprt.my.macosx.x64.test.targets = \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-jvm98, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-jvm98_nontiered, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-scimark, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCBasher_default, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCBasher_SerialGC, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCBasher_ParallelGC, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCBasher_ParNewGC, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCBasher_CMS, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCBasher_G1, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCBasher_ParOldGC, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCOld_default, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCOld_SerialGC, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCOld_ParallelGC, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCOld_ParNewGC, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCOld_CMS, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCOld_G1, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-GCOld_ParOldGC \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-jbb_default, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-jbb_default_tiered, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-jbb_ParallelGC, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-jbb_G1, \
+ ${jprt.my.macosx.x64}-{product|fastdebug}-c2-jbb_ParOldGC
+
jprt.my.windows.i586.test.targets = \
${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-jvm98, \
${jprt.my.windows.i586}-{product|fastdebug}-c2-jvm98_nontiered, \
@@ -492,6 +521,7 @@
${jprt.my.solaris.x64.test.targets}, \
${jprt.my.linux.i586.test.targets}, \
${jprt.my.linux.x64.test.targets}, \
+ ${jprt.my.macosx.x64.test.targets}, \
${jprt.my.windows.i586.test.targets}, \
${jprt.my.windows.x64.test.targets}, \
${jprt.test.targets.open}
@@ -538,6 +568,7 @@
${jprt.my.solaris.x64}-*-c2-servertest, \
${jprt.my.linux.i586}-*-c2-servertest, \
${jprt.my.linux.x64}-*-c2-servertest, \
+ ${jprt.my.macosx.x64}-*-c2-servertest, \
${jprt.my.windows.i586}-*-c2-servertest, \
${jprt.my.windows.x64}-*-c2-servertest
@@ -548,6 +579,7 @@
${jprt.my.solaris.x64}-fastdebug-c2-internalvmtests, \
${jprt.my.linux.i586}-fastdebug-c2-internalvmtests, \
${jprt.my.linux.x64}-fastdebug-c2-internalvmtests, \
+ ${jprt.my.macosx.x64}-fastdebug-c2-internalvmtests, \
${jprt.my.windows.i586}-fastdebug-c2-internalvmtests, \
${jprt.my.windows.x64}-fastdebug-c2-internalvmtests
--- a/hotspot/make/linux/makefiles/buildtree.make Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/make/linux/makefiles/buildtree.make Wed Jul 05 18:01:11 2017 +0200
@@ -326,11 +326,10 @@
$(BUILDTREE_COMMENT); \
[ -n "$$JAVA_HOME" ] && { echo ": \$${JAVA_HOME:=$${JAVA_HOME}}"; }; \
{ \
- echo "LD_LIBRARY_PATH=.:$${LD_LIBRARY_PATH:+$$LD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
echo "CLASSPATH=$${CLASSPATH:+$$CLASSPATH:}.:\$${JAVA_HOME}/jre/lib/rt.jar:\$${JAVA_HOME}/jre/lib/i18n.jar"; \
} | sed s:$${JAVA_HOME:--------}:\$${JAVA_HOME}:g; \
echo "HOTSPOT_BUILD_USER=\"$${LOGNAME:-$$USER} in `basename $(GAMMADIR)`\""; \
- echo "export JAVA_HOME LD_LIBRARY_PATH CLASSPATH HOTSPOT_BUILD_USER"; \
+ echo "export JAVA_HOME CLASSPATH HOTSPOT_BUILD_USER"; \
) > $@
env.csh: env.sh
@@ -384,7 +383,7 @@
JAVA_FLAG/64 = -d64
WRONG_DATA_MODE_MSG = \
- echo "JAVA_HOME must point to $(DATA_MODE)bit JDK."
+ echo "JAVA_HOME must point to a $(DATA_MODE)-bit OpenJDK."
CROSS_COMPILING_MSG = \
echo "Cross compiling for ARCH $(CROSS_COMPILE_ARCH), skipping gamma run."
@@ -392,19 +391,78 @@
test_gamma: $(BUILDTREE_MAKE) $(GAMMADIR)/make/test/Queens.java
@echo Creating $@ ...
$(QUIETLY) ( \
- echo '#!/bin/sh'; \
+ echo "#!/bin/sh"; \
+ echo ""; \
$(BUILDTREE_COMMENT); \
- echo '. ./env.sh'; \
- echo "if [ \"$(CROSS_COMPILE_ARCH)\" != \"\" ]; then { $(CROSS_COMPILING_MSG); exit 0; }; fi"; \
- echo "if [ -z \$$JAVA_HOME ]; then { $(NO_JAVA_HOME_MSG); exit 0; }; fi"; \
- echo "if ! \$${JAVA_HOME}/bin/java $(JAVA_FLAG) -fullversion 2>&1 > /dev/null"; \
- echo "then"; \
- echo " $(WRONG_DATA_MODE_MSG); exit 0;"; \
+ echo ""; \
+ echo "# Include environment settings for gamma run"; \
+ echo ""; \
+ echo ". ./env.sh"; \
+ echo ""; \
+ echo "# Do not run gamma test for cross compiles"; \
+ echo ""; \
+ echo "if [ -n \"$(CROSS_COMPILE_ARCH)\" ]; then "; \
+ echo " $(CROSS_COMPILING_MSG)"; \
+ echo " exit 0"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Make sure JAVA_HOME is set as it is required for gamma"; \
+ echo ""; \
+ echo "if [ -z \"\$${JAVA_HOME}\" ]; then "; \
+ echo " $(NO_JAVA_HOME_MSG)"; \
+ echo " exit 0"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Check JAVA_HOME version to be used for the test"; \
+ echo ""; \
+ echo "\$${JAVA_HOME}/bin/java $(JAVA_FLAG) -fullversion > /dev/null 2>&1"; \
+ echo "if [ \$$? -ne 0 ]; then "; \
+ echo " $(WRONG_DATA_MODE_MSG)"; \
+ echo " exit 0"; \
echo "fi"; \
+ echo ""; \
+ echo "# Use gamma_g if it exists"; \
+ echo ""; \
+ echo "GAMMA_PROG=gamma"; \
+ echo "if [ -f gamma_g ]; then "; \
+ echo " GAMMA_PROG=gamma_g"; \
+ echo "fi"; \
+ echo ""; \
+ echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
+ echo " # Ensure architecture for gamma and JAVA_HOME is the same."; \
+ echo " # NOTE: gamma assumes the OpenJDK directory layout."; \
+ echo ""; \
+ echo " GAMMA_ARCH=\"\`file \$${GAMMA_PROG} | awk '{print \$$NF}'\`\""; \
+ echo " JVM_LIB=\"\$${JAVA_HOME}/jre/lib/libjava.$(LIBRARY_SUFFIX)\""; \
+ echo " if [ ! -f \$${JVM_LIB} ]; then"; \
+ echo " JVM_LIB=\"\$${JAVA_HOME}/jre/lib/$${LIBARCH}/libjava.$(LIBRARY_SUFFIX)\""; \
+ echo " fi"; \
+ echo " if [ ! -f \$${JVM_LIB} ] || [ -z \"\`file \$${JVM_LIB} | grep \$${GAMMA_ARCH}\`\" ]; then "; \
+ echo " $(WRONG_DATA_MODE_MSG)"; \
+ echo " exit 0"; \
+ echo " fi"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Compile Queens program for test"; \
+ echo ""; \
echo "rm -f Queens.class"; \
echo "\$${JAVA_HOME}/bin/javac -d . $(GAMMADIR)/make/test/Queens.java"; \
- echo '[ -f gamma_g ] && { gamma=gamma_g; }'; \
- echo './$${gamma:-gamma} $(TESTFLAGS) Queens < /dev/null'; \
+ echo ""; \
+ echo "# Set library path solely for gamma launcher test run"; \
+ echo ""; \
+ echo "LD_LIBRARY_PATH=.:$${LD_LIBRARY_PATH:+$$LD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
+ echo "export LD_LIBRARY_PATH"; \
+ echo "unset LD_LIBRARY_PATH_32"; \
+ echo "unset LD_LIBRARY_PATH_64"; \
+ echo ""; \
+ echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
+ echo " DYLD_LIBRARY_PATH=.:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/native_threads:\$${JAVA_HOME}/jre/lib:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
+ echo " export DYLD_LIBRARY_PATH"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Use the gamma launcher and JAVA_HOME to run the test"; \
+ echo ""; \
+ echo "./\$${GAMMA_PROG} $(TESTFLAGS) Queens < /dev/null"; \
) > $@
$(QUIETLY) chmod +x $@
--- a/hotspot/make/solaris/makefiles/buildtree.make Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/make/solaris/makefiles/buildtree.make Wed Jul 05 18:01:11 2017 +0200
@@ -118,7 +118,7 @@
BUILDTREE_MAKE = $(GAMMADIR)/make/$(OS_FAMILY)/makefiles/buildtree.make
BUILDTREE_TARGETS = Makefile flags.make flags_vm.make vm.make adlc.make jvmti.make sa.make \
- env.ksh env.csh jdkpath.sh .dbxrc test_gamma
+ env.sh env.csh jdkpath.sh .dbxrc test_gamma
BUILDTREE_VARS = GAMMADIR=$(GAMMADIR) OS_FAMILY=$(OS_FAMILY) \
ARCH=$(ARCH) BUILDARCH=$(BUILDARCH) LIBARCH=$(LIBARCH) VARIANT=$(VARIANT)
@@ -313,22 +313,19 @@
echo "include \$$(GAMMADIR)/make/$(OS_FAMILY)/makefiles/$(@F)"; \
) > $@
-env.ksh: $(BUILDTREE_MAKE)
+env.sh: $(BUILDTREE_MAKE)
@echo Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
[ -n "$$JAVA_HOME" ] && { echo ": \$${JAVA_HOME:=$${JAVA_HOME}}"; }; \
{ \
- echo "LD_LIBRARY_PATH=.:$${LD_LIBRARY_PATH:+$$LD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
- echo "unset LD_LIBRARY_PATH_32"; \
- echo "unset LD_LIBRARY_PATH_64"; \
echo "CLASSPATH=$${CLASSPATH:+$$CLASSPATH:}.:\$${JAVA_HOME}/jre/lib/rt.jar:\$${JAVA_HOME}/jre/lib/i18n.jar"; \
} | sed s:$${JAVA_HOME:--------}:\$${JAVA_HOME}:g; \
echo "HOTSPOT_BUILD_USER=\"$${LOGNAME:-$$USER} in `basename $(GAMMADIR)`\""; \
echo "export JAVA_HOME LD_LIBRARY_PATH CLASSPATH HOTSPOT_BUILD_USER"; \
) > $@
-env.csh: env.ksh
+env.csh: env.sh
@echo Creating $@ ...
$(QUIETLY) ( \
$(BUILDTREE_COMMENT); \
@@ -384,23 +381,86 @@
JAVA_FLAG/64 = -d64
WRONG_DATA_MODE_MSG = \
- echo "JAVA_HOME must point to $(DATA_MODE)bit JDK."
+ echo "JAVA_HOME must point to a $(DATA_MODE)-bit OpenJDK."
+
+CROSS_COMPILING_MSG = \
+ echo "Cross compiling for ARCH $(CROSS_COMPILE_ARCH), skipping gamma run."
test_gamma: $(BUILDTREE_MAKE) $(GAMMADIR)/make/test/Queens.java
@echo Creating $@ ...
$(QUIETLY) ( \
- echo '#!/bin/ksh'; \
+ echo "#!/bin/sh"; \
+ echo ""; \
$(BUILDTREE_COMMENT); \
- echo '. ./env.ksh'; \
- echo "if [ -z \$$JAVA_HOME ]; then { $(NO_JAVA_HOME_MSG); exit 0; }; fi"; \
- echo "if ! \$${JAVA_HOME}/bin/java $(JAVA_FLAG) -fullversion 2>&1 > /dev/null"; \
- echo "then"; \
- echo " $(WRONG_DATA_MODE_MSG); exit 0;"; \
+ echo ""; \
+ echo "# Include environment settings for gamma run"; \
+ echo ""; \
+ echo ". ./env.sh"; \
+ echo ""; \
+ echo "# Do not run gamma test for cross compiles"; \
+ echo ""; \
+ echo "if [ -n \"$(CROSS_COMPILE_ARCH)\" ]; then "; \
+ echo " $(CROSS_COMPILING_MSG)"; \
+ echo " exit 0"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Make sure JAVA_HOME is set as it is required for gamma"; \
+ echo ""; \
+ echo "if [ -z \"\$${JAVA_HOME}\" ]; then "; \
+ echo " $(NO_JAVA_HOME_MSG)"; \
+ echo " exit 0"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Check JAVA_HOME version to be used for the test"; \
+ echo ""; \
+ echo "\$${JAVA_HOME}/bin/java $(JAVA_FLAG) -fullversion > /dev/null 2>&1"; \
+ echo "if [ \$$? -ne 0 ]; then "; \
+ echo " $(WRONG_DATA_MODE_MSG)"; \
+ echo " exit 0"; \
echo "fi"; \
+ echo ""; \
+ echo "# Use gamma_g if it exists"; \
+ echo ""; \
+ echo "GAMMA_PROG=gamma"; \
+ echo "if [ -f gamma_g ]; then "; \
+ echo " GAMMA_PROG=gamma_g"; \
+ echo "fi"; \
+ echo ""; \
+ echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
+ echo " # Ensure architecture for gamma and JAVA_HOME is the same."; \
+ echo " # NOTE: gamma assumes the OpenJDK directory layout."; \
+ echo ""; \
+ echo " GAMMA_ARCH=\"\`file \$${GAMMA_PROG} | awk '{print \$$NF}'\`\""; \
+ echo " JVM_LIB=\"\$${JAVA_HOME}/jre/lib/libjava.$(LIBRARY_SUFFIX)\""; \
+ echo " if [ ! -f \$${JVM_LIB} ]; then"; \
+ echo " JVM_LIB=\"\$${JAVA_HOME}/jre/lib/$${LIBARCH}/libjava.$(LIBRARY_SUFFIX)\""; \
+ echo " fi"; \
+ echo " if [ ! -f \$${JVM_LIB} ] || [ -z \"\`file \$${JVM_LIB} | grep \$${GAMMA_ARCH}\`\" ]; then "; \
+ echo " $(WRONG_DATA_MODE_MSG)"; \
+ echo " exit 0"; \
+ echo " fi"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Compile Queens program for test"; \
+ echo ""; \
echo "rm -f Queens.class"; \
echo "\$${JAVA_HOME}/bin/javac -d . $(GAMMADIR)/make/test/Queens.java"; \
- echo '[ -f gamma_g ] && { gamma=gamma_g; }'; \
- echo './$${gamma:-gamma} $(TESTFLAGS) Queens < /dev/null'; \
+ echo ""; \
+ echo "# Set library path solely for gamma launcher test run"; \
+ echo ""; \
+ echo "LD_LIBRARY_PATH=.:$${LD_LIBRARY_PATH:+$$LD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
+ echo "export LD_LIBRARY_PATH"; \
+ echo "unset LD_LIBRARY_PATH_32"; \
+ echo "unset LD_LIBRARY_PATH_64"; \
+ echo ""; \
+ echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
+ echo " DYLD_LIBRARY_PATH=.:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/native_threads:\$${JAVA_HOME}/jre/lib:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
+ echo " export DYLD_LIBRARY_PATH"; \
+ echo "fi"; \
+ echo ""; \
+ echo "# Use the gamma launcher and JAVA_HOME to run the test"; \
+ echo ""; \
+ echo "./\$${GAMMA_PROG} $(TESTFLAGS) Queens < /dev/null"; \
) > $@
$(QUIETLY) chmod +x $@
--- a/hotspot/src/cpu/sparc/vm/frame_sparc.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/cpu/sparc/vm/frame_sparc.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -810,7 +810,7 @@
}
-#ifdef ASSERT
+#ifndef PRODUCT
#define DESCRIBE_FP_OFFSET(name) \
values.describe(frame_no, fp() + frame::name##_offset, #name)
@@ -820,11 +820,19 @@
values.describe(frame_no, sp() + w, err_msg("register save area word %d", w), 1);
}
- if (is_interpreted_frame()) {
+ if (is_ricochet_frame()) {
+ MethodHandles::RicochetFrame::describe(this, values, frame_no);
+ } else if (is_interpreted_frame()) {
DESCRIBE_FP_OFFSET(interpreter_frame_d_scratch_fp);
DESCRIBE_FP_OFFSET(interpreter_frame_l_scratch_fp);
DESCRIBE_FP_OFFSET(interpreter_frame_padding);
DESCRIBE_FP_OFFSET(interpreter_frame_oop_temp);
+
+ // esp, according to Lesp (e.g. not depending on bci), if seems valid
+ intptr_t* esp = *interpreter_frame_esp_addr();
+ if ((esp >= sp()) && (esp < fp())) {
+ values.describe(-1, esp, "*Lesp");
+ }
}
if (!is_compiled_frame()) {
@@ -844,4 +852,3 @@
// unused... but returns fp() to minimize changes introduced by 7087445
return fp();
}
-
--- a/hotspot/src/cpu/sparc/vm/methodHandles_sparc.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/cpu/sparc/vm/methodHandles_sparc.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2012, 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
@@ -177,7 +177,7 @@
BLOCK_COMMENT("ricochet_blob.bounce");
if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm);
- trace_method_handle(_masm, "ricochet_blob.bounce");
+ trace_method_handle(_masm, "return/ricochet_blob.bounce");
__ JMP(L1_continuation, 0);
__ delayed()->nop();
@@ -268,14 +268,16 @@
}
// Emit code to verify that FP is pointing at a valid ricochet frame.
-#ifdef ASSERT
+#ifndef PRODUCT
enum {
ARG_LIMIT = 255, SLOP = 45,
// use this parameter for checking for garbage stack movements:
UNREASONABLE_STACK_MOVE = (ARG_LIMIT + SLOP)
// the slop defends against false alarms due to fencepost errors
};
+#endif
+#ifdef ASSERT
void MethodHandles::RicochetFrame::verify_clean(MacroAssembler* _masm) {
// The stack should look like this:
// ... keep1 | dest=42 | keep2 | magic | handler | magic | recursive args | [RF]
@@ -1001,31 +1003,142 @@
}
#ifndef PRODUCT
+void MethodHandles::RicochetFrame::describe(const frame* fr, FrameValues& values, int frame_no) {
+ RicochetFrame* rf = new RicochetFrame(*fr);
+
+ // ricochet slots (kept in registers for sparc)
+ values.describe(frame_no, rf->register_addr(I5_savedSP), err_msg("exact_sender_sp reg for #%d", frame_no));
+ values.describe(frame_no, rf->register_addr(L5_conversion), err_msg("conversion reg for #%d", frame_no));
+ values.describe(frame_no, rf->register_addr(L4_saved_args_base), err_msg("saved_args_base reg for #%d", frame_no));
+ values.describe(frame_no, rf->register_addr(L3_saved_args_layout), err_msg("saved_args_layout reg for #%d", frame_no));
+ values.describe(frame_no, rf->register_addr(L2_saved_target), err_msg("saved_target reg for #%d", frame_no));
+ values.describe(frame_no, rf->register_addr(L1_continuation), err_msg("continuation reg for #%d", frame_no));
+
+ // relevant ricochet targets (in caller frame)
+ values.describe(-1, rf->saved_args_base(), err_msg("*saved_args_base for #%d", frame_no));
+ values.describe(-1, (intptr_t *)(STACK_BIAS+(uintptr_t)rf->exact_sender_sp()), err_msg("*exact_sender_sp+STACK_BIAS for #%d", frame_no));
+}
+#endif // ASSERT
+
+#ifndef PRODUCT
extern "C" void print_method_handle(oop mh);
void trace_method_handle_stub(const char* adaptername,
oopDesc* mh,
- intptr_t* saved_sp) {
+ intptr_t* saved_sp,
+ intptr_t* args,
+ intptr_t* tracing_fp) {
bool has_mh = (strstr(adaptername, "return/") == NULL); // return adapters don't have mh
- tty->print_cr("MH %s mh="INTPTR_FORMAT " saved_sp=" INTPTR_FORMAT, adaptername, (intptr_t) mh, saved_sp);
- if (has_mh)
+
+ tty->print_cr("MH %s mh="INTPTR_FORMAT " saved_sp=" INTPTR_FORMAT " args=" INTPTR_FORMAT, adaptername, (intptr_t) mh, saved_sp, args);
+
+ if (Verbose) {
+ // dumping last frame with frame::describe
+
+ JavaThread* p = JavaThread::active();
+
+ ResourceMark rm;
+ PRESERVE_EXCEPTION_MARK; // may not be needed by safer and unexpensive here
+ FrameValues values;
+
+ // Note: We want to allow trace_method_handle from any call site.
+ // While trace_method_handle creates a frame, it may be entered
+ // without a valid return PC in O7 (e.g. not just after a call).
+ // Walking that frame could lead to failures due to that invalid PC.
+ // => carefully detect that frame when doing the stack walking
+
+ // walk up to the right frame using the "tracing_fp" argument
+ intptr_t* cur_sp = StubRoutines::Sparc::flush_callers_register_windows_func()();
+ frame cur_frame(cur_sp, frame::unpatchable, NULL);
+
+ while (cur_frame.fp() != (intptr_t *)(STACK_BIAS+(uintptr_t)tracing_fp)) {
+ cur_frame = os::get_sender_for_C_frame(&cur_frame);
+ }
+
+ // safely create a frame and call frame::describe
+ intptr_t *dump_sp = cur_frame.sender_sp();
+ intptr_t *dump_fp = cur_frame.link();
+
+ bool walkable = has_mh; // whether the traced frame shoud be walkable
+
+ // the sender for cur_frame is the caller of trace_method_handle
+ if (walkable) {
+ // The previous definition of walkable may have to be refined
+ // if new call sites cause the next frame constructor to start
+ // failing. Alternatively, frame constructors could be
+ // modified to support the current or future non walkable
+ // frames (but this is more intrusive and is not considered as
+ // part of this RFE, which will instead use a simpler output).
+ frame dump_frame = frame(dump_sp,
+ cur_frame.sp(), // younger_sp
+ false); // no adaptation
+ dump_frame.describe(values, 1);
+ } else {
+ // Robust dump for frames which cannot be constructed from sp/younger_sp
+ // Add descriptions without building a Java frame to avoid issues
+ values.describe(-1, dump_fp, "fp for #1 <not parsed, cannot trust pc>");
+ values.describe(-1, dump_sp, "sp");
+ }
+
+ bool has_args = has_mh; // whether Gargs is meaningful
+
+ // mark args, if seems valid (may not be valid for some adapters)
+ if (has_args) {
+ if ((args >= dump_sp) && (args < dump_fp)) {
+ values.describe(-1, args, "*G4_args");
+ }
+ }
+
+ // mark saved_sp, if seems valid (may not be valid for some adapters)
+ intptr_t *unbiased_sp = (intptr_t *)(STACK_BIAS+(uintptr_t)saved_sp);
+ if ((unbiased_sp >= dump_sp - UNREASONABLE_STACK_MOVE) && (unbiased_sp < dump_fp)) {
+ values.describe(-1, unbiased_sp, "*saved_sp+STACK_BIAS");
+ }
+
+ // Note: the unextended_sp may not be correct
+ tty->print_cr(" stack layout:");
+ values.print(p);
+ }
+
+ if (has_mh) {
print_method_handle(mh);
+ }
}
+
void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
if (!TraceMethodHandles) return;
BLOCK_COMMENT("trace_method_handle {");
// save: Gargs, O5_savedSP
- __ save_frame(16);
+ __ save_frame(16); // need space for saving required FPU state
+
__ set((intptr_t) adaptername, O0);
__ mov(G3_method_handle, O1);
__ mov(I5_savedSP, O2);
+ __ mov(Gargs, O3);
+ __ mov(I6, O4); // frame identifier for safe stack walking
+
+ // Save scratched registers that might be needed. Robustness is more
+ // important than optimizing the saves for this debug only code.
+
+ // save FP result, valid at some call sites (adapter_opt_return_float, ...)
+ Address d_save(FP, -sizeof(jdouble) + STACK_BIAS);
+ __ stf(FloatRegisterImpl::D, Ftos_d, d_save);
+ // Safely save all globals but G2 (handled by call_VM_leaf) and G7
+ // (OS reserved).
__ mov(G3_method_handle, L3);
__ mov(Gargs, L4);
__ mov(G5_method_type, L5);
- __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
+ __ mov(G6, L6);
+ __ mov(G1, L1);
+
+ __ call_VM_leaf(L2 /* for G2 */, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
__ mov(L3, G3_method_handle);
__ mov(L4, Gargs);
__ mov(L5, G5_method_type);
+ __ mov(L6, G6);
+ __ mov(L1, G1);
+ __ ldf(FloatRegisterImpl::D, d_save, Ftos_d);
+
__ restore();
BLOCK_COMMENT("} trace_method_handle");
}
@@ -1250,7 +1363,7 @@
move_typed_arg(_masm, arg_type, false,
prim_value_addr,
Address(O0_argslot, 0),
- O2_scratch); // must be an even register for !_LP64 long moves (uses O2/O3)
+ O2_scratch); // must be an even register for !_LP64 long moves (uses O2/O3)
}
if (direct_to_method) {
--- a/hotspot/src/cpu/sparc/vm/methodHandles_sparc.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/cpu/sparc/vm/methodHandles_sparc.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2012, 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
@@ -145,6 +145,8 @@
}
static void verify_clean(MacroAssembler* _masm) NOT_DEBUG_RETURN;
+
+ static void describe(const frame* fr, FrameValues& values, int frame_no) PRODUCT_RETURN;
};
// Additional helper methods for MethodHandles code generation:
--- a/hotspot/src/cpu/x86/vm/frame_x86.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/cpu/x86/vm/frame_x86.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -651,13 +651,15 @@
return &interpreter_frame_tos_address()[index];
}
-#ifdef ASSERT
+#ifndef PRODUCT
#define DESCRIBE_FP_OFFSET(name) \
values.describe(frame_no, fp() + frame::name##_offset, #name)
void frame::describe_pd(FrameValues& values, int frame_no) {
- if (is_interpreted_frame()) {
+ if (is_ricochet_frame()) {
+ MethodHandles::RicochetFrame::describe(this, values, frame_no);
+ } else if (is_interpreted_frame()) {
DESCRIBE_FP_OFFSET(interpreter_frame_sender_sp);
DESCRIBE_FP_OFFSET(interpreter_frame_last_sp);
DESCRIBE_FP_OFFSET(interpreter_frame_method);
@@ -667,7 +669,6 @@
DESCRIBE_FP_OFFSET(interpreter_frame_bcx);
DESCRIBE_FP_OFFSET(interpreter_frame_initial_sp);
}
-
}
#endif
--- a/hotspot/src/cpu/x86/vm/methodHandles_x86.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/cpu/x86/vm/methodHandles_x86.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -279,14 +279,16 @@
}
// Emit code to verify that RBP is pointing at a valid ricochet frame.
-#ifdef ASSERT
+#ifndef PRODUCT
enum {
ARG_LIMIT = 255, SLOP = 4,
// use this parameter for checking for garbage stack movements:
UNREASONABLE_STACK_MOVE = (ARG_LIMIT + SLOP)
// the slop defends against false alarms due to fencepost errors
};
+#endif
+#ifdef ASSERT
void MethodHandles::RicochetFrame::verify_clean(MacroAssembler* _masm) {
// The stack should look like this:
// ... keep1 | dest=42 | keep2 | RF | magic | handler | magic | recursive args |
@@ -990,6 +992,26 @@
BLOCK_COMMENT("} move_return_value");
}
+#ifndef PRODUCT
+#define DESCRIBE_RICOCHET_OFFSET(rf, name) \
+ values.describe(frame_no, (intptr_t *) (((uintptr_t)rf) + MethodHandles::RicochetFrame::name##_offset_in_bytes()), #name)
+
+void MethodHandles::RicochetFrame::describe(const frame* fr, FrameValues& values, int frame_no) {
+ address bp = (address) fr->fp();
+ RicochetFrame* rf = (RicochetFrame*)(bp - sender_link_offset_in_bytes());
+
+ // ricochet slots
+ DESCRIBE_RICOCHET_OFFSET(rf, exact_sender_sp);
+ DESCRIBE_RICOCHET_OFFSET(rf, conversion);
+ DESCRIBE_RICOCHET_OFFSET(rf, saved_args_base);
+ DESCRIBE_RICOCHET_OFFSET(rf, saved_args_layout);
+ DESCRIBE_RICOCHET_OFFSET(rf, saved_target);
+ DESCRIBE_RICOCHET_OFFSET(rf, continuation);
+
+ // relevant ricochet targets (in caller frame)
+ values.describe(-1, rf->saved_args_base(), err_msg("*saved_args_base for #%d", frame_no));
+}
+#endif // ASSERT
#ifndef PRODUCT
extern "C" void print_method_handle(oop mh);
@@ -1001,6 +1023,7 @@
intptr_t* saved_bp) {
// called as a leaf from native code: do not block the JVM!
bool has_mh = (strstr(adaptername, "return/") == NULL); // return adapters don't have rcx_mh
+
intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset];
intptr_t* base_sp = last_sp;
typedef MethodHandles::RicochetFrame RicochetFrame;
@@ -1030,13 +1053,64 @@
tty->cr();
if (last_sp != saved_sp && last_sp != NULL)
tty->print_cr("*** last_sp="PTR_FORMAT, (intptr_t)last_sp);
- int stack_dump_count = 16;
- if (stack_dump_count < (int)(saved_bp + 2 - saved_sp))
- stack_dump_count = (int)(saved_bp + 2 - saved_sp);
- if (stack_dump_count > 64) stack_dump_count = 48;
- for (i = 0; i < stack_dump_count; i += 4) {
- tty->print_cr(" dump at SP[%d] "PTR_FORMAT": "PTR_FORMAT" "PTR_FORMAT" "PTR_FORMAT" "PTR_FORMAT,
- i, (intptr_t) &entry_sp[i+0], entry_sp[i+0], entry_sp[i+1], entry_sp[i+2], entry_sp[i+3]);
+
+ {
+ // dumping last frame with frame::describe
+
+ JavaThread* p = JavaThread::active();
+
+ ResourceMark rm;
+ PRESERVE_EXCEPTION_MARK; // may not be needed by safer and unexpensive here
+ FrameValues values;
+
+ // Note: We want to allow trace_method_handle from any call site.
+ // While trace_method_handle creates a frame, it may be entered
+ // without a PC on the stack top (e.g. not just after a call).
+ // Walking that frame could lead to failures due to that invalid PC.
+ // => carefully detect that frame when doing the stack walking
+
+ // Current C frame
+ frame cur_frame = os::current_frame();
+
+ // Robust search of trace_calling_frame (independant of inlining).
+ // Assumes saved_regs comes from a pusha in the trace_calling_frame.
+ assert(cur_frame.sp() < saved_regs, "registers not saved on stack ?");
+ frame trace_calling_frame = os::get_sender_for_C_frame(&cur_frame);
+ while (trace_calling_frame.fp() < saved_regs) {
+ trace_calling_frame = os::get_sender_for_C_frame(&trace_calling_frame);
+ }
+
+ // safely create a frame and call frame::describe
+ intptr_t *dump_sp = trace_calling_frame.sender_sp();
+ intptr_t *dump_fp = trace_calling_frame.link();
+
+ bool walkable = has_mh; // whether the traced frame shoud be walkable
+
+ if (walkable) {
+ // The previous definition of walkable may have to be refined
+ // if new call sites cause the next frame constructor to start
+ // failing. Alternatively, frame constructors could be
+ // modified to support the current or future non walkable
+ // frames (but this is more intrusive and is not considered as
+ // part of this RFE, which will instead use a simpler output).
+ frame dump_frame = frame(dump_sp, dump_fp);
+ dump_frame.describe(values, 1);
+ } else {
+ // Stack may not be walkable (invalid PC above FP):
+ // Add descriptions without building a Java frame to avoid issues
+ values.describe(-1, dump_fp, "fp for #1 <not parsed, cannot trust pc>");
+ values.describe(-1, dump_sp, "sp for #1");
+ }
+
+ // mark saved_sp if seems valid
+ if (has_mh) {
+ if ((saved_sp >= dump_sp - UNREASONABLE_STACK_MOVE) && (saved_sp < dump_fp)) {
+ values.describe(-1, saved_sp, "*saved_sp");
+ }
+ }
+
+ tty->print_cr(" stack layout:");
+ values.print(p);
}
if (has_mh)
print_method_handle(mh);
@@ -1066,26 +1140,49 @@
void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
if (!TraceMethodHandles) return;
BLOCK_COMMENT("trace_method_handle {");
- __ push(rax);
- __ lea(rax, Address(rsp, wordSize * NOT_LP64(6) LP64_ONLY(14))); // entry_sp __ pusha();
+ __ enter();
+ __ andptr(rsp, -16); // align stack if needed for FPU state
__ pusha();
- __ mov(rbx, rsp);
- __ enter();
+ __ mov(rbx, rsp); // for retreiving saved_regs
+ // Note: saved_regs must be in the entered frame for the
+ // robust stack walking implemented in trace_method_handle_stub.
+
+ // save FP result, valid at some call sites (adapter_opt_return_float, ...)
+ __ increment(rsp, -2 * wordSize);
+ if (UseSSE >= 2) {
+ __ movdbl(Address(rsp, 0), xmm0);
+ } else if (UseSSE == 1) {
+ __ movflt(Address(rsp, 0), xmm0);
+ } else {
+ __ fst_d(Address(rsp, 0));
+ }
+
// incoming state:
// rcx: method handle
// r13 or rsi: saved sp
// To avoid calling convention issues, build a record on the stack and pass the pointer to that instead.
