--- a/make/autoconf/flags.m4 Wed Dec 13 12:45:06 2017 -0800
+++ b/make/autoconf/flags.m4 Fri Dec 08 23:43:25 2017 +0100
@@ -1166,7 +1166,9 @@
-I${TOPDIR}/src/java.base/$OPENJDK_$1_OS/native/include \
-I${TOPDIR}/src/java.base/$OPENJDK_$1_OS_TYPE/native/include \
-I${TOPDIR}/src/java.base/share/native/libjava \
- -I${TOPDIR}/src/java.base/$OPENJDK_$1_OS_TYPE/native/libjava"
+ -I${TOPDIR}/src/java.base/$OPENJDK_$1_OS_TYPE/native/libjava \
+ -I${TOPDIR}/src/hotspot/share/include \
+ -I${TOPDIR}/src/hotspot/os/${HOTSPOT_$1_OS_TYPE}/include"
# The shared libraries are compiled using the picflag.
$2CFLAGS_JDKLIB="[$]$2COMMON_CCXXFLAGS_JDK \
--- a/make/autoconf/generated-configure.sh Wed Dec 13 12:45:06 2017 -0800
+++ b/make/autoconf/generated-configure.sh Fri Dec 08 23:43:25 2017 +0100
@@ -972,7 +972,6 @@
HOTSPOT_BUILD_OS_TYPE
HOTSPOT_BUILD_OS
OPENJDK_BUILD_BUNDLE_PLATFORM
-OPENJDK_BUILD_OS_EXPORT_DIR
OPENJDK_BUILD_CPU_OSARCH
OPENJDK_BUILD_CPU_ISADIR
OPENJDK_BUILD_CPU_LEGACY_LIB
@@ -984,7 +983,6 @@
HOTSPOT_TARGET_OS
DEFINE_CROSS_COMPILE_ARCH
OPENJDK_TARGET_BUNDLE_PLATFORM
-OPENJDK_TARGET_OS_EXPORT_DIR
OPENJDK_TARGET_CPU_OSARCH
OPENJDK_TARGET_CPU_ISADIR
OPENJDK_TARGET_CPU_LEGACY_LIB
@@ -5159,7 +5157,7 @@
#CUSTOM_AUTOCONF_INCLUDE
# Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1512479382
+DATE_WHEN_GENERATED=1512638287
###############################################################################
#
@@ -16200,13 +16198,6 @@
OPENJDK_TARGET_CPU_JLI="amd64"
fi
- if test "x$OPENJDK_TARGET_OS" = xmacosx; then
- OPENJDK_TARGET_OS_EXPORT_DIR=macosx
- else
- OPENJDK_TARGET_OS_EXPORT_DIR=${OPENJDK_TARGET_OS_TYPE}
- fi
-
-
# The new version string in JDK 9 also defined new naming of OS and ARCH for bundles
# Macosx is osx and x86_64 is x64
if test "x$OPENJDK_TARGET_OS" = xmacosx; then
@@ -16358,13 +16349,6 @@
OPENJDK_BUILD_CPU_JLI="amd64"
fi
- if test "x$OPENJDK_BUILD_OS" = xmacosx; then
- OPENJDK_BUILD_OS_EXPORT_DIR=macosx
- else
- OPENJDK_BUILD_OS_EXPORT_DIR=${OPENJDK_BUILD_OS_TYPE}
- fi
-
-
# The new version string in JDK 9 also defined new naming of OS and ARCH for bundles
# Macosx is osx and x86_64 is x64
if test "x$OPENJDK_BUILD_OS" = xmacosx; then
@@ -52817,7 +52801,9 @@
-I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS/native/include \
-I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS_TYPE/native/include \
-I${TOPDIR}/src/java.base/share/native/libjava \
- -I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS_TYPE/native/libjava"
+ -I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS_TYPE/native/libjava \
+ -I${TOPDIR}/src/hotspot/share/include \
+ -I${TOPDIR}/src/hotspot/os/${HOTSPOT_TARGET_OS_TYPE}/include"
# The shared libraries are compiled using the picflag.
CFLAGS_JDKLIB="$COMMON_CCXXFLAGS_JDK \
@@ -53698,7 +53684,9 @@
-I${TOPDIR}/src/java.base/$OPENJDK_BUILD_OS/native/include \
-I${TOPDIR}/src/java.base/$OPENJDK_BUILD_OS_TYPE/native/include \
-I${TOPDIR}/src/java.base/share/native/libjava \
- -I${TOPDIR}/src/java.base/$OPENJDK_BUILD_OS_TYPE/native/libjava"
+ -I${TOPDIR}/src/java.base/$OPENJDK_BUILD_OS_TYPE/native/libjava \
+ -I${TOPDIR}/src/hotspot/share/include \
+ -I${TOPDIR}/src/hotspot/os/${HOTSPOT_BUILD_OS_TYPE}/include"
# The shared libraries are compiled using the picflag.
OPENJDK_BUILD_CFLAGS_JDKLIB="$OPENJDK_BUILD_COMMON_CCXXFLAGS_JDK \
--- a/make/autoconf/platform.m4 Wed Dec 13 12:45:06 2017 -0800
+++ b/make/autoconf/platform.m4 Fri Dec 08 23:43:25 2017 +0100
@@ -388,13 +388,6 @@
OPENJDK_$1_CPU_JLI="amd64"
fi
- if test "x$OPENJDK_$1_OS" = xmacosx; then
- OPENJDK_$1_OS_EXPORT_DIR=macosx
- else
- OPENJDK_$1_OS_EXPORT_DIR=${OPENJDK_$1_OS_TYPE}
- fi
- AC_SUBST(OPENJDK_$1_OS_EXPORT_DIR)
-
# The new version string in JDK 9 also defined new naming of OS and ARCH for bundles
# Macosx is osx and x86_64 is x64
if test "x$OPENJDK_$1_OS" = xmacosx; then
--- a/make/autoconf/spec.gmk.in Wed Dec 13 12:45:06 2017 -0800
+++ b/make/autoconf/spec.gmk.in Fri Dec 08 23:43:25 2017 +0100
@@ -78,7 +78,6 @@
OPENJDK_TARGET_CPU_LEGACY:=@OPENJDK_TARGET_CPU_LEGACY@
OPENJDK_TARGET_CPU_LEGACY_LIB:=@OPENJDK_TARGET_CPU_LEGACY_LIB@
OPENJDK_TARGET_CPU_OSARCH:=@OPENJDK_TARGET_CPU_OSARCH@
-OPENJDK_TARGET_OS_EXPORT_DIR:=@OPENJDK_TARGET_OS_EXPORT_DIR@
HOTSPOT_TARGET_OS := @HOTSPOT_TARGET_OS@
HOTSPOT_TARGET_OS_TYPE := @HOTSPOT_TARGET_OS_TYPE@
--- a/make/copy/Copy-java.base.gmk Wed Dec 13 12:45:06 2017 -0800
+++ b/make/copy/Copy-java.base.gmk Fri Dec 08 23:43:25 2017 +0100
@@ -28,24 +28,6 @@
$(eval $(call IncludeCustomExtension, copy/Copy-java.base.gmk))
################################################################################
-#
-# Copy exported header files to outputdir.