+ // Note: fix the increment below if pushing more arguments
__ push(rbp); // saved_bp
- __ push(rsi); // saved_sp
- __ push(rax); // entry_sp
+ __ push(saved_last_sp_register()); // saved_sp
+ __ push(rbp); // entry_sp (with extra align space)
__ push(rbx); // pusha saved_regs
__ push(rcx); // mh
- __ push(rcx); // adaptername
+ __ push(rcx); // slot for adaptername
__ movptr(Address(rsp, 0), (intptr_t) adaptername);
__ super_call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub_wrapper), rsp);
- __ leave();
+ __ increment(rsp, 6 * wordSize); // MethodHandleStubArguments
+
+ if (UseSSE >= 2) {
+ __ movdbl(xmm0, Address(rsp, 0));
+ } else if (UseSSE == 1) {
+ __ movflt(xmm0, Address(rsp, 0));
+ } else {
+ __ fld_d(Address(rsp, 0));
+ }
+ __ increment(rsp, 2 * wordSize);
+
__ popa();
- __ pop(rax);
+ __ leave();
BLOCK_COMMENT("} trace_method_handle");
}
#endif //PRODUCT
--- a/hotspot/src/cpu/x86/vm/methodHandles_x86.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/cpu/x86/vm/methodHandles_x86.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2012, 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
@@ -224,6 +224,8 @@
}
static void verify_clean(MacroAssembler* _masm) NOT_DEBUG_RETURN;
+
+ static void describe(const frame* fr, FrameValues& values, int frame_no) PRODUCT_RETURN;
};
// Additional helper methods for MethodHandles code generation:
--- a/hotspot/src/cpu/zero/vm/frame_zero.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/cpu/zero/vm/frame_zero.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -418,7 +418,7 @@
}
}
-#ifdef ASSERT
+#ifndef PRODUCT
void frame::describe_pd(FrameValues& values, int frame_no) {
--- a/hotspot/src/os/bsd/vm/os_bsd.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/os/bsd/vm/os_bsd.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2012, 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
@@ -301,6 +301,12 @@
#error Add appropriate cpu_arch setting
#endif
+// Compiler variant
+#ifdef COMPILER2
+#define COMPILER_VARIANT "server"
+#else
+#define COMPILER_VARIANT "client"
+#endif
#ifndef _ALLBSD_SOURCE
// pid_t gettid()
@@ -2507,7 +2513,7 @@
static char saved_jvm_path[MAXPATHLEN] = {0};
-// Find the full path to the current module, libjvm.so or libjvm_g.so
+// Find the full path to the current module, libjvm or libjvm_g
void os::jvm_path(char *buf, jint buflen) {
// Error checking.
if (buflen < MAXPATHLEN) {
@@ -2532,11 +2538,11 @@
if (Arguments::created_by_gamma_launcher()) {
// Support for the gamma launcher. Typical value for buf is
- // "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so". If "/jre/lib/" appears at
+ // "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm". If "/jre/lib/" appears at
// the right place in the string, then assume we are installed in a JDK and
- // we're done. Otherwise, check for a JAVA_HOME environment variable and fix
- // up the path so it looks like libjvm.so is installed there (append a
- // fake suffix hotspot/libjvm.so).
+ // we're done. Otherwise, check for a JAVA_HOME environment variable and
+ // construct a path to the JVM being overridden.
+
const char *p = buf + strlen(buf) - 1;
for (int count = 0; p > buf && count < 5; ++count) {
for (--p; p > buf && *p != '/'; --p)
@@ -2550,7 +2556,7 @@
char* jrelib_p;
int len;
- // Check the current module name "libjvm.so" or "libjvm_g.so".
+ // Check the current module name "libjvm" or "libjvm_g".
p = strrchr(buf, '/');
assert(strstr(p, "/libjvm") == p, "invalid library name");
p = strstr(p, "_g") ? "_g" : "";
@@ -2563,19 +2569,32 @@
// modules image doesn't have "jre" subdirectory
len = strlen(buf);
jrelib_p = buf + len;
- snprintf(jrelib_p, buflen-len, "/jre/lib/%s", cpu_arch);
+
+ // Add the appropriate library subdir
+ snprintf(jrelib_p, buflen-len, "/jre/lib");
if (0 != access(buf, F_OK)) {
- snprintf(jrelib_p, buflen-len, "/lib/%s", cpu_arch);
+ snprintf(jrelib_p, buflen-len, "/lib");
}
+ // Add the appropriate client or server subdir
+ len = strlen(buf);
+ jrelib_p = buf + len;
+ snprintf(jrelib_p, buflen-len, "/%s", COMPILER_VARIANT);
+ if (0 != access(buf, F_OK)) {
+ snprintf(jrelib_p, buflen-len, "");
+ }
+
+ // If the path exists within JAVA_HOME, add the JVM library name
+ // to complete the path to JVM being overridden. Otherwise fallback
+ // to the path to the current library.
if (0 == access(buf, F_OK)) {
- // Use current module name "libjvm[_g].so" instead of
- // "libjvm"debug_only("_g")".so" since for fastdebug version
- // we should have "libjvm.so" but debug_only("_g") adds "_g"!
+ // Use current module name "libjvm[_g]" instead of
+ // "libjvm"debug_only("_g")"" since for fastdebug version
+ // we should have "libjvm" but debug_only("_g") adds "_g"!
len = strlen(buf);
- snprintf(buf + len, buflen-len, "/hotspot/libjvm%s.so", p);
+ snprintf(buf + len, buflen-len, "/libjvm%s%s", p, JNI_LIB_SUFFIX);
} else {
- // Go back to path of .so
+ // Fall back to path of current library
rp = realpath(dli_fname, buf);
if (rp == NULL)
return;
@@ -3570,26 +3589,28 @@
// It is only used when ThreadPriorityPolicy=1 and requires root privilege.
#if defined(_ALLBSD_SOURCE) && !defined(__APPLE__)
-int os::java_to_os_priority[MaxPriority + 1] = {
+int os::java_to_os_priority[CriticalPriority + 1] = {
19, // 0 Entry should never be used
0, // 1 MinPriority
3, // 2
6, // 3
- 10, // 4
- 15, // 5 NormPriority
- 18, // 6
-
- 21, // 7
- 25, // 8
- 28, // 9 NearMaxPriority
-
- 31 // 10 MaxPriority
+ 10, // 4
+ 15, // 5 NormPriority
+ 18, // 6
+
+ 21, // 7
+ 25, // 8
+ 28, // 9 NearMaxPriority
+
+ 31, // 10 MaxPriority
+
+ 31 // 11 CriticalPriority
};
#elif defined(__APPLE__)
/* Using Mach high-level priority assignments */
-int os::java_to_os_priority[MaxPriority + 1] = {
+int os::java_to_os_priority[CriticalPriority + 1] = {
0, // 0 Entry should never be used (MINPRI_USER)
27, // 1 MinPriority
@@ -3604,10 +3625,12 @@
34, // 8
35, // 9 NearMaxPriority
- 36 // 10 MaxPriority
+ 36, // 10 MaxPriority
+
+ 36 // 11 CriticalPriority
};
#else
-int os::java_to_os_priority[MaxPriority + 1] = {
+int os::java_to_os_priority[CriticalPriority + 1] = {
19, // 0 Entry should never be used
4, // 1 MinPriority
@@ -3622,7 +3645,9 @@
-3, // 8
-4, // 9 NearMaxPriority
- -5 // 10 MaxPriority
+ -5, // 10 MaxPriority
+
+ -5 // 11 CriticalPriority
};
#endif
@@ -3638,6 +3663,9 @@
ThreadPriorityPolicy = 0;
}
}
+ if (UseCriticalJavaThreadPriority) {
+ os::java_to_os_priority[MaxPriority] = os::java_to_os_priority[CriticalPriority];
+ }
return 0;
}
--- a/hotspot/src/os/linux/vm/os_linux.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/os/linux/vm/os_linux.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2012, 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
@@ -3383,7 +3383,7 @@
// this reason, the code should not be used as default (ThreadPriorityPolicy=0).
// It is only used when ThreadPriorityPolicy=1 and requires root privilege.
-int os::java_to_os_priority[MaxPriority + 1] = {
+int os::java_to_os_priority[CriticalPriority + 1] = {
19, // 0 Entry should never be used
4, // 1 MinPriority
@@ -3398,7 +3398,9 @@
-3, // 8
-4, // 9 NearMaxPriority
- -5 // 10 MaxPriority
+ -5, // 10 MaxPriority
+
+ -5 // 11 CriticalPriority
};
static int prio_init() {
@@ -3413,6 +3415,9 @@
ThreadPriorityPolicy = 0;
}
}
+ if (UseCriticalJavaThreadPriority) {
+ os::java_to_os_priority[MaxPriority] = os::java_to_os_priority[CriticalPriority];
+ }
return 0;
}
--- a/hotspot/src/os/posix/launcher/java_md.c Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/os/posix/launcher/java_md.c Wed Jul 05 18:01:11 2017 +0200
@@ -701,6 +701,14 @@
char libjava[MAXPATHLEN];
if (GetApplicationHome(path, pathsize)) {
+
+ /* Is the JRE universal, i.e. no arch dir? */
+ sprintf(libjava, "%s/jre/lib/" JAVA_DLL, path);
+ if (access(libjava, F_OK) == 0) {
+ strcat(path, "/jre");
+ goto found;
+ }
+
/* Is JRE co-located with the application? */
sprintf(libjava, "%s/lib/%s/" JAVA_DLL, path, arch);
if (access(libjava, F_OK) == 0) {
@@ -734,7 +742,7 @@
ifn->GetDefaultJavaVMInitArgs = JNI_GetDefaultJavaVMInitArgs;
return JNI_TRUE;
#else
- Dl_info dlinfo;
+ Dl_info dlinfo;
void *libjvm;
if (_launcher_debug) {
--- a/hotspot/src/os/solaris/vm/osThread_solaris.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/os/solaris/vm/osThread_solaris.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -28,17 +28,17 @@
// This is embedded via include into the class OSThread
private:
-
- thread_t _thread_id; // Solaris thread id
- unsigned int _lwp_id; // lwp ID, only used with bound threads
- sigset_t _caller_sigmask; // Caller's signal mask
- bool _vm_created_thread; // true if the VM create this thread
- // false if primary thread or attached thread
+ thread_t _thread_id; // Solaris thread id
+ uint _lwp_id; // lwp ID, only used with bound threads
+ int _native_priority; // Saved native priority when starting
+ // a bound thread
+ sigset_t _caller_sigmask; // Caller's signal mask
+ bool _vm_created_thread; // true if the VM created this thread,
+ // false if primary thread or attached thread
public:
-
- thread_t thread_id() const { return _thread_id; }
-
- unsigned int lwp_id() const { return _lwp_id; }
+ thread_t thread_id() const { return _thread_id; }
+ uint lwp_id() const { return _lwp_id; }
+ int native_priority() const { return _native_priority; }
// Set and get state of _vm_created_thread flag
void set_vm_created() { _vm_created_thread = true; }
@@ -62,8 +62,9 @@
return true;
}
#endif
- void set_thread_id(thread_t id) { _thread_id = id; }
- void set_lwp_id(unsigned int id){ _lwp_id = id; }
+ void set_thread_id(thread_t id) { _thread_id = id; }
+ void set_lwp_id(uint id) { _lwp_id = id; }
+ void set_native_priority(int prio) { _native_priority = prio; }
// ***************************************************************
// interrupt support. interrupts (using signals) are used to get
--- a/hotspot/src/os/solaris/vm/os_solaris.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/os/solaris/vm/os_solaris.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -114,6 +114,7 @@
# include <sys/rtpriocntl.h>
# include <sys/tspriocntl.h>
# include <sys/iapriocntl.h>
+# include <sys/fxpriocntl.h>
# include <sys/loadavg.h>
# include <string.h>
# include <stdio.h>
@@ -129,8 +130,8 @@
#ifdef _GNU_SOURCE
// See bug #6514594
extern "C" int madvise(caddr_t, size_t, int);
-extern "C" int memcntl(caddr_t addr, size_t len, int cmd, caddr_t arg,
- int attr, int mask);
+extern "C" int memcntl(caddr_t addr, size_t len, int cmd, caddr_t arg,
+ int attr, int mask);
#endif //_GNU_SOURCE
/*
@@ -215,8 +216,9 @@
#define MaximumPriority 127
// Values for ThreadPriorityPolicy == 1
-int prio_policy1[MaxPriority+1] = { -99999, 0, 16, 32, 48, 64,
- 80, 96, 112, 124, 127 };
+int prio_policy1[CriticalPriority+1] = {
+ -99999, 0, 16, 32, 48, 64,
+ 80, 96, 112, 124, 127, 127 };
// System parameters used internally
static clock_t clock_tics_per_sec = 100;
@@ -1048,15 +1050,22 @@
}
// If the creator called set priority before we started,
- // we need to call set priority now that we have an lwp.
- // Get the priority from libthread and set the priority
- // for the new Solaris lwp.
+ // we need to call set_native_priority now that we have an lwp.
+ // We used to get the priority from thr_getprio (we called
+ // thr_setprio way back in create_thread) and pass it to
+ // set_native_priority, but Solaris scales the priority
+ // in java_to_os_priority, so when we read it back here,
+ // we pass trash to set_native_priority instead of what's
+ // in java_to_os_priority. So we save the native priority
+ // in the osThread and recall it here.
+
if ( osthr->thread_id() != -1 ) {
if ( UseThreadPriorities ) {
- thr_getprio(osthr->thread_id(), &prio);
+ int prio = osthr->native_priority();
if (ThreadPriorityVerbose) {
- tty->print_cr("Starting Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT ", setting priority: %d\n",
- osthr->thread_id(), osthr->lwp_id(), prio );
+ tty->print_cr("Starting Thread " INTPTR_FORMAT ", LWP is "
+ INTPTR_FORMAT ", setting priority: %d\n",
+ osthr->thread_id(), osthr->lwp_id(), prio);
}
os::set_native_priority(thread, prio);
}
@@ -1353,13 +1362,12 @@
// Remember that we created this thread so we can set priority on it
osthread->set_vm_created();
- // Set the default thread priority otherwise use NormalPriority
-
- if ( UseThreadPriorities ) {
- thr_setprio(tid, (DefaultThreadPriority == -1) ?
+ // Set the default thread priority. If using bound threads, setting
+ // lwp priority will be delayed until thread start.
+ set_native_priority(thread,
+ DefaultThreadPriority == -1 ?
java_to_os_priority[NormPriority] :
DefaultThreadPriority);
- }
// Initial thread state is INITIALIZED, not SUSPENDED
osthread->set_state(INITIALIZED);
@@ -3728,7 +3736,7 @@
} SchedInfo;
-static SchedInfo tsLimits, iaLimits, rtLimits;
+static SchedInfo tsLimits, iaLimits, rtLimits, fxLimits;
#ifdef ASSERT
static int ReadBackValidate = 1;
@@ -3739,6 +3747,8 @@
static int myCur = 0;
static bool priocntl_enable = false;
+static const int criticalPrio = 60; // FX/60 is critical thread class/priority on T4
+static int java_MaxPriority_to_os_priority = 0; // Saved mapping
// Call the version of priocntl suitable for all supported versions
// of Solaris. We need to call through this wrapper so that we can
@@ -3783,19 +3793,27 @@
if (os::Solaris::T2_libthread() || UseBoundThreads) {
// If ThreadPriorityPolicy is 1, switch tables
if (ThreadPriorityPolicy == 1) {
- for (i = 0 ; i < MaxPriority+1; i++)
+ for (i = 0 ; i < CriticalPriority+1; i++)
os::java_to_os_priority[i] = prio_policy1[i];
}
+ if (UseCriticalJavaThreadPriority) {
+ // MaxPriority always maps to the FX scheduling class and criticalPrio.
+ // See set_native_priority() and set_lwp_class_and_priority().
+ // Save original MaxPriority mapping in case attempt to
+ // use critical priority fails.
+ java_MaxPriority_to_os_priority = os::java_to_os_priority[MaxPriority];
+ // Set negative to distinguish from other priorities
+ os::java_to_os_priority[MaxPriority] = -criticalPrio;
+ }
}
// Not using Bound Threads, set to ThreadPolicy 1
else {
- for ( i = 0 ; i < MaxPriority+1; i++ ) {
+ for ( i = 0 ; i < CriticalPriority+1; i++ ) {
os::java_to_os_priority[i] = prio_policy1[i];
}
return 0;
}
-
// Get IDs for a set of well-known scheduling classes.
// TODO-FIXME: GETCLINFO returns the current # of classes in the
// the system. We should have a loop that iterates over the
@@ -3828,24 +3846,33 @@
rtLimits.maxPrio = ((rtinfo_t*)ClassInfo.pc_clinfo)->rt_maxpri;
rtLimits.minPrio = 0;
+ strcpy(ClassInfo.pc_clname, "FX");
+ ClassInfo.pc_cid = -1;
+ rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo);
+ if (rslt < 0) return errno;
+ assert(ClassInfo.pc_cid != -1, "cid for FX class is -1");
+ fxLimits.schedPolicy = ClassInfo.pc_cid;
+ fxLimits.maxPrio = ((fxinfo_t*)ClassInfo.pc_clinfo)->fx_maxupri;
+ fxLimits.minPrio = 0;
// Query our "current" scheduling class.
- // This will normally be IA,TS or, rarely, RT.
- memset (&ParmInfo, 0, sizeof(ParmInfo));
+ // This will normally be IA, TS or, rarely, FX or RT.
+ memset(&ParmInfo, 0, sizeof(ParmInfo));
ParmInfo.pc_cid = PC_CLNULL;
- rslt = (*priocntl_ptr) (PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo );
- if ( rslt < 0 ) return errno;
+ rslt = (*priocntl_ptr) (PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo);
+ if (rslt < 0) return errno;
myClass = ParmInfo.pc_cid;
// We now know our scheduling classId, get specific information
- // the class.
+ // about the class.
ClassInfo.pc_cid = myClass;
ClassInfo.pc_clname[0] = 0;
- rslt = (*priocntl_ptr) (PC_VERSION, (idtype)0, 0, PC_GETCLINFO, (caddr_t)&ClassInfo );
- if ( rslt < 0 ) return errno;
-
- if (ThreadPriorityVerbose)
- tty->print_cr ("lwp_priocntl_init: Class=%d(%s)...", myClass, ClassInfo.pc_clname);
+ rslt = (*priocntl_ptr) (PC_VERSION, (idtype)0, 0, PC_GETCLINFO, (caddr_t)&ClassInfo);
+ if (rslt < 0) return errno;
+
+ if (ThreadPriorityVerbose) {
+ tty->print_cr("lwp_priocntl_init: Class=%d(%s)...", myClass, ClassInfo.pc_clname);
+ }
memset(&ParmInfo, 0, sizeof(pcparms_t));
ParmInfo.pc_cid = PC_CLNULL;
@@ -3865,6 +3892,11 @@
myMin = tsLimits.minPrio;
myMax = tsLimits.maxPrio;
myMax = MIN2(myMax, (int)tsInfo->ts_uprilim); // clamp - restrict
+ } else if (ParmInfo.pc_cid == fxLimits.schedPolicy) {
+ fxparms_t *fxInfo = (fxparms_t*)ParmInfo.pc_clparms;
+ myMin = fxLimits.minPrio;
+ myMax = fxLimits.maxPrio;
+ myMax = MIN2(myMax, (int)fxInfo->fx_uprilim); // clamp - restrict
} else {
// No clue - punt
if (ThreadPriorityVerbose)
@@ -3872,8 +3904,9 @@
return EINVAL; // no clue, punt
}
- if (ThreadPriorityVerbose)
- tty->print_cr ("Thread priority Range: [%d..%d]\n", myMin, myMax);
+ if (ThreadPriorityVerbose) {
+ tty->print_cr ("Thread priority Range: [%d..%d]\n", myMin, myMax);
+ }
priocntl_enable = true; // Enable changing priorities
return 0;
@@ -3882,6 +3915,7 @@
#define IAPRI(x) ((iaparms_t *)((x).pc_clparms))
#define RTPRI(x) ((rtparms_t *)((x).pc_clparms))
#define TSPRI(x) ((tsparms_t *)((x).pc_clparms))
+#define FXPRI(x) ((fxparms_t *)((x).pc_clparms))
// scale_to_lwp_priority
@@ -3900,13 +3934,13 @@
}
-// set_lwp_priority
+// set_lwp_class_and_priority
//
-// Set the priority of the lwp. This call should only be made
-// when using bound threads (T2 threads are bound by default).
+// Set the class and priority of the lwp. This call should only
+// be made when using bound threads (T2 threads are bound by default).
//
-int set_lwp_priority (int ThreadID, int lwpid, int newPrio )
-{
+int set_lwp_class_and_priority(int ThreadID, int lwpid,
+ int newPrio, int new_class, bool scale) {
int rslt;
int Actual, Expected, prv;
pcparms_t ParmInfo; // for GET-SET
@@ -3927,19 +3961,20 @@
return EINVAL;
}
-
// If lwp hasn't started yet, just return
// the _start routine will call us again.
if ( lwpid <= 0 ) {
if (ThreadPriorityVerbose) {
- tty->print_cr ("deferring the set_lwp_priority of thread " INTPTR_FORMAT " to %d, lwpid not set",
+ tty->print_cr ("deferring the set_lwp_class_and_priority of thread "
+ INTPTR_FORMAT " to %d, lwpid not set",
ThreadID, newPrio);
}
return 0;
}
if (ThreadPriorityVerbose) {
- tty->print_cr ("set_lwp_priority(" INTPTR_FORMAT "@" INTPTR_FORMAT " %d) ",
+ tty->print_cr ("set_lwp_class_and_priority("
+ INTPTR_FORMAT "@" INTPTR_FORMAT " %d) ",
ThreadID, lwpid, newPrio);
}
@@ -3948,40 +3983,70 @@
rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ParmInfo);
if (rslt < 0) return errno;
- if (ParmInfo.pc_cid == rtLimits.schedPolicy) {
+ int cur_class = ParmInfo.pc_cid;
+ ParmInfo.pc_cid = (id_t)new_class;
+
+ if (new_class == rtLimits.schedPolicy) {
rtparms_t *rtInfo = (rtparms_t*)ParmInfo.pc_clparms;
- rtInfo->rt_pri = scale_to_lwp_priority (rtLimits.minPrio, rtLimits.maxPrio, newPrio);
+ rtInfo->rt_pri = scale ? scale_to_lwp_priority(rtLimits.minPrio,
+ rtLimits.maxPrio, newPrio)
+ : newPrio;
rtInfo->rt_tqsecs = RT_NOCHANGE;
rtInfo->rt_tqnsecs = RT_NOCHANGE;
if (ThreadPriorityVerbose) {
tty->print_cr("RT: %d->%d\n", newPrio, rtInfo->rt_pri);
}
- } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) {
- iaparms_t *iaInfo = (iaparms_t*)ParmInfo.pc_clparms;
- int maxClamped = MIN2(iaLimits.maxPrio, (int)iaInfo->ia_uprilim);
- iaInfo->ia_upri = scale_to_lwp_priority(iaLimits.minPrio, maxClamped, newPrio);
- iaInfo->ia_uprilim = IA_NOCHANGE;
+ } else if (new_class == iaLimits.schedPolicy) {
+ iaparms_t* iaInfo = (iaparms_t*)ParmInfo.pc_clparms;
+ int maxClamped = MIN2(iaLimits.maxPrio,
+ cur_class == new_class
+ ? (int)iaInfo->ia_uprilim : iaLimits.maxPrio);
+ iaInfo->ia_upri = scale ? scale_to_lwp_priority(iaLimits.minPrio,
+ maxClamped, newPrio)
+ : newPrio;
+ iaInfo->ia_uprilim = cur_class == new_class
+ ? IA_NOCHANGE : (pri_t)iaLimits.maxPrio;
iaInfo->ia_mode = IA_NOCHANGE;
+ iaInfo->ia_nice = cur_class == new_class ? IA_NOCHANGE : NZERO;
if (ThreadPriorityVerbose) {
- tty->print_cr ("IA: [%d...%d] %d->%d\n",
- iaLimits.minPrio, maxClamped, newPrio, iaInfo->ia_upri);
+ tty->print_cr("IA: [%d...%d] %d->%d\n",
+ iaLimits.minPrio, maxClamped, newPrio, iaInfo->ia_upri);
}
- } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) {
- tsparms_t *tsInfo = (tsparms_t*)ParmInfo.pc_clparms;
- int maxClamped = MIN2(tsLimits.maxPrio, (int)tsInfo->ts_uprilim);
- prv = tsInfo->ts_upri;
- tsInfo->ts_upri = scale_to_lwp_priority(tsLimits.minPrio, maxClamped, newPrio);
- tsInfo->ts_uprilim = IA_NOCHANGE;
+ } else if (new_class == tsLimits.schedPolicy) {
+ tsparms_t* tsInfo = (tsparms_t*)ParmInfo.pc_clparms;
+ int maxClamped = MIN2(tsLimits.maxPrio,
+ cur_class == new_class
+ ? (int)tsInfo->ts_uprilim : tsLimits.maxPrio);
+ tsInfo->ts_upri = scale ? scale_to_lwp_priority(tsLimits.minPrio,
+ maxClamped, newPrio)
+ : newPrio;
+ tsInfo->ts_uprilim = cur_class == new_class
+ ? TS_NOCHANGE : (pri_t)tsLimits.maxPrio;
if (ThreadPriorityVerbose) {
- tty->print_cr ("TS: %d [%d...%d] %d->%d\n",
- prv, tsLimits.minPrio, maxClamped, newPrio, tsInfo->ts_upri);
+ tty->print_cr("TS: [%d...%d] %d->%d\n",
+ tsLimits.minPrio, maxClamped, newPrio, tsInfo->ts_upri);
}
- if (prv == tsInfo->ts_upri) return 0;
+ } else if (new_class == fxLimits.schedPolicy) {
+ fxparms_t* fxInfo = (fxparms_t*)ParmInfo.pc_clparms;
+ int maxClamped = MIN2(fxLimits.maxPrio,
+ cur_class == new_class
+ ? (int)fxInfo->fx_uprilim : fxLimits.maxPrio);
+ fxInfo->fx_upri = scale ? scale_to_lwp_priority(fxLimits.minPrio,
+ maxClamped, newPrio)
+ : newPrio;
+ fxInfo->fx_uprilim = cur_class == new_class
+ ? FX_NOCHANGE : (pri_t)fxLimits.maxPrio;
+ fxInfo->fx_tqsecs = FX_NOCHANGE;
+ fxInfo->fx_tqnsecs = FX_NOCHANGE;
+ if (ThreadPriorityVerbose) {
+ tty->print_cr("FX: [%d...%d] %d->%d\n",
+ fxLimits.minPrio, maxClamped, newPrio, fxInfo->fx_upri);
+ }
} else {
- if ( ThreadPriorityVerbose ) {
- tty->print_cr ("Unknown scheduling class\n");
+ if (ThreadPriorityVerbose) {
+ tty->print_cr("Unknown new scheduling class %d\n", new_class);
}
- return EINVAL; // no clue, punt
+ return EINVAL; // no clue, punt
}
rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_SETPARMS, (caddr_t)&ParmInfo);
@@ -4016,16 +4081,20 @@
} else if (ParmInfo.pc_cid == tsLimits.schedPolicy) {
Actual = TSPRI(ReadBack)->ts_upri;
Expected = TSPRI(ParmInfo)->ts_upri;
+ } else if (ParmInfo.pc_cid == fxLimits.schedPolicy) {
+ Actual = FXPRI(ReadBack)->fx_upri;
+ Expected = FXPRI(ParmInfo)->fx_upri;
} else {
- if ( ThreadPriorityVerbose ) {
- tty->print_cr("set_lwp_priority: unexpected class in readback: %d\n", ParmInfo.pc_cid);
+ if (ThreadPriorityVerbose) {
+ tty->print_cr("set_lwp_class_and_priority: unexpected class in readback: %d\n",
+ ParmInfo.pc_cid);
}
}
if (Actual != Expected) {
- if ( ThreadPriorityVerbose ) {
- tty->print_cr ("set_lwp_priority(%d %d) Class=%d: actual=%d vs expected=%d\n",
- lwpid, newPrio, ReadBack.pc_cid, Actual, Expected);
+ if (ThreadPriorityVerbose) {
+ tty->print_cr ("set_lwp_class_and_priority(%d %d) Class=%d: actual=%d vs expected=%d\n",
+ lwpid, newPrio, ReadBack.pc_cid, Actual, Expected);
}
}
#endif
@@ -4033,8 +4102,6 @@
return 0;
}
-
-
// Solaris only gives access to 128 real priorities at a time,
// so we expand Java's ten to fill this range. This would be better
// if we dynamically adjusted relative priorities.
@@ -4055,8 +4122,7 @@
// which do not explicitly alter their thread priorities.
//
-
-int os::java_to_os_priority[MaxPriority + 1] = {
+int os::java_to_os_priority[CriticalPriority + 1] = {
-99999, // 0 Entry should never be used
0, // 1 MinPriority
@@ -4071,17 +4137,51 @@
127, // 8
127, // 9 NearMaxPriority
- 127 // 10 MaxPriority
+ 127, // 10 MaxPriority
+
+ -criticalPrio // 11 CriticalPriority
};
-
OSReturn os::set_native_priority(Thread* thread, int newpri) {
+ OSThread* osthread = thread->osthread();
+
+ // Save requested priority in case the thread hasn't been started
+ osthread->set_native_priority(newpri);
+
+ // Check for critical priority request
+ bool fxcritical = false;
+ if (newpri == -criticalPrio) {
+ fxcritical = true;
+ newpri = criticalPrio;
+ }
+
assert(newpri >= MinimumPriority && newpri <= MaximumPriority, "bad priority mapping");
- if ( !UseThreadPriorities ) return OS_OK;
- int status = thr_setprio(thread->osthread()->thread_id(), newpri);
- if ( os::Solaris::T2_libthread() || (UseBoundThreads && thread->osthread()->is_vm_created()) )
- status |= (set_lwp_priority (thread->osthread()->thread_id(),
- thread->osthread()->lwp_id(), newpri ));
+ if (!UseThreadPriorities) return OS_OK;
+
+ int status = 0;
+
+ if (!fxcritical) {
+ // Use thr_setprio only if we have a priority that thr_setprio understands
+ status = thr_setprio(thread->osthread()->thread_id(), newpri);
+ }
+
+ if (os::Solaris::T2_libthread() ||
+ (UseBoundThreads && osthread->is_vm_created())) {
+ int lwp_status =
+ set_lwp_class_and_priority(osthread->thread_id(),
+ 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);
+ }
+ status |= lwp_status;
+ }
return (status == 0) ? OS_OK : OS_ERR;
}
--- a/hotspot/src/os/windows/vm/os_windows.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/os/windows/vm/os_windows.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -3296,7 +3296,7 @@
// so we compress Java's ten down to seven. It would be better
// if we dynamically adjusted relative priorities.
-int os::java_to_os_priority[MaxPriority + 1] = {
+int os::java_to_os_priority[CriticalPriority + 1] = {
THREAD_PRIORITY_IDLE, // 0 Entry should never be used
THREAD_PRIORITY_LOWEST, // 1 MinPriority
THREAD_PRIORITY_LOWEST, // 2
@@ -3307,10 +3307,11 @@
THREAD_PRIORITY_ABOVE_NORMAL, // 7
THREAD_PRIORITY_ABOVE_NORMAL, // 8
THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority
- THREAD_PRIORITY_HIGHEST // 10 MaxPriority
+ THREAD_PRIORITY_HIGHEST, // 10 MaxPriority
+ THREAD_PRIORITY_HIGHEST // 11 CriticalPriority
};
-int prio_policy1[MaxPriority + 1] = {
+int prio_policy1[CriticalPriority + 1] = {
THREAD_PRIORITY_IDLE, // 0 Entry should never be used
THREAD_PRIORITY_LOWEST, // 1 MinPriority
THREAD_PRIORITY_LOWEST, // 2
@@ -3321,17 +3322,21 @@
THREAD_PRIORITY_ABOVE_NORMAL, // 7
THREAD_PRIORITY_HIGHEST, // 8
THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority
- THREAD_PRIORITY_TIME_CRITICAL // 10 MaxPriority
+ THREAD_PRIORITY_TIME_CRITICAL, // 10 MaxPriority
+ THREAD_PRIORITY_TIME_CRITICAL // 11 CriticalPriority
};
static int prio_init() {
// If ThreadPriorityPolicy is 1, switch tables
if (ThreadPriorityPolicy == 1) {
int i;
- for (i = 0; i < MaxPriority + 1; i++) {
+ for (i = 0; i < CriticalPriority + 1; i++) {
os::java_to_os_priority[i] = prio_policy1[i];
}
}
+ if (UseCriticalJavaThreadPriority) {
+ os::java_to_os_priority[MaxPriority] = os::java_to_os_priority[CriticalPriority] ;
+ }
return 0;
}
--- a/hotspot/src/share/vm/c1/c1_LIR.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/c1/c1_LIR.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1354,9 +1354,10 @@
CodeStub* _stub; // if this is a branch to a stub, this is the stub
public:
- LIR_OpBranch(LIR_Condition cond, Label* lbl)
+ LIR_OpBranch(LIR_Condition cond, BasicType type, Label* lbl)
: LIR_Op(lir_branch, LIR_OprFact::illegalOpr, (CodeEmitInfo*) NULL)
, _cond(cond)
+ , _type(type)
, _label(lbl)
, _block(NULL)
, _ublock(NULL)
@@ -2053,7 +2054,7 @@
void jump(CodeStub* stub) {
append(new LIR_OpBranch(lir_cond_always, T_ILLEGAL, stub));
}
- void branch(LIR_Condition cond, Label* lbl) { append(new LIR_OpBranch(cond, lbl)); }
+ void branch(LIR_Condition cond, BasicType type, Label* lbl) { append(new LIR_OpBranch(cond, type, lbl)); }
void branch(LIR_Condition cond, BasicType type, BlockBegin* block) {
assert(type != T_FLOAT && type != T_DOUBLE, "no fp comparisons");
append(new LIR_OpBranch(cond, type, block));
--- a/hotspot/src/share/vm/c1/c1_LIRGenerator.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/c1/c1_LIRGenerator.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -2350,7 +2350,7 @@
} else {
LabelObj* L = new LabelObj();
__ cmp(lir_cond_less, value, low_key);
- __ branch(lir_cond_less, L->label());
+ __ branch(lir_cond_less, T_INT, L->label());
__ cmp(lir_cond_lessEqual, value, high_key);
__ branch(lir_cond_lessEqual, T_INT, dest);
__ branch_destination(L->label());
--- a/hotspot/src/share/vm/c1/c1_Runtime1.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/c1/c1_Runtime1.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -413,8 +413,9 @@
}
bci = branch_bci + offset;
}
-
+ assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending");
osr_nm = CompilationPolicy::policy()->event(enclosing_method, method, branch_bci, bci, level, nm, THREAD);
+ assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions");
return osr_nm;
}
--- a/hotspot/src/share/vm/classfile/javaClasses.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/classfile/javaClasses.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1347,7 +1347,13 @@
return _backtrace();
}
- inline void push(methodOop method, short bci, TRAPS) {
+ inline void push(methodOop method, int bci, TRAPS) {
+ // Smear the -1 bci to 0 since the array only holds unsigned
+ // shorts. The later line number lookup would just smear the -1
+ // to a 0 even if it could be recorded.