-#
-TARGETS += \
- $(INCLUDE_DST_DIR)/jni.h \
- $(INCLUDE_DST_DIR)/jvmticmlr.h \
- $(INCLUDE_DST_DIR)/classfile_constants.h \
- $(INCLUDE_DST_OS_DIR)/jni_md.h \
- #
-
-$(INCLUDE_DST_DIR)/%.h: $(TOPDIR)/src/java.base/share/native/include/%.h
- $(call install-file)
-
-$(INCLUDE_DST_OS_DIR)/%.h: \
- $(TOPDIR)/src/java.base/$(OPENJDK_TARGET_OS_TYPE)/native/include/%.h
- $(call install-file)
-
-################################################################################
ifneq ($(findstring $(OPENJDK_TARGET_OS), windows aix),)
--- a/make/copy/Copy-java.desktop.gmk Wed Dec 13 12:45:06 2017 -0800
+++ b/make/copy/Copy-java.desktop.gmk Fri Dec 08 23:43:25 2017 +0100
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2017, 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
@@ -29,20 +29,6 @@
################################################################################
-TARGETS += \
- $(INCLUDE_DST_DIR)/jawt.h \
- $(INCLUDE_DST_OS_DIR)/jawt_md.h \
- #
-
-$(INCLUDE_DST_DIR)/%.h: $(TOPDIR)/src/java.desktop/share/native/include/%.h
- $(call install-file)
-
-$(INCLUDE_DST_OS_DIR)/%.h: \
- $(TOPDIR)/src/java.desktop/$(OPENJDK_TARGET_OS_EXPORT_DIR)/native/include/%.h
- $(call install-file)
-
-################################################################################
-
ifneq ($(FREETYPE_BUNDLE_LIB_PATH), )
# We need to bundle the freetype library, so it will be available at runtime
# as well as link time.
--- a/make/copy/Copy-jdk.accessibility.gmk Wed Dec 13 12:45:06 2017 -0800
+++ b/make/copy/Copy-jdk.accessibility.gmk Fri Dec 08 23:43:25 2017 +0100
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2104, 2016, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2017, 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
@@ -23,19 +23,7 @@
# questions.
#
-include CopyCommon.gmk
-
################################################################################
+# Include CopyCommon.gmk to get exported header files to be properly copied.
-ifeq ($(OPENJDK_TARGET_OS), windows)
- TARGETS += $(INCLUDE_DST_OS_DIR)/bridge/AccessBridgeCallbacks.h \
- $(INCLUDE_DST_OS_DIR)/bridge/AccessBridgeCalls.h \
- $(INCLUDE_DST_OS_DIR)/bridge/AccessBridgePackages.h
-
- $(INCLUDE_DST_OS_DIR)/bridge/%: \
- $(TOPDIR)/src/jdk.accessibility/windows/native/include/bridge/%
- $(install-file)
-
-endif
-
-################################################################################
+include CopyCommon.gmk
--- a/make/copy/Copy-jdk.jdwp.agent.gmk Wed Dec 13 12:45:06 2017 -0800
+++ b/make/copy/Copy-jdk.jdwp.agent.gmk Fri Dec 08 23:43:25 2017 +0100
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2017, 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
@@ -23,13 +23,7 @@
# questions.
#
-include CopyCommon.gmk
-
################################################################################
+# Include CopyCommon.gmk to get exported header files to be properly copied.
-TARGETS := $(INCLUDE_DST_DIR)/jdwpTransport.h
-
-$(INCLUDE_DST_DIR)/%.h: $(TOPDIR)/src/jdk.jdwp.agent/share/native/include/%.h
- $(call install-file)
-
-################################################################################
+include CopyCommon.gmk
--- a/make/copy/CopyCommon.gmk Wed Dec 13 12:45:06 2017 -0800
+++ b/make/copy/CopyCommon.gmk Fri Dec 08 23:43:25 2017 +0100
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2017, 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
@@ -23,15 +23,48 @@
# questions.
#
-INCLUDE_DST_DIR := $(SUPPORT_OUTPUTDIR)/modules_include/$(MODULE)
LIB_DST_DIR := $(SUPPORT_OUTPUTDIR)/modules_libs/$(MODULE)
CONF_DST_DIR := $(SUPPORT_OUTPUTDIR)/modules_conf/$(MODULE)
LEGAL_DST_DIR := $(SUPPORT_OUTPUTDIR)/modules_legal/$(MODULE)
-INCLUDE_DST_OS_DIR := $(INCLUDE_DST_DIR)/$(OPENJDK_TARGET_OS)
+################################################################################
+#
+# Copy exported include headers files to output directory, if present.
+#
+
+INCLUDE_TARGET_DIR := $(SUPPORT_OUTPUTDIR)/modules_include/$(MODULE)
+INCLUDE_SOURCE_DIR := $(TOPDIR)/src/$(MODULE)/share/native/include
+ifneq ($(wildcard $(INCLUDE_SOURCE_DIR)/*), )
+ $(eval $(call SetupCopyFiles, COPY_EXPORTED_INCLUDE, \
+ SRC := $(INCLUDE_SOURCE_DIR), \
+ DEST := $(INCLUDE_TARGET_DIR), \
+ FILES := $(shell $(FIND) $(INCLUDE_SOURCE_DIR) -type f), \
+ ))
+
+ TARGETS += $(COPY_EXPORTED_INCLUDE)
+endif
+
+# For historical reasons, the OS include directories have odd names.
+INCLUDE_TARGET_OS_SUBDIR := $(OPENJDK_TARGET_OS)
ifeq ($(OPENJDK_TARGET_OS), windows)
- INCLUDE_DST_OS_DIR := $(INCLUDE_DST_DIR)/win32
+ INCLUDE_TARGET_OS_SUBDIR := win32
else ifeq ($(OPENJDK_TARGET_OS), macosx)
- INCLUDE_DST_OS_DIR := $(INCLUDE_DST_DIR)/darwin
+ INCLUDE_TARGET_OS_SUBDIR := darwin
+endif
+
+# Use the most specific of OS and OS_TYPE.
+INCLUDE_SOURCE_OS_DIR := $(TOPDIR)/src/$(MODULE)/$(OPENJDK_TARGET_OS)/native/include
+ifeq ($(wildcard $(INCLUDE_SOURCE_OS_DIR)/*), )
+ INCLUDE_SOURCE_OS_DIR := $(TOPDIR)/src/$(MODULE)/$(OPENJDK_TARGET_OS_TYPE)/native/include
endif
+
+ifneq ($(wildcard $(INCLUDE_SOURCE_OS_DIR)/*), )
+ $(eval $(call SetupCopyFiles, COPY_EXPORTED_INCLUDE_OS, \
+ SRC := $(INCLUDE_SOURCE_OS_DIR), \
+ DEST := $(INCLUDE_TARGET_DIR)/$(INCLUDE_TARGET_OS_SUBDIR), \
+ FILES := $(shell $(FIND) $(INCLUDE_SOURCE_OS_DIR) -type f), \
+ ))
+
+ TARGETS += $(COPY_EXPORTED_INCLUDE_OS)
+endif
--- a/make/gensrc/GensrcX11Wrappers.gmk Wed Dec 13 12:45:06 2017 -0800
+++ b/make/gensrc/GensrcX11Wrappers.gmk Fri Dec 08 23:43:25 2017 +0100
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2012, 2017, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it
@@ -92,8 +92,10 @@
endif
SIZER_CFLAGS := \
+ -I${TOPDIR}/src/hotspot/share/include \
+ -I${TOPDIR}/src/hotspot/os/$(HOTSPOT_TARGET_OS_TYPE)/include \
-I$(TOPDIR)/src/java.base/share/native/include \
- -I$(TOPDIR)/src/java.base/$(OPENJDK_TARGET_OS_EXPORT_DIR)/native/include \
+ -I$(TOPDIR)/src/java.base/$(OPENJDK_TARGET_OS_TYPE)/native/include \
-I$(TOPDIR)/src/java.base/share/native/libjava \
-I$(TOPDIR)/src/java.base/$(OPENJDK_TARGET_OS_TYPE)/native/libjava \
-I$(TOPDIR)/src/java.desktop/$(OPENJDK_TARGET_OS_TYPE)/native/common/awt \
--- a/make/hotspot/lib/CompileJvm.gmk Wed Dec 13 12:45:06 2017 -0800
+++ b/make/hotspot/lib/CompileJvm.gmk Fri Dec 08 23:43:25 2017 +0100
@@ -57,9 +57,10 @@
$(patsubst %,-I%,$(filter-out $(JVM_VARIANT_OUTPUTDIR)/gensrc/%, $(JVM_SRC_DIRS))) \
-I$(JVM_VARIANT_OUTPUTDIR)/gensrc \
-I$(TOPDIR)/src/hotspot/share/precompiled \
+ -I$(TOPDIR)/src/hotspot/share/include \
+ -I$(TOPDIR)/src/hotspot/os/$(HOTSPOT_TARGET_OS_TYPE)/include \
-I$(TOPDIR)/src/java.base/share/native/include \
-I$(TOPDIR)/src/java.base/$(OPENJDK_TARGET_OS_TYPE)/native/include \
- -I$(TOPDIR)/src/java.management/share/native/include \
-I$(TOPDIR)/src/java.base/share/native/libjimage \
#
--- a/make/hotspot/lib/CompileLibjsig.gmk Wed Dec 13 12:45:06 2017 -0800
+++ b/make/hotspot/lib/CompileLibjsig.gmk Fri Dec 08 23:43:25 2017 +0100
@@ -57,7 +57,7 @@
endif
else ifeq ($(OPENJDK_TARGET_OS), solaris)
- LIBJSIG_CFLAGS := -m64 -KPIC -mt -I $(TOPDIR)/src/java.base/unix/native/include
+ LIBJSIG_CFLAGS := -m64 -KPIC -mt -I $(TOPDIR)/src/hotspot/os/$(HOTSPOT_TARGET_OS_TYPE)/include
LIBJSIG_LDFLAGS := -m64 -mt -xnolib
LIBJSIG_LIBS := $(LIBDL)
--- a/make/jprt.properties Wed Dec 13 12:45:06 2017 -0800
+++ b/make/jprt.properties Fri Dec 08 23:43:25 2017 +0100
@@ -177,6 +177,7 @@
# Not all test targets need the test image
jprt.test.bundle.targets=\
+ ${my.make.rule.test.targets.svc}, \
${my.make.rule.test.targets.hotspot.reg}, \
${my.make.rule.test.targets.hotspot.gtest} \
${my.make.rule.test.targets.nativesanity} \
--- a/make/lib/Lib-java.management.gmk Wed Dec 13 12:45:06 2017 -0800
+++ b/make/lib/Lib-java.management.gmk Fri Dec 08 23:43:25 2017 +0100
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2017, 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
@@ -30,8 +30,8 @@
################################################################################
-LIBMANAGEMENT_SRC += $(TOPDIR)/src/java.management/share/native/libmanagement
-LIBMANAGEMENT_CFLAGS := -I$(TOPDIR)/src/java.management/share/native/include \
+LIBMANAGEMENT_SRC += $(TOPDIR)/src/java.management/share/native/libmanagement
+LIBMANAGEMENT_CFLAGS := -I$(TOPDIR)/src/hotspot/share/include \
$(addprefix -I,$(LIBMANAGEMENT_SRC)) \
-I$(SUPPORT_OUTPUTDIR)/headers/java.management \
$(LIBJAVA_HEADER_FLAGS) \
--- a/src/hotspot/cpu/sparc/stubGenerator_sparc.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/cpu/sparc/stubGenerator_sparc.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -5157,8 +5157,8 @@
const Register gxp = G1; // Need to use global registers across RWs.
const Register gyp = G2;
const Register gzp = G3;
- const Register offs = G4;
- const Register disp = G5;
+ const Register disp = G4;
+ const Register offs = G5;
__ mov(xptr, gxp);
__ mov(yptr, gyp);
@@ -5569,8 +5569,8 @@
// for (int i = xn; i >= 0; i--)
__ bind(L_loop_i);
- __ cmp_and_br_short(xpc, xp,// i >= 0
- Assembler::less, Assembler::pn, L_exit_loop_i);
+ __ cmp_and_brx_short(xpc, xp,// i >= 0
+ Assembler::lessUnsigned, Assembler::pn, L_exit_loop_i);
__ lduw(xpc, 0, rt); // u64 x = xp[i]
__ lduw(xpc, 4, rx); // ...
__ sllx(rt, 32, rt);
@@ -5598,8 +5598,8 @@
__ bind(L_loop_j);
- __ cmp_and_br_short(ypc, yp,// j >= 0
- Assembler::less, Assembler::pn, L_exit);
+ __ cmp_and_brx_short(ypc, yp,// j >= 0
+ Assembler::lessUnsigned, Assembler::pn, L_exit);
__ clr(rc); // u64 c = 0
__ lduw(ypc, 0, rt); // u64 y = yp[j] (= *ypc)
__ lduw(ypc, 4, ry); // ...
@@ -5615,8 +5615,8 @@
__ bind(L_loop_i2);
- __ cmp_and_br_short(xpc, xp,// i >= 0
- Assembler::less, Assembler::pn, L_exit_loop_i2);
+ __ cmp_and_brx_short(xpc, xp,// i >= 0
+ Assembler::lessUnsigned, Assembler::pn, L_exit_loop_i2);
__ lduw(xpc, 0, rt); // u64 x = xp[i] (= *xpc)
__ lduw(xpc, 4, rx); // ...
__ sllx(rt, 32, rt);
--- a/src/hotspot/cpu/x86/assembler_x86.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/cpu/x86/assembler_x86.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -7449,6 +7449,27 @@
emit_int8((unsigned char)(0xF0 & src2_enc<<4));
}
+void Assembler::cmpps(XMMRegister dst, XMMRegister nds, XMMRegister src, int cop, int vector_len) {
+ assert(VM_Version::supports_avx(), "");
+ assert(!VM_Version::supports_evex(), "");
+ InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+ int encode = simd_prefix_and_encode(dst, nds, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+ emit_int8((unsigned char)0xC2);
+ emit_int8((unsigned char)(0xC0 | encode));
+ emit_int8((unsigned char)(0xF & cop));
+}
+
+void Assembler::blendvps(XMMRegister dst, XMMRegister nds, XMMRegister src1, XMMRegister src2, int vector_len) {
+ assert(VM_Version::supports_avx(), "");
+ assert(!VM_Version::supports_evex(), "");
+ InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
+ int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src1->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
+ emit_int8((unsigned char)0x4A);
+ emit_int8((unsigned char)(0xC0 | encode));
+ int src2_enc = src2->encoding();
+ emit_int8((unsigned char)(0xF0 & src2_enc<<4));
+}
+
void Assembler::vpblendd(XMMRegister dst, XMMRegister nds, XMMRegister src, int imm8, int vector_len) {
assert(VM_Version::supports_avx2(), "");
InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ false, /* uses_vl */ false);
--- a/src/hotspot/cpu/x86/assembler_x86.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/cpu/x86/assembler_x86.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -2114,9 +2114,11 @@
// runtime code and native libraries.
void vzeroupper();
- // AVX support for vectorized conditional move (double). The following two instructions used only coupled.