+ if (bci == SynchronizationEntryBCI) bci = 0;
+ assert(bci == (jushort)bci, "doesn't fit");
+
if (_index >= trace_chunk_size) {
methodHandle mhandle(THREAD, method);
expand(CHECK);
@@ -1574,8 +1580,13 @@
int chunk_count = 0;
for (;!st.at_end(); st.next()) {
- // add element
- bcis->ushort_at_put(chunk_count, st.bci());
+ // Add entry and smear the -1 bci to 0 since the array only holds
+ // unsigned shorts. The later line number lookup would just smear
+ // the -1 to a 0 even if it could be recorded.
+ int bci = st.bci();
+ if (bci == SynchronizationEntryBCI) bci = 0;
+ assert(bci == (jushort)bci, "doesn't fit");
+ bcis->ushort_at_put(chunk_count, bci);
methods->obj_at_put(chunk_count, st.method());
chunk_count++;
--- a/hotspot/src/share/vm/compiler/compileBroker.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/compiler/compileBroker.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2012, 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
@@ -855,23 +855,23 @@
// Note that this only sets the JavaThread _priority field, which by
// definition is limited to Java priorities and not OS priorities.
// The os-priority is set in the CompilerThread startup code itself
+
java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
- // CLEANUP PRIORITIES: This -if- statement hids a bug whereby the compiler
- // threads never have their OS priority set. The assumption here is to
- // enable the Performance group to do flag tuning, figure out a suitable
- // CompilerThreadPriority, and then remove this 'if' statement (and
- // comment) and unconditionally set the priority.
+
+ // Note that we cannot call os::set_priority because it expects Java
+ // priorities and we are *explicitly* using OS priorities so that it's
+ // possible to set the compiler thread priority higher than any Java
+ // thread.
- // Compiler Threads should be at the highest Priority
- if ( CompilerThreadPriority != -1 )
- os::set_native_priority( compiler_thread, CompilerThreadPriority );
- else
- os::set_native_priority( compiler_thread, os::java_to_os_priority[NearMaxPriority]);
-
- // Note that I cannot call os::set_priority because it expects Java
- // priorities and I am *explicitly* using OS priorities so that it's
- // possible to set the compiler thread priority higher than any Java
- // thread.
+ int native_prio = CompilerThreadPriority;
+ if (native_prio == -1) {
+ if (UseCriticalCompilerThreadPriority) {
+ native_prio = os::java_to_os_priority[CriticalPriority];
+ } else {
+ native_prio = os::java_to_os_priority[NearMaxPriority];
+ }
+ }
+ os::set_native_priority(compiler_thread, native_prio);
java_lang_Thread::set_daemon(thread_oop());
@@ -879,6 +879,7 @@
Threads::add(compiler_thread);
Thread::start(compiler_thread);
}
+
// Let go of Threads_lock before yielding
os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS)
@@ -961,7 +962,7 @@
methodHandle hot_method,
int hot_count,
const char* comment,
- TRAPS) {
+ Thread* thread) {
// do nothing if compiler thread(s) is not available
if (!_initialized ) {
return;
@@ -1037,7 +1038,7 @@
// Acquire our lock.
{
- MutexLocker locker(queue->lock(), THREAD);
+ MutexLocker locker(queue->lock(), thread);
// Make sure the method has not slipped into the queues since
// last we checked; note that those checks were "fast bail-outs".
@@ -1119,7 +1120,7 @@
nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
int comp_level,
methodHandle hot_method, int hot_count,
- const char* comment, TRAPS) {
+ const char* comment, Thread* THREAD) {
// make sure arguments make sense
assert(method->method_holder()->klass_part()->oop_is_instance(), "not an instance method");
assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range");
@@ -1173,10 +1174,10 @@
assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
// some prerequisites that are compiler specific
if (compiler(comp_level)->is_c2() || compiler(comp_level)->is_shark()) {
- method->constants()->resolve_string_constants(CHECK_0);
+ method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL);
// Resolve all classes seen in the signature of the method
// we are compiling.
- methodOopDesc::load_signature_classes(method, CHECK_0);
+ methodOopDesc::load_signature_classes(method, CHECK_AND_CLEAR_NULL);
}
// If the method is native, do the lookup in the thread requesting
@@ -1230,7 +1231,7 @@
return NULL;
}
} else {
- compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0);
+ compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD);
}
// return requested nmethod
--- a/hotspot/src/share/vm/compiler/compileBroker.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/compiler/compileBroker.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -333,7 +333,7 @@
methodHandle hot_method,
int hot_count,
const char* comment,
- TRAPS);
+ Thread* thread);
static CompileQueue* compile_queue(int comp_level) {
if (is_c2_compile(comp_level)) return _c2_method_queue;
if (is_c1_compile(comp_level)) return _c1_method_queue;
@@ -363,7 +363,7 @@
int comp_level,
methodHandle hot_method,
int hot_count,
- const char* comment, TRAPS);
+ const char* comment, Thread* thread);
static void compiler_thread_loop();
--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2012, 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
@@ -75,10 +75,25 @@
set_name("Concurrent Mark-Sweep GC Thread");
if (os::create_thread(this, os::cgc_thread)) {
- // XXX: need to set this to low priority
- // unless "agressive mode" set; priority
- // should be just less than that of VMThread.
- os::set_priority(this, NearMaxPriority);
+ // An old comment here said: "Priority should be just less
+ // than that of VMThread". Since the VMThread runs at
+ // NearMaxPriority, the old comment was inaccurate, but
+ // changing the default priority to NearMaxPriority-1
+ // could change current behavior, so the default of
+ // NearMaxPriority stays in place.
+ //
+ // Note that there's a possibility of the VMThread
+ // starving if UseCriticalCMSThreadPriority is on.
+ // That won't happen on Solaris for various reasons,
+ // but may well happen on non-Solaris platforms.
+ int native_prio;
+ if (UseCriticalCMSThreadPriority) {
+ native_prio = os::java_to_os_priority[CriticalPriority];
+ } else {
+ native_prio = os::java_to_os_priority[NearMaxPriority];
+ }
+ os::set_native_priority(this, native_prio);
+
if (!DisableStartThread) {
os::start_thread(this);
}
--- a/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -42,8 +42,7 @@
#include "runtime/handles.inline.hpp"
#include "runtime/java.hpp"
-//
-// CMS Bit Map Wrapper
+// Concurrent marking bit map wrapper
CMBitMapRO::CMBitMapRO(ReservedSpace rs, int shifter) :
_bm((uintptr_t*)NULL,0),
@@ -53,13 +52,13 @@
ReservedSpace brs(ReservedSpace::allocation_align_size_up(
(_bmWordSize >> (_shifter + LogBitsPerByte)) + 1));
- guarantee(brs.is_reserved(), "couldn't allocate CMS bit map");
+ guarantee(brs.is_reserved(), "couldn't allocate concurrent marking bit map");
// For now we'll just commit all of the bit map up fromt.
// Later on we'll try to be more parsimonious with swap.
guarantee(_virtual_space.initialize(brs, brs.size()),
- "couldn't reseve backing store for CMS bit map");
+ "couldn't reseve backing store for concurrent marking bit map");
assert(_virtual_space.committed_size() == brs.size(),
- "didn't reserve backing store for all of CMS bit map?");
+ "didn't reserve backing store for all of concurrent marking bit map?");
_bm.set_map((uintptr_t*)_virtual_space.low());
assert(_virtual_space.committed_size() << (_shifter + LogBitsPerByte) >=
_bmWordSize, "inconsistency in bit map sizing");
@@ -104,17 +103,6 @@
return (int) (diff >> _shifter);
}
-bool CMBitMapRO::iterate(BitMapClosure* cl, MemRegion mr) {
- HeapWord* left = MAX2(_bmStartWord, mr.start());
- HeapWord* right = MIN2(_bmStartWord + _bmWordSize, mr.end());
- if (right > left) {
- // Right-open interval [leftOffset, rightOffset).
- return _bm.iterate(cl, heapWordToOffset(left), heapWordToOffset(right));
- } else {
- return true;
- }
-}
-
void CMBitMapRO::mostly_disjoint_range_union(BitMap* from_bitmap,
size_t from_start_index,
HeapWord* to_start_word,
@@ -431,8 +419,6 @@
assert(newOop->is_oop(), "Expected an oop");
assert(bm == NULL || bm->isMarked((HeapWord*)newOop),
"only grey objects on this stack");
- // iterate over the oops in this oop, marking and pushing
- // the ones in CMS generation.
newOop->oop_iterate(cl);
if (yield_after && _cm->do_yield_check()) {
res = false;
@@ -474,6 +460,84 @@
&& !nextMarkBitMap()->isMarked((HeapWord*)obj)));
}
+CMRootRegions::CMRootRegions() :
+ _young_list(NULL), _cm(NULL), _scan_in_progress(false),
+ _should_abort(false), _next_survivor(NULL) { }
+
+void CMRootRegions::init(G1CollectedHeap* g1h, ConcurrentMark* cm) {
+ _young_list = g1h->young_list();
+ _cm = cm;
+}
+
+void CMRootRegions::prepare_for_scan() {
+ assert(!scan_in_progress(), "pre-condition");
+
+ // Currently, only survivors can be root regions.
+ assert(_next_survivor == NULL, "pre-condition");
+ _next_survivor = _young_list->first_survivor_region();
+ _scan_in_progress = (_next_survivor != NULL);
+ _should_abort = false;
+}
+
+HeapRegion* CMRootRegions::claim_next() {
+ if (_should_abort) {
+ // If someone has set the should_abort flag, we return NULL to
+ // force the caller to bail out of their loop.
+ return NULL;
+ }
+
+ // Currently, only survivors can be root regions.
+ HeapRegion* res = _next_survivor;
+ if (res != NULL) {
+ MutexLockerEx x(RootRegionScan_lock, Mutex::_no_safepoint_check_flag);
+ // Read it again in case it changed while we were waiting for the lock.
+ res = _next_survivor;
+ if (res != NULL) {
+ if (res == _young_list->last_survivor_region()) {
+ // We just claimed the last survivor so store NULL to indicate
+ // that we're done.
+ _next_survivor = NULL;
+ } else {
+ _next_survivor = res->get_next_young_region();
+ }
+ } else {
+ // Someone else claimed the last survivor while we were trying
+ // to take the lock so nothing else to do.
+ }
+ }
+ assert(res == NULL || res->is_survivor(), "post-condition");
+
+ return res;
+}
+
+void CMRootRegions::scan_finished() {
+ assert(scan_in_progress(), "pre-condition");
+
+ // Currently, only survivors can be root regions.
+ if (!_should_abort) {
+ assert(_next_survivor == NULL, "we should have claimed all survivors");
+ }
+ _next_survivor = NULL;
+
+ {
+ MutexLockerEx x(RootRegionScan_lock, Mutex::_no_safepoint_check_flag);
+ _scan_in_progress = false;
+ RootRegionScan_lock->notify_all();
+ }
+}
+
+bool CMRootRegions::wait_until_scan_finished() {
+ if (!scan_in_progress()) return false;
+
+ {
+ MutexLockerEx x(RootRegionScan_lock, Mutex::_no_safepoint_check_flag);
+ while (scan_in_progress()) {
+ RootRegionScan_lock->wait(Mutex::_no_safepoint_check_flag);
+ }
+ }
+ return true;
+}
+
#ifdef _MSC_VER // the use of 'this' below gets a warning, make it go away
#pragma warning( disable:4355 ) // 'this' : used in base member initializer list
#endif // _MSC_VER
@@ -498,6 +562,7 @@
_card_bm((rs.size() + CardTableModRefBS::card_size - 1) >>
CardTableModRefBS::card_shift,
false /* in_resource_area*/),
+
_prevMarkBitMap(&_markBitMap1),
_nextMarkBitMap(&_markBitMap2),
_at_least_one_mark_complete(false),
@@ -526,7 +591,11 @@
_cleanup_times(),
_total_counting_time(0.0),
_total_rs_scrub_time(0.0),
- _parallel_workers(NULL) {
+
+ _parallel_workers(NULL),
+
+ _count_card_bitmaps(NULL),
+ _count_marked_bytes(NULL) {
CMVerboseLevel verbose_level = (CMVerboseLevel) G1MarkingVerboseLevel;
if (verbose_level < no_verbose) {
verbose_level = no_verbose;
@@ -557,9 +626,16 @@
SATBMarkQueueSet& satb_qs = JavaThread::satb_mark_queue_set();
satb_qs.set_buffer_size(G1SATBBufferSize);
+ _root_regions.init(_g1h, this);
+
_tasks = NEW_C_HEAP_ARRAY(CMTask*, _max_task_num);
_accum_task_vtime = NEW_C_HEAP_ARRAY(double, _max_task_num);
+ _count_card_bitmaps = NEW_C_HEAP_ARRAY(BitMap, _max_task_num);
+ _count_marked_bytes = NEW_C_HEAP_ARRAY(size_t*, _max_task_num);
+
+ BitMap::idx_t card_bm_size = _card_bm.size();
+
// so that the assertion in MarkingTaskQueue::task_queue doesn't fail
_active_tasks = _max_task_num;
for (int i = 0; i < (int) _max_task_num; ++i) {
@@ -567,10 +643,26 @@
task_queue->initialize();
_task_queues->register_queue(i, task_queue);
- _tasks[i] = new CMTask(i, this, task_queue, _task_queues);
+ _count_card_bitmaps[i] = BitMap(card_bm_size, false);
+ _count_marked_bytes[i] = NEW_C_HEAP_ARRAY(size_t, max_regions);
+
+ _tasks[i] = new CMTask(i, this,
+ _count_marked_bytes[i],
+ &_count_card_bitmaps[i],
+ task_queue, _task_queues);
+
_accum_task_vtime[i] = 0.0;
}
+ // Calculate the card number for the bottom of the heap. Used
+ // in biasing indexes into the accounting card bitmaps.
+ _heap_bottom_card_num =
+ intptr_t(uintptr_t(_g1h->reserved_region().start()) >>
+ CardTableModRefBS::card_shift);
+
+ // Clear all the liveness counting data
+ clear_all_count_data();
+
if (ConcGCThreads > ParallelGCThreads) {
vm_exit_during_initialization("Can't have more ConcGCThreads "
"than ParallelGCThreads.");
@@ -750,11 +842,6 @@
ShouldNotReachHere();
}
-// This closure is used to mark refs into the g1 generation
-// from external roots in the CMS bit map.
-// Called at the first checkpoint.
-//
-
void ConcurrentMark::clearNextBitmap() {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
G1CollectorPolicy* g1p = g1h->g1_policy();
@@ -794,6 +881,9 @@
assert(!g1h->mark_in_progress(), "invariant");
}
+ // Clear the liveness counting data
+ clear_all_count_data();
+
// Repeat the asserts from above.
guarantee(cmThread()->during_cycle(), "invariant");
guarantee(!g1h->mark_in_progress(), "invariant");
@@ -854,6 +944,8 @@
satb_mq_set.set_active_all_threads(true, /* new active value */
false /* expected_active */);
+ _root_regions.prepare_for_scan();
+
// update_g1_committed() will be called at the end of an evac pause
// when marking is on. So, it's also called at the end of the
// initial-mark pause to update the heap end, if the heap expands
@@ -1147,6 +1239,69 @@
return 0;
}
+void ConcurrentMark::scanRootRegion(HeapRegion* hr, uint worker_id) {
+ // Currently, only survivors can be root regions.
+ assert(hr->next_top_at_mark_start() == hr->bottom(), "invariant");
+ G1RootRegionScanClosure cl(_g1h, this, worker_id);
+
+ const uintx interval = PrefetchScanIntervalInBytes;
+ HeapWord* curr = hr->bottom();
+ const HeapWord* end = hr->top();
+ while (curr < end) {
+ Prefetch::read(curr, interval);
+ oop obj = oop(curr);
+ int size = obj->oop_iterate(&cl);
+ assert(size == obj->size(), "sanity");
+ curr += size;
+ }
+}
+
+class CMRootRegionScanTask : public AbstractGangTask {
+private:
+ ConcurrentMark* _cm;
+
+public:
+ CMRootRegionScanTask(ConcurrentMark* cm) :
+ AbstractGangTask("Root Region Scan"), _cm(cm) { }
+
+ void work(uint worker_id) {
+ assert(Thread::current()->is_ConcurrentGC_thread(),
+ "this should only be done by a conc GC thread");
+
+ CMRootRegions* root_regions = _cm->root_regions();
+ HeapRegion* hr = root_regions->claim_next();
+ while (hr != NULL) {
+ _cm->scanRootRegion(hr, worker_id);
+ hr = root_regions->claim_next();
+ }
+ }
+};
+
+void ConcurrentMark::scanRootRegions() {
+ // scan_in_progress() will have been set to true only if there was
+ // at least one root region to scan. So, if it's false, we
+ // should not attempt to do any further work.
+ if (root_regions()->scan_in_progress()) {
+ _parallel_marking_threads = calc_parallel_marking_threads();
+ assert(parallel_marking_threads() <= max_parallel_marking_threads(),
+ "Maximum number of marking threads exceeded");
+ uint active_workers = MAX2(1U, parallel_marking_threads());
+
+ CMRootRegionScanTask task(this);
+ if (parallel_marking_threads() > 0) {
+ _parallel_workers->set_active_workers((int) active_workers);
+ _parallel_workers->run_task(&task);
+ } else {
+ task.work(0);
+ }
+
+ // It's possible that has_aborted() is true here without actually
+ // aborting the survivor scan earlier. This is OK as it's
+ // mainly used for sanity checking.
+ root_regions()->scan_finished();
+ }
+}
+
void ConcurrentMark::markFromRoots() {
// we might be tempted to assert that:
// assert(asynch == !SafepointSynchronize::is_at_safepoint(),
@@ -1225,6 +1380,10 @@
gclog_or_tty->print_cr("\nRemark led to restart for overflow.");
}
} else {
+ // Aggregate the per-task counting data that we have accumulated
+ // while marking.
+ aggregate_count_data();
+
SATBMarkQueueSet& satb_mq_set = JavaThread::satb_mark_queue_set();
// We're done with marking.
// This is the end of the marking cycle, we're expected all
@@ -1262,48 +1421,41 @@
g1p->record_concurrent_mark_remark_end();
}
-#define CARD_BM_TEST_MODE 0
-
+// Used to calculate the # live objects per region
+// for verification purposes
class CalcLiveObjectsClosure: public HeapRegionClosure {
CMBitMapRO* _bm;
ConcurrentMark* _cm;
- bool _changed;
- bool _yield;
- size_t _words_done;
- size_t _tot_live;
- size_t _tot_used;
- size_t _regions_done;
- double _start_vtime_sec;
-
BitMap* _region_bm;
BitMap* _card_bm;
+
+ // Debugging
+ size_t _tot_words_done;
+ size_t _tot_live;
+ size_t _tot_used;
+
+ size_t _region_marked_bytes;
+
intptr_t _bottom_card_num;
- bool _final;
void mark_card_num_range(intptr_t start_card_num, intptr_t last_card_num) {
- for (intptr_t i = start_card_num; i <= last_card_num; i++) {
-#if CARD_BM_TEST_MODE
- guarantee(_card_bm->at(i - _bottom_card_num), "Should already be set.");
-#else
- _card_bm->par_at_put(i - _bottom_card_num, 1);
-#endif
+ assert(start_card_num <= last_card_num, "sanity");
+ BitMap::idx_t start_idx = start_card_num - _bottom_card_num;
+ BitMap::idx_t last_idx = last_card_num - _bottom_card_num;
+
+ for (BitMap::idx_t i = start_idx; i <= last_idx; i += 1) {
+ _card_bm->par_at_put(i, 1);
}
}
public:
- CalcLiveObjectsClosure(bool final,
- CMBitMapRO *bm, ConcurrentMark *cm,
+ CalcLiveObjectsClosure(CMBitMapRO *bm, ConcurrentMark *cm,
BitMap* region_bm, BitMap* card_bm) :
- _bm(bm), _cm(cm), _changed(false), _yield(true),
- _words_done(0), _tot_live(0), _tot_used(0),
- _region_bm(region_bm), _card_bm(card_bm),_final(final),
- _regions_done(0), _start_vtime_sec(0.0)
- {
- _bottom_card_num =
- intptr_t(uintptr_t(G1CollectedHeap::heap()->reserved_region().start()) >>
- CardTableModRefBS::card_shift);
- }
+ _bm(bm), _cm(cm), _region_bm(region_bm), _card_bm(card_bm),
+ _region_marked_bytes(0), _tot_words_done(0),
+ _tot_live(0), _tot_used(0),
+ _bottom_card_num(cm->heap_bottom_card_num()) { }
// It takes a region that's not empty (i.e., it has at least one
// live object in it and sets its corresponding bit on the region
@@ -1319,29 +1471,16 @@
_region_bm->par_at_put((BitMap::idx_t) index, true);
} else {
// Starts humongous case: calculate how many regions are part of
- // this humongous region and then set the bit range. It might
- // have been a bit more efficient to look at the object that
- // spans these humongous regions to calculate their number from
- // the object's size. However, it's a good idea to calculate
- // this based on the metadata itself, and not the region
- // contents, so that this code is not aware of what goes into
- // the humongous regions (in case this changes in the future).
+ // this humongous region and then set the bit range.
G1CollectedHeap* g1h = G1CollectedHeap::heap();
- size_t end_index = index + 1;
- while (end_index < g1h->n_regions()) {
- HeapRegion* chr = g1h->region_at(end_index);
- if (!chr->continuesHumongous()) break;
- end_index += 1;
- }
+ HeapRegion *last_hr = g1h->heap_region_containing_raw(hr->end() - 1);
+ size_t end_index = last_hr->hrs_index() + 1;
_region_bm->par_at_put_range((BitMap::idx_t) index,
(BitMap::idx_t) end_index, true);
}
}
bool doHeapRegion(HeapRegion* hr) {
- if (!_final && _regions_done == 0) {
- _start_vtime_sec = os::elapsedVTime();
- }
if (hr->continuesHumongous()) {
// We will ignore these here and process them when their
@@ -1355,48 +1494,41 @@
}
HeapWord* nextTop = hr->next_top_at_mark_start();
- HeapWord* start = hr->top_at_conc_mark_count();
- assert(hr->bottom() <= start && start <= hr->end() &&
- hr->bottom() <= nextTop && nextTop <= hr->end() &&
- start <= nextTop,
- "Preconditions.");
- // Otherwise, record the number of word's we'll examine.
+ HeapWord* start = hr->bottom();
+
+ assert(start <= hr->end() && start <= nextTop && nextTop <= hr->end(),
+ err_msg("Preconditions not met - "
+ "start: "PTR_FORMAT", nextTop: "PTR_FORMAT", end: "PTR_FORMAT,
+ start, nextTop, hr->end()));
+
+ // Record the number of word's we'll examine.
size_t words_done = (nextTop - start);
+
// Find the first marked object at or after "start".
start = _bm->getNextMarkedWordAddress(start, nextTop);
+
size_t marked_bytes = 0;
// Below, the term "card num" means the result of shifting an address
// by the card shift -- address 0 corresponds to card number 0. One
// must subtract the card num of the bottom of the heap to obtain a
// card table index.
+
// The first card num of the sequence of live cards currently being
// constructed. -1 ==> no sequence.
intptr_t start_card_num = -1;
+
// The last card num of the sequence of live cards currently being
// constructed. -1 ==> no sequence.
intptr_t last_card_num = -1;
while (start < nextTop) {
- if (_yield && _cm->do_yield_check()) {
- // We yielded. It might be for a full collection, in which case
- // all bets are off; terminate the traversal.
- if (_cm->has_aborted()) {
- _changed = false;
- return true;
- } else {
- // Otherwise, it might be a collection pause, and the region
- // we're looking at might be in the collection set. We'll
- // abandon this region.
- return false;
- }
- }
oop obj = oop(start);
int obj_sz = obj->size();
+
// The card num of the start of the current object.
intptr_t obj_card_num =
intptr_t(uintptr_t(start) >> CardTableModRefBS::card_shift);
-
HeapWord* obj_last = start + obj_sz - 1;
intptr_t obj_last_card_num =
intptr_t(uintptr_t(obj_last) >> CardTableModRefBS::card_shift);
@@ -1414,110 +1546,404 @@
start_card_num = obj_card_num;
}
}
-#if CARD_BM_TEST_MODE
- /*
- gclog_or_tty->print_cr("Setting bits from %d/%d.",
- obj_card_num - _bottom_card_num,
- obj_last_card_num - _bottom_card_num);
- */
- for (intptr_t j = obj_card_num; j <= obj_last_card_num; j++) {
- _card_bm->par_at_put(j - _bottom_card_num, 1);
- }
-#endif
}
// In any case, we set the last card num.
last_card_num = obj_last_card_num;
marked_bytes += (size_t)obj_sz * HeapWordSize;
+
// Find the next marked object after this one.
start = _bm->getNextMarkedWordAddress(start + 1, nextTop);
- _changed = true;
}
+
// Handle the last range, if any.
if (start_card_num != -1) {
mark_card_num_range(start_card_num, last_card_num);
}
- if (_final) {
- // Mark the allocated-since-marking portion...
- HeapWord* tp = hr->top();
- if (nextTop < tp) {
- start_card_num =
- intptr_t(uintptr_t(nextTop) >> CardTableModRefBS::card_shift);
- last_card_num =
- intptr_t(uintptr_t(tp) >> CardTableModRefBS::card_shift);
- mark_card_num_range(start_card_num, last_card_num);
- // This definitely means the region has live objects.
- set_bit_for_region(hr);
- }
+
+ // Mark the allocated-since-marking portion...
+ HeapWord* top = hr->top();
+ if (nextTop < top) {
+ start_card_num = intptr_t(uintptr_t(nextTop) >> CardTableModRefBS::card_shift);
+ last_card_num = intptr_t(uintptr_t(top) >> CardTableModRefBS::card_shift);
+
+ mark_card_num_range(start_card_num, last_card_num);
+
+ // This definitely means the region has live objects.
+ set_bit_for_region(hr);
}
- hr->add_to_marked_bytes(marked_bytes);
// Update the live region bitmap.
if (marked_bytes > 0) {
set_bit_for_region(hr);
}
- hr->set_top_at_conc_mark_count(nextTop);
+
+ // Set the marked bytes for the current region so that
+ // it can be queried by a calling verificiation routine
+ _region_marked_bytes = marked_bytes;
+
_tot_live += hr->next_live_bytes();
_tot_used += hr->used();
- _words_done = words_done;
-
- if (!_final) {
- ++_regions_done;
- if (_regions_done % 10 == 0) {
- double end_vtime_sec = os::elapsedVTime();
- double elapsed_vtime_sec = end_vtime_sec - _start_vtime_sec;
- if (elapsed_vtime_sec > (10.0 / 1000.0)) {
- jlong sleep_time_ms =
- (jlong) (elapsed_vtime_sec * _cm->cleanup_sleep_factor() * 1000.0);
- os::sleep(Thread::current(), sleep_time_ms, false);
- _start_vtime_sec = end_vtime_sec;
- }
- }
- }
+ _tot_words_done = words_done;
return false;
}
- bool changed() { return _changed; }
- void reset() { _changed = false; _words_done = 0; }
- void no_yield() { _yield = false; }
- size_t words_done() { return _words_done; }
- size_t tot_live() { return _tot_live; }
- size_t tot_used() { return _tot_used; }
+ size_t region_marked_bytes() const { return _region_marked_bytes; }
+
+ // Debugging
+ size_t tot_words_done() const { return _tot_words_done; }
+ size_t tot_live() const { return _tot_live; }
+ size_t tot_used() const { return _tot_used; }
+};
+
+// Heap region closure used for verifying the counting data
+// that was accumulated concurrently and aggregated during
+// the remark pause. This closure is applied to the heap
+// regions during the STW cleanup pause.
+
+class VerifyLiveObjectDataHRClosure: public HeapRegionClosure {
+ ConcurrentMark* _cm;
+ CalcLiveObjectsClosure _calc_cl;
+ BitMap* _region_bm; // Region BM to be verified
+ BitMap* _card_bm; // Card BM to be verified
+ bool _verbose; // verbose output?
+
+ BitMap* _exp_region_bm; // Expected Region BM values
+ BitMap* _exp_card_bm; // Expected card BM values
+
+ int _failures;
+
+public:
+ VerifyLiveObjectDataHRClosure(ConcurrentMark* cm,
+ BitMap* region_bm,
+ BitMap* card_bm,
+ BitMap* exp_region_bm,
+ BitMap* exp_card_bm,
+ bool verbose) :
+ _cm(cm),
+ _calc_cl(_cm->nextMarkBitMap(), _cm, exp_region_bm, exp_card_bm),
+ _region_bm(region_bm), _card_bm(card_bm), _verbose(verbose),
+ _exp_region_bm(exp_region_bm), _exp_card_bm(exp_card_bm),
+ _failures(0) { }
+
+ int failures() const { return _failures; }
+
+ bool doHeapRegion(HeapRegion* hr) {
+ if (hr->continuesHumongous()) {
+ // We will ignore these here and process them when their
+ // associated "starts humongous" region is processed (see
+ // set_bit_for_heap_region()). Note that we cannot rely on their
+ // associated "starts humongous" region to have their bit set to
+ // 1 since, due to the region chunking in the parallel region
+ // iteration, a "continues humongous" region might be visited
+ // before its associated "starts humongous".
+ return false;
+ }
+
+ int failures = 0;
+
+ // Call the CalcLiveObjectsClosure to walk the marking bitmap for
+ // this region and set the corresponding bits in the expected region
+ // and card bitmaps.
+ bool res = _calc_cl.doHeapRegion(hr);
+ assert(res == false, "should be continuing");
+
+ MutexLockerEx x((_verbose ? ParGCRareEvent_lock : NULL),
+ Mutex::_no_safepoint_check_flag);
+
+ // Verify that _top_at_conc_count == ntams
+ if (hr->top_at_conc_mark_count() != hr->next_top_at_mark_start()) {
+ if (_verbose) {
+ gclog_or_tty->print_cr("Region " SIZE_FORMAT ": top at conc count incorrect: "
+ "expected " PTR_FORMAT ", actual: " PTR_FORMAT,
+ hr->hrs_index(), hr->next_top_at_mark_start(),
+ hr->top_at_conc_mark_count());
+ }
+ failures += 1;
+ }
+
+ // Verify the marked bytes for this region.
+ size_t exp_marked_bytes = _calc_cl.region_marked_bytes();
+ size_t act_marked_bytes = hr->next_marked_bytes();
+
+ // We're not OK if expected marked bytes > actual marked bytes. It means
+ // we have missed accounting some objects during the actual marking.
+ if (exp_marked_bytes > act_marked_bytes) {
+ if (_verbose) {
+ gclog_or_tty->print_cr("Region " SIZE_FORMAT ": marked bytes mismatch: "
+ "expected: " SIZE_FORMAT ", actual: " SIZE_FORMAT,
+ hr->hrs_index(), exp_marked_bytes, act_marked_bytes);
+ }
+ failures += 1;
+ }
+
+ // Verify the bit, for this region, in the actual and expected
+ // (which was just calculated) region bit maps.
+ // We're not OK if the bit in the calculated expected region
+ // bitmap is set and the bit in the actual region bitmap is not.
+ BitMap::idx_t index = (BitMap::idx_t)hr->hrs_index();
+
+ bool expected = _exp_region_bm->at(index);
+ bool actual = _region_bm->at(index);
+ if (expected && !actual) {
+ if (_verbose) {
+ gclog_or_tty->print_cr("Region " SIZE_FORMAT ": region bitmap mismatch: "
+ "expected: %d, actual: %d",
+ hr->hrs_index(), expected, actual);
+ }
+ failures += 1;
+ }
+
+ // Verify that the card bit maps for the cards spanned by the current
+ // region match. We have an error if we have a set bit in the expected
+ // bit map and the corresponding bit in the actual bitmap is not set.
+
+ BitMap::idx_t start_idx = _cm->card_bitmap_index_for(hr->bottom());
+ BitMap::idx_t end_idx = _cm->card_bitmap_index_for(hr->top());
+
+ for (BitMap::idx_t i = start_idx; i < end_idx; i+=1) {
+ expected = _exp_card_bm->at(i);
+ actual = _card_bm->at(i);
+
+ if (expected && !actual) {
+ if (_verbose) {
+ gclog_or_tty->print_cr("Region " SIZE_FORMAT ": card bitmap mismatch at " SIZE_FORMAT ": "
+ "expected: %d, actual: %d",
+ hr->hrs_index(), i, expected, actual);
+ }
+ failures += 1;
+ }
+ }
+
+ if (failures > 0 && _verbose) {
+ gclog_or_tty->print_cr("Region " HR_FORMAT ", ntams: " PTR_FORMAT ", "
+ "marked_bytes: calc/actual " SIZE_FORMAT "/" SIZE_FORMAT,
+ HR_FORMAT_PARAMS(hr), hr->next_top_at_mark_start(),
+ _calc_cl.region_marked_bytes(), hr->next_marked_bytes());
+ }
+
+ _failures += failures;
+
+ // We could stop iteration over the heap when we
+ // find the first voilating region by returning true.
+ return false;
+ }
};
-void ConcurrentMark::calcDesiredRegions() {
- _region_bm.clear();
- _card_bm.clear();
- CalcLiveObjectsClosure calccl(false /*final*/,
- nextMarkBitMap(), this,
- &_region_bm, &_card_bm);
- G1CollectedHeap *g1h = G1CollectedHeap::heap();
- g1h->heap_region_iterate(&calccl);
-
- do {
- calccl.reset();
- g1h->heap_region_iterate(&calccl);
- } while (calccl.changed());
-}
+class G1ParVerifyFinalCountTask: public AbstractGangTask {
+protected:
+ G1CollectedHeap* _g1h;
+ ConcurrentMark* _cm;
+ BitMap* _actual_region_bm;
+ BitMap* _actual_card_bm;
+
+ uint _n_workers;
+
+ BitMap* _expected_region_bm;
+ BitMap* _expected_card_bm;
+
+ int _failures;
+ bool _verbose;
+
+public:
+ G1ParVerifyFinalCountTask(G1CollectedHeap* g1h,
+ BitMap* region_bm, BitMap* card_bm,
+ BitMap* expected_region_bm, BitMap* expected_card_bm)
+ : AbstractGangTask("G1 verify final counting"),
+ _g1h(g1h), _cm(_g1h->concurrent_mark()),
+ _actual_region_bm(region_bm), _actual_card_bm(card_bm),
+ _expected_region_bm(expected_region_bm), _expected_card_bm(expected_card_bm),
+ _failures(0), _verbose(false),
+ _n_workers(0) {
+ assert(VerifyDuringGC, "don't call this otherwise");
+
+ // Use the value already set as the number of active threads
+ // in the call to run_task().
+ if (G1CollectedHeap::use_parallel_gc_threads()) {
+ assert( _g1h->workers()->active_workers() > 0,
+ "Should have been previously set");
+ _n_workers = _g1h->workers()->active_workers();
+ } else {
+ _n_workers = 1;
+ }
+
+ assert(_expected_card_bm->size() == _actual_card_bm->size(), "sanity");
+ assert(_expected_region_bm->size() == _actual_region_bm->size(), "sanity");
+
+ _verbose = _cm->verbose_medium();
+ }
+
+ void work(uint worker_id) {
+ assert(worker_id < _n_workers, "invariant");
+
+ VerifyLiveObjectDataHRClosure verify_cl(_cm,
+ _actual_region_bm, _actual_card_bm,
+ _expected_region_bm,
+ _expected_card_bm,
+ _verbose);
+
+ if (G1CollectedHeap::use_parallel_gc_threads()) {
+ _g1h->heap_region_par_iterate_chunked(&verify_cl,
+ worker_id,
+ _n_workers,
+ HeapRegion::VerifyCountClaimValue);
+ } else {
+ _g1h->heap_region_iterate(&verify_cl);
+ }
+
+ Atomic::add(verify_cl.failures(), &_failures);
+ }
+
+ int failures() const { return _failures; }
+};
+
+// Final update of count data (during cleanup).
+// Adds [top_at_count, NTAMS) to the marked bytes for each
+// region. Sets the bits in the card bitmap corresponding
+// to the interval [top_at_count, top], and sets the
+// liveness bit for each region containing live data
+// in the region bitmap.
+
+class FinalCountDataUpdateClosure: public HeapRegionClosure {
+ ConcurrentMark* _cm;
+ BitMap* _region_bm;
+ BitMap* _card_bm;
+
+ size_t _total_live_bytes;
+ size_t _total_used_bytes;
+ size_t _total_words_done;
+
+ void set_card_bitmap_range(BitMap::idx_t start_idx, BitMap::idx_t last_idx) {
+ assert(start_idx <= last_idx, "sanity");
+
+ // Set the inclusive bit range [start_idx, last_idx].
+ // For small ranges (up to 8 cards) use a simple loop; otherwise
+ // use par_at_put_range.
+ if ((last_idx - start_idx) <= 8) {
+ for (BitMap::idx_t i = start_idx; i <= last_idx; i += 1) {
+ _card_bm->par_set_bit(i);
+ }
+ } else {
+ assert(last_idx < _card_bm->size(), "sanity");
+ // Note BitMap::par_at_put_range() is exclusive.
+ _card_bm->par_at_put_range(start_idx, last_idx+1, true);
+ }
+ }
+
+ // It takes a region that's not empty (i.e., it has at least one
+ // live object in it and sets its corresponding bit on the region
+ // bitmap to 1. If the region is "starts humongous" it will also set
+ // to 1 the bits on the region bitmap that correspond to its
+ // associated "continues humongous" regions.
+ void set_bit_for_region(HeapRegion* hr) {
+ assert(!hr->continuesHumongous(), "should have filtered those out");
+
+ size_t index = hr->hrs_index();
+ if (!hr->startsHumongous()) {
+ // Normal (non-humongous) case: just set the bit.
+ _region_bm->par_set_bit((BitMap::idx_t) index);
+ } else {
+ // Starts humongous case: calculate how many regions are part of
+ // this humongous region and then set the bit range.
+ G1CollectedHeap* g1h = G1CollectedHeap::heap();
+ HeapRegion *last_hr = g1h->heap_region_containing_raw(hr->end() - 1);
+ size_t end_index = last_hr->hrs_index() + 1;
+ _region_bm->par_at_put_range((BitMap::idx_t) index,
+ (BitMap::idx_t) end_index, true);
+ }
+ }
+
+ public:
+ FinalCountDataUpdateClosure(ConcurrentMark* cm,
+ BitMap* region_bm,
+ BitMap* card_bm) :
+ _cm(cm), _region_bm(region_bm), _card_bm(card_bm),
+ _total_words_done(0), _total_live_bytes(0), _total_used_bytes(0) { }
+
+ bool doHeapRegion(HeapRegion* hr) {
+
+ if (hr->continuesHumongous()) {
+ // We will ignore these here and process them when their
+ // associated "starts humongous" region is processed (see
+ // set_bit_for_heap_region()). Note that we cannot rely on their
+ // associated "starts humongous" region to have their bit set to
+ // 1 since, due to the region chunking in the parallel region
+ // iteration, a "continues humongous" region might be visited
+ // before its associated "starts humongous".
+ return false;
+ }
+
+ HeapWord* start = hr->top_at_conc_mark_count();
+ HeapWord* ntams = hr->next_top_at_mark_start();
+ HeapWord* top = hr->top();
+
+ assert(hr->bottom() <= start && start <= hr->end() &&
+ hr->bottom() <= ntams && ntams <= hr->end(), "Preconditions.");
+
+ size_t words_done = ntams - hr->bottom();
+
+ if (start < ntams) {
+ // Region was changed between remark and cleanup pauses
+ // We need to add (ntams - start) to the marked bytes
+ // for this region, and set bits for the range
+ // [ card_idx(start), card_idx(ntams) ) in the card bitmap.
+ size_t live_bytes = (ntams - start) * HeapWordSize;
+ hr->add_to_marked_bytes(live_bytes);
+
+ // Record the new top at conc count
+ hr->set_top_at_conc_mark_count(ntams);
+
+ // The setting of the bits in the card bitmap takes place below
+ }
+
+ // Mark the allocated-since-marking portion...
+ if (ntams < top) {
+ // This definitely means the region has live objects.
+ set_bit_for_region(hr);
+ }
+
+ // Now set the bits for [start, top]
+ BitMap::idx_t start_idx = _cm->card_bitmap_index_for(start);
+ BitMap::idx_t last_idx = _cm->card_bitmap_index_for(top);
+ set_card_bitmap_range(start_idx, last_idx);
+
+ // Set the bit for the region if it contains live data
+ if (hr->next_marked_bytes() > 0) {
+ set_bit_for_region(hr);
+ }
+
+ _total_words_done += words_done;
+ _total_used_bytes += hr->used();
+ _total_live_bytes += hr->next_marked_bytes();
+
+ return false;
+ }
+
+ size_t total_words_done() const { return _total_words_done; }
+ size_t total_live_bytes() const { return _total_live_bytes; }
+ size_t total_used_bytes() const { return _total_used_bytes; }
+};
class G1ParFinalCountTask: public AbstractGangTask {
protected:
G1CollectedHeap* _g1h;
- CMBitMap* _bm;
+ ConcurrentMark* _cm;
+ BitMap* _actual_region_bm;
+ BitMap* _actual_card_bm;
+
uint _n_workers;
+
size_t *_live_bytes;
size_t *_used_bytes;
- BitMap* _region_bm;
- BitMap* _card_bm;
+
public:
- G1ParFinalCountTask(G1CollectedHeap* g1h, CMBitMap* bm,
- BitMap* region_bm, BitMap* card_bm)
- : AbstractGangTask("G1 final counting"), _g1h(g1h),
- _bm(bm), _region_bm(region_bm), _card_bm(card_bm),
- _n_workers(0)
- {
+ G1ParFinalCountTask(G1CollectedHeap* g1h, BitMap* region_bm, BitMap* card_bm)
+ : AbstractGangTask("G1 final counting"),
+ _g1h(g1h), _cm(_g1h->concurrent_mark()),
+ _actual_region_bm(region_bm), _actual_card_bm(card_bm),
+ _n_workers(0) {
// Use the value already set as the number of active threads
// in the call to run_task(). Needed for the allocation of
// _live_bytes and _used_bytes.
@@ -1539,29 +1965,32 @@
}
void work(uint worker_id) {
- CalcLiveObjectsClosure calccl(true /*final*/,
- _bm, _g1h->concurrent_mark(),
- _region_bm, _card_bm);
- calccl.no_yield();
+ assert(worker_id < _n_workers, "invariant");
+
+ FinalCountDataUpdateClosure final_update_cl(_cm,
+ _actual_region_bm,
+ _actual_card_bm);
+
if (G1CollectedHeap::use_parallel_gc_threads()) {
- _g1h->heap_region_par_iterate_chunked(&calccl, worker_id,
- (int) _n_workers,
+ _g1h->heap_region_par_iterate_chunked(&final_update_cl,
+ worker_id,
+ _n_workers,
HeapRegion::FinalCountClaimValue);
} else {
- _g1h->heap_region_iterate(&calccl);
+ _g1h->heap_region_iterate(&final_update_cl);
}
- assert(calccl.complete(), "Shouldn't have yielded!");
-
- assert(worker_id < _n_workers, "invariant");
- _live_bytes[worker_id] = calccl.tot_live();
- _used_bytes[worker_id] = calccl.tot_used();
- }
+
+ _live_bytes[worker_id] = final_update_cl.total_live_bytes();
+ _used_bytes[worker_id] = final_update_cl.total_used_bytes();
+ }
+
size_t live_bytes() {
size_t live_bytes = 0;
for (uint i = 0; i < _n_workers; ++i)
live_bytes += _live_bytes[i];
return live_bytes;
}
+
size_t used_bytes() {
size_t used_bytes = 0;
for (uint i = 0; i < _n_workers; ++i)
@@ -1724,8 +2153,7 @@
G1ParScrubRemSetTask(G1CollectedHeap* g1h,
BitMap* region_bm, BitMap* card_bm) :
AbstractGangTask("G1 ScrubRS"), _g1rs(g1h->g1_rem_set()),
- _region_bm(region_bm), _card_bm(card_bm)
- {}
+ _region_bm(region_bm), _card_bm(card_bm) { }
void work(uint worker_id) {
if (G1CollectedHeap::use_parallel_gc_threads()) {
@@ -1772,11 +2200,10 @@
uint n_workers;
// Do counting once more with the world stopped for good measure.
- G1ParFinalCountTask g1_par_count_task(g1h, nextMarkBitMap(),
- &_region_bm, &_card_bm);
+ G1ParFinalCountTask g1_par_count_task(g1h, &_region_bm, &_card_bm);
+
if (G1CollectedHeap::use_parallel_gc_threads()) {
- assert(g1h->check_heap_region_claim_values(
- HeapRegion::InitialClaimValue),
+ assert(g1h->check_heap_region_claim_values(HeapRegion::InitialClaimValue),
"sanity check");
g1h->set_par_threads();
@@ -1787,14 +2214,42 @@
// Done with the parallel phase so reset to 0.
g1h->set_par_threads(0);
- assert(g1h->check_heap_region_claim_values(
- HeapRegion::FinalCountClaimValue),
+ assert(g1h->check_heap_region_claim_values(HeapRegion::FinalCountClaimValue),
"sanity check");
} else {
n_workers = 1;
g1_par_count_task.work(0);
}
+ if (VerifyDuringGC) {
+ // Verify that the counting data accumulated during marking matches
+ // that calculated by walking the marking bitmap.
+
+ // Bitmaps to hold expected values
+ BitMap expected_region_bm(_region_bm.size(), false);
+ BitMap expected_card_bm(_card_bm.size(), false);
+
+ G1ParVerifyFinalCountTask g1_par_verify_task(g1h,
+ &_region_bm,
+ &_card_bm,
+ &expected_region_bm,
+ &expected_card_bm);
+
+ if (G1CollectedHeap::use_parallel_gc_threads()) {
+ g1h->set_par_threads((int)n_workers);
+ g1h->workers()->run_task(&g1_par_verify_task);
+ // Done with the parallel phase so reset to 0.
+ g1h->set_par_threads(0);
+
+ assert(g1h->check_heap_region_claim_values(HeapRegion::VerifyCountClaimValue),
+ "sanity check");
+ } else {
+ g1_par_verify_task.work(0);
+ }
+
+ guarantee(g1_par_verify_task.failures() == 0, "Unexpected accounting failures");
+ }
+
size_t known_garbage_bytes =
g1_par_count_task.used_bytes() - g1_par_count_task.live_bytes();
g1p->set_known_garbage_bytes(known_garbage_bytes);
@@ -1905,6 +2360,10 @@
// races with it goes around and waits for completeCleanup to finish.
g1h->increment_total_collections();
+ // We reclaimed old regions so we should calculate the sizes to make
+ // sure we update the old gen/space data.
+ g1h->g1mm()->update_sizes();
+
if (VerifyDuringGC) {
HandleMark hm; // handle scope
gclog_or_tty->print(" VerifyDuringGC:(after)");
@@ -1983,12 +2442,11 @@
class G1CMKeepAliveClosure: public OopClosure {
G1CollectedHeap* _g1;
ConcurrentMark* _cm;
- CMBitMap* _bitMap;
public:
- G1CMKeepAliveClosure(G1CollectedHeap* g1, ConcurrentMark* cm,
- CMBitMap* bitMap) :
- _g1(g1), _cm(cm),
- _bitMap(bitMap) {}
+ G1CMKeepAliveClosure(G1CollectedHeap* g1, ConcurrentMark* cm) :
+ _g1(g1), _cm(cm) {
+ assert(Thread::current()->is_VM_thread(), "otherwise fix worker id");
+ }
virtual void do_oop(narrowOop* p) { do_oop_work(p); }
virtual void do_oop( oop* p) { do_oop_work(p); }
@@ -2004,26 +2462,25 @@
}
if (_g1->is_in_g1_reserved(addr) && _g1->is_obj_ill(obj)) {
- _bitMap->mark(addr);
+ _cm->mark_and_count(obj);
_cm->mark_stack_push(obj);
}
}
};
class G1CMDrainMarkingStackClosure: public VoidClosure {
+ ConcurrentMark* _cm;
CMMarkStack* _markStack;
- CMBitMap* _bitMap;
G1CMKeepAliveClosure* _oopClosure;
public:
- G1CMDrainMarkingStackClosure(CMBitMap* bitMap, CMMarkStack* markStack,
+ G1CMDrainMarkingStackClosure(ConcurrentMark* cm, CMMarkStack* markStack,
G1CMKeepAliveClosure* oopClosure) :
- _bitMap(bitMap),
+ _cm(cm),
_markStack(markStack),
- _oopClosure(oopClosure)
- {}
+ _oopClosure(oopClosure) { }
void do_void() {
- _markStack->drain((OopClosure*)_oopClosure, _bitMap, false);
+ _markStack->drain((OopClosure*)_oopClosure, _cm->nextMarkBitMap(), false);
}
};
@@ -2102,8 +2559,7 @@
CMTask* _task;
public:
G1CMParDrainMarkingStackClosure(ConcurrentMark* cm, CMTask* task) :
- _cm(cm), _task(task)
- {}
+ _cm(cm), _task(task) { }
void do_void() {
do {
@@ -2242,9 +2698,9 @@
rp->setup_policy(clear_all_soft_refs);
assert(_markStack.isEmpty(), "mark stack should be empty");
- G1CMKeepAliveClosure g1_keep_alive(g1h, this, nextMarkBitMap());
+ G1CMKeepAliveClosure g1_keep_alive(g1h, this);
G1CMDrainMarkingStackClosure
- g1_drain_mark_stack(nextMarkBitMap(), &_markStack, &g1_keep_alive);
+ g1_drain_mark_stack(this, &_markStack, &g1_keep_alive);
// We use the work gang from the G1CollectedHeap and we utilize all
// the worker threads.
@@ -2616,18 +3072,6 @@
// during an evacuation pause). This was a late change to the code and
// is currently not being taken advantage of.
-class CMGlobalObjectClosure : public ObjectClosure {
-private:
- ConcurrentMark* _cm;
-
-public:
- void do_object(oop obj) {
- _cm->deal_with_reference(obj);
- }
-
- CMGlobalObjectClosure(ConcurrentMark* cm) : _cm(cm) { }
-};
-
void ConcurrentMark::deal_with_reference(oop obj) {
if (verbose_high()) {
gclog_or_tty->print_cr("[global] we're dealing with reference "PTR_FORMAT,
@@ -2672,6 +3116,18 @@
}
}
+class CMGlobalObjectClosure : public ObjectClosure {
+private:
+ ConcurrentMark* _cm;
+
+public:
+ void do_object(oop obj) {
+ _cm->deal_with_reference(obj);
+ }
+
+ CMGlobalObjectClosure(ConcurrentMark* cm) : _cm(cm) { }
+};
+
void ConcurrentMark::drainAllSATBBuffers() {
guarantee(false, "drainAllSATBBuffers(): don't call this any more");
@@ -2693,15 +3149,6 @@
assert(satb_mq_set.completed_buffers_num() == 0, "invariant");
}
-void ConcurrentMark::clear(oop p) {
- assert(p != NULL && p->is_oop(), "expected an oop");
- HeapWord* addr = (HeapWord*)p;
- assert(addr >= _nextMarkBitMap->startWord() ||
- addr < _nextMarkBitMap->endWord(), "in a region");
-
- _nextMarkBitMap->clear(addr);
-}
-
void ConcurrentMark::clearRangePrevBitmap(MemRegion mr) {
// Note we are overriding the read-only view of the prev map here, via
// the cast.
@@ -3015,6 +3462,192 @@
}
}
+// Aggregate the counting data that was constructed concurrently
+// with marking.
+class AggregateCountDataHRClosure: public HeapRegionClosure {
+ ConcurrentMark* _cm;
+ BitMap* _cm_card_bm;
+ size_t _max_task_num;
+
+ public:
+ AggregateCountDataHRClosure(ConcurrentMark *cm,
+ BitMap* cm_card_bm,
+ size_t max_task_num) :
+ _cm(cm), _cm_card_bm(cm_card_bm),
+ _max_task_num(max_task_num) { }
+
+ bool is_card_aligned(HeapWord* p) {
+ return ((uintptr_t(p) & (CardTableModRefBS::card_size - 1)) == 0);
+ }
+
+ bool doHeapRegion(HeapRegion* hr) {
+ if (hr->continuesHumongous()) {
+ // We will ignore these here and process them when their
+ // associated "starts humongous" region is processed.
+ // Note that we cannot rely on their associated
+ // "starts humongous" region to have their bit set to 1
+ // since, due to the region chunking in the parallel region
+ // iteration, a "continues humongous" region might be visited
+ // before its associated "starts humongous".
+ return false;
+ }
+
+ HeapWord* start = hr->bottom();
+ HeapWord* limit = hr->next_top_at_mark_start();
+ HeapWord* end = hr->end();
+
+ assert(start <= limit && limit <= hr->top() && hr->top() <= hr->end(),
+ err_msg("Preconditions not met - "
+ "start: "PTR_FORMAT", limit: "PTR_FORMAT", "
+ "top: "PTR_FORMAT", end: "PTR_FORMAT,
+ start, limit, hr->top(), hr->end()));
+
+ assert(hr->next_marked_bytes() == 0, "Precondition");
+
+ if (start == limit) {
+ // NTAMS of this region has not been set so nothing to do.
+ return false;
+ }
+
+ assert(is_card_aligned(start), "sanity");
+ assert(is_card_aligned(end), "sanity");
+
+ BitMap::idx_t start_idx = _cm->card_bitmap_index_for(start);
+ BitMap::idx_t limit_idx = _cm->card_bitmap_index_for(limit);
+ BitMap::idx_t end_idx = _cm->card_bitmap_index_for(end);
+
+ // If ntams is not card aligned then we bump the index for
+ // limit so that we get the card spanning ntams.
+ if (!is_card_aligned(limit)) {
+ limit_idx += 1;
+ }
+
+ assert(limit_idx <= end_idx, "or else use atomics");
+
+ // Aggregate the "stripe" in the count data associated with hr.
+ size_t hrs_index = hr->hrs_index();
+ size_t marked_bytes = 0;
+
+ for (int i = 0; (size_t)i < _max_task_num; i += 1) {
+ size_t* marked_bytes_array = _cm->count_marked_bytes_array_for(i);
+ BitMap* task_card_bm = _cm->count_card_bitmap_for(i);
+
+ // Fetch the marked_bytes in this region for task i and
+ // add it to the running total for this region.
+ marked_bytes += marked_bytes_array[hrs_index];
+
+ // Now union the bitmaps[0,max_task_num)[start_idx..limit_idx)
+ // into the global card bitmap.
+ BitMap::idx_t scan_idx = task_card_bm->get_next_one_offset(start_idx, limit_idx);
+
+ while (scan_idx < limit_idx) {
+ assert(task_card_bm->at(scan_idx) == true, "should be");
+ _cm_card_bm->set_bit(scan_idx);
+ assert(_cm_card_bm->at(scan_idx) == true, "should be");
+
+ // BitMap::get_next_one_offset() can handle the case when
+ // its left_offset parameter is greater than its right_offset
+ // parameter. If does, however, have an early exit if
+ // left_offset == right_offset. So let's limit the value
+ // passed in for left offset here.
+ BitMap::idx_t next_idx = MIN2(scan_idx + 1, limit_idx);
+ scan_idx = task_card_bm->get_next_one_offset(next_idx, limit_idx);
+ }
+ }
+
+ // Update the marked bytes for this region.
+ hr->add_to_marked_bytes(marked_bytes);
+
+ // Now set the top at count to NTAMS.
+ hr->set_top_at_conc_mark_count(limit);
+
+ // Next heap region
+ return false;
+ }
+};
+
+class G1AggregateCountDataTask: public AbstractGangTask {
+protected:
+ G1CollectedHeap* _g1h;
+ ConcurrentMark* _cm;
+ BitMap* _cm_card_bm;
+ size_t _max_task_num;
+ int _active_workers;
+
+public:
+ G1AggregateCountDataTask(G1CollectedHeap* g1h,
+ ConcurrentMark* cm,
+ BitMap* cm_card_bm,
+ size_t max_task_num,
+ int n_workers) :
+ AbstractGangTask("Count Aggregation"),
+ _g1h(g1h), _cm(cm), _cm_card_bm(cm_card_bm),
+ _max_task_num(max_task_num),
+ _active_workers(n_workers) { }
+
+ void work(uint worker_id) {
+ AggregateCountDataHRClosure cl(_cm, _cm_card_bm, _max_task_num);
+
+ if (G1CollectedHeap::use_parallel_gc_threads()) {
+ _g1h->heap_region_par_iterate_chunked(&cl, worker_id,
+ _active_workers,
+ HeapRegion::AggregateCountClaimValue);
+ } else {
+ _g1h->heap_region_iterate(&cl);
+ }
+ }
+};
+
+
+void ConcurrentMark::aggregate_count_data() {
+ int n_workers = (G1CollectedHeap::use_parallel_gc_threads() ?
+ _g1h->workers()->active_workers() :
+ 1);
+
+ G1AggregateCountDataTask g1_par_agg_task(_g1h, this, &_card_bm,
+ _max_task_num, n_workers);
+
+ if (G1CollectedHeap::use_parallel_gc_threads()) {
+ assert(_g1h->check_heap_region_claim_values(HeapRegion::InitialClaimValue),
+ "sanity check");
+ _g1h->set_par_threads(n_workers);
+ _g1h->workers()->run_task(&g1_par_agg_task);
+ _g1h->set_par_threads(0);
+
+ assert(_g1h->check_heap_region_claim_values(HeapRegion::AggregateCountClaimValue),
+ "sanity check");
+ _g1h->reset_heap_region_claim_values();
+ } else {
+ g1_par_agg_task.work(0);
+ }
+}
+
+// Clear the per-worker arrays used to store the per-region counting data
+void ConcurrentMark::clear_all_count_data() {
+ // Clear the global card bitmap - it will be filled during
+ // liveness count aggregation (during remark) and the
+ // final counting task.
+ _card_bm.clear();
+
+ // Clear the global region bitmap - it will be filled as part
+ // of the final counting task.
+ _region_bm.clear();
+
+ size_t max_regions = _g1h->max_regions();
+ assert(_max_task_num != 0, "unitialized");
+
+ for (int i = 0; (size_t) i < _max_task_num; i += 1) {
+ BitMap* task_card_bm = count_card_bitmap_for(i);
+ size_t* marked_bytes_array = count_marked_bytes_array_for(i);
+
+ assert(task_card_bm->size() == _card_bm.size(), "size mismatch");
+ assert(marked_bytes_array != NULL, "uninitialized");
+
+ memset(marked_bytes_array, 0, (max_regions * sizeof(size_t)));
+ task_card_bm->clear();
+ }
+}
+
void ConcurrentMark::print_stats() {
if (verbose_stats()) {
gclog_or_tty->print_cr("---------------------------------------------------------------------");
@@ -3350,6 +3983,8 @@
void ConcurrentMark::abort() {
// Clear all marks to force marking thread to do nothing
_nextMarkBitMap->clearAll();
+ // Clear the liveness counting data
+ clear_all_count_data();
// Empty mark stack
clear_marking_state();
for (int i = 0; i < (int)_max_task_num; ++i) {
@@ -3402,23 +4037,15 @@
(_init_times.sum() + _remark_times.sum() +
_cleanup_times.sum())/1000.0);
gclog_or_tty->print_cr(" Total concurrent time = %8.2f s "
- "(%8.2f s marking, %8.2f s counting).",
+ "(%8.2f s marking).",
cmThread()->vtime_accum(),
- cmThread()->vtime_mark_accum(),
- cmThread()->vtime_count_accum());
+ cmThread()->vtime_mark_accum());
}
void ConcurrentMark::print_worker_threads_on(outputStream* st) const {
_parallel_workers->print_worker_threads_on(st);
}
-// Closures
-// XXX: there seems to be a lot of code duplication here;
-// should refactor and consolidate the shared code.
-
-// This closure is used to mark refs into the CMS generation in
-// the CMS bit map. Called at the first checkpoint.
-
// We take a break if someone is trying to stop the world.
bool ConcurrentMark::do_yield_check(uint worker_id) {
if (should_yield()) {
@@ -4704,6 +5331,8 @@
CMTask::CMTask(int task_id,
ConcurrentMark* cm,
+ size_t* marked_bytes,
+ BitMap* card_bm,
CMTaskQueue* task_queue,
CMTaskQueueSet* task_queues)
: _g1h(G1CollectedHeap::heap()),
@@ -4713,7 +5342,9 @@
_task_queue(task_queue),
_task_queues(task_queues),
_cm_oop_closure(NULL),
- _aborted_region(MemRegion()) {
+ _aborted_region(MemRegion()),
+ _marked_bytes_array(marked_bytes),
+ _card_bm(card_bm) {
guarantee(task_queue != NULL, "invariant");
guarantee(task_queues != NULL, "invariant");
--- a/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -84,8 +84,8 @@
}
// iteration
- bool iterate(BitMapClosure* cl) { return _bm.iterate(cl); }
- bool iterate(BitMapClosure* cl, MemRegion mr);
+ inline bool iterate(BitMapClosure* cl, MemRegion mr);
+ inline bool iterate(BitMapClosure* cl);
// Return the address corresponding to the next marked bit at or after
// "addr", and before "limit", if "limit" is non-NULL. If there is no
@@ -349,10 +349,62 @@
high_verbose // per object verbose
} CMVerboseLevel;
+class YoungList;
+
+// Root Regions are regions that are not empty at the beginning of a
+// marking cycle and which we might collect during an evacuation pause
+// while the cycle is active. Given that, during evacuation pauses, we
+// do not copy objects that are explicitly marked, what we have to do
+// for the root regions is to scan them and mark all objects reachable
+// from them. According to the SATB assumptions, we only need to visit
+// each object once during marking. So, as long as we finish this scan
+// before the next evacuation pause, we can copy the objects from the
+// root regions without having to mark them or do anything else to them.
+//
+// Currently, we only support root region scanning once (at the start
+// of the marking cycle) and the root regions are all the survivor
+// regions populated during the initial-mark pause.
+class CMRootRegions VALUE_OBJ_CLASS_SPEC {
+private:
+ YoungList* _young_list;
+ ConcurrentMark* _cm;
+
+ volatile bool _scan_in_progress;
+ volatile bool _should_abort;
+ HeapRegion* volatile _next_survivor;
+
+public:
+ CMRootRegions();
+ // We actually do most of the initialization in this method.
+ void init(G1CollectedHeap* g1h, ConcurrentMark* cm);
+
+ // Reset the claiming / scanning of the root regions.
+ void prepare_for_scan();
+
+ // Forces get_next() to return NULL so that the iteration aborts early.
+ void abort() { _should_abort = true; }
+
+ // Return true if the CM thread are actively scanning root regions,
+ // false otherwise.
+ bool scan_in_progress() { return _scan_in_progress; }
+
+ // Claim the next root region to scan atomically, or return NULL if
+ // all have been claimed.
+ HeapRegion* claim_next();
+
+ // Flag that we're done with root region scanning and notify anyone
+ // who's waiting on it. If aborted is false, assume that all regions
+ // have been claimed.
+ void scan_finished();
+
+ // If CM threads are still scanning root regions, wait until they
+ // are done. Return true if we had to wait, false otherwise.
+ bool wait_until_scan_finished();
+};
class ConcurrentMarkThread;
-class ConcurrentMark: public CHeapObj {
+class ConcurrentMark : public CHeapObj {
friend class ConcurrentMarkThread;
friend class CMTask;
friend class CMBitMapClosure;
@@ -386,7 +438,7 @@
FreeRegionList _cleanup_list;
- // CMS marking support structures
+ // Concurrent marking support structures
CMBitMap _markBitMap1;
CMBitMap _markBitMap2;
CMBitMapRO* _prevMarkBitMap; // completed mark bitmap
@@ -400,6 +452,9 @@
HeapWord* _heap_start;
HeapWord* _heap_end;
+ // Root region tracking and claiming.
+ CMRootRegions _root_regions;
+
// For gray objects
CMMarkStack _markStack; // Grey objects behind global finger.
CMRegionStack _regionStack; // Grey regions behind global finger.
@@ -426,7 +481,6 @@
WorkGangBarrierSync _first_overflow_barrier_sync;
WorkGangBarrierSync _second_overflow_barrier_sync;
-
// this is set by any task, when an overflow on the global data
// structures is detected.
volatile bool _has_overflown;
@@ -554,9 +608,9 @@
bool has_overflown() { return _has_overflown; }
void set_has_overflown() { _has_overflown = true; }
void clear_has_overflown() { _has_overflown = false; }
+ bool restart_for_overflow() { return _restart_for_overflow; }
bool has_aborted() { return _has_aborted; }
- bool restart_for_overflow() { return _restart_for_overflow; }
// Methods to enter the two overflow sync barriers
void enter_first_sync_barrier(int task_num);
@@ -578,6 +632,27 @@
}
}
+ // Live Data Counting data structures...
+ // These data structures are initialized at the start of
+ // marking. They are written to while marking is active.
+ // They are aggregated during remark; the aggregated values
+ // are then used to populate the _region_bm, _card_bm, and
+ // the total live bytes, which are then subsequently updated
+ // during cleanup.
+
+ // An array of bitmaps (one bit map per task). Each bitmap
+ // is used to record the cards spanned by the live objects
+ // marked by that task/worker.
+ BitMap* _count_card_bitmaps;
+
+ // Used to record the number of marked live bytes
+ // (for each region, by worker thread).
+ size_t** _count_marked_bytes;
+
+ // Card index of the bottom of the G1 heap. Used for biasing indices into
+ // the card bitmaps.
+ intptr_t _heap_bottom_card_num;
+
public:
// Manipulation of the global mark stack.
// Notice that the first mark_stack_push is CAS-based, whereas the
@@ -671,6 +746,8 @@
// Returns true if there are any aborted memory regions.
bool has_aborted_regions();
+ CMRootRegions* root_regions() { return &_root_regions; }
+
bool concurrent_marking_in_progress() {
return _concurrent_marking_in_progress;
}
@@ -703,6 +780,7 @@
ConcurrentMark(ReservedSpace rs, int max_regions);
~ConcurrentMark();
+
ConcurrentMarkThread* cmThread() { return _cmThread; }
CMBitMapRO* prevMarkBitMap() const { return _prevMarkBitMap; }
@@ -720,8 +798,17 @@
// G1CollectedHeap
// This notifies CM that a root during initial-mark needs to be
- // grayed. It is MT-safe.
- inline void grayRoot(oop obj, size_t word_size);
+ // grayed. It is MT-safe. word_size is the size of the object in
+ // words. It is passed explicitly as sometimes we cannot calculate
+ // it from the given object because it might be in an inconsistent
+ // state (e.g., in to-space and being copied). So the caller is
+ // responsible for dealing with this issue (e.g., get the size from
+ // the from-space image when the to-space image might be
+ // inconsistent) and always passing the size. hr is the region that
+ // contains the object and it's passed optionally from callers who
+ // might already have it (no point in recalculating it).
+ inline void grayRoot(oop obj, size_t word_size,
+ uint worker_id, HeapRegion* hr = NULL);
// It's used during evacuation pauses to gray a region, if
// necessary, and it's MT-safe. It assumes that the caller has
@@ -772,6 +859,13 @@
void checkpointRootsInitialPre();
void checkpointRootsInitialPost();
+ // Scan all the root regions and mark everything reachable from
+ // them.
+ void scanRootRegions();
+
+ // Scan a single root region and mark everything reachable from it.
+ void scanRootRegion(HeapRegion* hr, uint worker_id);
+
// Do concurrent phase of marking, to a tentative transitive closure.
void markFromRoots();
@@ -781,15 +875,13 @@
void checkpointRootsFinal(bool clear_all_soft_refs);
void checkpointRootsFinalWork();
- void calcDesiredRegions();
void cleanup();
void completeCleanup();
// Mark in the previous bitmap. NB: this is usually read-only, so use
// this carefully!
inline void markPrev(oop p);
- inline void markNext(oop p);
- void clear(oop p);
+
// Clears marks for all objects in the given range, for the prev,
// next, or both bitmaps. NB: the previous bitmap is usually
// read-only, so use this carefully!