+ // AVX support for vectorized conditional move (float/double). The following two instructions used only coupled.
void cmppd(XMMRegister dst, XMMRegister nds, XMMRegister src, int cop, int vector_len);
void blendvpd(XMMRegister dst, XMMRegister nds, XMMRegister src1, XMMRegister src2, int vector_len);
+ void cmpps(XMMRegister dst, XMMRegister nds, XMMRegister src, int cop, int vector_len);
+ void blendvps(XMMRegister dst, XMMRegister nds, XMMRegister src1, XMMRegister src2, int vector_len);
void vpblendd(XMMRegister dst, XMMRegister nds, XMMRegister src, int imm8, int vector_len);
protected:
--- a/src/hotspot/cpu/x86/x86.ad Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/cpu/x86/x86.ad Fri Dec 08 23:43:25 2017 +0100
@@ -1263,6 +1263,7 @@
if (!VM_Version::supports_cx8())
ret_value = false;
break;
+ case Op_CMoveVF:
case Op_CMoveVD:
if (UseAVX < 1 || UseAVX > 2)
ret_value = false;
@@ -1304,6 +1305,9 @@
if ((vlen == 32) && (VM_Version::supports_avx512bw() == false))
ret_value = false;
break;
+ case Op_CMoveVF:
+ if (vlen != 8)
+ ret_value = false;
case Op_CMoveVD:
if (vlen != 4)
ret_value = false;
@@ -8170,6 +8174,22 @@
ins_pipe( pipe_slow );
%}
+instruct vcmov8F_reg(vecY dst, vecY src1, vecY src2, immI8 cop, cmpOp_vcmppd copnd) %{
+ predicate(UseAVX > 0 && UseAVX < 3 && n->as_Vector()->length() == 8);
+ match(Set dst (CMoveVF (Binary copnd cop) (Binary src1 src2)));
+ effect(TEMP dst, USE src1, USE src2);
+ format %{ "cmpps.$copnd $dst, $src1, $src2 ! vcmovevf, cond=$cop\n\t"
+ "blendvps $dst,$src1,$src2,$dst ! vcmovevf\n\t"
+ %}
+ ins_encode %{
+ int vector_len = 1;
+ int cond = (Assembler::Condition)($copnd$$cmpcode);
+ __ cmpps($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, cond, vector_len);
+ __ blendvps($dst$$XMMRegister, $src1$$XMMRegister, $src2$$XMMRegister, $dst$$XMMRegister, vector_len);
+ %}
+ ins_pipe( pipe_slow );
+%}
+
instruct vcmov4D_reg(vecY dst, vecY src1, vecY src2, immI8 cop, cmpOp_vcmppd copnd) %{
predicate(UseAVX > 0 && UseAVX < 3 && n->as_Vector()->length() == 4);
match(Set dst (CMoveVD (Binary copnd cop) (Binary src1 src2)));
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/os/posix/include/jvm_md.h Fri Dec 08 23:43:25 2017 +0100
@@ -0,0 +1,100 @@
+/*
+ * 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 _JAVASOFT_JVM_MD_H_
+#define _JAVASOFT_JVM_MD_H_
+
+/*
+ * This file is currently collecting system-specific dregs for the
+ * JNI conversion, which should be sorted out later.
+ */
+
+#include <dirent.h> /* For DIR */
+#include <sys/param.h> /* For MAXPATHLEN */
+#include <unistd.h> /* For F_OK, R_OK, W_OK */
+#include <stddef.h> /* For ptrdiff_t */
+#include <stdint.h> /* For uintptr_t */
+
+#define JNI_ONLOAD_SYMBOLS {"JNI_OnLoad"}
+#define JNI_ONUNLOAD_SYMBOLS {"JNI_OnUnload"}
+#define JVM_ONLOAD_SYMBOLS {"JVM_OnLoad"}
+#define AGENT_ONLOAD_SYMBOLS {"Agent_OnLoad"}
+#define AGENT_ONUNLOAD_SYMBOLS {"Agent_OnUnload"}
+#define AGENT_ONATTACH_SYMBOLS {"Agent_OnAttach"}
+
+#define JNI_LIB_PREFIX "lib"
+#ifdef __APPLE__
+#define JNI_LIB_SUFFIX ".dylib"
+#define VERSIONED_JNI_LIB_NAME(NAME, VERSION) JNI_LIB_PREFIX NAME "." VERSION JNI_LIB_SUFFIX
+#else
+#define JNI_LIB_SUFFIX ".so"
+#define VERSIONED_JNI_LIB_NAME(NAME, VERSION) JNI_LIB_PREFIX NAME JNI_LIB_SUFFIX "." VERSION
+#endif
+#define JNI_LIB_NAME(NAME) JNI_LIB_PREFIX NAME JNI_LIB_SUFFIX
+
+#if defined(AIX) || defined(SOLARIS)
+#define JVM_MAXPATHLEN MAXPATHLEN
+#else
+// Hack: MAXPATHLEN is 4095 on some Linux and 4096 on others. This may
+// cause problems if JVM and the rest of JDK are built on different
+// Linux releases. Here we define JVM_MAXPATHLEN to be MAXPATHLEN + 1,
+// so buffers declared in VM are always >= 4096.
+#define JVM_MAXPATHLEN MAXPATHLEN + 1
+#endif
+
+#define JVM_R_OK R_OK
+#define JVM_W_OK W_OK
+#define JVM_X_OK X_OK
+#define JVM_F_OK F_OK
+
+/*
+ * File I/O
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <signal.h>
+
+/* Signals */
+
+#include <sys/socket.h> // for socklen_t
+
+#define JVM_SIGINT SIGINT
+#define JVM_SIGTERM SIGTERM
+
+#define BREAK_SIGNAL SIGQUIT /* Thread dumping support. */
+#ifdef SOLARIS
+#define ASYNC_SIGNAL SIGJVM2 /* Event-based suspend/resume support */
+#endif // SOLARIS
+#define SHUTDOWN1_SIGNAL SIGHUP /* Shutdown Hooks support. */
+#define SHUTDOWN2_SIGNAL SIGINT
+#define SHUTDOWN3_SIGNAL SIGTERM
+
+/* With 1.4.1 libjsig added versioning: used in os_solaris.cpp and jsig.c */
+#define JSIG_VERSION_1_4_1 0x30140100
+
+#endif /* !_JAVASOFT_JVM_MD_H_ */
--- a/src/hotspot/os/posix/os_posix.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/os/posix/os_posix.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -243,8 +243,9 @@
assert(fd != -1, "File descriptor is not valid");
// allocate space for the file
- if (util_posix_fallocate(fd, 0, (off_t)size) != 0) {
- vm_exit_during_initialization(err_msg("Error in mapping Java heap at the given filesystem directory."));
+ int ret = util_posix_fallocate(fd, 0, (off_t)size);
+ if (ret != 0) {
+ vm_exit_during_initialization(err_msg("Error in mapping Java heap at the given filesystem directory. error(%d)", ret));
return NULL;
}
@@ -256,12 +257,13 @@
char* addr = (char*)mmap(base, size, prot, flags, fd, 0);
if (addr == MAP_FAILED) {
+ warning("Failed mmap to file. (%s)", os::strerror(errno));
return NULL;
}
if (base != NULL && addr != base) {
if (!os::release_memory(addr, size)) {
warning("Could not release memory on unsuccessful file mapping");
- }
+ }
return NULL;
}
return addr;
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/os/windows/include/jvm_md.h Fri Dec 08 23:43:25 2017 +0100
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 1997, 2008, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 _JAVASOFT_JVM_MD_H_
+#define _JAVASOFT_JVM_MD_H_
+
+/*
+ * This file is currently collecting system-specific dregs for the
+ * JNI conversion, which should be sorted out later.