@@ -913,6 +1005,114 @@
bool verbose_high() {
return _MARKING_VERBOSE_ && _verbose_level >= high_verbose;
}
+
+ // Counting data structure accessors
+
+ // Returns the card number of the bottom of the G1 heap.
+ // Used in biasing indices into accounting card bitmaps.
+ intptr_t heap_bottom_card_num() const {
+ return _heap_bottom_card_num;
+ }
+
+ // Returns the card bitmap for a given task or worker id.
+ BitMap* count_card_bitmap_for(uint worker_id) {
+ assert(0 <= worker_id && worker_id < _max_task_num, "oob");
+ assert(_count_card_bitmaps != NULL, "uninitialized");
+ BitMap* task_card_bm = &_count_card_bitmaps[worker_id];
+ assert(task_card_bm->size() == _card_bm.size(), "size mismatch");
+ return task_card_bm;
+ }
+
+ // Returns the array containing the marked bytes for each region,
+ // for the given worker or task id.
+ size_t* count_marked_bytes_array_for(uint worker_id) {
+ assert(0 <= worker_id && worker_id < _max_task_num, "oob");
+ assert(_count_marked_bytes != NULL, "uninitialized");
+ size_t* marked_bytes_array = _count_marked_bytes[worker_id];
+ assert(marked_bytes_array != NULL, "uninitialized");
+ return marked_bytes_array;
+ }
+
+ // Returns the index in the liveness accounting card table bitmap
+ // for the given address
+ inline BitMap::idx_t card_bitmap_index_for(HeapWord* addr);
+
+ // Counts the size of the given memory region in the the given
+ // marked_bytes array slot for the given HeapRegion.
+ // Sets the bits in the given card bitmap that are associated with the
+ // cards that are spanned by the memory region.
+ inline void count_region(MemRegion mr, HeapRegion* hr,
+ size_t* marked_bytes_array,
+ BitMap* task_card_bm);
+
+ // Counts the given memory region in the task/worker counting
+ // data structures for the given worker id.
+ inline void count_region(MemRegion mr, HeapRegion* hr, uint worker_id);
+
+ // Counts the given memory region in the task/worker counting
+ // data structures for the given worker id.
+ inline void count_region(MemRegion mr, uint worker_id);
+
+ // Counts the given object in the given task/worker counting
+ // data structures.
+ inline void count_object(oop obj, HeapRegion* hr,
+ size_t* marked_bytes_array,
+ BitMap* task_card_bm);
+
+ // Counts the given object in the task/worker counting data
+ // structures for the given worker id.
+ inline void count_object(oop obj, HeapRegion* hr, uint worker_id);
+
+ // Attempts to mark the given object and, if successful, counts
+ // the object in the given task/worker counting structures.
+ inline bool par_mark_and_count(oop obj, HeapRegion* hr,
+ size_t* marked_bytes_array,
+ BitMap* task_card_bm);
+
+ // Attempts to mark the given object and, if successful, counts
+ // the object in the task/worker counting structures for the
+ // given worker id.
+ inline bool par_mark_and_count(oop obj, size_t word_size,
+ HeapRegion* hr, uint worker_id);
+
+ // Attempts to mark the given object and, if successful, counts
+ // the object in the task/worker counting structures for the
+ // given worker id.
+ inline bool par_mark_and_count(oop obj, HeapRegion* hr, uint worker_id);
+
+ // Similar to the above routine but we don't know the heap region that
+ // contains the object to be marked/counted, which this routine looks up.
+ inline bool par_mark_and_count(oop obj, uint worker_id);
+
+ // Similar to the above routine but there are times when we cannot
+ // safely calculate the size of obj due to races and we, therefore,
+ // pass the size in as a parameter. It is the caller's reponsibility
+ // to ensure that the size passed in for obj is valid.
+ inline bool par_mark_and_count(oop obj, size_t word_size, uint worker_id);
+
+ // Unconditionally mark the given object, and unconditinally count
+ // the object in the counting structures for worker id 0.
+ // Should *not* be called from parallel code.
+ inline bool mark_and_count(oop obj, HeapRegion* hr);
+
+ // Similar to the above routine but we don't know the heap region that
+ // contains the object to be marked/counted, which this routine looks up.
+ // Should *not* be called from parallel code.
+ inline bool mark_and_count(oop obj);
+
+protected:
+ // Clear all the per-task bitmaps and arrays used to store the
+ // counting data.
+ void clear_all_count_data();
+
+ // Aggregates the counting data for each worker/task
+ // that was constructed while marking. Also sets
+ // the amount of marked bytes for each region and
+ // the top at concurrent mark count.
+ void aggregate_count_data();
+
+ // Verification routine
+ void verify_count_data();
};
// A class representing a marking task.
@@ -1031,6 +1231,12 @@
TruncatedSeq _marking_step_diffs_ms;
+ // Counting data structures. Embedding the task's marked_bytes_array
+ // and card bitmap into the actual task saves having to go through
+ // the ConcurrentMark object.
+ size_t* _marked_bytes_array;
+ BitMap* _card_bm;
+
// LOTS of statistics related with this task
#if _MARKING_STATS_
NumberSeq _all_clock_intervals_ms;
@@ -1196,6 +1402,7 @@
}
CMTask(int task_num, ConcurrentMark *cm,
+ size_t* marked_bytes, BitMap* card_bm,
CMTaskQueue* task_queue, CMTaskQueueSet* task_queues);
// it prints statistics associated with this task
--- a/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.inline.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.inline.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -28,6 +28,214 @@
#include "gc_implementation/g1/concurrentMark.hpp"
#include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
+// Returns the index in the liveness accounting card bitmap
+// for the given address
+inline BitMap::idx_t ConcurrentMark::card_bitmap_index_for(HeapWord* addr) {
+ // Below, the term "card num" means the result of shifting an address
+ // by the card shift -- address 0 corresponds to card number 0. One
+ // must subtract the card num of the bottom of the heap to obtain a
+ // card table index.
+
+ intptr_t card_num = intptr_t(uintptr_t(addr) >> CardTableModRefBS::card_shift);
+ return card_num - heap_bottom_card_num();
+}
+
+// Counts the given memory region in the given task/worker
+// counting data structures.
+inline void ConcurrentMark::count_region(MemRegion mr, HeapRegion* hr,
+ size_t* marked_bytes_array,
+ BitMap* task_card_bm) {
+ G1CollectedHeap* g1h = _g1h;
+ HeapWord* start = mr.start();
+ HeapWord* last = mr.last();
+ size_t region_size_bytes = mr.byte_size();
+ size_t index = hr->hrs_index();
+
+ assert(!hr->continuesHumongous(), "should not be HC region");
+ assert(hr == g1h->heap_region_containing(start), "sanity");
+ assert(hr == g1h->heap_region_containing(mr.last()), "sanity");
+ assert(marked_bytes_array != NULL, "pre-condition");
+ assert(task_card_bm != NULL, "pre-condition");
+
+ // Add to the task local marked bytes for this region.
+ marked_bytes_array[index] += region_size_bytes;
+
+ BitMap::idx_t start_idx = card_bitmap_index_for(start);
+ BitMap::idx_t last_idx = card_bitmap_index_for(last);
+
+ // The card bitmap is task/worker specific => no need to use 'par' routines.
+ // Set bits in the inclusive bit range [start_idx, last_idx].
+ //
+ // For small ranges use a simple loop; otherwise use set_range
+ // The range are the cards that are spanned by the object/region
+ // so 8 cards will allow objects/regions up to 4K to be handled
+ // using the loop.
+ if ((last_idx - start_idx) <= 8) {
+ for (BitMap::idx_t i = start_idx; i <= last_idx; i += 1) {
+ task_card_bm->set_bit(i);
+ }
+ } else {
+ assert(last_idx < task_card_bm->size(), "sanity");
+ // Note: BitMap::set_range() is exclusive.
+ task_card_bm->set_range(start_idx, last_idx+1);
+ }
+}
+
+// Counts the given memory region in the task/worker counting
+// data structures for the given worker id.
+inline void ConcurrentMark::count_region(MemRegion mr,
+ HeapRegion* hr,
+ uint worker_id) {
+ size_t* marked_bytes_array = count_marked_bytes_array_for(worker_id);
+ BitMap* task_card_bm = count_card_bitmap_for(worker_id);
+ count_region(mr, hr, marked_bytes_array, task_card_bm);
+}
+
+// Counts the given memory region, which may be a single object, in the
+// task/worker counting data structures for the given worker id.
+inline void ConcurrentMark::count_region(MemRegion mr, uint worker_id) {
+ HeapWord* addr = mr.start();
+ HeapRegion* hr = _g1h->heap_region_containing_raw(addr);
+ count_region(mr, hr, worker_id);
+}
+
+// Counts the given object in the given task/worker counting data structures.
+inline void ConcurrentMark::count_object(oop obj,
+ HeapRegion* hr,
+ size_t* marked_bytes_array,
+ BitMap* task_card_bm) {
+ MemRegion mr((HeapWord*)obj, obj->size());
+ count_region(mr, hr, marked_bytes_array, task_card_bm);
+}
+
+// Counts the given object in the task/worker counting data
+// structures for the given worker id.
+inline void ConcurrentMark::count_object(oop obj,
+ HeapRegion* hr,
+ uint worker_id) {
+ size_t* marked_bytes_array = count_marked_bytes_array_for(worker_id);
+ BitMap* task_card_bm = count_card_bitmap_for(worker_id);
+ HeapWord* addr = (HeapWord*) obj;
+ count_object(obj, hr, marked_bytes_array, task_card_bm);
+}
+
+// Attempts to mark the given object and, if successful, counts
+// the object in the given task/worker counting structures.
+inline bool ConcurrentMark::par_mark_and_count(oop obj,
+ HeapRegion* hr,
+ size_t* marked_bytes_array,
+ BitMap* task_card_bm) {
+ HeapWord* addr = (HeapWord*)obj;
+ if (_nextMarkBitMap->parMark(addr)) {
+ // Update the task specific count data for the object.
+ count_object(obj, hr, marked_bytes_array, task_card_bm);
+ return true;
+ }
+ return false;
+}
+
+// Attempts to mark the given object and, if successful, counts
+// the object in the task/worker counting structures for the
+// given worker id.
+inline bool ConcurrentMark::par_mark_and_count(oop obj,
+ size_t word_size,
+ HeapRegion* hr,
+ uint worker_id) {
+ HeapWord* addr = (HeapWord*)obj;
+ if (_nextMarkBitMap->parMark(addr)) {
+ MemRegion mr(addr, word_size);
+ count_region(mr, hr, worker_id);
+ return true;
+ }
+ return false;
+}
+
+// Attempts to mark the given object and, if successful, counts
+// the object in the task/worker counting structures for the
+// given worker id.
+inline bool ConcurrentMark::par_mark_and_count(oop obj,
+ HeapRegion* hr,
+ uint worker_id) {
+ HeapWord* addr = (HeapWord*)obj;
+ if (_nextMarkBitMap->parMark(addr)) {
+ // Update the task specific count data for the object.
+ count_object(obj, hr, worker_id);
+ return true;
+ }
+ return false;
+}
+
+// As above - but we don't know the heap region containing the
+// object and so have to supply it.
+inline bool ConcurrentMark::par_mark_and_count(oop obj, uint worker_id) {
+ HeapWord* addr = (HeapWord*)obj;
+ HeapRegion* hr = _g1h->heap_region_containing_raw(addr);
+ return par_mark_and_count(obj, hr, worker_id);
+}
+
+// Similar to the above routine but we already know the size, in words, of
+// the object that we wish to mark/count
+inline bool ConcurrentMark::par_mark_and_count(oop obj,
+ size_t word_size,
+ uint worker_id) {
+ HeapWord* addr = (HeapWord*)obj;
+ if (_nextMarkBitMap->parMark(addr)) {
+ // Update the task specific count data for the object.
+ MemRegion mr(addr, word_size);
+ count_region(mr, worker_id);
+ return true;
+ }
+ return false;
+}
+
+// Unconditionally mark the given object, and unconditinally count
+// the object in the counting structures for worker id 0.
+// Should *not* be called from parallel code.
+inline bool ConcurrentMark::mark_and_count(oop obj, HeapRegion* hr) {
+ HeapWord* addr = (HeapWord*)obj;
+ _nextMarkBitMap->mark(addr);
+ // Update the task specific count data for the object.
+ count_object(obj, hr, 0 /* worker_id */);
+ return true;
+}
+
+// As above - but we don't have the heap region containing the
+// object, so we have to supply it.
+inline bool ConcurrentMark::mark_and_count(oop obj) {
+ HeapWord* addr = (HeapWord*)obj;
+ HeapRegion* hr = _g1h->heap_region_containing_raw(addr);
+ return mark_and_count(obj, hr);
+}
+
+inline bool CMBitMapRO::iterate(BitMapClosure* cl, MemRegion mr) {
+ HeapWord* start_addr = MAX2(startWord(), mr.start());
+ HeapWord* end_addr = MIN2(endWord(), mr.end());
+
+ if (end_addr > start_addr) {
+ // Right-open interval [start-offset, end-offset).
+ BitMap::idx_t start_offset = heapWordToOffset(start_addr);
+ BitMap::idx_t end_offset = heapWordToOffset(end_addr);
+
+ start_offset = _bm.get_next_one_offset(start_offset, end_offset);
+ while (start_offset < end_offset) {
+ HeapWord* obj_addr = offsetToHeapWord(start_offset);
+ oop obj = (oop) obj_addr;
+ if (!cl->do_bit(start_offset)) {
+ return false;
+ }
+ HeapWord* next_addr = MIN2(obj_addr + obj->size(), end_addr);
+ BitMap::idx_t next_offset = heapWordToOffset(next_addr);
+ start_offset = _bm.get_next_one_offset(next_offset, end_offset);
+ }
+ }
+ return true;
+}
+
+inline bool CMBitMapRO::iterate(BitMapClosure* cl) {
+ MemRegion mr(startWord(), sizeInWords());
+ return iterate(cl, mr);
+}
+
inline void CMTask::push(oop obj) {
HeapWord* objAddr = (HeapWord*) obj;
assert(_g1h->is_in_g1_reserved(objAddr), "invariant");
@@ -84,7 +292,7 @@
HeapWord* objAddr = (HeapWord*) obj;
assert(obj->is_oop_or_null(true /* ignore mark word */), "Error");
- if (_g1h->is_in_g1_reserved(objAddr)) {
+ if (_g1h->is_in_g1_reserved(objAddr)) {
assert(obj != NULL, "null check is implicit");
if (!_nextMarkBitMap->isMarked(objAddr)) {
// Only get the containing region if the object is not marked on the
@@ -98,9 +306,9 @@
}
// we need to mark it first
- if (_nextMarkBitMap->parMark(objAddr)) {
+ if (_cm->par_mark_and_count(obj, hr, _marked_bytes_array, _card_bm)) {
// No OrderAccess:store_load() is needed. It is implicit in the
- // CAS done in parMark(objAddr) above
+ // CAS done in CMBitMap::parMark() call in the routine above.
HeapWord* global_finger = _cm->finger();
#if _CHECK_BOTH_FINGERS_
@@ -160,25 +368,20 @@
((CMBitMap*)_prevMarkBitMap)->mark((HeapWord*) p);
}
-inline void ConcurrentMark::markNext(oop p) {
- assert(!_nextMarkBitMap->isMarked((HeapWord*) p), "sanity");
- _nextMarkBitMap->mark((HeapWord*) p);
-}
-
-inline void ConcurrentMark::grayRoot(oop obj, size_t word_size) {
+inline void ConcurrentMark::grayRoot(oop obj, size_t word_size,
+ uint worker_id, HeapRegion* hr) {
+ assert(obj != NULL, "pre-condition");
HeapWord* addr = (HeapWord*) obj;
+ if (hr == NULL) {
+ hr = _g1h->heap_region_containing_raw(addr);
+ } else {
+ assert(hr->is_in(addr), "pre-condition");
+ }
+ assert(hr != NULL, "sanity");
+ // Given that we're looking for a region that contains an object
+ // header it's impossible to get back a HC region.
+ assert(!hr->continuesHumongous(), "sanity");
- // Currently we don't do anything with word_size but we will use it
- // in the very near future in the liveness calculation piggy-backing
- // changes.
-
-#ifdef ASSERT
- HeapRegion* hr = _g1h->heap_region_containing(addr);
- assert(hr != NULL, "sanity");
- assert(!hr->is_survivor(), "should not allocate survivors during IM");
- assert(addr < hr->next_top_at_mark_start(),
- err_msg("addr: "PTR_FORMAT" hr: "HR_FORMAT" NTAMS: "PTR_FORMAT,
- addr, HR_FORMAT_PARAMS(hr), hr->next_top_at_mark_start()));
// We cannot assert that word_size == obj->size() given that obj
// might not be in a consistent state (another thread might be in
// the process of copying it). So the best thing we can do is to
@@ -188,10 +391,11 @@
err_msg("size: "SIZE_FORMAT" capacity: "SIZE_FORMAT" "HR_FORMAT,
word_size * HeapWordSize, hr->capacity(),
HR_FORMAT_PARAMS(hr)));
-#endif // ASSERT
- if (!_nextMarkBitMap->isMarked(addr)) {
- _nextMarkBitMap->parMark(addr);
+ if (addr < hr->next_top_at_mark_start()) {
+ if (!_nextMarkBitMap->isMarked(addr)) {
+ par_mark_and_count(obj, word_size, hr, worker_id);
+ }
}
}
--- a/hotspot/src/share/vm/gc_implementation/g1/concurrentMarkThread.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/concurrentMarkThread.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2012, 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
@@ -44,9 +44,7 @@
_started(false),
_in_progress(false),
_vtime_accum(0.0),
- _vtime_mark_accum(0.0),
- _vtime_count_accum(0.0)
-{
+ _vtime_mark_accum(0.0) {
create_and_start();
}
@@ -94,9 +92,36 @@
ResourceMark rm;
HandleMark hm;
double cycle_start = os::elapsedVTime();
- double mark_start_sec = os::elapsedTime();
char verbose_str[128];
+ // We have to ensure that we finish scanning the root regions
+ // before the next GC takes place. To ensure this we have to
+ // make sure that we do not join the STS until the root regions
+ // have been scanned. If we did then it's possible that a
+ // subsequent GC could block us from joining the STS and proceed
+ // without the root regions have been scanned which would be a
+ // correctness issue.
+
+ double scan_start = os::elapsedTime();
+ if (!cm()->has_aborted()) {
+ if (PrintGC) {
+ gclog_or_tty->date_stamp(PrintGCDateStamps);
+ gclog_or_tty->stamp(PrintGCTimeStamps);
+ gclog_or_tty->print_cr("[GC concurrent-root-region-scan-start]");
+ }
+
+ _cm->scanRootRegions();
+
+ double scan_end = os::elapsedTime();
+ if (PrintGC) {
+ gclog_or_tty->date_stamp(PrintGCDateStamps);
+ gclog_or_tty->stamp(PrintGCTimeStamps);
+ gclog_or_tty->print_cr("[GC concurrent-root-region-scan-end, %1.7lf]",
+ scan_end - scan_start);
+ }
+ }
+
+ double mark_start_sec = os::elapsedTime();
if (PrintGC) {
gclog_or_tty->date_stamp(PrintGCDateStamps);
gclog_or_tty->stamp(PrintGCTimeStamps);
@@ -148,36 +173,12 @@
}
} while (cm()->restart_for_overflow());
- double counting_start_time = os::elapsedVTime();
- if (!cm()->has_aborted()) {
- double count_start_sec = os::elapsedTime();
- if (PrintGC) {
- gclog_or_tty->date_stamp(PrintGCDateStamps);
- gclog_or_tty->stamp(PrintGCTimeStamps);
- gclog_or_tty->print_cr("[GC concurrent-count-start]");
- }
-
- _sts.join();
- _cm->calcDesiredRegions();
- _sts.leave();
-
- if (!cm()->has_aborted()) {
- double count_end_sec = os::elapsedTime();
- if (PrintGC) {
- gclog_or_tty->date_stamp(PrintGCDateStamps);
- gclog_or_tty->stamp(PrintGCTimeStamps);
- gclog_or_tty->print_cr("[GC concurrent-count-end, %1.7lf]",
- count_end_sec - count_start_sec);
- }
- }
- }
-
double end_time = os::elapsedVTime();
- _vtime_count_accum += (end_time - counting_start_time);
// Update the total virtual time before doing this, since it will try
// to measure it to get the vtime for this marking. We purposely
// neglect the presumably-short "completeCleanup" phase here.
_vtime_accum = (end_time - _vtime_start);
+
if (!cm()->has_aborted()) {
if (g1_policy->adaptive_young_list_length()) {
double now = os::elapsedTime();
--- a/hotspot/src/share/vm/gc_implementation/g1/concurrentMarkThread.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/concurrentMarkThread.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2012, 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
@@ -40,7 +40,6 @@
double _vtime_accum; // Accumulated virtual time.
double _vtime_mark_accum;
- double _vtime_count_accum;
public:
virtual void run();
@@ -69,8 +68,6 @@
double vtime_accum();
// Marking virtual time so far
double vtime_mark_accum();
- // Counting virtual time so far.
- double vtime_count_accum() { return _vtime_count_accum; }
ConcurrentMark* cm() { return _cm; }
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -174,13 +174,10 @@
}
};
-YoungList::YoungList(G1CollectedHeap* g1h)
- : _g1h(g1h), _head(NULL),
- _length(0),
- _last_sampled_rs_lengths(0),
- _survivor_head(NULL), _survivor_tail(NULL), _survivor_length(0)
-{
- guarantee( check_list_empty(false), "just making sure..." );
+YoungList::YoungList(G1CollectedHeap* g1h) :
+ _g1h(g1h), _head(NULL), _length(0), _last_sampled_rs_lengths(0),
+ _survivor_head(NULL), _survivor_tail(NULL), _survivor_length(0) {
+ guarantee(check_list_empty(false), "just making sure...");
}
void YoungList::push_region(HeapRegion *hr) {
@@ -1029,6 +1026,15 @@
assert(isHumongous(word_size), "attempt_allocation_humongous() "
"should only be called for humongous allocations");
+ // Humongous objects can exhaust the heap quickly, so we should check if we
+ // need to start a marking cycle at each humongous object allocation. We do
+ // the check before we do the actual allocation. The reason for doing it
+ // before the allocation is that we avoid having to keep track of the newly
+ // allocated memory while we do a GC.
+ if (g1_policy()->need_to_start_conc_mark("concurrent humongous allocation", word_size)) {
+ collect(GCCause::_g1_humongous_allocation);
+ }
+
// We will loop until a) we manage to successfully perform the
// allocation or b) we successfully schedule a collection which
// fails to perform the allocation. b) is the only case when we'll
@@ -1111,7 +1117,11 @@
return _mutator_alloc_region.attempt_allocation_locked(word_size,
false /* bot_updates */);
} else {
- return humongous_obj_allocate(word_size);
+ HeapWord* result = humongous_obj_allocate(word_size);
+ if (result != NULL && g1_policy()->need_to_start_conc_mark("STW humongous allocation")) {
+ g1_policy()->set_initiate_conc_mark_if_possible();
+ }
+ return result;
}
ShouldNotReachHere();
@@ -1257,7 +1267,18 @@
double start = os::elapsedTime();
g1_policy()->record_full_collection_start();
+ // Note: When we have a more flexible GC logging framework that
+ // allows us to add optional attributes to a GC log record we
+ // could consider timing and reporting how long we wait in the
+ // following two methods.
wait_while_free_regions_coming();
+ // If we start the compaction before the CM threads finish
+ // scanning the root regions we might trip them over as we'll
+ // be moving objects / updating references. So let's wait until
+ // they are done. By telling them to abort, they should complete
+ // early.
+ _cm->root_regions()->abort();
+ _cm->root_regions()->wait_until_scan_finished();
append_secondary_free_list_if_not_empty_with_lock();
gc_prologue(true);
@@ -1286,7 +1307,8 @@
ref_processor_cm()->verify_no_references_recorded();
// Abandon current iterations of concurrent marking and concurrent
- // refinement, if any are in progress.
+ // refinement, if any are in progress. We have to do this before
+ // wait_until_scan_finished() below.
concurrent_mark()->abort();
// Make sure we'll choose a new allocation region afterwards.
@@ -2295,7 +2317,8 @@
bool G1CollectedHeap::should_do_concurrent_full_gc(GCCause::Cause cause) {
return
((cause == GCCause::_gc_locker && GCLockerInvokesConcurrent) ||
- (cause == GCCause::_java_lang_system_gc && ExplicitGCInvokesConcurrent));
+ (cause == GCCause::_java_lang_system_gc && ExplicitGCInvokesConcurrent) ||
+ cause == GCCause::_g1_humongous_allocation);
}
#ifndef PRODUCT
@@ -3545,19 +3568,25 @@
verify_region_sets_optional();
verify_dirty_young_regions();
+ // This call will decide whether this pause is an initial-mark
+ // pause. If it is, during_initial_mark_pause() will return true
+ // for the duration of this pause.
+ g1_policy()->decide_on_conc_mark_initiation();
+
+ // We do not allow initial-mark to be piggy-backed on a mixed GC.
+ assert(!g1_policy()->during_initial_mark_pause() ||
+ g1_policy()->gcs_are_young(), "sanity");
+
+ // We also do not allow mixed GCs during marking.
+ assert(!mark_in_progress() || g1_policy()->gcs_are_young(), "sanity");
+
+ // Record whether this pause is an initial mark. When the current
+ // thread has completed its logging output and it's safe to signal
+ // the CM thread, the flag's value in the policy has been reset.
+ bool should_start_conc_mark = g1_policy()->during_initial_mark_pause();
+
+ // Inner scope for scope based logging, timers, and stats collection
{
- // This call will decide whether this pause is an initial-mark
- // pause. If it is, during_initial_mark_pause() will return true
- // for the duration of this pause.
- g1_policy()->decide_on_conc_mark_initiation();
-
- // We do not allow initial-mark to be piggy-backed on a mixed GC.
- assert(!g1_policy()->during_initial_mark_pause() ||
- g1_policy()->gcs_are_young(), "sanity");
-
- // We also do not allow mixed GCs during marking.
- assert(!mark_in_progress() || g1_policy()->gcs_are_young(), "sanity");
-
char verbose_str[128];
sprintf(verbose_str, "GC pause ");
if (g1_policy()->gcs_are_young()) {
@@ -3613,7 +3642,6 @@
Universe::verify(/* allow dirty */ false,
/* silent */ false,
/* option */ VerifyOption_G1UsePrevMarking);
-
}
COMPILER2_PRESENT(DerivedPointerTable::clear());
@@ -3656,6 +3684,18 @@
g1_policy()->record_collection_pause_start(start_time_sec,
start_used_bytes);
+ double scan_wait_start = os::elapsedTime();
+ // We have to wait until the CM threads finish scanning the
+ // root regions as it's the only way to ensure that all the
+ // objects on them have been correctly scanned before we start
+ // moving them during the GC.
+ bool waited = _cm->root_regions()->wait_until_scan_finished();
+ if (waited) {
+ double scan_wait_end = os::elapsedTime();
+ double wait_time_ms = (scan_wait_end - scan_wait_start) * 1000.0;
+ g1_policy()->record_root_region_scan_wait_time(wait_time_ms);
+ }
+
#if YOUNG_LIST_VERBOSE
gclog_or_tty->print_cr("\nAfter recording pause start.\nYoung_list:");
_young_list->print();
@@ -3765,16 +3805,14 @@
}
if (g1_policy()->during_initial_mark_pause()) {
+ // We have to do this before we notify the CM threads that
+ // they can start working to make sure that all the
+ // appropriate initialization is done on the CM object.
concurrent_mark()->checkpointRootsInitialPost();
set_marking_started();
- // CAUTION: after the doConcurrentMark() call below,
- // the concurrent marking thread(s) could be running
- // concurrently with us. Make sure that anything after
- // this point does not assume that we are the only GC thread
- // running. Note: of course, the actual marking work will
- // not start until the safepoint itself is released in
- // ConcurrentGCThread::safepoint_desynchronize().
- doConcurrentMark();
+ // Note that we don't actually trigger the CM thread at
+ // this point. We do that later when we're sure that
+ // the current thread has completed its logging output.
}
allocate_dummy_regions();
@@ -3884,6 +3922,15 @@
}
}
+ // The closing of the inner scope, immediately above, will complete
+ // the PrintGC logging output. The record_collection_pause_end() call
+ // above will complete the logging output of PrintGCDetails.
+ //
+ // It is not yet to safe, however, to tell the concurrent mark to
+ // start as we have some optional output below. We don't want the
+ // output from the concurrent mark thread interfering with this
+ // logging output either.
+
_hrs.verify_optional();
verify_region_sets_optional();
@@ -3901,6 +3948,21 @@
g1_rem_set()->print_summary_info();
}
+ // It should now be safe to tell the concurrent mark thread to start
+ // without its logging output interfering with the logging output
+ // that came from the pause.
+
+ if (should_start_conc_mark) {
+ // CAUTION: after the doConcurrentMark() call below,
+ // the concurrent marking thread(s) could be running
+ // concurrently with us. Make sure that anything after
+ // this point does not assume that we are the only GC thread
+ // running. Note: of course, the actual marking work will
+ // not start until the safepoint itself is released in
+ // ConcurrentGCThread::safepoint_desynchronize().
+ doConcurrentMark();
+ }
+
return true;
}
@@ -4162,7 +4224,7 @@
G1ParGCAllocBuffer::G1ParGCAllocBuffer(size_t gclab_word_size) :
ParGCAllocBuffer(gclab_word_size), _retired(false) { }
-G1ParScanThreadState::G1ParScanThreadState(G1CollectedHeap* g1h, int queue_num)
+G1ParScanThreadState::G1ParScanThreadState(G1CollectedHeap* g1h, uint queue_num)
: _g1h(g1h),
_refs(g1h->task_queue(queue_num)),
_dcq(&g1h->dirty_card_queue_set()),
@@ -4283,6 +4345,7 @@
G1ParScanThreadState* par_scan_state) :
_g1(g1), _g1_rem(_g1->g1_rem_set()), _cm(_g1->concurrent_mark()),
_par_scan_state(par_scan_state),
+ _worker_id(par_scan_state->queue_num()),
_during_initial_mark(_g1->g1_policy()->during_initial_mark_pause()),
_mark_in_progress(_g1->mark_in_progress()) { }
@@ -4294,7 +4357,7 @@
#endif // ASSERT
// We know that the object is not moving so it's safe to read its size.
- _cm->grayRoot(obj, (size_t) obj->size());
+ _cm->grayRoot(obj, (size_t) obj->size(), _worker_id);
}
void G1ParCopyHelper::mark_forwarded_object(oop from_obj, oop to_obj) {
@@ -4316,7 +4379,7 @@
// worker so we cannot trust that its to-space image is
// well-formed. So we have to read its size from its from-space
// image which we know should not be changing.
- _cm->grayRoot(to_obj, (size_t) from_obj->size());
+ _cm->grayRoot(to_obj, (size_t) from_obj->size(), _worker_id);
}
oop G1ParCopyHelper::copy_to_survivor_space(oop old) {
@@ -4406,6 +4469,8 @@
assert(barrier != G1BarrierRS || obj != NULL,
"Precondition: G1BarrierRS implies obj is non-NULL");
+ assert(_worker_id == _par_scan_state->queue_num(), "sanity");
+
// here the null check is implicit in the cset_fast_test() test
if (_g1->in_cset_fast_test(obj)) {
oop forwardee;
@@ -4424,7 +4489,7 @@
// When scanning the RS, we only care about objs in CS.
if (barrier == G1BarrierRS) {
- _par_scan_state->update_rs(_from, p, _par_scan_state->queue_num());
+ _par_scan_state->update_rs(_from, p, _worker_id);
}
} else {
// The object is not in collection set. If we're a root scanning
@@ -4436,7 +4501,7 @@
}
if (barrier == G1BarrierEvac && obj != NULL) {
- _par_scan_state->update_rs(_from, p, _par_scan_state->queue_num());
+ _par_scan_state->update_rs(_from, p, _worker_id);
}
if (do_gen_barrier && obj != NULL) {
@@ -5666,16 +5731,6 @@
// And the region is empty.
assert(!used_mr.is_empty(), "Should not have empty regions in a CS.");
-
- // If marking is in progress then clear any objects marked in
- // the current region. Note mark_in_progress() returns false,
- // even during an initial mark pause, until the set_marking_started()
- // call which takes place later in the pause.
- if (mark_in_progress()) {
- assert(!g1_policy()->during_initial_mark_pause(), "sanity");
- _cm->nextMarkBitMap()->clearRange(used_mr);
- }
-
free_region(cur, &pre_used, &local_free_list, false /* par */);
} else {
cur->uninstall_surv_rate_group();
@@ -5742,8 +5797,9 @@
}
void G1CollectedHeap::reset_free_regions_coming() {
+ assert(free_regions_coming(), "pre-condition");
+
{
- assert(free_regions_coming(), "pre-condition");
MutexLockerEx x(SecondaryFreeList_lock, Mutex::_no_safepoint_check_flag);
_free_regions_coming = false;
SecondaryFreeList_lock->notify_all();
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -355,6 +355,7 @@
// explicitly started if:
// (a) cause == _gc_locker and +GCLockerInvokesConcurrent, or
// (b) cause == _java_lang_system_gc and +ExplicitGCInvokesConcurrent.