+ */
+
+#include <windows.h>
+#include <windef.h>
+#include <winbase.h>
+
+#include "jni.h"
+
+typedef int socklen_t;
+
+#define JNI_ONLOAD_SYMBOLS {"_JNI_OnLoad@8", "JNI_OnLoad"}
+#define JNI_ONUNLOAD_SYMBOLS {"_JNI_OnUnload@8", "JNI_OnUnload"}
+#define JVM_ONLOAD_SYMBOLS {"_JVM_OnLoad@12", "JVM_OnLoad"}
+#define AGENT_ONLOAD_SYMBOLS {"_Agent_OnLoad@12", "Agent_OnLoad"}
+#define AGENT_ONUNLOAD_SYMBOLS {"_Agent_OnUnload@4", "Agent_OnUnload"}
+#define AGENT_ONATTACH_SYMBOLS {"_Agent_OnAttach@12", "Agent_OnAttach"}
+
+#define JNI_LIB_PREFIX ""
+#define JNI_LIB_SUFFIX ".dll"
+
+struct dirent {
+ char d_name[MAX_PATH];
+};
+
+typedef struct {
+ struct dirent dirent;
+ char *path;
+ HANDLE handle;
+ WIN32_FIND_DATA find_data;
+} DIR;
+
+#include <stddef.h> /* For uintptr_t */
+#include <stdlib.h>
+
+#define JVM_MAXPATHLEN _MAX_PATH
+
+#define JVM_R_OK 4
+#define JVM_W_OK 2
+#define JVM_X_OK 1
+#define JVM_F_OK 0
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+JNIEXPORT void * JNICALL
+JVM_GetThreadInterruptEvent();
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif /* __cplusplus */
+
+/*
+ * File I/O
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <signal.h>
+
+/* Signals */
+
+#define JVM_SIGINT SIGINT
+#define JVM_SIGTERM SIGTERM
+
+#define SHUTDOWN1_SIGNAL SIGINT /* Shutdown Hooks support. */
+#define SHUTDOWN2_SIGNAL SIGTERM
+
+#endif /* !_JAVASOFT_JVM_MD_H_ */
--- a/src/hotspot/share/adlc/formssel.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/adlc/formssel.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -4164,7 +4164,7 @@
"AddVB","AddVS","AddVI","AddVL","AddVF","AddVD",
"SubVB","SubVS","SubVI","SubVL","SubVF","SubVD",
"MulVS","MulVI","MulVL","MulVF","MulVD",
- "CMoveVD",
+ "CMoveVD", "CMoveVF",
"DivVF","DivVD",
"AbsVF","AbsVD",
"NegVF","NegVD",
--- a/src/hotspot/share/c1/c1_GraphBuilder.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/c1/c1_GraphBuilder.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -1439,6 +1439,9 @@
}
if (needs_check) {
+ // Not a trivial method because C2 can do better with inlined check.
+ compilation()->set_would_profile(true);
+
// Perform the registration of finalizable objects.
ValueStack* state_before = copy_state_for_exception();
load_local(objectType, 0);
@@ -3556,6 +3559,9 @@
}
bool GraphBuilder::try_inline_intrinsics(ciMethod* callee, bool ignore_return) {
+ // Not a trivial method because C2 may do intrinsics better.
+ compilation()->set_would_profile(true);
+
// For calling is_intrinsic_available we need to transition to
// the '_thread_in_vm' state because is_intrinsic_available()
// accesses critical VM-internal data.
--- a/src/hotspot/share/ci/ciEnv.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/ci/ciEnv.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -899,64 +899,18 @@
void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
if (failing()) return; // no need for further checks
- // First, check non-klass dependencies as we might return early and
- // not check klass dependencies if the system dictionary
- // modification counter hasn't changed (see below).
- for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
- if (deps.is_klass_type()) continue; // skip klass dependencies
- Klass* witness = deps.check_dependency();
- if (witness != NULL) {
- if (deps.type() == Dependencies::call_site_target_value) {
- _inc_decompile_count_on_failure = false;
- record_failure("call site target change");
- } else {
- record_failure("invalid non-klass dependency");
- }
- return;
+ bool counter_changed = system_dictionary_modification_counter_changed();
+ Dependencies::DepType result = dependencies()->validate_dependencies(_task, counter_changed);
+ if (result != Dependencies::end_marker) {
+ if (result == Dependencies::call_site_target_value) {
+ _inc_decompile_count_on_failure = false;
+ record_failure("call site target change");
+ } else if (Dependencies::is_klass_type(result)) {
+ record_failure("invalid non-klass dependency");
+ } else {
+ record_failure("concurrent class loading");
}
}
-
- // Klass dependencies must be checked when the system dictionary
- // changes. If logging is enabled all violated dependences will be
- // recorded in the log. In debug mode check dependencies even if
- // the system dictionary hasn't changed to verify that no invalid
- // dependencies were inserted. Any violated dependences in this
- // case are dumped to the tty.
- bool counter_changed = system_dictionary_modification_counter_changed();
-
- bool verify_deps = trueInDebug;
- if (!counter_changed && !verify_deps) return;
-
- int klass_violations = 0;
- for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
- if (!deps.is_klass_type()) continue; // skip non-klass dependencies
- Klass* witness = deps.check_dependency();
- if (witness != NULL) {
- klass_violations++;
- if (!counter_changed) {
- // Dependence failed but counter didn't change. Log a message
- // describing what failed and allow the assert at the end to
- // trigger.
- deps.print_dependency(witness);
- } else if (xtty == NULL) {
- // If we're not logging then a single violation is sufficient,
- // otherwise we want to log all the dependences which were
- // violated.
- break;
- }
- }
- }
-
- if (klass_violations != 0) {
-#ifdef ASSERT
- if (!counter_changed && !PrintCompilation) {
- // Print out the compile task that failed
- _task->print_tty();
- }
-#endif
- assert(counter_changed, "failed dependencies, but counter didn't change");
- record_failure("concurrent class loading");
- }
}
// ------------------------------------------------------------------
--- a/src/hotspot/share/code/dependencies.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/code/dependencies.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -30,6 +30,8 @@
#include "classfile/javaClasses.inline.hpp"
#include "code/dependencies.hpp"
#include "compiler/compileLog.hpp"
+#include "compiler/compileBroker.hpp"
+#include "compiler/compileTask.hpp"
#include "memory/resourceArea.hpp"
#include "oops/oop.inline.hpp"
#include "oops/objArrayKlass.hpp"
@@ -620,6 +622,72 @@
guarantee(FIRST_TYPE <= dept && dept < TYPE_LIMIT, "invalid dependency type: %d", (int) dept);
}
+Dependencies::DepType Dependencies::validate_dependencies(CompileTask* task, bool counter_changed, char** failure_detail) {
+ // First, check non-klass dependencies as we might return early and
+ // not check klass dependencies if the system dictionary
+ // modification counter hasn't changed (see below).