+ // (c) cause == _g1_humongous_allocation
bool should_do_concurrent_full_gc(GCCause::Cause cause);
// Keeps track of how many "full collections" (i.e., Full GCs or
@@ -1172,6 +1173,10 @@
_old_set.remove(hr);
}
+ size_t non_young_capacity_bytes() {
+ return _old_set.total_capacity_bytes() + _humongous_set.total_capacity_bytes();
+ }
+
void set_free_regions_coming();
void reset_free_regions_coming();
bool free_regions_coming() { return _free_regions_coming; }
@@ -1904,7 +1909,7 @@
G1ParScanPartialArrayClosure* _partial_scan_cl;
int _hash_seed;
- int _queue_num;
+ uint _queue_num;
size_t _term_attempts;
@@ -1948,7 +1953,7 @@
}
public:
- G1ParScanThreadState(G1CollectedHeap* g1h, int queue_num);
+ G1ParScanThreadState(G1CollectedHeap* g1h, uint queue_num);
~G1ParScanThreadState() {
FREE_C_HEAP_ARRAY(size_t, _surviving_young_words_base);
@@ -2040,7 +2045,7 @@
}
int* hash_seed() { return &_hash_seed; }
- int queue_num() { return _queue_num; }
+ uint queue_num() { return _queue_num; }
size_t term_attempts() const { return _term_attempts; }
void note_term_attempt() { _term_attempts++; }
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -141,6 +141,7 @@
_cur_clear_ct_time_ms(0.0),
_mark_closure_time_ms(0.0),
+ _root_region_scan_wait_time_ms(0.0),
_cur_ref_proc_time_ms(0.0),
_cur_ref_enq_time_ms(0.0),
@@ -213,8 +214,6 @@
_survivor_bytes_before_gc(0),
_capacity_before_gc(0),
- _prev_collection_pause_used_at_end_bytes(0),
-
_eden_cset_region_length(0),
_survivor_cset_region_length(0),
_old_cset_region_length(0),
@@ -905,19 +904,10 @@
gclog_or_tty->print(" (%s)", gcs_are_young() ? "young" : "mixed");
}
- if (!during_initial_mark_pause()) {
- // We only need to do this here as the policy will only be applied
- // to the GC we're about to start. so, no point is calculating this
- // every time we calculate / recalculate the target young length.
- update_survivors_policy();
- } else {
- // The marking phase has a "we only copy implicitly live
- // objects during marking" invariant. The easiest way to ensure it
- // holds is not to allocate any survivor regions and tenure all
- // objects. In the future we might change this and handle survivor
- // regions specially during marking.
- tenure_all_objects();
- }
+ // We only need to do this here as the policy will only be applied
+ // to the GC we're about to start. so, no point is calculating this
+ // every time we calculate / recalculate the target young length.
+ update_survivors_policy();
assert(_g1->used() == _g1->recalculate_used(),
err_msg("sanity, used: "SIZE_FORMAT" recalculate_used: "SIZE_FORMAT,
@@ -969,6 +959,9 @@
// This is initialized to zero here and is set during
// the evacuation pause if marking is in progress.
_cur_satb_drain_time_ms = 0.0;
+ // This is initialized to zero here and is set during the evacuation
+ // pause if we actually waited for the root region scanning to finish.
+ _root_region_scan_wait_time_ms = 0.0;
_last_gc_was_young = false;
@@ -1140,6 +1133,50 @@
return ret;
}
+bool G1CollectorPolicy::need_to_start_conc_mark(const char* source, size_t alloc_word_size) {
+ if (_g1->concurrent_mark()->cmThread()->during_cycle()) {
+ return false;
+ }
+
+ size_t marking_initiating_used_threshold =
+ (_g1->capacity() / 100) * InitiatingHeapOccupancyPercent;
+ size_t cur_used_bytes = _g1->non_young_capacity_bytes();
+ size_t alloc_byte_size = alloc_word_size * HeapWordSize;
+
+ if ((cur_used_bytes + alloc_byte_size) > marking_initiating_used_threshold) {
+ if (gcs_are_young()) {
+ ergo_verbose5(ErgoConcCycles,
+ "request concurrent cycle initiation",
+ ergo_format_reason("occupancy higher than threshold")
+ ergo_format_byte("occupancy")
+ ergo_format_byte("allocation request")
+ ergo_format_byte_perc("threshold")
+ ergo_format_str("source"),
+ cur_used_bytes,
+ alloc_byte_size,
+ marking_initiating_used_threshold,
+ (double) InitiatingHeapOccupancyPercent,
+ source);
+ return true;
+ } else {
+ ergo_verbose5(ErgoConcCycles,
+ "do not request concurrent cycle initiation",
+ ergo_format_reason("still doing mixed collections")
+ ergo_format_byte("occupancy")
+ ergo_format_byte("allocation request")
+ ergo_format_byte_perc("threshold")
+ ergo_format_str("source"),
+ cur_used_bytes,
+ alloc_byte_size,
+ marking_initiating_used_threshold,
+ (double) InitiatingHeapOccupancyPercent,
+ source);
+ }
+ }
+
+ return false;
+}
+
// Anything below that is considered to be zero
#define MIN_TIMER_GRANULARITY 0.0000001
@@ -1166,44 +1203,16 @@
#endif // PRODUCT
last_pause_included_initial_mark = during_initial_mark_pause();
- if (last_pause_included_initial_mark)
+ if (last_pause_included_initial_mark) {
record_concurrent_mark_init_end(0.0);
-
- size_t marking_initiating_used_threshold =
- (_g1->capacity() / 100) * InitiatingHeapOccupancyPercent;
-
- if (!_g1->mark_in_progress() && !_last_young_gc) {
- assert(!last_pause_included_initial_mark, "invariant");
- if (cur_used_bytes > marking_initiating_used_threshold) {
- if (cur_used_bytes > _prev_collection_pause_used_at_end_bytes) {
- assert(!during_initial_mark_pause(), "we should not see this here");
-
- ergo_verbose3(ErgoConcCycles,
- "request concurrent cycle initiation",
- ergo_format_reason("occupancy higher than threshold")
- ergo_format_byte("occupancy")
- ergo_format_byte_perc("threshold"),
- cur_used_bytes,
- marking_initiating_used_threshold,
- (double) InitiatingHeapOccupancyPercent);
-
- // Note: this might have already been set, if during the last
- // pause we decided to start a cycle but at the beginning of
- // this pause we decided to postpone it. That's OK.
- set_initiate_conc_mark_if_possible();
- } else {
- ergo_verbose2(ErgoConcCycles,
- "do not request concurrent cycle initiation",
- ergo_format_reason("occupancy lower than previous occupancy")
- ergo_format_byte("occupancy")
- ergo_format_byte("previous occupancy"),
- cur_used_bytes,
- _prev_collection_pause_used_at_end_bytes);
- }
- }
}
- _prev_collection_pause_used_at_end_bytes = cur_used_bytes;
+ if (!_last_young_gc && need_to_start_conc_mark("end of GC")) {
+ // Note: this might have already been set, if during the last
+ // pause we decided to start a cycle but at the beginning of
+ // this pause we decided to postpone it. That's OK.
+ set_initiate_conc_mark_if_possible();
+ }
_mmu_tracker->add_pause(end_time_sec - elapsed_ms/1000.0,
end_time_sec, false);
@@ -1257,6 +1266,10 @@
// is in progress.
other_time_ms -= _cur_satb_drain_time_ms;
+ // Subtract the root region scanning wait time. It's initialized to
+ // zero at the start of the pause.
+ other_time_ms -= _root_region_scan_wait_time_ms;
+
if (parallel) {
other_time_ms -= _cur_collection_par_time_ms;
} else {
@@ -1289,6 +1302,8 @@
// each other. Therefore we unconditionally record the SATB drain
// time - even if it's zero.
body_summary->record_satb_drain_time_ms(_cur_satb_drain_time_ms);
+ body_summary->record_root_region_scan_wait_time_ms(
+ _root_region_scan_wait_time_ms);
body_summary->record_ext_root_scan_time_ms(ext_root_scan_time);
body_summary->record_satb_filtering_time_ms(satb_filtering_time);
@@ -1385,6 +1400,9 @@
(last_pause_included_initial_mark) ? " (initial-mark)" : "",
elapsed_ms / 1000.0);
+ if (_root_region_scan_wait_time_ms > 0.0) {
+ print_stats(1, "Root Region Scan Waiting", _root_region_scan_wait_time_ms);
+ }
if (parallel) {
print_stats(1, "Parallel Time", _cur_collection_par_time_ms);
print_par_stats(2, "GC Worker Start", _par_last_gc_worker_start_times_ms);
@@ -1988,6 +2006,7 @@
if (summary->get_total_seq()->num() > 0) {
print_summary_sd(0, "Evacuation Pauses", summary->get_total_seq());
if (body_summary != NULL) {
+ print_summary(1, "Root Region Scan Wait", body_summary->get_root_region_scan_wait_seq());
if (parallel) {
print_summary(1, "Parallel Time", body_summary->get_parallel_seq());
print_summary(2, "Ext Root Scanning", body_summary->get_ext_root_scan_seq());
@@ -2029,15 +2048,17 @@
// parallel
NumberSeq* other_parts[] = {
body_summary->get_satb_drain_seq(),
+ body_summary->get_root_region_scan_wait_seq(),
body_summary->get_parallel_seq(),
body_summary->get_clear_ct_seq()
};
calc_other_times_ms = NumberSeq(summary->get_total_seq(),
- 3, other_parts);
+ 4, other_parts);
} else {
// serial
NumberSeq* other_parts[] = {
body_summary->get_satb_drain_seq(),
+ body_summary->get_root_region_scan_wait_seq(),
body_summary->get_update_rs_seq(),
body_summary->get_ext_root_scan_seq(),
body_summary->get_satb_filtering_seq(),
@@ -2045,7 +2066,7 @@
body_summary->get_obj_copy_seq()
};
calc_other_times_ms = NumberSeq(summary->get_total_seq(),
- 6, other_parts);
+ 7, other_parts);
}
check_other_times(1, summary->get_other_seq(), &calc_other_times_ms);
}
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -65,6 +65,7 @@
class MainBodySummary: public CHeapObj {
define_num_seq(satb_drain) // optional
+ define_num_seq(root_region_scan_wait)
define_num_seq(parallel) // parallel only
define_num_seq(ext_root_scan)
define_num_seq(satb_filtering)
@@ -177,7 +178,6 @@
double _cur_collection_start_sec;
size_t _cur_collection_pause_used_at_start_bytes;
size_t _cur_collection_pause_used_regions_at_start;
- size_t _prev_collection_pause_used_at_end_bytes;
double _cur_collection_par_time_ms;
double _cur_satb_drain_time_ms;
double _cur_clear_ct_time_ms;
@@ -716,6 +716,7 @@
double _mark_remark_start_sec;
double _mark_cleanup_start_sec;
double _mark_closure_time_ms;
+ double _root_region_scan_wait_time_ms;
// Update the young list target length either by setting it to the
// desired fixed value or by calculating it using G1's pause
@@ -800,6 +801,8 @@
GenRemSet::Name rem_set_name() { return GenRemSet::CardTable; }
+ bool need_to_start_conc_mark(const char* source, size_t alloc_word_size = 0);
+
// Update the heuristic info to record a collection pause of the given
// start time, where the given number of bytes were used at the start.
// This may involve changing the desired size of a collection set.
@@ -816,6 +819,10 @@
_mark_closure_time_ms = mark_closure_time_ms;
}
+ void record_root_region_scan_wait_time(double time_ms) {
+ _root_region_scan_wait_time_ms = time_ms;
+ }
+
void record_concurrent_mark_remark_start();
void record_concurrent_mark_remark_end();
@@ -1146,11 +1153,6 @@
_survivor_surv_rate_group->stop_adding_regions();
}
- void tenure_all_objects() {
- _max_survivor_regions = 0;
- _tenuring_threshold = 0;
- }
-
void record_survivor_regions(size_t regions,
HeapRegion* head,
HeapRegion* tail) {
--- a/hotspot/src/share/vm/gc_implementation/g1/g1EvacFailure.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1EvacFailure.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -70,16 +70,20 @@
OopsInHeapRegionClosure *_update_rset_cl;
bool _during_initial_mark;
bool _during_conc_mark;
+ uint _worker_id;
+
public:
RemoveSelfForwardPtrObjClosure(G1CollectedHeap* g1, ConcurrentMark* cm,
HeapRegion* hr,
OopsInHeapRegionClosure* update_rset_cl,
bool during_initial_mark,
- bool during_conc_mark) :
+ bool during_conc_mark,
+ uint worker_id) :
_g1(g1), _cm(cm), _hr(hr), _marked_bytes(0),
_update_rset_cl(update_rset_cl),
_during_initial_mark(during_initial_mark),
- _during_conc_mark(during_conc_mark) { }
+ _during_conc_mark(during_conc_mark),
+ _worker_id(worker_id) { }
size_t marked_bytes() { return _marked_bytes; }
@@ -123,7 +127,7 @@
// explicitly and all objects in the CSet are considered
// (implicitly) live. So, we won't mark them explicitly and
// we'll leave them over NTAMS.
- _cm->markNext(obj);
+ _cm->grayRoot(obj, obj_size, _worker_id, _hr);
}
_marked_bytes += (obj_size * HeapWordSize);
obj->set_mark(markOopDesc::prototype());
@@ -155,12 +159,14 @@
G1CollectedHeap* _g1h;
ConcurrentMark* _cm;
OopsInHeapRegionClosure *_update_rset_cl;
+ uint _worker_id;
public:
RemoveSelfForwardPtrHRClosure(G1CollectedHeap* g1h,
- OopsInHeapRegionClosure* update_rset_cl) :
+ OopsInHeapRegionClosure* update_rset_cl,
+ uint worker_id) :
_g1h(g1h), _update_rset_cl(update_rset_cl),
- _cm(_g1h->concurrent_mark()) { }
+ _worker_id(worker_id), _cm(_g1h->concurrent_mark()) { }
bool doHeapRegion(HeapRegion *hr) {
bool during_initial_mark = _g1h->g1_policy()->during_initial_mark_pause();
@@ -173,7 +179,8 @@
if (hr->evacuation_failed()) {
RemoveSelfForwardPtrObjClosure rspc(_g1h, _cm, hr, _update_rset_cl,
during_initial_mark,
- during_conc_mark);
+ during_conc_mark,
+ _worker_id);
MemRegion mr(hr->bottom(), hr->end());
// We'll recreate the prev marking info so we'll first clear
@@ -226,7 +233,7 @@
update_rset_cl = &immediate_update;
}
- RemoveSelfForwardPtrHRClosure rsfp_cl(_g1h, update_rset_cl);
+ RemoveSelfForwardPtrHRClosure rsfp_cl(_g1h, update_rset_cl, 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/g1MonitoringSupport.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1MonitoringSupport.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -89,16 +89,15 @@
//
// * Min Capacity
//
-// We set this to 0 for all spaces. We could consider setting the old
-// min capacity to the min capacity of the heap (see 7078465).
+// We set this to 0 for all spaces.
//
// * Max Capacity
//
// For jstat, we set the max capacity of all spaces to heap_capacity,
-// given that we don't always have a reasonably upper bound on how big
-// each space can grow. For the memory pools, we actually make the max
-// capacity undefined. We could consider setting the old max capacity
-// to the max capacity of the heap (see 7078465).
+// given that we don't always have a reasonable upper bound on how big
+// each space can grow. For the memory pools, we make the max
+// capacity undefined with the exception of the old memory pool for
+// which we make the max capacity same as the max heap capacity.
//
// If we had more accurate occupancy / capacity information per
// region set the above calculations would be greatly simplified and
--- a/hotspot/src/share/vm/gc_implementation/g1/g1OopClosures.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1OopClosures.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -51,6 +51,7 @@
G1RemSet* _g1_rem;
ConcurrentMark* _cm;
G1ParScanThreadState* _par_scan_state;
+ uint _worker_id;
bool _during_initial_mark;
bool _mark_in_progress;
public:
@@ -219,6 +220,7 @@
// Closure for iterating over object fields during concurrent marking
class G1CMOopClosure : public OopClosure {
+private:
G1CollectedHeap* _g1h;
ConcurrentMark* _cm;
CMTask* _task;
@@ -229,4 +231,92 @@
virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
};
+// Closure to scan the root regions during concurrent marking
+class G1RootRegionScanClosure : public OopClosure {
+private:
+ G1CollectedHeap* _g1h;
+ ConcurrentMark* _cm;
+ uint _worker_id;
+public:
+ G1RootRegionScanClosure(G1CollectedHeap* g1h, ConcurrentMark* cm,
+ uint worker_id) :
+ _g1h(g1h), _cm(cm), _worker_id(worker_id) { }
+ template <class T> void do_oop_nv(T* p);
+ virtual void do_oop( oop* p) { do_oop_nv(p); }
+ virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
+};
+
+// Closure that applies the given two closures in sequence.
+// Used by the RSet refinement code (when updating RSets
+// during an evacuation pause) to record cards containing
+// pointers into the collection set.
+
+class G1Mux2Closure : public OopClosure {
+ OopClosure* _c1;
+ OopClosure* _c2;
+public:
+ G1Mux2Closure(OopClosure *c1, OopClosure *c2);
+ template <class T> void do_oop_nv(T* p);
+ virtual void do_oop(oop* p) { do_oop_nv(p); }
+ virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
+};
+
+// A closure that returns true if it is actually applied
+// to a reference
+
+class G1TriggerClosure : public OopClosure {
+ bool _triggered;
+public:
+ G1TriggerClosure();
+ bool triggered() const { return _triggered; }
+ template <class T> void do_oop_nv(T* p);
+ virtual void do_oop(oop* p) { do_oop_nv(p); }
+ virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
+};
+
+// A closure which uses a triggering closure to determine
+// whether to apply an oop closure.
+
+class G1InvokeIfNotTriggeredClosure: public OopClosure {
+ G1TriggerClosure* _trigger_cl;
+ OopClosure* _oop_cl;
+public:
+ G1InvokeIfNotTriggeredClosure(G1TriggerClosure* t, OopClosure* oc);
+ template <class T> void do_oop_nv(T* p);
+ virtual void do_oop(oop* p) { do_oop_nv(p); }
+ virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
+};
+
+class G1UpdateRSOrPushRefOopClosure: public OopClosure {
+ G1CollectedHeap* _g1;
+ G1RemSet* _g1_rem_set;
+ HeapRegion* _from;
+ OopsInHeapRegionClosure* _push_ref_cl;
+ bool _record_refs_into_cset;
+ int _worker_i;
+
+public:
+ G1UpdateRSOrPushRefOopClosure(G1CollectedHeap* g1h,
+ G1RemSet* rs,
+ OopsInHeapRegionClosure* push_ref_cl,
+ bool record_refs_into_cset,
+ int worker_i = 0);
+
+ void set_from(HeapRegion* from) {
+ assert(from != NULL, "from region must be non-NULL");
+ _from = from;
+ }
+
+ bool self_forwarded(oop obj) {
+ bool result = (obj->is_forwarded() && (obj->forwardee()== obj));
+ return result;
+ }
+
+ bool apply_to_weak_ref_discovered_field() { return true; }
+
+ template <class T> void do_oop_nv(T* p);
+ virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
+ virtual void do_oop(oop* p) { do_oop_nv(p); }
+};
+
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP
--- a/hotspot/src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2012, 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
@@ -39,7 +39,8 @@
// perf-critical inner loop.
#define FILTERINTOCSCLOSURE_DOHISTOGRAMCOUNT 0
-template <class T> inline void FilterIntoCSClosure::do_oop_nv(T* p) {
+template <class T>
+inline void FilterIntoCSClosure::do_oop_nv(T* p) {
T heap_oop = oopDesc::load_heap_oop(p);
if (!oopDesc::is_null(heap_oop) &&
_g1->obj_in_cs(oopDesc::decode_heap_oop_not_null(heap_oop))) {
@@ -53,7 +54,8 @@
#define FILTEROUTOFREGIONCLOSURE_DOHISTOGRAMCOUNT 0
-template <class T> inline void FilterOutOfRegionClosure::do_oop_nv(T* p) {
+template <class T>
+inline void FilterOutOfRegionClosure::do_oop_nv(T* p) {
T heap_oop = oopDesc::load_heap_oop(p);
if (!oopDesc::is_null(heap_oop)) {
HeapWord* obj_hw = (HeapWord*)oopDesc::decode_heap_oop_not_null(heap_oop);
@@ -67,7 +69,8 @@
}
// This closure is applied to the fields of the objects that have just been copied.
-template <class T> inline void G1ParScanClosure::do_oop_nv(T* p) {
+template <class T>
+inline void G1ParScanClosure::do_oop_nv(T* p) {
T heap_oop = oopDesc::load_heap_oop(p);
if (!oopDesc::is_null(heap_oop)) {
@@ -96,7 +99,8 @@
}
}
-template <class T> inline void G1ParPushHeapRSClosure::do_oop_nv(T* p) {
+template <class T>
+inline void G1ParPushHeapRSClosure::do_oop_nv(T* p) {
T heap_oop = oopDesc::load_heap_oop(p);
if (!oopDesc::is_null(heap_oop)) {
@@ -111,7 +115,8 @@
}
}
-template <class T> inline void G1CMOopClosure::do_oop_nv(T* p) {
+template <class T>
+inline void G1CMOopClosure::do_oop_nv(T* p) {
assert(_g1h->is_in_g1_reserved((HeapWord*) p), "invariant");
assert(!_g1h->is_on_master_free_list(
_g1h->heap_region_containing((HeapWord*) p)), "invariant");
@@ -125,4 +130,97 @@
_task->deal_with_reference(obj);
}
+template <class T>
+inline void G1RootRegionScanClosure::do_oop_nv(T* p) {
+ T heap_oop = oopDesc::load_heap_oop(p);
+ if (!oopDesc::is_null(heap_oop)) {
+ oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
+ HeapRegion* hr = _g1h->heap_region_containing((HeapWord*) obj);
+ if (hr != NULL) {
+ _cm->grayRoot(obj, obj->size(), _worker_id, hr);
+ }
+ }
+}
+
+template <class T>
+inline void G1Mux2Closure::do_oop_nv(T* p) {
+ // Apply first closure; then apply the second.
+ _c1->do_oop(p);
+ _c2->do_oop(p);
+}
+
+template <class T>
+inline void G1TriggerClosure::do_oop_nv(T* p) {
+ // Record that this closure was actually applied (triggered).
+ _triggered = true;
+}
+
+template <class T>
+inline void G1InvokeIfNotTriggeredClosure::do_oop_nv(T* p) {
+ if (!_trigger_cl->triggered()) {
+ _oop_cl->do_oop(p);
+ }
+}
+
+template <class T>
+inline void G1UpdateRSOrPushRefOopClosure::do_oop_nv(T* p) {
+ oop obj = oopDesc::load_decode_heap_oop(p);
+#ifdef ASSERT
+ // can't do because of races
+ // assert(obj == NULL || obj->is_oop(), "expected an oop");
+
+ // Do the safe subset of is_oop
+ if (obj != NULL) {
+#ifdef CHECK_UNHANDLED_OOPS
+ oopDesc* o = obj.obj();
+#else
+ oopDesc* o = obj;
+#endif // CHECK_UNHANDLED_OOPS
+ assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned");
+ assert(Universe::heap()->is_in_reserved(obj), "must be in heap");
+ }
+#endif // ASSERT
+
+ assert(_from != NULL, "from region must be non-NULL");
+
+ HeapRegion* to = _g1->heap_region_containing(obj);
+ if (to != NULL && _from != to) {
+ // The _record_refs_into_cset flag is true during the RSet
+ // updating part of an evacuation pause. It is false at all
+ // other times:
+ // * rebuilding the rembered sets after a full GC
+ // * during concurrent refinement.
+ // * updating the remembered sets of regions in the collection
+ // set in the event of an evacuation failure (when deferred
+ // updates are enabled).
+
+ if (_record_refs_into_cset && to->in_collection_set()) {
+ // We are recording references that point into the collection
+ // set and this particular reference does exactly that...
+ // If the referenced object has already been forwarded
+ // to itself, we are handling an evacuation failure and
+ // we have already visited/tried to copy this object
+ // there is no need to retry.
+ if (!self_forwarded(obj)) {
+ assert(_push_ref_cl != NULL, "should not be null");
+ // Push the reference in the refs queue of the G1ParScanThreadState
+ // instance for this worker thread.
+ _push_ref_cl->do_oop(p);
+ }
+
+ // Deferred updates to the CSet are either discarded (in the normal case),
+ // or processed (if an evacuation failure occurs) at the end
+ // of the collection.
+ // See G1RemSet::cleanup_after_oops_into_collection_set_do().
+ } else {
+ // We either don't care about pushing references that point into the
+ // collection set (i.e. we're not during an evacuation pause) _or_
+ // the reference doesn't point into the collection set. Either way
+ // we add the reference directly to the RSet of the region containing
+ // the referenced object.
+ _g1_rem_set->par_write_ref(_from, p, _worker_i);
+ }
+ }
+}
+
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2012, 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
@@ -569,40 +569,26 @@
static IntHistogram out_of_histo(50, 50);
-class TriggerClosure : public OopClosure {
- bool _trigger;
-public:
- TriggerClosure() : _trigger(false) { }
- bool value() const { return _trigger; }
- template <class T> void do_oop_nv(T* p) { _trigger = true; }
- virtual void do_oop(oop* p) { do_oop_nv(p); }
- virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
-};
+
+G1TriggerClosure::G1TriggerClosure() :
+ _triggered(false) { }
+
+G1InvokeIfNotTriggeredClosure::G1InvokeIfNotTriggeredClosure(G1TriggerClosure* t_cl,
+ OopClosure* oop_cl) :
+ _trigger_cl(t_cl), _oop_cl(oop_cl) { }
-class InvokeIfNotTriggeredClosure: public OopClosure {
- TriggerClosure* _t;
- OopClosure* _oc;
-public:
- InvokeIfNotTriggeredClosure(TriggerClosure* t, OopClosure* oc):
- _t(t), _oc(oc) { }
- template <class T> void do_oop_nv(T* p) {
- if (!_t->value()) _oc->do_oop(p);
- }
- virtual void do_oop(oop* p) { do_oop_nv(p); }
- virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
-};
+G1Mux2Closure::G1Mux2Closure(OopClosure *c1, OopClosure *c2) :
+ _c1(c1), _c2(c2) { }
-class Mux2Closure : public OopClosure {
- OopClosure* _c1;
- OopClosure* _c2;
-public:
- Mux2Closure(OopClosure *c1, OopClosure *c2) : _c1(c1), _c2(c2) { }
- template <class T> void do_oop_nv(T* p) {
- _c1->do_oop(p); _c2->do_oop(p);
- }
- virtual void do_oop(oop* p) { do_oop_nv(p); }
- virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
-};
+G1UpdateRSOrPushRefOopClosure::
+G1UpdateRSOrPushRefOopClosure(G1CollectedHeap* g1h,
+ G1RemSet* rs,
+ OopsInHeapRegionClosure* push_ref_cl,
+ bool record_refs_into_cset,
+ int worker_i) :
+ _g1(g1h), _g1_rem_set(rs), _from(NULL),
+ _record_refs_into_cset(record_refs_into_cset),
+ _push_ref_cl(push_ref_cl), _worker_i(worker_i) { }
bool G1RemSet::concurrentRefineOneCard_impl(jbyte* card_ptr, int worker_i,
bool check_for_refs_into_cset) {
@@ -629,17 +615,17 @@
assert((size_t)worker_i < n_workers(), "index of worker larger than _cset_rs_update_cl[].length");
oops_in_heap_closure = _cset_rs_update_cl[worker_i];
}
- UpdateRSOrPushRefOopClosure update_rs_oop_cl(_g1,
- _g1->g1_rem_set(),
- oops_in_heap_closure,
- check_for_refs_into_cset,
- worker_i);
+ G1UpdateRSOrPushRefOopClosure update_rs_oop_cl(_g1,
+ _g1->g1_rem_set(),
+ oops_in_heap_closure,
+ check_for_refs_into_cset,
+ worker_i);
update_rs_oop_cl.set_from(r);
- TriggerClosure trigger_cl;
+ G1TriggerClosure trigger_cl;
FilterIntoCSClosure into_cs_cl(NULL, _g1, &trigger_cl);
- InvokeIfNotTriggeredClosure invoke_cl(&trigger_cl, &into_cs_cl);
- Mux2Closure mux(&invoke_cl, &update_rs_oop_cl);
+ G1InvokeIfNotTriggeredClosure invoke_cl(&trigger_cl, &into_cs_cl);
+ G1Mux2Closure mux(&invoke_cl, &update_rs_oop_cl);
FilterOutOfRegionClosure filter_then_update_rs_oop_cl(r,
(check_for_refs_into_cset ?
@@ -688,7 +674,7 @@
_conc_refine_cards++;
}
- return trigger_cl.value();
+ return trigger_cl.triggered();
}
bool G1RemSet::concurrentRefineOneCard(jbyte* card_ptr, int worker_i,
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2012, 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
@@ -191,44 +191,5 @@
virtual void do_oop( oop* p) { do_oop_work(p); }
};
-class UpdateRSOrPushRefOopClosure: public OopClosure {
- G1CollectedHeap* _g1;
- G1RemSet* _g1_rem_set;
- HeapRegion* _from;
- OopsInHeapRegionClosure* _push_ref_cl;
- bool _record_refs_into_cset;
- int _worker_i;
-
- template <class T> void do_oop_work(T* p);
-
-public:
- UpdateRSOrPushRefOopClosure(G1CollectedHeap* g1h,
- G1RemSet* rs,
- OopsInHeapRegionClosure* push_ref_cl,
- bool record_refs_into_cset,
- int worker_i = 0) :
- _g1(g1h),
- _g1_rem_set(rs),
- _from(NULL),
- _record_refs_into_cset(record_refs_into_cset),
- _push_ref_cl(push_ref_cl),
- _worker_i(worker_i) { }
-
- void set_from(HeapRegion* from) {
- assert(from != NULL, "from region must be non-NULL");
- _from = from;
- }
-
- bool self_forwarded(oop obj) {
- bool result = (obj->is_forwarded() && (obj->forwardee()== obj));
- return result;
- }
-
- virtual void do_oop(narrowOop* p) { do_oop_work(p); }
- virtual void do_oop(oop* p) { do_oop_work(p); }
-
- bool apply_to_weak_ref_discovered_field() { return true; }
-};
-
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_HPP
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2012, 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
@@ -85,66 +85,4 @@
}
}
-template <class T>
-inline void UpdateRSOrPushRefOopClosure::do_oop_work(T* p) {
- oop obj = oopDesc::load_decode_heap_oop(p);
-#ifdef ASSERT
- // can't do because of races
- // assert(obj == NULL || obj->is_oop(), "expected an oop");
-
- // Do the safe subset of is_oop
- if (obj != NULL) {
-#ifdef CHECK_UNHANDLED_OOPS
- oopDesc* o = obj.obj();
-#else
- oopDesc* o = obj;
-#endif // CHECK_UNHANDLED_OOPS
- assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned");
- assert(Universe::heap()->is_in_reserved(obj), "must be in heap");
- }
-#endif // ASSERT
-
- assert(_from != NULL, "from region must be non-NULL");
-
- HeapRegion* to = _g1->heap_region_containing(obj);
- if (to != NULL && _from != to) {
- // The _record_refs_into_cset flag is true during the RSet
- // updating part of an evacuation pause. It is false at all
- // other times:
- // * rebuilding the rembered sets after a full GC
- // * during concurrent refinement.
- // * updating the remembered sets of regions in the collection
- // set in the event of an evacuation failure (when deferred
- // updates are enabled).
-
- if (_record_refs_into_cset && to->in_collection_set()) {
- // We are recording references that point into the collection
- // set and this particular reference does exactly that...
- // If the referenced object has already been forwarded
- // to itself, we are handling an evacuation failure and
- // we have already visited/tried to copy this object
- // there is no need to retry.
- if (!self_forwarded(obj)) {
- assert(_push_ref_cl != NULL, "should not be null");
- // Push the reference in the refs queue of the G1ParScanThreadState
- // instance for this worker thread.
- _push_ref_cl->do_oop(p);
- }
-
- // Deferred updates to the CSet are either discarded (in the normal case),
- // or processed (if an evacuation failure occurs) at the end
- // of the collection.
- // See G1RemSet::cleanup_after_oops_into_collection_set_do().
- } else {
- // We either don't care about pushing references that point into the
- // collection set (i.e. we're not during an evacuation pause) _or_
- // the reference doesn't point into the collection set. Either way
- // we add the reference directly to the RSet of the region containing
- // the referenced object.
- _g1_rem_set->par_write_ref(_from, p, _worker_i);
- }
- }
-}
-
-
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP
--- a/hotspot/src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2012, 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
@@ -32,12 +32,14 @@
// Forward declarations.
enum G1Barrier {
- G1BarrierNone, G1BarrierRS, G1BarrierEvac
+ G1BarrierNone,
+ G1BarrierRS,
+ G1BarrierEvac
};
-template<bool do_gen_barrier, G1Barrier barrier,
- bool do_mark_object>
+template<bool do_gen_barrier, G1Barrier barrier, bool do_mark_object>
class G1ParCopyClosure;
+
class G1ParScanClosure;
class G1ParPushHeapRSClosure;
@@ -46,6 +48,13 @@
class FilterIntoCSClosure;
class FilterOutOfRegionClosure;
class G1CMOopClosure;
+class G1RootRegionScanClosure;
+
+// Specialized oop closures from g1RemSet.cpp
+class G1Mux2Closure;
+class G1TriggerClosure;
+class G1InvokeIfNotTriggeredClosure;
+class G1UpdateRSOrPushRefOopClosure;
#ifdef FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES
#error "FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES already defined."
@@ -57,7 +66,12 @@
f(G1ParPushHeapRSClosure,_nv) \
f(FilterIntoCSClosure,_nv) \
f(FilterOutOfRegionClosure,_nv) \
- f(G1CMOopClosure,_nv)
+ f(G1CMOopClosure,_nv) \
+ f(G1RootRegionScanClosure,_nv) \
+ f(G1Mux2Closure,_nv) \
+ f(G1TriggerClosure,_nv) \
+ f(G1InvokeIfNotTriggeredClosure,_nv) \
+ f(G1UpdateRSOrPushRefOopClosure,_nv)
#ifdef FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES
#error "FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES already defined."
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -659,7 +659,7 @@
// If we're within a stop-world GC, then we might look at a card in a
// GC alloc region that extends onto a GC LAB, which may not be
// parseable. Stop such at the "saved_mark" of the region.
- if (G1CollectedHeap::heap()->is_gc_active()) {
+ if (g1h->is_gc_active()) {
mr = mr.intersection(used_region_at_save_marks());
} else {
mr = mr.intersection(used_region());
@@ -688,53 +688,63 @@
OrderAccess::storeload();
}
+ // Cache the boundaries of the memory region in some const locals
+ HeapWord* const start = mr.start();
+ HeapWord* const end = mr.end();
+
// We used to use "block_start_careful" here. But we're actually happy
// to update the BOT while we do this...
- HeapWord* cur = block_start(mr.start());
- assert(cur <= mr.start(), "Postcondition");
+ HeapWord* cur = block_start(start);
+ assert(cur <= start, "Postcondition");
+
+ oop obj;
- while (cur <= mr.start()) {
- if (oop(cur)->klass_or_null() == NULL) {
+ HeapWord* next = cur;
+ while (next <= start) {
+ cur = next;
+ obj = oop(cur);
+ if (obj->klass_or_null() == NULL) {
// Ran into an unparseable point.
return cur;
}
// Otherwise...
- int sz = oop(cur)->size();
- if (cur + sz > mr.start()) break;
- // Otherwise, go on.
- cur = cur + sz;
+ next = (cur + obj->size());
}
- oop obj;
- obj = oop(cur);
- // If we finish this loop...
- assert(cur <= mr.start()
- && obj->klass_or_null() != NULL
- && cur + obj->size() > mr.start(),
+
+ // If we finish the above loop...We have a parseable object that
+ // begins on or before the start of the memory region, and ends
+ // inside or spans the entire region.
+
+ assert(obj == oop(cur), "sanity");
+ assert(cur <= start &&
+ obj->klass_or_null() != NULL &&
+ (cur + obj->size()) > start,
"Loop postcondition");
+
if (!g1h->is_obj_dead(obj)) {
obj->oop_iterate(cl, mr);
}
- HeapWord* next;
- while (cur < mr.end()) {
+ while (cur < end) {
obj = oop(cur);
if (obj->klass_or_null() == NULL) {
// Ran into an unparseable point.
return cur;
};
+
// Otherwise:
next = (cur + obj->size());
+
if (!g1h->is_obj_dead(obj)) {
- if (next < mr.end()) {
+ if (next < end || !obj->is_objArray()) {
+ // This object either does not span the MemRegion
+ // boundary, or if it does it's not an array.
+ // Apply closure to whole object.
obj->oop_iterate(cl);
} else {
- // this obj spans the boundary. If it's an array, stop at the
- // boundary.
- if (obj->is_objArray()) {
- obj->oop_iterate(cl, mr);
- } else {
- obj->oop_iterate(cl);
- }
+ // This obj is an array that spans the boundary.
+ // Stop at the boundary.
+ obj->oop_iterate(cl, mr);
}
}
cur = next;
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -374,7 +374,9 @@
ParVerifyClaimValue = 4,
RebuildRSClaimValue = 5,
CompleteMarkCSetClaimValue = 6,
- ParEvacFailureClaimValue = 7
+ ParEvacFailureClaimValue = 7,
+ AggregateCountClaimValue = 8,
+ VerifyCountClaimValue = 9
};
inline HeapWord* par_allocate_no_bot_updates(size_t word_size) {
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.inline.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.inline.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -72,10 +72,11 @@
}
inline void HeapRegion::note_start_of_copying(bool during_initial_mark) {
- if (during_initial_mark) {
- if (is_survivor()) {
- assert(false, "should not allocate survivors during IM");
- } else {
+ if (is_survivor()) {
+ // This is how we always allocate survivors.
+ assert(_next_top_at_mark_start == bottom(), "invariant");
+ } else {
+ if (during_initial_mark) {
// During initial-mark we'll explicitly mark any objects on old
// regions that are pointed to by roots. Given that explicit
// marks only make sense under NTAMS it'd be nice if we could
@@ -84,11 +85,6 @@
// NTAMS to the end of the region so all marks will be below
// NTAMS. We'll set it to the actual top when we retire this region.
_next_top_at_mark_start = end();
- }
- } else {
- if (is_survivor()) {
- // This is how we always allocate survivors.
- assert(_next_top_at_mark_start == bottom(), "invariant");
} else {
// We could have re-used this old region as to-space over a
// couple of GCs since the start of the concurrent marking
@@ -101,19 +97,15 @@
}
inline void HeapRegion::note_end_of_copying(bool during_initial_mark) {
- if (during_initial_mark) {
- if (is_survivor()) {
- assert(false, "should not allocate survivors during IM");
- } else {
+ if (is_survivor()) {
+ // This is how we always allocate survivors.
+ assert(_next_top_at_mark_start == bottom(), "invariant");
+ } else {
+ if (during_initial_mark) {
// See the comment for note_start_of_copying() for the details
// on this.
assert(_next_top_at_mark_start == end(), "pre-condition");
_next_top_at_mark_start = top();
- }
- } else {
- if (is_survivor()) {
- // This is how we always allocate survivors.
- assert(_next_top_at_mark_start == bottom(), "invariant");
} else {
// See the comment for note_start_of_copying() for the details
// on this.
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2012, 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
@@ -59,6 +59,7 @@
class HeapRegionSetBase VALUE_OBJ_CLASS_SPEC {
friend class hrs_ext_msg;
friend class HRSPhaseSetter;
+ friend class VMStructs;
protected:
static size_t calculate_region_num(HeapRegion* hr);
--- a/hotspot/src/share/vm/gc_implementation/g1/vmStructs_g1.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/vmStructs_g1.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2012, 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
@@ -40,6 +40,8 @@
nonstatic_field(G1CollectedHeap, _g1_committed, MemRegion) \
nonstatic_field(G1CollectedHeap, _summary_bytes_used, size_t) \
nonstatic_field(G1CollectedHeap, _g1mm, G1MonitoringSupport*) \
+ nonstatic_field(G1CollectedHeap, _old_set, HeapRegionSetBase) \
+ nonstatic_field(G1CollectedHeap, _humongous_set, HeapRegionSetBase) \
\
nonstatic_field(G1MonitoringSupport, _eden_committed, size_t) \
nonstatic_field(G1MonitoringSupport, _eden_used, size_t) \
@@ -47,6 +49,10 @@
nonstatic_field(G1MonitoringSupport, _survivor_used, size_t) \
nonstatic_field(G1MonitoringSupport, _old_committed, size_t) \
nonstatic_field(G1MonitoringSupport, _old_used, size_t) \
+ \
+ nonstatic_field(HeapRegionSetBase, _length, size_t) \
+ nonstatic_field(HeapRegionSetBase, _region_num, size_t) \
+ nonstatic_field(HeapRegionSetBase, _total_used_bytes, size_t) \
#define VM_TYPES_G1(declare_type, declare_toplevel_type) \
@@ -55,6 +61,7 @@
\
declare_type(HeapRegion, ContiguousSpace) \
declare_toplevel_type(HeapRegionSeq) \
+ declare_toplevel_type(HeapRegionSetBase) \
declare_toplevel_type(G1MonitoringSupport) \
\
declare_toplevel_type(G1CollectedHeap*) \
--- a/hotspot/src/share/vm/gc_implementation/g1/vm_operations_g1.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/vm_operations_g1.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2012, 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
@@ -74,8 +74,9 @@
G1CollectedHeap* g1h = G1CollectedHeap::heap();
assert(!_should_initiate_conc_mark ||
((_gc_cause == GCCause::_gc_locker && GCLockerInvokesConcurrent) ||
- (_gc_cause == GCCause::_java_lang_system_gc && ExplicitGCInvokesConcurrent)),
- "only a GC locker or a System.gc() induced GC should start a cycle");
+ (_gc_cause == GCCause::_java_lang_system_gc && ExplicitGCInvokesConcurrent) ||
+ _gc_cause == GCCause::_g1_humongous_allocation),
+ "only a GC locker, a System.gc() or a hum allocation induced GC should start a cycle");
if (_word_size > 0) {
// An allocation has been requested. So, try to do that first.
--- a/hotspot/src/share/vm/gc_interface/gcCause.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_interface/gcCause.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2012, 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
@@ -84,6 +84,9 @@
case _g1_inc_collection_pause:
return "G1 Evacuation Pause";
+ case _g1_humongous_allocation:
+ return "G1 Humongous Allocation";
+
case _last_ditch_collection:
return "Last ditch collection";
--- a/hotspot/src/share/vm/gc_interface/gcCause.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/gc_interface/gcCause.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2012, 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
@@ -66,6 +66,7 @@
_adaptive_size_policy,
_g1_inc_collection_pause,
+ _g1_humongous_allocation,
_last_ditch_collection,
_last_gc_cause
--- a/hotspot/src/share/vm/interpreter/interpreterRuntime.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/interpreter/interpreterRuntime.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -859,7 +859,9 @@
const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : InvocationEntryBci;
const int bci = branch_bcp != NULL ? method->bci_from(fr.interpreter_frame_bcp()) : InvocationEntryBci;
+ assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending");
nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread);
+ assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions");
if (osr_nm != NULL) {
// We may need to do on-stack replacement which requires that no
--- a/hotspot/src/share/vm/opto/block.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/opto/block.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -284,13 +284,13 @@
// helper function that adds caller save registers to MachProjNode
void add_call_kills(MachProjNode *proj, RegMask& regs, const char* save_policy, bool exclude_soe);
// Schedule a call next in the block
- uint sched_call(Matcher &matcher, Block_Array &bbs, uint node_cnt, Node_List &worklist, int *ready_cnt, MachCallNode *mcall, VectorSet &next_call);
+ uint sched_call(Matcher &matcher, Block_Array &bbs, uint node_cnt, Node_List &worklist, GrowableArray<int> &ready_cnt, MachCallNode *mcall, VectorSet &next_call);
// Perform basic-block local scheduling
- Node *select(PhaseCFG *cfg, Node_List &worklist, int *ready_cnt, VectorSet &next_call, uint sched_slot);
+ Node *select(PhaseCFG *cfg, Node_List &worklist, GrowableArray<int> &ready_cnt, VectorSet &next_call, uint sched_slot);
void set_next_call( Node *n, VectorSet &next_call, Block_Array &bbs );
void needed_for_next_call(Node *this_call, VectorSet &next_call, Block_Array &bbs);
- bool schedule_local(PhaseCFG *cfg, Matcher &m, int *ready_cnt, VectorSet &next_call);
+ bool schedule_local(PhaseCFG *cfg, Matcher &m, GrowableArray<int> &ready_cnt, VectorSet &next_call);
// Cleanup if any code lands between a Call and his Catch
void call_catch_cleanup(Block_Array &bbs);
// Detect implicit-null-check opportunities. Basically, find NULL checks
--- a/hotspot/src/share/vm/opto/gcm.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/opto/gcm.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1344,8 +1344,8 @@
// Schedule locally. Right now a simple topological sort.
// Later, do a real latency aware scheduler.
- int *ready_cnt = NEW_RESOURCE_ARRAY(int,C->unique());
- memset( ready_cnt, -1, C->unique() * sizeof(int) );
+ uint max_idx = C->unique();
+ GrowableArray<int> ready_cnt(max_idx, max_idx, -1);
visited.Clear();
for (i = 0; i < _num_blocks; i++) {
if (!_blocks[i]->schedule_local(this, matcher, ready_cnt, visited)) {
--- a/hotspot/src/share/vm/opto/lcm.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/opto/lcm.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -404,7 +404,7 @@
// remaining cases (most), choose the instruction with the greatest latency
// (that is, the most number of pseudo-cycles required to the end of the
// routine). If there is a tie, choose the instruction with the most inputs.
-Node *Block::select(PhaseCFG *cfg, Node_List &worklist, int *ready_cnt, VectorSet &next_call, uint sched_slot) {
+Node *Block::select(PhaseCFG *cfg, Node_List &worklist, GrowableArray<int> &ready_cnt, VectorSet &next_call, uint sched_slot) {
// If only a single entry on the stack, use it
uint cnt = worklist.size();
@@ -465,7 +465,7 @@
// More than this instruction pending for successor to be ready,
// don't choose this if other opportunities are ready
- if (ready_cnt[use->_idx] > 1)
+ if (ready_cnt.at(use->_idx) > 1)
n_choice = 1;
}
@@ -565,7 +565,7 @@
//------------------------------sched_call-------------------------------------
-uint Block::sched_call( Matcher &matcher, Block_Array &bbs, uint node_cnt, Node_List &worklist, int *ready_cnt, MachCallNode *mcall, VectorSet &next_call ) {
+uint Block::sched_call( Matcher &matcher, Block_Array &bbs, uint node_cnt, Node_List &worklist, GrowableArray<int> &ready_cnt, MachCallNode *mcall, VectorSet &next_call ) {
RegMask regs;
// Schedule all the users of the call right now. All the users are
@@ -574,8 +574,9 @@
for (DUIterator_Fast imax, i = mcall->fast_outs(imax); i < imax; i++) {
Node* n = mcall->fast_out(i);
assert( n->is_MachProj(), "" );
- --ready_cnt[n->_idx];
- assert( !ready_cnt[n->_idx], "" );
+ int n_cnt = ready_cnt.at(n->_idx)-1;
+ ready_cnt.at_put(n->_idx, n_cnt);
+ assert( n_cnt == 0, "" );
// Schedule next to call
_nodes.map(node_cnt++, n);
// Collect defined registers
@@ -590,7 +591,9 @@
Node* m = n->fast_out(j); // Get user
if( bbs[m->_idx] != this ) continue;
if( m->is_Phi() ) continue;
- if( !--ready_cnt[m->_idx] )
+ int m_cnt = ready_cnt.at(m->_idx)-1;
+ ready_cnt.at_put(m->_idx, m_cnt);
+ if( m_cnt == 0 )
worklist.push(m);
}
@@ -655,7 +658,7 @@
//------------------------------schedule_local---------------------------------
// Topological sort within a block. Someday become a real scheduler.
-bool Block::schedule_local(PhaseCFG *cfg, Matcher &matcher, int *ready_cnt, VectorSet &next_call) {
+bool Block::schedule_local(PhaseCFG *cfg, Matcher &matcher, GrowableArray<int> &ready_cnt, VectorSet &next_call) {
// Already "sorted" are the block start Node (as the first entry), and
// the block-ending Node and any trailing control projections. We leave
// these alone. PhiNodes and ParmNodes are made to follow the block start
@@ -695,7 +698,7 @@
if( m && cfg->_bbs[m->_idx] == this && !m->is_top() )
local++; // One more block-local input
}
- ready_cnt[n->_idx] = local; // Count em up
+ ready_cnt.at_put(n->_idx, local); // Count em up
#ifdef ASSERT
if( UseConcMarkSweepGC || UseG1GC ) {
@@ -729,7 +732,7 @@
}
}
for(uint i2=i; i2<_nodes.size(); i2++ ) // Trailing guys get zapped count
- ready_cnt[_nodes[i2]->_idx] = 0;
+ ready_cnt.at_put(_nodes[i2]->_idx, 0);
// All the prescheduled guys do not hold back internal nodes
uint i3;
@@ -737,8 +740,10 @@
Node *n = _nodes[i3]; // Get pre-scheduled
for (DUIterator_Fast jmax, j = n->fast_outs(jmax); j < jmax; j++) {
Node* m = n->fast_out(j);
- if( cfg->_bbs[m->_idx] ==this ) // Local-block user
- ready_cnt[m->_idx]--; // Fix ready count
+ if( cfg->_bbs[m->_idx] ==this ) { // Local-block user
+ int m_cnt = ready_cnt.at(m->_idx)-1;
+ ready_cnt.at_put(m->_idx, m_cnt); // Fix ready count
+ }
}
}
@@ -747,7 +752,7 @@
Node_List worklist;
for(uint i4=i3; i4<node_cnt; i4++ ) { // Put ready guys on worklist
Node *m = _nodes[i4];
- if( !ready_cnt[m->_idx] ) { // Zero ready count?
+ if( !ready_cnt.at(m->_idx) ) { // Zero ready count?
if (m->is_iteratively_computed()) {
// Push induction variable increments last to allow other uses
// of the phi to be scheduled first. The select() method breaks
@@ -775,14 +780,14 @@
for (uint j=0; j<_nodes.size(); j++) {
Node *n = _nodes[j];
int idx = n->_idx;
- tty->print("# ready cnt:%3d ", ready_cnt[idx]);
+ tty->print("# ready cnt:%3d ", ready_cnt.at(idx));
tty->print("latency:%3d ", cfg->_node_latency->at_grow(idx));
tty->print("%4d: %s\n", idx, n->Name());
}
}
#endif
- uint max_idx = matcher.C->unique();
+ uint max_idx = (uint)ready_cnt.length();
// Pull from worklist and schedule
while( worklist.size() ) { // Worklist is not ready
@@ -840,11 +845,13 @@
Node* m = n->fast_out(i5); // Get user
if( cfg->_bbs[m->_idx] != this ) continue;
if( m->is_Phi() ) continue;
- if (m->_idx > max_idx) { // new node, skip it
+ if (m->_idx >= max_idx) { // new node, skip it
assert(m->is_MachProj() && n->is_Mach() && n->as_Mach()->has_call(), "unexpected node types");
continue;
}
- if( !--ready_cnt[m->_idx] )
+ int m_cnt = ready_cnt.at(m->_idx)-1;
+ ready_cnt.at_put(m->_idx, m_cnt);
+ if( m_cnt == 0 )
worklist.push(m);
}
}
--- a/hotspot/src/share/vm/opto/memnode.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/opto/memnode.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1718,8 +1718,10 @@
bool is_instance = (tinst != NULL) && tinst->is_known_instance_field();
if (ReduceFieldZeroing || is_instance) {
Node* value = can_see_stored_value(mem,phase);
- if (value != NULL && value->is_Con())
+ if (value != NULL && value->is_Con()) {
+ assert(value->bottom_type()->higher_equal(_type),"sanity");
return value->bottom_type();
+ }
}
if (is_instance) {
@@ -1759,6 +1761,20 @@
return LoadNode::Ideal(phase, can_reshape);
}
+const Type* LoadBNode::Value(PhaseTransform *phase) const {
+ Node* mem = in(MemNode::Memory);
+ Node* value = can_see_stored_value(mem,phase);
+ if (value != NULL && value->is_Con() &&
+ !value->bottom_type()->higher_equal(_type)) {
+ // If the input to the store does not fit with the load's result type,
+ // it must be truncated. We can't delay until Ideal call since
+ // a singleton Value is needed for split_thru_phi optimization.
+ int con = value->get_int();
+ return TypeInt::make((con << 24) >> 24);
+ }
+ return LoadNode::Value(phase);
+}
+
//--------------------------LoadUBNode::Ideal-------------------------------------
//
// If the previous store is to the same address as this load,
@@ -1775,6 +1791,20 @@
return LoadNode::Ideal(phase, can_reshape);
}
+const Type* LoadUBNode::Value(PhaseTransform *phase) const {
+ Node* mem = in(MemNode::Memory);
+ Node* value = can_see_stored_value(mem,phase);
+ if (value != NULL && value->is_Con() &&
+ !value->bottom_type()->higher_equal(_type)) {
+ // If the input to the store does not fit with the load's result type,
+ // it must be truncated. We can't delay until Ideal call since
+ // a singleton Value is needed for split_thru_phi optimization.
+ int con = value->get_int();
+ return TypeInt::make(con & 0xFF);
+ }
+ return LoadNode::Value(phase);
+}
+
//--------------------------LoadUSNode::Ideal-------------------------------------
//
// If the previous store is to the same address as this load,
@@ -1791,6 +1821,20 @@
return LoadNode::Ideal(phase, can_reshape);
}
+const Type* LoadUSNode::Value(PhaseTransform *phase) const {
+ Node* mem = in(MemNode::Memory);
+ Node* value = can_see_stored_value(mem,phase);
+ if (value != NULL && value->is_Con() &&
+ !value->bottom_type()->higher_equal(_type)) {
+ // If the input to the store does not fit with the load's result type,
+ // it must be truncated. We can't delay until Ideal call since
+ // a singleton Value is needed for split_thru_phi optimization.
+ int con = value->get_int();
+ return TypeInt::make(con & 0xFFFF);
+ }
+ return LoadNode::Value(phase);
+}
+
//--------------------------LoadSNode::Ideal--------------------------------------
//
// If the previous store is to the same address as this load,
@@ -1809,6 +1853,20 @@
return LoadNode::Ideal(phase, can_reshape);
}
+const Type* LoadSNode::Value(PhaseTransform *phase) const {
+ Node* mem = in(MemNode::Memory);
+ Node* value = can_see_stored_value(mem,phase);
+ if (value != NULL && value->is_Con() &&
+ !value->bottom_type()->higher_equal(_type)) {
+ // If the input to the store does not fit with the load's result type,
+ // it must be truncated. We can't delay until Ideal call since
+ // a singleton Value is needed for split_thru_phi optimization.
+ int con = value->get_int();
+ return TypeInt::make((con << 16) >> 16);
+ }
+ return LoadNode::Value(phase);
+}
+
//=============================================================================
//----------------------------LoadKlassNode::make------------------------------
// Polymorphic factory method:
--- a/hotspot/src/share/vm/opto/memnode.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/opto/memnode.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -215,6 +215,7 @@
virtual int Opcode() const;
virtual uint ideal_reg() const { return Op_RegI; }
virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
+ virtual const Type *Value(PhaseTransform *phase) const;
virtual int store_Opcode() const { return Op_StoreB; }
virtual BasicType memory_type() const { return T_BYTE; }
};
@@ -228,6 +229,7 @@
virtual int Opcode() const;
virtual uint ideal_reg() const { return Op_RegI; }
virtual Node* Ideal(PhaseGVN *phase, bool can_reshape);
+ virtual const Type *Value(PhaseTransform *phase) const;
virtual int store_Opcode() const { return Op_StoreB; }
virtual BasicType memory_type() const { return T_BYTE; }
};
@@ -241,10 +243,25 @@
virtual int Opcode() const;
virtual uint ideal_reg() const { return Op_RegI; }
virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
+ virtual const Type *Value(PhaseTransform *phase) const;
virtual int store_Opcode() const { return Op_StoreC; }
virtual BasicType memory_type() const { return T_CHAR; }
};
+//------------------------------LoadSNode--------------------------------------
+// Load a short (16bits signed) from memory
+class LoadSNode : public LoadNode {
+public:
+ LoadSNode( Node *c, Node *mem, Node *adr, const TypePtr* at, const TypeInt *ti = TypeInt::SHORT )
+ : LoadNode(c,mem,adr,at,ti) {}
+ virtual int Opcode() const;
+ virtual uint ideal_reg() const { return Op_RegI; }
+ virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
+ virtual const Type *Value(PhaseTransform *phase) const;
+ virtual int store_Opcode() const { return Op_StoreC; }
+ virtual BasicType memory_type() const { return T_SHORT; }
+};
+
//------------------------------LoadINode--------------------------------------
// Load an integer from memory
class LoadINode : public LoadNode {
@@ -433,19 +450,6 @@
};
-//------------------------------LoadSNode--------------------------------------
-// Load a short (16bits signed) from memory
-class LoadSNode : public LoadNode {
-public:
- LoadSNode( Node *c, Node *mem, Node *adr, const TypePtr* at, const TypeInt *ti = TypeInt::SHORT )
- : LoadNode(c,mem,adr,at,ti) {}
- virtual int Opcode() const;
- virtual uint ideal_reg() const { return Op_RegI; }
- virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
- virtual int store_Opcode() const { return Op_StoreC; }
- virtual BasicType memory_type() const { return T_SHORT; }
-};
-
//------------------------------StoreNode--------------------------------------
// Store value; requires Store, Address and Value
class StoreNode : public MemNode {
--- a/hotspot/src/share/vm/opto/parseHelper.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/opto/parseHelper.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -71,14 +71,14 @@
// Throw uncommon trap if class is not loaded or the value we are casting
// _from_ is not loaded, and value is not null. If the value _is_ NULL,
// then the checkcast does nothing.
- const TypeInstPtr *tp = _gvn.type(obj)->isa_instptr();
- if (!will_link || (tp && !tp->is_loaded())) {
+ const TypeOopPtr *tp = _gvn.type(obj)->isa_oopptr();
+ if (!will_link || (tp && tp->klass() && !tp->klass()->is_loaded())) {
if (C->log() != NULL) {
if (!will_link) {
C->log()->elem("assert_null reason='checkcast' klass='%d'",
C->log()->identify(klass));
}
- if (tp && !tp->is_loaded()) {
+ if (tp && tp->klass() && !tp->klass()->is_loaded()) {
// %%% Cannot happen?
C->log()->elem("assert_null reason='checkcast source' klass='%d'",
C->log()->identify(tp->klass()));
--- a/hotspot/src/share/vm/prims/jvmtiThreadState.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/prims/jvmtiThreadState.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -319,6 +319,15 @@
// clearing the flag indicates we are done with the PopFrame() dance
clr_pending_step_for_popframe();
+ // If exception was thrown in this frame, need to reset jvmti thread state.
+ // Single stepping may not get enabled correctly by the agent since
+ // exception state is passed in MethodExit event which may be sent at some
+ // time in the future. JDWP agent ignores MethodExit events if caused by
+ // an exception.
+ //
+ if (is_exception_detected()) {
+ clear_exception_detected();
+ }
// If step is pending for popframe then it may not be
// a repeat step. The new_bci and method_id is same as current_bci
// and current method_id after pop and step for recursive calls.
@@ -385,6 +394,15 @@
// the ForceEarlyReturn() dance
clr_pending_step_for_earlyret();
+ // If exception was thrown in this frame, need to reset jvmti thread state.
+ // Single stepping may not get enabled correctly by the agent since
+ // exception state is passed in MethodExit event which may be sent at some
+ // time in the future. JDWP agent ignores MethodExit events if caused by
+ // an exception.
+ //
+ if (is_exception_detected()) {
+ clear_exception_detected();
+ }
// If step is pending for earlyret then it may not be a repeat step.
// The new_bci and method_id is same as current_bci and current
// method_id after earlyret and step for recursive calls.
--- a/hotspot/src/share/vm/prims/jvmtiThreadState.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/prims/jvmtiThreadState.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -165,6 +165,10 @@
inline bool is_exception_caught() { return _exception_caught; }
inline void set_exception_detected() { _exception_detected = true;
_exception_caught = false; }
+ inline void clear_exception_detected() {
+ _exception_detected = false;
+ assert(_exception_caught == false, "_exception_caught is out of phase");
+ }
inline void set_exception_caught() { _exception_caught = true;
_exception_detected = false; }
--- a/hotspot/src/share/vm/runtime/advancedThresholdPolicy.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/advancedThresholdPolicy.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -271,13 +271,10 @@
}
// Create MDO if necessary.
-void AdvancedThresholdPolicy::create_mdo(methodHandle mh, TRAPS) {
+void AdvancedThresholdPolicy::create_mdo(methodHandle mh, JavaThread* THREAD) {
if (mh->is_native() || mh->is_abstract() || mh->is_accessor()) return;
if (mh->method_data() == NULL) {
- methodOopDesc::build_interpreter_method_data(mh, THREAD);
- if (HAS_PENDING_EXCEPTION) {
- CLEAR_PENDING_EXCEPTION;
- }
+ methodOopDesc::build_interpreter_method_data(mh, CHECK_AND_CLEAR);
}
}
@@ -426,22 +423,22 @@
}
// Update the rate and submit compile
-void AdvancedThresholdPolicy::submit_compile(methodHandle mh, int bci, CompLevel level, TRAPS) {
+void AdvancedThresholdPolicy::submit_compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread) {
int hot_count = (bci == InvocationEntryBci) ? mh->invocation_count() : mh->backedge_count();
update_rate(os::javaTimeMillis(), mh());
- CompileBroker::compile_method(mh, bci, level, mh, hot_count, "tiered", THREAD);
+ CompileBroker::compile_method(mh, bci, level, mh, hot_count, "tiered", thread);
}
// Handle the invocation event.
void AdvancedThresholdPolicy::method_invocation_event(methodHandle mh, methodHandle imh,
- CompLevel level, nmethod* nm, TRAPS) {
+ CompLevel level, nmethod* nm, JavaThread* thread) {
if (should_create_mdo(mh(), level)) {
- create_mdo(mh, THREAD);
+ create_mdo(mh, thread);
}
if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh, InvocationEntryBci)) {
CompLevel next_level = call_event(mh(), level);
if (next_level != level) {
- compile(mh, InvocationEntryBci, next_level, THREAD);
+ compile(mh, InvocationEntryBci, next_level, thread);
}
}
}
@@ -449,13 +446,13 @@
// Handle the back branch event. Notice that we can compile the method
// with a regular entry from here.
void AdvancedThresholdPolicy::method_back_branch_event(methodHandle mh, methodHandle imh,
- int bci, CompLevel level, nmethod* nm, TRAPS) {
+ int bci, CompLevel level, nmethod* nm, JavaThread* thread) {
if (should_create_mdo(mh(), level)) {
- create_mdo(mh, THREAD);
+ create_mdo(mh, thread);
}
// Check if MDO should be created for the inlined method
if (should_create_mdo(imh(), level)) {
- create_mdo(imh, THREAD);
+ create_mdo(imh, thread);
}
if (is_compilation_enabled()) {
@@ -463,7 +460,7 @@
CompLevel max_osr_level = (CompLevel)imh->highest_osr_comp_level();
// At the very least compile the OSR version
if (!CompileBroker::compilation_is_in_queue(imh, bci) && next_osr_level != level) {
- compile(imh, bci, next_osr_level, THREAD);
+ compile(imh, bci, next_osr_level, thread);
}
// Use loop event as an opportunity to also check if there's been
@@ -502,14 +499,14 @@
next_level = CompLevel_full_profile;
}
if (cur_level != next_level) {
- compile(mh, InvocationEntryBci, next_level, THREAD);
+ compile(mh, InvocationEntryBci, next_level, thread);
}
}
} else {
cur_level = comp_level(imh());
next_level = call_event(imh(), cur_level);
if (!CompileBroker::compilation_is_in_queue(imh, bci) && next_level != cur_level) {
- compile(imh, InvocationEntryBci, next_level, THREAD);
+ compile(imh, InvocationEntryBci, next_level, thread);
}
}
}
--- a/hotspot/src/share/vm/runtime/advancedThresholdPolicy.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/advancedThresholdPolicy.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -197,7 +197,7 @@
// determines whether we should do that.
inline bool should_create_mdo(methodOop method, CompLevel cur_level);
// Create MDO if necessary.
- void create_mdo(methodHandle mh, TRAPS);
+ void create_mdo(methodHandle mh, JavaThread* thread);
// Is method profiled enough?
bool is_method_profiled(methodOop method);
@@ -208,12 +208,12 @@
jlong start_time() const { return _start_time; }
// Submit a given method for compilation (and update the rate).
- virtual void submit_compile(methodHandle mh, int bci, CompLevel level, TRAPS);
+ virtual void submit_compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread);
// event() from SimpleThresholdPolicy would call these.
virtual void method_invocation_event(methodHandle method, methodHandle inlinee,
- CompLevel level, nmethod* nm, TRAPS);
+ CompLevel level, nmethod* nm, JavaThread* thread);
virtual void method_back_branch_event(methodHandle method, methodHandle inlinee,
- int bci, CompLevel level, nmethod* nm, TRAPS);
+ int bci, CompLevel level, nmethod* nm, JavaThread* thread);
public:
AdvancedThresholdPolicy() : _start_time(0) { }
// Select task is called by CompileBroker. We should return a task or NULL.
--- a/hotspot/src/share/vm/runtime/arguments.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/arguments.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -1040,6 +1040,16 @@
}
#ifndef KERNEL
+static void disable_adaptive_size_policy(const char* collector_name) {
+ if (UseAdaptiveSizePolicy) {
+ if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) {
+ warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.",
+ collector_name);
+ }
+ FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false);
+ }
+}
+
// If the user has chosen ParallelGCThreads > 0, we set UseParNewGC
// if it's not explictly set or unset. If the user has chosen
// UseParNewGC and not explicitly set ParallelGCThreads we
@@ -1049,11 +1059,8 @@
"control point invariant");
assert(UseParNewGC, "Error");
- // Turn off AdaptiveSizePolicy by default for parnew until it is
- // complete.
- if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) {
- FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false);
- }
+ // Turn off AdaptiveSizePolicy for parnew until it is complete.
+ disable_adaptive_size_policy("UseParNewGC");
if (ParallelGCThreads == 0) {
FLAG_SET_DEFAULT(ParallelGCThreads,
@@ -1110,11 +1117,8 @@
FLAG_SET_ERGO(bool, UseParNewGC, true);
}
- // Turn off AdaptiveSizePolicy by default for cms until it is
- // complete.
- if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) {
- FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false);
- }
+ // Turn off AdaptiveSizePolicy for CMS until it is complete.
+ disable_adaptive_size_policy("UseConcMarkSweepGC");
// In either case, adjust ParallelGCThreads and/or UseParNewGC
// as needed.
--- a/hotspot/src/share/vm/runtime/compilationPolicy.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/compilationPolicy.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -306,29 +306,27 @@
return (current >= initial + target);
}
-nmethod* NonTieredCompPolicy::event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS) {
+nmethod* NonTieredCompPolicy::event(methodHandle method, methodHandle inlinee, int branch_bci,
+ int bci, CompLevel comp_level, nmethod* nm, JavaThread* thread) {
assert(comp_level == CompLevel_none, "This should be only called from the interpreter");
NOT_PRODUCT(trace_frequency_counter_overflow(method, branch_bci, bci));
- if (JvmtiExport::can_post_interpreter_events()) {
- assert(THREAD->is_Java_thread(), "Wrong type of thread");
- if (((JavaThread*)THREAD)->is_interp_only_mode()) {
- // If certain JVMTI events (e.g. frame pop event) are requested then the
- // thread is forced to remain in interpreted code. This is
- // implemented partly by a check in the run_compiled_code
- // section of the interpreter whether we should skip running
- // compiled code, and partly by skipping OSR compiles for
- // interpreted-only threads.
- if (bci != InvocationEntryBci) {
- reset_counter_for_back_branch_event(method);
- return NULL;
- }
+ if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) {
+ // If certain JVMTI events (e.g. frame pop event) are requested then the
+ // thread is forced to remain in interpreted code. This is
+ // implemented partly by a check in the run_compiled_code
+ // section of the interpreter whether we should skip running
+ // compiled code, and partly by skipping OSR compiles for
+ // interpreted-only threads.
+ if (bci != InvocationEntryBci) {
+ reset_counter_for_back_branch_event(method);
+ return NULL;
}
}
if (bci == InvocationEntryBci) {
// when code cache is full, compilation gets switched off, UseCompiler
// is set to false
if (!method->has_compiled_code() && UseCompiler) {
- method_invocation_event(method, CHECK_NULL);
+ method_invocation_event(method, thread);
} else {
// Force counter overflow on method entry, even if no compilation
// happened. (The method_invocation_event call does this also.)