+ for (Dependencies::DepStream deps(this); deps.next(); ) {
+ if (deps.is_klass_type()) continue; // skip klass dependencies
+ Klass* witness = deps.check_dependency();
+ if (witness != NULL) {
+ return deps.type();
+ }
+ }
+
+ // Klass dependencies must be checked when the system dictionary
+ // changes. If logging is enabled all violated dependences will be
+ // recorded in the log. In debug mode check dependencies even if
+ // the system dictionary hasn't changed to verify that no invalid
+ // dependencies were inserted. Any violated dependences in this
+ // case are dumped to the tty.
+ if (!counter_changed && !trueInDebug) {
+ return end_marker;
+ }
+
+ int klass_violations = 0;
+ DepType result = end_marker;
+ for (Dependencies::DepStream deps(this); deps.next(); ) {
+ if (!deps.is_klass_type()) continue; // skip non-klass dependencies
+ Klass* witness = deps.check_dependency();
+ if (witness != NULL) {
+ if (klass_violations == 0) {
+ result = deps.type();
+ if (failure_detail != NULL && klass_violations == 0) {
+ // Use a fixed size buffer to prevent the string stream from
+ // resizing in the context of an inner resource mark.
+ char* buffer = NEW_RESOURCE_ARRAY(char, O_BUFLEN);
+ stringStream st(buffer, O_BUFLEN);
+ deps.print_dependency(witness, true, &st);
+ *failure_detail = st.as_string();
+ }
+ }
+ klass_violations++;
+ if (!counter_changed) {
+ // Dependence failed but counter didn't change. Log a message
+ // describing what failed and allow the assert at the end to
+ // trigger.
+ deps.print_dependency(witness);
+ } else if (xtty == NULL) {
+ // If we're not logging then a single violation is sufficient,
+ // otherwise we want to log all the dependences which were
+ // violated.
+ break;
+ }
+ }
+ }
+
+ if (klass_violations != 0) {
+#ifdef ASSERT
+ if (task != NULL && !counter_changed && !PrintCompilation) {
+ // Print out the compile task that failed
+ task->print_tty();
+ }
+#endif
+ assert(counter_changed, "failed dependencies, but counter didn't change");
+ }
+ return result;
+}
+
// for the sake of the compiler log, print out current dependencies:
void Dependencies::log_all_dependencies() {
if (log() == NULL) return;
--- a/src/hotspot/share/code/dependencies.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/code/dependencies.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -457,6 +457,8 @@
void copy_to(nmethod* nm);
+ DepType validate_dependencies(CompileTask* task, bool counter_changed, char** failure_detail = NULL);
+
void log_all_dependencies();
void log_dependency(DepType dept, GrowableArray<ciBaseObject*>* args) {
--- a/src/hotspot/share/gc/g1/g1Arguments.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/gc/g1/g1Arguments.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -98,9 +98,9 @@
// Enable loop strip mining to offer better pause time guarantees
if (FLAG_IS_DEFAULT(UseCountedLoopSafepoints)) {
FLAG_SET_DEFAULT(UseCountedLoopSafepoints, true);
- }
- if (UseCountedLoopSafepoints && FLAG_IS_DEFAULT(LoopStripMiningIter)) {
- FLAG_SET_DEFAULT(LoopStripMiningIter, 1000);
+ if (FLAG_IS_DEFAULT(LoopStripMiningIter)) {
+ FLAG_SET_DEFAULT(LoopStripMiningIter, 1000);
+ }
}
#endif
}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/include/jmm.h Fri Dec 08 23:43:25 2017 +0100
@@ -0,0 +1,345 @@
+/*
+ * Copyright (c) 2003, 2017, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 _JAVA_JMM_H_
+#define _JAVA_JMM_H_
+
+/*
+ * This is a private interface used by JDK for JVM monitoring
+ * and management.
+ *
+ * Bump the version number when either of the following happens:
+ *
+ * 1. There is a change in functions in JmmInterface.
+ *
+ * 2. There is a change in the contract between VM and Java classes.
+ */
+
+#include "jni.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum {
+ JMM_VERSION_1 = 0x20010000,
+ JMM_VERSION_1_0 = 0x20010000,
+ JMM_VERSION_1_1 = 0x20010100, // JDK 6
+ JMM_VERSION_1_2 = 0x20010200, // JDK 7
+ JMM_VERSION_1_2_1 = 0x20010201, // JDK 7 GA
+ JMM_VERSION_1_2_2 = 0x20010202,
+ JMM_VERSION_2 = 0x20020000, // JDK 10
+ JMM_VERSION = 0x20020000
+};
+
+typedef struct {
+ unsigned int isLowMemoryDetectionSupported : 1;
+ unsigned int isCompilationTimeMonitoringSupported : 1;
+ unsigned int isThreadContentionMonitoringSupported : 1;
+ unsigned int isCurrentThreadCpuTimeSupported : 1;
+ unsigned int isOtherThreadCpuTimeSupported : 1;
+ unsigned int isObjectMonitorUsageSupported : 1;
+ unsigned int isSynchronizerUsageSupported : 1;
+ unsigned int isThreadAllocatedMemorySupported : 1;
+ unsigned int isRemoteDiagnosticCommandsSupported : 1;
+ unsigned int : 22;
+} jmmOptionalSupport;
+
+typedef enum {
+ JMM_CLASS_LOADED_COUNT = 1, /* Total number of loaded classes */
+ JMM_CLASS_UNLOADED_COUNT = 2, /* Total number of unloaded classes */
+ JMM_THREAD_TOTAL_COUNT = 3, /* Total number of threads that have been started */
+ JMM_THREAD_LIVE_COUNT = 4, /* Current number of live threads */
+ JMM_THREAD_PEAK_COUNT = 5, /* Peak number of live threads */
+ JMM_THREAD_DAEMON_COUNT = 6, /* Current number of daemon threads */
+ JMM_JVM_INIT_DONE_TIME_MS = 7, /* Time when the JVM finished initialization */
+ JMM_COMPILE_TOTAL_TIME_MS = 8, /* Total accumulated time spent in compilation */
+ JMM_GC_TIME_MS = 9, /* Total accumulated time spent in collection */
+ JMM_GC_COUNT = 10, /* Total number of collections */
+ JMM_JVM_UPTIME_MS = 11, /* The JVM uptime in milliseconds */
+
+ JMM_INTERNAL_ATTRIBUTE_INDEX = 100,
+ JMM_CLASS_LOADED_BYTES = 101, /* Number of bytes loaded instance classes */
+ JMM_CLASS_UNLOADED_BYTES = 102, /* Number of bytes unloaded instance classes */
+ JMM_TOTAL_CLASSLOAD_TIME_MS = 103, /* Accumulated VM class loader time (TraceClassLoadingTime) */
+ JMM_VM_GLOBAL_COUNT = 104, /* Number of VM internal flags */
+ JMM_SAFEPOINT_COUNT = 105, /* Total number of safepoints */
+ JMM_TOTAL_SAFEPOINTSYNC_TIME_MS = 106, /* Accumulated time spent getting to safepoints */
+ JMM_TOTAL_STOPPED_TIME_MS = 107, /* Accumulated time spent at safepoints */
+ JMM_TOTAL_APP_TIME_MS = 108, /* Accumulated time spent in Java application */
+ JMM_VM_THREAD_COUNT = 109, /* Current number of VM internal threads */
+ JMM_CLASS_INIT_TOTAL_COUNT = 110, /* Number of classes for which initializers were run */
+ JMM_CLASS_INIT_TOTAL_TIME_MS = 111, /* Accumulated time spent in class initializers */
+ JMM_METHOD_DATA_SIZE_BYTES = 112, /* Size of method data in memory */
+ JMM_CLASS_VERIFY_TOTAL_TIME_MS = 113, /* Accumulated time spent in class verifier */
+ JMM_SHARED_CLASS_LOADED_COUNT = 114, /* Number of shared classes loaded */
+ JMM_SHARED_CLASS_UNLOADED_COUNT = 115, /* Number of shared classes unloaded */
+ JMM_SHARED_CLASS_LOADED_BYTES = 116, /* Number of bytes loaded shared classes */
+ JMM_SHARED_CLASS_UNLOADED_BYTES = 117, /* Number of bytes unloaded shared classes */
+
+ JMM_OS_ATTRIBUTE_INDEX = 200,
+ JMM_OS_PROCESS_ID = 201, /* Process id of the JVM */
+ JMM_OS_MEM_TOTAL_PHYSICAL_BYTES = 202, /* Physical memory size */
+
+ JMM_GC_EXT_ATTRIBUTE_INFO_SIZE = 401 /* the size of the GC specific attributes for a given GC memory manager */
+} jmmLongAttribute;
+
+typedef enum {
+ JMM_VERBOSE_GC = 21,
+ JMM_VERBOSE_CLASS = 22,
+ JMM_THREAD_CONTENTION_MONITORING = 23,
+ JMM_THREAD_CPU_TIME = 24,
+ JMM_THREAD_ALLOCATED_MEMORY = 25
+} jmmBoolAttribute;
+
+
+enum {
+ JMM_THREAD_STATE_FLAG_SUSPENDED = 0x00100000,
+ JMM_THREAD_STATE_FLAG_NATIVE = 0x00400000
+};
+
+#define JMM_THREAD_STATE_FLAG_MASK 0xFFF00000
+
+typedef enum {
+ JMM_STAT_PEAK_THREAD_COUNT = 801,
+ JMM_STAT_THREAD_CONTENTION_COUNT = 802,
+ JMM_STAT_THREAD_CONTENTION_TIME = 803,
+ JMM_STAT_THREAD_CONTENTION_STAT = 804,
+ JMM_STAT_PEAK_POOL_USAGE = 805,
+ JMM_STAT_GC_STAT = 806
+} jmmStatisticType;
+
+typedef enum {
+ JMM_USAGE_THRESHOLD_HIGH = 901,
+ JMM_USAGE_THRESHOLD_LOW = 902,
+ JMM_COLLECTION_USAGE_THRESHOLD_HIGH = 903,
+ JMM_COLLECTION_USAGE_THRESHOLD_LOW = 904
+} jmmThresholdType;
+
+/* Should match what is allowed in globals.hpp */
+typedef enum {
+ JMM_VMGLOBAL_TYPE_UNKNOWN = 0,
+ JMM_VMGLOBAL_TYPE_JBOOLEAN = 1,
+ JMM_VMGLOBAL_TYPE_JSTRING = 2,
+ JMM_VMGLOBAL_TYPE_JLONG = 3,
+ JMM_VMGLOBAL_TYPE_JDOUBLE = 4
+} jmmVMGlobalType;
+
+typedef enum {
+ JMM_VMGLOBAL_ORIGIN_DEFAULT = 1, /* Default value */
+ JMM_VMGLOBAL_ORIGIN_COMMAND_LINE = 2, /* Set at command line (or JNI invocation) */
+ JMM_VMGLOBAL_ORIGIN_MANAGEMENT = 3, /* Set via management interface */
+ JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR = 4, /* Set via environment variables */
+ JMM_VMGLOBAL_ORIGIN_CONFIG_FILE = 5, /* Set via config file (such as .hotspotrc) */
+ JMM_VMGLOBAL_ORIGIN_ERGONOMIC = 6, /* Set via ergonomic */
+ JMM_VMGLOBAL_ORIGIN_ATTACH_ON_DEMAND = 7, /* Set via attach */
+ JMM_VMGLOBAL_ORIGIN_OTHER = 99 /* Set via some other mechanism */
+} jmmVMGlobalOrigin;
+
+typedef struct {
+ jstring name;
+ jvalue value;
+ jmmVMGlobalType type; /* Data type */
+ jmmVMGlobalOrigin origin; /* Default or non-default value */
+ unsigned int writeable : 1; /* dynamically writeable */
+ unsigned int external : 1; /* external supported interface */
+ unsigned int reserved : 30;
+ void *reserved1;
+ void *reserved2;
+} jmmVMGlobal;
+
+typedef struct {
+ const char* name;
+ char type;
+ const char* description;
+} jmmExtAttributeInfo;
+
+/* Caller has to set the following fields before calling GetLastGCStat
+ * o usage_before_gc - array of MemoryUsage objects
+ * o usage_after_gc - array of MemoryUsage objects
+ * o gc_ext_attribute_values_size - size of gc_ext_atttribute_values array
+ * o gc_ext_attribtue_values - array of jvalues
+ */
+typedef struct {
+ jlong gc_index; /* Index of the collections */
+ jlong start_time; /* Start time of the GC */
+ jlong end_time; /* End time of the GC */
+ jobjectArray usage_before_gc; /* Memory usage array before GC */
+ jobjectArray usage_after_gc; /* Memory usage array after GC */
+ jint gc_ext_attribute_values_size; /* set by the caller of GetGCStat */
+ jvalue* gc_ext_attribute_values; /* Array of jvalue for GC extension attributes */
+ jint num_gc_ext_attributes; /* number of GC extension attribute values s are filled */
+ /* -1 indicates gc_ext_attribute_values is not big enough */
+} jmmGCStat;
+
+typedef struct {
+ const char* name; /* Name of the diagnostic command */
+ const char* description; /* Short description */
+ const char* impact; /* Impact on the JVM */
+ const char* permission_class; /* Class name of the required permission if any */
+ const char* permission_name; /* Permission name of the required permission if any */
+ const char* permission_action; /* Action name of the required permission if any*/
+ int num_arguments; /* Number of supported options or arguments */
+ jboolean enabled; /* True if the diagnostic command can be invoked, false otherwise*/
+} dcmdInfo;
+
+typedef struct {
+ const char* name; /* Option/Argument name*/
+ const char* description; /* Short description */
+ const char* type; /* Type: STRING, BOOLEAN, etc. */
+ const char* default_string; /* Default value in a parsable string */
+ jboolean mandatory; /* True if the option/argument is mandatory */
+ jboolean option; /* True if it is an option, false if it is an argument */
+ /* (see diagnosticFramework.hpp for option/argument definitions) */
+ jboolean multiple; /* True is the option can be specified several time */