@@ -344,7 +342,7 @@
NOT_PRODUCT(trace_osr_request(method, osr_nm, bci));
// when code cache is full, we should not compile any more...
if (osr_nm == NULL && UseCompiler) {
- method_back_branch_event(method, bci, CHECK_NULL);
+ method_back_branch_event(method, bci, thread);
osr_nm = method->lookup_osr_nmethod_for(bci, CompLevel_highest_tier, true);
}
if (osr_nm == NULL) {
@@ -395,7 +393,7 @@
// SimpleCompPolicy - compile current method
-void SimpleCompPolicy::method_invocation_event( methodHandle m, TRAPS) {
+void SimpleCompPolicy::method_invocation_event(methodHandle m, JavaThread* thread) {
int hot_count = m->invocation_count();
reset_counter_for_invocation_event(m);
const char* comment = "count";
@@ -405,18 +403,18 @@
if (nm == NULL ) {
const char* comment = "count";
CompileBroker::compile_method(m, InvocationEntryBci, CompLevel_highest_tier,
- m, hot_count, comment, CHECK);
+ m, hot_count, comment, thread);
}
}
}
-void SimpleCompPolicy::method_back_branch_event(methodHandle m, int bci, TRAPS) {
+void SimpleCompPolicy::method_back_branch_event(methodHandle m, int bci, JavaThread* thread) {
int hot_count = m->backedge_count();
const char* comment = "backedge_count";
if (is_compilation_enabled() && !m->is_not_osr_compilable() && can_be_compiled(m)) {
CompileBroker::compile_method(m, bci, CompLevel_highest_tier,
- m, hot_count, comment, CHECK);
+ m, hot_count, comment, thread);
NOT_PRODUCT(trace_osr_completion(m->lookup_osr_nmethod_for(bci, CompLevel_highest_tier, true));)
}
}
@@ -427,14 +425,13 @@
// Consider m for compilation
-void StackWalkCompPolicy::method_invocation_event(methodHandle m, TRAPS) {
+void StackWalkCompPolicy::method_invocation_event(methodHandle m, JavaThread* thread) {
int hot_count = m->invocation_count();
reset_counter_for_invocation_event(m);
const char* comment = "count";
if (is_compilation_enabled() && m->code() == NULL && can_be_compiled(m)) {
- ResourceMark rm(THREAD);
- JavaThread *thread = (JavaThread*)THREAD;
+ ResourceMark rm(thread);
frame fr = thread->last_frame();
assert(fr.is_interpreted_frame(), "must be interpreted");
assert(fr.interpreter_frame_method() == m(), "bad method");
@@ -461,17 +458,17 @@
assert(top != NULL, "findTopInlinableFrame returned null");
if (TraceCompilationPolicy) top->print();
CompileBroker::compile_method(top->top_method(), InvocationEntryBci, CompLevel_highest_tier,
- m, hot_count, comment, CHECK);
+ m, hot_count, comment, thread);
}
}
}
-void StackWalkCompPolicy::method_back_branch_event(methodHandle m, int bci, TRAPS) {
+void StackWalkCompPolicy::method_back_branch_event(methodHandle m, int bci, JavaThread* thread) {
int hot_count = m->backedge_count();
const char* comment = "backedge_count";
if (is_compilation_enabled() && !m->is_not_osr_compilable() && can_be_compiled(m)) {
- CompileBroker::compile_method(m, bci, CompLevel_highest_tier, m, hot_count, comment, CHECK);
+ CompileBroker::compile_method(m, bci, CompLevel_highest_tier, m, hot_count, comment, thread);
NOT_PRODUCT(trace_osr_completion(m->lookup_osr_nmethod_for(bci, CompLevel_highest_tier, true));)
}
--- a/hotspot/src/share/vm/runtime/compilationPolicy.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/compilationPolicy.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -64,7 +64,7 @@
virtual int compiler_count(CompLevel comp_level) = 0;
// main notification entry, return a pointer to an nmethod if the OSR is required,
// returns NULL otherwise.
- virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS) = 0;
+ virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, JavaThread* thread) = 0;
// safepoint() is called at the end of the safepoint
virtual void do_safepoint_work() = 0;
// reprofile request
@@ -105,15 +105,15 @@
virtual bool is_mature(methodOop method);
virtual void initialize();
virtual CompileTask* select_task(CompileQueue* compile_queue);
- virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS);
- virtual void method_invocation_event(methodHandle m, TRAPS) = 0;
- virtual void method_back_branch_event(methodHandle m, int bci, TRAPS) = 0;
+ virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, JavaThread* thread);
+ virtual void method_invocation_event(methodHandle m, JavaThread* thread) = 0;
+ virtual void method_back_branch_event(methodHandle m, int bci, JavaThread* thread) = 0;
};
class SimpleCompPolicy : public NonTieredCompPolicy {
public:
- virtual void method_invocation_event(methodHandle m, TRAPS);
- virtual void method_back_branch_event(methodHandle m, int bci, TRAPS);
+ virtual void method_invocation_event(methodHandle m, JavaThread* thread);
+ virtual void method_back_branch_event(methodHandle m, int bci, JavaThread* thread);
};
// StackWalkCompPolicy - existing C2 policy
@@ -121,8 +121,8 @@
#ifdef COMPILER2
class StackWalkCompPolicy : public NonTieredCompPolicy {
public:
- virtual void method_invocation_event(methodHandle m, TRAPS);
- virtual void method_back_branch_event(methodHandle m, int bci, TRAPS);
+ virtual void method_invocation_event(methodHandle m, JavaThread* thread);
+ virtual void method_back_branch_event(methodHandle m, int bci, JavaThread* thread);
private:
RFrame* findTopInlinableFrame(GrowableArray<RFrame*>* stack);
--- a/hotspot/src/share/vm/runtime/frame.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/frame.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1315,7 +1315,6 @@
}
#endif
-
#ifdef ASSERT
void frame::interpreter_frame_verify_monitor(BasicObjectLock* value) const {
assert(is_interpreted_frame(), "Not an interpreted frame");
@@ -1331,24 +1330,35 @@
guarantee((current - low_mark) % monitor_size == 0 , "Misaligned bottom of BasicObjectLock*");
guarantee( current >= low_mark , "Current BasicObjectLock* below than low_mark");
}
+#endif
+#ifndef PRODUCT
+void frame::describe(FrameValues& values, int frame_no) {
+ // boundaries: sp and the 'real' frame pointer
+ values.describe(-1, sp(), err_msg("sp for #%d", frame_no), 1);
+ intptr_t* frame_pointer = real_fp(); // Note: may differ from fp()
-void frame::describe(FrameValues& values, int frame_no) {
- intptr_t* frame_pointer = real_fp();
+ // print frame info at the highest boundary
+ intptr_t* info_address = MAX2(sp(), frame_pointer);
+
+ if (info_address != frame_pointer) {
+ // print frame_pointer explicitly if not marked by the frame info
+ values.describe(-1, frame_pointer, err_msg("frame pointer for #%d", frame_no), 1);
+ }
+
if (is_entry_frame() || is_compiled_frame() || is_interpreted_frame() || is_native_frame()) {
// Label values common to most frames
values.describe(-1, unextended_sp(), err_msg("unextended_sp for #%d", frame_no));
- values.describe(-1, sp(), err_msg("sp for #%d", frame_no));
- values.describe(-1, frame_pointer, err_msg("frame pointer for #%d", frame_no));
}
+
if (is_interpreted_frame()) {
methodOop m = interpreter_frame_method();
int bci = interpreter_frame_bci();
// Label the method and current bci
- values.describe(-1, MAX2(sp(), frame_pointer),
+ values.describe(-1, info_address,
FormatBuffer<1024>("#%d method %s @ %d", frame_no, m->name_and_sig_as_C_string(), bci), 2);
- values.describe(-1, MAX2(sp(), frame_pointer),
+ values.describe(-1, info_address,
err_msg("- %d locals %d max stack", m->max_locals(), m->max_stack()), 1);
if (m->max_locals() > 0) {
intptr_t* l0 = interpreter_frame_local_at(0);
@@ -1380,21 +1390,36 @@
}
} else if (is_entry_frame()) {
// For now just label the frame
- values.describe(-1, MAX2(sp(), frame_pointer), err_msg("#%d entry frame", frame_no), 2);
+ values.describe(-1, info_address, err_msg("#%d entry frame", frame_no), 2);
} else if (is_compiled_frame()) {
// For now just label the frame
nmethod* nm = cb()->as_nmethod_or_null();
- values.describe(-1, MAX2(sp(), frame_pointer),
+ values.describe(-1, info_address,
FormatBuffer<1024>("#%d nmethod " INTPTR_FORMAT " for method %s%s", frame_no,
nm, nm->method()->name_and_sig_as_C_string(),
- is_deoptimized_frame() ? " (deoptimized" : ""), 2);
+ (_deopt_state == is_deoptimized) ?
+ " (deoptimized)" :
+ ((_deopt_state == unknown) ? " (state unknown)" : "")),
+ 2);
} else if (is_native_frame()) {
// For now just label the frame
nmethod* nm = cb()->as_nmethod_or_null();
- values.describe(-1, MAX2(sp(), frame_pointer),
+ values.describe(-1, info_address,
FormatBuffer<1024>("#%d nmethod " INTPTR_FORMAT " for native method %s", frame_no,
nm, nm->method()->name_and_sig_as_C_string()), 2);
+ } else if (is_ricochet_frame()) {
+ values.describe(-1, info_address, err_msg("#%d ricochet frame", frame_no), 2);
+ } else {
+ // provide default info if not handled before
+ char *info = (char *) "special frame";
+ if ((_cb != NULL) &&
+ (_cb->name() != NULL)) {
+ info = (char *)_cb->name();
+ }
+ values.describe(-1, info_address, err_msg("#%d <%s>", frame_no, info), 2);
}
+
+ // platform dependent additional data
describe_pd(values, frame_no);
}
@@ -1411,7 +1436,7 @@
}
-#ifdef ASSERT
+#ifndef PRODUCT
void FrameValues::describe(int owner, intptr_t* location, const char* description, int priority) {
FrameValue fv;
@@ -1424,6 +1449,7 @@
}
+#ifdef ASSERT
void FrameValues::validate() {
_values.sort(compare);
bool error = false;
@@ -1449,7 +1475,7 @@
}
assert(!error, "invalid layout");
}
-
+#endif // ASSERT
void FrameValues::print(JavaThread* thread) {
_values.sort(compare);
@@ -1498,4 +1524,4 @@
}
}
-#endif
+#endif // ndef PRODUCT
--- a/hotspot/src/share/vm/runtime/frame.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/frame.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -494,7 +494,7 @@
};
-#ifdef ASSERT
+#ifndef PRODUCT
// A simple class to describe a location on the stack
class FrameValue VALUE_OBJ_CLASS_SPEC {
public:
@@ -524,7 +524,9 @@
// Used by frame functions to describe locations.
void describe(int owner, intptr_t* location, const char* description, int priority = 0);
+#ifdef ASSERT
void validate();
+#endif
void print(JavaThread* thread);
};
--- a/hotspot/src/share/vm/runtime/globals.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/globals.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -3477,16 +3477,19 @@
" Linux this policy requires root privilege.") \
\
product(bool, ThreadPriorityVerbose, false, \
- "print priority changes") \
+ "Print priority changes") \
\
product(intx, DefaultThreadPriority, -1, \
- "what native priority threads run at if not specified elsewhere (-1 means no change)") \
+ "The native priority at which threads run if not elsewhere " \
+ "specified (-1 means no change)") \
\
product(intx, CompilerThreadPriority, -1, \
- "what priority should compiler threads run at (-1 means no change)") \
+ "The native priority at which compiler threads should run " \
+ "(-1 means no change)") \
\
product(intx, VMThreadPriority, -1, \
- "what priority should VM threads run at (-1 means no change)") \
+ "The native priority at which the VM thread should run " \
+ "(-1 means no change)") \
\
product(bool, CompilerThreadHintNoPreempt, true, \
"(Solaris only) Give compiler threads an extra quanta") \
@@ -3505,6 +3508,15 @@
product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \
product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \
\
+ experimental(bool, UseCriticalJavaThreadPriority, false, \
+ "Java thread priority 10 maps to critical scheduling priority") \
+ \
+ experimental(bool, UseCriticalCompilerThreadPriority, false, \
+ "Compiler thread(s) run at critical scheduling priority") \
+ \
+ experimental(bool, UseCriticalCMSThreadPriority, false, \
+ "ConcurrentMarkSweep thread runs at critical scheduling priority")\
+ \
/* compiler debugging */ \
notproduct(intx, CompileTheWorldStartAt, 1, \
"First class to consider when using +CompileTheWorld") \
@@ -3574,7 +3586,7 @@
"Threshold at which tier 3 compilation is invoked (invocation " \
"minimum must be satisfied.") \
\
- product(intx, Tier3BackEdgeThreshold, 7000, \
+ product(intx, Tier3BackEdgeThreshold, 60000, \
"Back edge threshold at which tier 3 OSR compilation is invoked") \
\
product(intx, Tier4InvocationThreshold, 5000, \
@@ -3871,7 +3883,7 @@
product(bool, UseVMInterruptibleIO, false, \
"(Unstable, Solaris-specific) Thread interrupt before or with " \
"EINTR for I/O operations results in OS_INTRPT. The default value"\
- " of this flag is true for JDK 6 and earliers")
+ " of this flag is true for JDK 6 and earlier")
/*
* Macros for factoring of globals
--- a/hotspot/src/share/vm/runtime/mutexLocker.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/mutexLocker.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -126,6 +126,7 @@
Mutex* FreeList_lock = NULL;
Monitor* SecondaryFreeList_lock = NULL;
Mutex* OldSets_lock = NULL;
+Monitor* RootRegionScan_lock = NULL;
Mutex* MMUTracker_lock = NULL;
Mutex* HotCardCache_lock = NULL;
@@ -199,6 +200,7 @@
def(FreeList_lock , Mutex, leaf , true );
def(SecondaryFreeList_lock , Monitor, leaf , true );
def(OldSets_lock , Mutex , leaf , true );
+ def(RootRegionScan_lock , Monitor, leaf , true );
def(MMUTracker_lock , Mutex , leaf , true );
def(HotCardCache_lock , Mutex , special , true );
def(EvacFailureStack_lock , Mutex , nonleaf , true );
--- a/hotspot/src/share/vm/runtime/mutexLocker.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/mutexLocker.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -115,7 +115,7 @@
#ifndef PRODUCT
extern Mutex* FullGCALot_lock; // a lock to make FullGCALot MT safe
-#endif
+#endif // PRODUCT
extern Mutex* Debug1_lock; // A bunch of pre-allocated locks that can be used for tracing
extern Mutex* Debug2_lock; // down synchronization related bugs!
extern Mutex* Debug3_lock;
@@ -129,6 +129,7 @@
extern Mutex* FreeList_lock; // protects the free region list during safepoints
extern Monitor* SecondaryFreeList_lock; // protects the secondary free region list
extern Mutex* OldSets_lock; // protects the old region sets
+extern Monitor* RootRegionScan_lock; // used to notify that the CM threads have finished scanning the IM snapshot regions
extern Mutex* MMUTracker_lock; // protects the MMU
// tracker data structures
extern Mutex* HotCardCache_lock; // protects the hot card cache
--- a/hotspot/src/share/vm/runtime/os.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/os.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -73,8 +73,9 @@
MinPriority = 1, // Minimum priority
NormPriority = 5, // Normal (non-daemon) priority
NearMaxPriority = 9, // High priority, used for VMThread
- MaxPriority = 10 // Highest priority, used for WatcherThread
+ MaxPriority = 10, // Highest priority, used for WatcherThread
// ensures that VMThread doesn't starve profiler
+ CriticalPriority = 11 // Critical thread priority
};
// Typedef for structured exception handling support
@@ -733,7 +734,7 @@
// Thread priority helpers (implemented in OS-specific part)
static OSReturn set_native_priority(Thread* thread, int native_prio);
static OSReturn get_native_priority(const Thread* const thread, int* priority_ptr);
- static int java_to_os_priority[MaxPriority + 1];
+ static int java_to_os_priority[CriticalPriority + 1];
// Hint to the underlying OS that a task switch would not be good.
// Void return because it's a hint and can fail.
static void hint_no_preempt();
--- a/hotspot/src/share/vm/runtime/simpleThresholdPolicy.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/simpleThresholdPolicy.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -177,13 +177,11 @@
}
nmethod* SimpleThresholdPolicy::event(methodHandle method, methodHandle inlinee,
- int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS) {
+ int branch_bci, int bci, CompLevel comp_level, nmethod* nm, JavaThread* thread) {
if (comp_level == CompLevel_none &&
- JvmtiExport::can_post_interpreter_events()) {
- assert(THREAD->is_Java_thread(), "Should be java thread");
- if (((JavaThread*)THREAD)->is_interp_only_mode()) {
- return NULL;
- }
+ JvmtiExport::can_post_interpreter_events() &&
+ thread->is_interp_only_mode()) {
+ return NULL;
}
nmethod *osr_nm = NULL;
@@ -197,9 +195,9 @@
}
if (bci == InvocationEntryBci) {
- method_invocation_event(method, inlinee, comp_level, nm, THREAD);
+ method_invocation_event(method, inlinee, comp_level, nm, thread);
} else {
- method_back_branch_event(method, inlinee, bci, comp_level, nm, THREAD);
+ method_back_branch_event(method, inlinee, bci, comp_level, nm, thread);
// method == inlinee if the event originated in the main method
int highest_level = inlinee->highest_osr_comp_level();
if (highest_level > comp_level) {
@@ -210,7 +208,7 @@
}
// Check if the method can be compiled, change level if necessary
-void SimpleThresholdPolicy::compile(methodHandle mh, int bci, CompLevel level, TRAPS) {
+void SimpleThresholdPolicy::compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread) {
assert(level <= TieredStopAtLevel, "Invalid compilation level");
if (level == CompLevel_none) {
return;
@@ -221,7 +219,7 @@
// pure C1.
if (!can_be_compiled(mh, level)) {
if (level == CompLevel_full_optimization && can_be_compiled(mh, CompLevel_simple)) {
- compile(mh, bci, CompLevel_simple, THREAD);
+ compile(mh, bci, CompLevel_simple, thread);
}
return;
}
@@ -232,14 +230,14 @@
if (PrintTieredEvents) {
print_event(COMPILE, mh, mh, bci, level);
}
- submit_compile(mh, bci, level, THREAD);
+ submit_compile(mh, bci, level, thread);
}
}
// Tell the broker to compile the method
-void SimpleThresholdPolicy::submit_compile(methodHandle mh, int bci, CompLevel level, TRAPS) {
+void SimpleThresholdPolicy::submit_compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread) {
int hot_count = (bci == InvocationEntryBci) ? mh->invocation_count() : mh->backedge_count();
- CompileBroker::compile_method(mh, bci, level, mh, hot_count, "tiered", THREAD);
+ CompileBroker::compile_method(mh, bci, level, mh, hot_count, "tiered", thread);
}
// Call and loop predicates determine whether a transition to a higher
@@ -366,11 +364,11 @@
// Handle the invocation event.
void SimpleThresholdPolicy::method_invocation_event(methodHandle mh, methodHandle imh,
- CompLevel level, nmethod* nm, TRAPS) {
+ CompLevel level, nmethod* nm, JavaThread* thread) {
if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh, InvocationEntryBci)) {
CompLevel next_level = call_event(mh(), level);
if (next_level != level) {
- compile(mh, InvocationEntryBci, next_level, THREAD);
+ compile(mh, InvocationEntryBci, next_level, thread);
}
}
}
@@ -378,7 +376,7 @@
// Handle the back branch event. Notice that we can compile the method
// with a regular entry from here.
void SimpleThresholdPolicy::method_back_branch_event(methodHandle mh, methodHandle imh,
- int bci, CompLevel level, nmethod* nm, TRAPS) {
+ int bci, CompLevel level, nmethod* nm, JavaThread* thread) {
// If the method is already compiling, quickly bail out.
if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh, bci)) {
// Use loop event as an opportinity to also check there's been
@@ -391,13 +389,13 @@
next_osr_level < CompLevel_full_optimization ? next_osr_level : cur_level);
bool is_compiling = false;
if (next_level != cur_level) {
- compile(mh, InvocationEntryBci, next_level, THREAD);
+ compile(mh, InvocationEntryBci, next_level, thread);
is_compiling = true;
}
// Do the OSR version
if (!is_compiling && next_osr_level != level) {
- compile(mh, bci, next_osr_level, THREAD);
+ compile(mh, bci, next_osr_level, thread);
}
}
}
--- a/hotspot/src/share/vm/runtime/simpleThresholdPolicy.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/runtime/simpleThresholdPolicy.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -67,9 +67,9 @@
// Print policy-specific information if necessary
virtual void print_specific(EventType type, methodHandle mh, methodHandle imh, int bci, CompLevel level) { }
// Check if the method can be compiled, change level if necessary
- void compile(methodHandle mh, int bci, CompLevel level, TRAPS);
+ void compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread);
// Submit a given method for compilation
- virtual void submit_compile(methodHandle mh, int bci, CompLevel level, TRAPS);
+ virtual void submit_compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread);
// Simple methods are as good being compiled with C1 as C2.
// This function tells if it's such a function.
inline bool is_trivial(methodOop method);
@@ -88,9 +88,9 @@
return CompLevel_none;
}
virtual void method_invocation_event(methodHandle method, methodHandle inlinee,
- CompLevel level, nmethod* nm, TRAPS);
+ CompLevel level, nmethod* nm, JavaThread* thread);
virtual void method_back_branch_event(methodHandle method, methodHandle inlinee,
- int bci, CompLevel level, nmethod* nm, TRAPS);
+ int bci, CompLevel level, nmethod* nm, JavaThread* thread);
public:
SimpleThresholdPolicy() : _c1_count(0), _c2_count(0) { }
virtual int compiler_count(CompLevel comp_level) {
@@ -104,7 +104,7 @@
virtual void disable_compilation(methodOop method) { }
virtual void reprofile(ScopeDesc* trap_scope, bool is_osr);
virtual nmethod* event(methodHandle method, methodHandle inlinee,
- int branch_bci, int bci, CompLevel comp_level, nmethod* nm, TRAPS);
+ int branch_bci, int bci, CompLevel comp_level, nmethod* nm, JavaThread* thread);
// Select task is called by CompileBroker. We should return a task or NULL.
virtual CompileTask* select_task(CompileQueue* compile_queue);
// Tell the runtime if we think a given method is adequately profiled.
--- a/hotspot/src/share/vm/services/diagnosticArgument.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/services/diagnosticArgument.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2012 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
@@ -59,12 +59,13 @@
template <> void DCmdArgument<bool>::parse_value(const char* str,
size_t len, TRAPS) {
+ // len is the length of the current token starting at str
if (len == 0) {
set_value(true);
} else {
- if (strcasecmp(str, "true") == 0) {
+ if (len == strlen("true") && strncasecmp(str, "true", len) == 0) {
set_value(true);
- } else if (strcasecmp(str, "false") == 0) {
+ } else if (len == strlen("false") && strncasecmp(str, "false", len) == 0) {
set_value(false);
} else {
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
--- a/hotspot/src/share/vm/services/diagnosticCommand.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/services/diagnosticCommand.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -31,6 +31,33 @@
#include "services/heapDumper.hpp"
#include "services/management.hpp"
+void DCmdRegistrant::register_dcmds(){
+ // Registration of the diagnostic commands
+ // First boolean argument specifies if the command is enabled
+ // Second boolean argument specifies if the command is hidden
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(true, false));
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(true, false));
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(true, false));
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(true, false));
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(true, false));
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(true, false));
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(true, false));
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(true, false));
+#ifndef SERVICES_KERNEL // Heap dumping not supported
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(true, false));
+#endif // SERVICES_KERNEL
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(true, false));
+ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(true, false));
+
+}
+
+#ifndef HAVE_EXTRA_DCMD
+void DCmdRegistrant::register_dcmds_ext(){
+ // Do nothing here
+}
+#endif
+
+
HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
_all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
_cmd("command name", "The name of the command for which we want help",
--- a/hotspot/src/share/vm/services/diagnosticCommand.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/services/diagnosticCommand.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -34,6 +34,7 @@
#include "services/diagnosticArgument.hpp"
#include "services/diagnosticCommand.hpp"
#include "services/diagnosticFramework.hpp"
+#include "services/diagnosticCommand_ext.hpp"
class HelpDCmd : public DCmdWithParser {
protected:
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/services/diagnosticCommand_ext.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2012, 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_SERVICES_DIAGNOSTICCOMMAND_EXT_HPP
+#define SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_EXT_HPP
+
+#undef HAVE_EXTRA_DCMD
+
+#endif // SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_HPP
--- a/hotspot/src/share/vm/services/diagnosticFramework.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/services/diagnosticFramework.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -387,4 +387,17 @@
}
};
+// This class provides a convenient way to register Dcmds, without a need to change
+// management.cpp every time. Body of these two methods resides in
+// diagnosticCommand.cpp
+
+class DCmdRegistrant : public AllStatic {
+
+private:
+ static void register_dcmds();
+ static void register_dcmds_ext();
+
+ friend class Management;
+};
+
#endif // SHARE_VM_SERVICES_DIAGNOSTICFRAMEWORK_HPP
--- a/hotspot/src/share/vm/services/g1MemoryPool.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/services/g1MemoryPool.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -78,7 +78,7 @@
G1MemoryPoolSuper(g1h,
"G1 Old Gen",
g1h->g1mm()->old_space_committed(), /* init_size */
- _undefined_max,
+ g1h->g1mm()->old_gen_max(),
true /* support_usage_threshold */) { }
MemoryUsage G1OldGenPool::get_memory_usage() {
--- a/hotspot/src/share/vm/services/g1MemoryPool.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/services/g1MemoryPool.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -101,7 +101,7 @@
return _g1mm->old_space_used();
}
size_t max_size() const {
- return _undefined_max;
+ return _g1mm->old_gen_max();
}
MemoryUsage get_memory_usage();
};
--- a/hotspot/src/share/vm/services/gcNotifier.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/services/gcNotifier.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -44,7 +44,8 @@
// Make a copy of the last GC statistics
// GC may occur between now and the creation of the notification
int num_pools = MemoryService::num_memory_pools();
- GCStatInfo* stat = new GCStatInfo(num_pools);
+ // stat is deallocated inside GCNotificationRequest
+ GCStatInfo* stat = new(ResourceObj::C_HEAP) GCStatInfo(num_pools);
mgr->get_last_gc_stat(stat);
GCNotificationRequest *request = new GCNotificationRequest(os::javaTimeMillis(),mgr,action,cause,stat);
addRequest(request);
--- a/hotspot/src/share/vm/services/management.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/services/management.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -119,21 +119,8 @@
_optional_support.isThreadAllocatedMemorySupported = 1;
// Registration of the diagnostic commands
- // First boolean argument specifies if the command is enabled
- // Second boolean argument specifies if the command is hidden
- DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(true, false));
- DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(true, false));
- DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(true, false));
- DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(true, false));
- DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(true, false));
- DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(true, false));
- DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(true, false));
- DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(true, false));
-#ifndef SERVICES_KERNEL // Heap dumping not supported
- DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(true, false));
-#endif // SERVICES_KERNEL
- DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(true, false));
- DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(true, false));
+ DCmdRegistrant::register_dcmds();
+ DCmdRegistrant::register_dcmds_ext();
}
void Management::initialize(TRAPS) {
@@ -2047,15 +2034,15 @@
// Make a copy of the last GC statistics
// GC may occur while constructing the last GC information
int num_pools = MemoryService::num_memory_pools();
- GCStatInfo* stat = new GCStatInfo(num_pools);
- if (mgr->get_last_gc_stat(stat) == 0) {
+ GCStatInfo stat(num_pools);
+ if (mgr->get_last_gc_stat(&stat) == 0) {
gc_stat->gc_index = 0;
return;
}
- gc_stat->gc_index = stat->gc_index();
- gc_stat->start_time = Management::ticks_to_ms(stat->start_time());
- gc_stat->end_time = Management::ticks_to_ms(stat->end_time());
+ gc_stat->gc_index = stat.gc_index();
+ gc_stat->start_time = Management::ticks_to_ms(stat.start_time());
+ gc_stat->end_time = Management::ticks_to_ms(stat.end_time());
// Current implementation does not have GC extension attributes
gc_stat->num_gc_ext_attributes = 0;
@@ -2073,17 +2060,17 @@
objArrayHandle usage_after_gc_ah(THREAD, au);
for (int i = 0; i < num_pools; i++) {
- Handle before_usage = MemoryService::create_MemoryUsage_obj(stat->before_gc_usage_for_pool(i), CHECK);
+ Handle before_usage = MemoryService::create_MemoryUsage_obj(stat.before_gc_usage_for_pool(i), CHECK);
Handle after_usage;
- MemoryUsage u = stat->after_gc_usage_for_pool(i);
+ MemoryUsage u = stat.after_gc_usage_for_pool(i);
if (u.max_size() == 0 && u.used() > 0) {
// If max size == 0, this pool is a survivor space.
// Set max size = -1 since the pools will be swapped after GC.
MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1);
after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK);
} else {
- after_usage = MemoryService::create_MemoryUsage_obj(stat->after_gc_usage_for_pool(i), CHECK);
+ after_usage = MemoryService::create_MemoryUsage_obj(stat.after_gc_usage_for_pool(i), CHECK);
}
usage_before_gc_ah->obj_at_put(i, before_usage());
usage_after_gc_ah->obj_at_put(i, after_usage());
--- a/hotspot/src/share/vm/services/memoryManager.cpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/services/memoryManager.cpp Wed Jul 05 18:01:11 2017 +0200
@@ -214,8 +214,8 @@
void GCMemoryManager::initialize_gc_stat_info() {
assert(MemoryService::num_memory_pools() > 0, "should have one or more memory pools");
- _last_gc_stat = new GCStatInfo(MemoryService::num_memory_pools());
- _current_gc_stat = new GCStatInfo(MemoryService::num_memory_pools());
+ _last_gc_stat = new(ResourceObj::C_HEAP) GCStatInfo(MemoryService::num_memory_pools());
+ _current_gc_stat = new(ResourceObj::C_HEAP) GCStatInfo(MemoryService::num_memory_pools());
// tracking concurrent collections we need two objects: one to update, and one to
// hold the publicly available "last (completed) gc" information.
}
--- a/hotspot/src/share/vm/services/memoryManager.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/services/memoryManager.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -108,7 +108,7 @@
const char* name() { return "CodeCacheManager"; }
};
-class GCStatInfo : public CHeapObj {
+class GCStatInfo : public ResourceObj {
private:
size_t _index;
jlong _start_time;
--- a/hotspot/src/share/vm/utilities/bitMap.inline.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/utilities/bitMap.inline.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2012, 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
@@ -178,8 +178,30 @@
for (; !(res & 1); res_offset++) {
res = res >> 1;
}
- assert(res_offset >= l_offset &&
- res_offset < r_offset, "just checking");
+
+#ifdef ASSERT
+ // In the following assert, if r_offset is not bitamp word aligned,
+ // checking that res_offset is strictly less than r_offset is too
+ // strong and will trip the assert.
+ //
+ // Consider the case where l_offset is bit 15 and r_offset is bit 17
+ // of the same map word, and where bits [15:16:17:18] == [00:00:00:01].
+ // All the bits in the range [l_offset:r_offset) are 0.
+ // The loop that calculates res_offset, above, would yield the offset
+ // of bit 18 because it's in the same map word as l_offset and there
+ // is a set bit in that map word above l_offset (i.e. res != NoBits).
+ //
+ // In this case, however, we can assert is that res_offset is strictly
+ // less than size() since we know that there is at least one set bit
+ // at an offset above, but in the same map word as, r_offset.
+ // Otherwise, if r_offset is word aligned then it will not be in the
+ // same map word as l_offset (unless it equals l_offset). So either
+ // there won't be a set bit between l_offset and the end of it's map
+ // word (i.e. res == NoBits), or res_offset will be less than r_offset.
+
+ idx_t limit = is_word_aligned(r_offset) ? r_offset : size();
+ assert(res_offset >= l_offset && res_offset < limit, "just checking");
+#endif // ASSERT
return MIN2(res_offset, r_offset);
}
// skip over all word length 0-bit runs
--- a/hotspot/src/share/vm/utilities/exceptions.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/utilities/exceptions.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -189,6 +189,13 @@
#define CHECK_NULL CHECK_(NULL)
#define CHECK_false CHECK_(false)
+#define CHECK_AND_CLEAR THREAD); if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; return; } (0
+#define CHECK_AND_CLEAR_(result) THREAD); if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; return result; } (0
+#define CHECK_AND_CLEAR_0 CHECK_AND_CLEAR_(0)
+#define CHECK_AND_CLEAR_NH CHECK_AND_CLEAR_(Handle())
+#define CHECK_AND_CLEAR_NULL CHECK_AND_CLEAR_(NULL)
+#define CHECK_AND_CLEAR_false CHECK_AND_CLEAR_(false)
+
// The THROW... macros should be used to throw an exception. They require a THREAD variable to be
// visible within the scope containing the THROW. Usually this is achieved by declaring the function
// with a TRAPS argument.
@@ -258,7 +265,6 @@
ShouldNotReachHere(); \
} (0
-
// ExceptionMark is a stack-allocated helper class for local exception handling.
// It is used with the EXCEPTION_MARK macro.
--- a/hotspot/src/share/vm/utilities/globalDefinitions_visCPP.hpp Thu Jan 26 18:23:14 2012 -0800
+++ b/hotspot/src/share/vm/utilities/globalDefinitions_visCPP.hpp Wed Jul 05 18:01:11 2017 +0200
@@ -130,6 +130,9 @@
//----------------------------------------------------------------------------------------------------
// Non-standard stdlib-like stuff:
inline int strcasecmp(const char *s1, const char *s2) { return _stricmp(s1,s2); }
+inline int strncasecmp(const char *s1, const char *s2, size_t n) {
+ return _strnicmp(s1,s2,n);
+}
//----------------------------------------------------------------------------------------------------
--- a/jdk/.hgtags Thu Jan 26 18:23:14 2012 -0800
+++ b/jdk/.hgtags Wed Jul 05 18:01:11 2017 +0200
@@ -144,3 +144,4 @@
39e938cd1b82ec3aab0a9aa66fd8a0457cd0c9c2 jdk8-b20
664fa4fb0ee411ef048903c479f8b962fcdb2f4b jdk8-b21
dda27c73d8db4a9c7a23872b6f0c5106edcb2021 jdk8-b22
+54202e0148ec7d4570cab5bc9b00d216a7677569 jdk8-b23