+ int position; /* Expected position for this argument (this field is */
+ /* meaningless for options) */
+} dcmdArgInfo;
+
+typedef struct jmmInterface_1_ {
+ void* reserved1;
+ void* reserved2;
+
+ jint (JNICALL *GetVersion) (JNIEnv *env);
+
+ jint (JNICALL *GetOptionalSupport) (JNIEnv *env,
+ jmmOptionalSupport* support_ptr);
+
+ jint (JNICALL *GetThreadInfo) (JNIEnv *env,
+ jlongArray ids,
+ jint maxDepth,
+ jobjectArray infoArray);
+
+ jobjectArray (JNICALL *GetMemoryPools) (JNIEnv* env, jobject mgr);
+
+ jobjectArray (JNICALL *GetMemoryManagers) (JNIEnv* env, jobject pool);
+
+ jobject (JNICALL *GetMemoryPoolUsage) (JNIEnv* env, jobject pool);
+ jobject (JNICALL *GetPeakMemoryPoolUsage) (JNIEnv* env, jobject pool);
+
+ void (JNICALL *GetThreadAllocatedMemory)
+ (JNIEnv *env,
+ jlongArray ids,
+ jlongArray sizeArray);
+
+ jobject (JNICALL *GetMemoryUsage) (JNIEnv* env, jboolean heap);
+
+ jlong (JNICALL *GetLongAttribute) (JNIEnv *env, jobject obj, jmmLongAttribute att);
+ jboolean (JNICALL *GetBoolAttribute) (JNIEnv *env, jmmBoolAttribute att);
+ jboolean (JNICALL *SetBoolAttribute) (JNIEnv *env, jmmBoolAttribute att, jboolean flag);
+
+ jint (JNICALL *GetLongAttributes) (JNIEnv *env,
+ jobject obj,
+ jmmLongAttribute* atts,
+ jint count,
+ jlong* result);
+
+ jobjectArray (JNICALL *FindCircularBlockedThreads) (JNIEnv *env);
+
+ // Not used in JDK 6 or JDK 7
+ jlong (JNICALL *GetThreadCpuTime) (JNIEnv *env, jlong thread_id);
+
+ jobjectArray (JNICALL *GetVMGlobalNames) (JNIEnv *env);
+ jint (JNICALL *GetVMGlobals) (JNIEnv *env,
+ jobjectArray names,
+ jmmVMGlobal *globals,
+ jint count);
+
+ jint (JNICALL *GetInternalThreadTimes) (JNIEnv *env,
+ jobjectArray names,
+ jlongArray times);
+
+ jboolean (JNICALL *ResetStatistic) (JNIEnv *env,
+ jvalue obj,
+ jmmStatisticType type);
+
+ void (JNICALL *SetPoolSensor) (JNIEnv *env,
+ jobject pool,
+ jmmThresholdType type,
+ jobject sensor);
+
+ jlong (JNICALL *SetPoolThreshold) (JNIEnv *env,
+ jobject pool,
+ jmmThresholdType type,
+ jlong threshold);
+ jobject (JNICALL *GetPoolCollectionUsage) (JNIEnv* env, jobject pool);
+
+ jint (JNICALL *GetGCExtAttributeInfo) (JNIEnv *env,
+ jobject mgr,
+ jmmExtAttributeInfo *ext_info,
+ jint count);
+ void (JNICALL *GetLastGCStat) (JNIEnv *env,
+ jobject mgr,
+ jmmGCStat *gc_stat);
+
+ jlong (JNICALL *GetThreadCpuTimeWithKind)
+ (JNIEnv *env,
+ jlong thread_id,
+ jboolean user_sys_cpu_time);
+ void (JNICALL *GetThreadCpuTimesWithKind)
+ (JNIEnv *env,
+ jlongArray ids,
+ jlongArray timeArray,
+ jboolean user_sys_cpu_time);
+
+ jint (JNICALL *DumpHeap0) (JNIEnv *env,
+ jstring outputfile,
+ jboolean live);
+ jobjectArray (JNICALL *FindDeadlocks) (JNIEnv *env,
+ jboolean object_monitors_only);
+ void (JNICALL *SetVMGlobal) (JNIEnv *env,
+ jstring flag_name,
+ jvalue new_value);
+ void* reserved6;
+ jobjectArray (JNICALL *DumpThreads) (JNIEnv *env,
+ jlongArray ids,
+ jboolean lockedMonitors,
+ jboolean lockedSynchronizers,
+ jint maxDepth);
+ void (JNICALL *SetGCNotificationEnabled) (JNIEnv *env,
+ jobject mgr,
+ jboolean enabled);
+ jobjectArray (JNICALL *GetDiagnosticCommands) (JNIEnv *env);
+ void (JNICALL *GetDiagnosticCommandInfo)
+ (JNIEnv *env,
+ jobjectArray cmds,
+ dcmdInfo *infoArray);
+ void (JNICALL *GetDiagnosticCommandArgumentsInfo)
+ (JNIEnv *env,
+ jstring commandName,
+ dcmdArgInfo *infoArray);
+ jstring (JNICALL *ExecuteDiagnosticCommand)
+ (JNIEnv *env,
+ jstring command);
+ void (JNICALL *SetDiagnosticFrameworkNotificationEnabled)
+ (JNIEnv *env,
+ jboolean enabled);
+} JmmInterface;
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif /* __cplusplus */
+
+#endif /* !_JAVA_JMM_H_ */
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/include/jvm.h Fri Dec 08 23:43:25 2017 +0100
@@ -0,0 +1,1328 @@
+/*
+ * Copyright (c) 1997, 2017, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 _JAVASOFT_JVM_H_
+#define _JAVASOFT_JVM_H_
+
+#include <sys/stat.h>
+
+#include "jni.h"
+#include "jvm_md.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * This file contains additional functions exported from the VM.
+ * These functions are complementary to the standard JNI support.
+ * There are three parts to this file:
+ *
+ * First, this file contains the VM-related functions needed by native
+ * libraries in the standard Java API. For example, the java.lang.Object
+ * class needs VM-level functions that wait for and notify monitors.
+ *
+ * Second, this file contains the functions and constant definitions
+ * needed by the byte code verifier and class file format checker.
+ * These functions allow the verifier and format checker to be written
+ * in a VM-independent way.
+ *
+ * Third, this file contains various I/O and network operations needed
+ * by the standard Java I/O and network APIs.
+ */
+
+/*
+ * Bump the version number when either of the following happens:
+ *
+ * 1. There is a change in JVM_* functions.
+ *
+ * 2. There is a change in the contract between VM and Java classes.
+ * For example, if the VM relies on a new private field in Thread
+ * class.
+ */
+
+#define JVM_INTERFACE_VERSION 5
+
+JNIEXPORT jint JNICALL
+JVM_GetInterfaceVersion(void);
+
+/*************************************************************************
+ PART 1: Functions for Native Libraries
+ ************************************************************************/
+/*
+ * java.lang.Object
+ */
+JNIEXPORT jint JNICALL
+JVM_IHashCode(JNIEnv *env, jobject obj);
+
+JNIEXPORT void JNICALL
+JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
+
+JNIEXPORT void JNICALL
+JVM_MonitorNotify(JNIEnv *env, jobject obj);
+
+JNIEXPORT void JNICALL
+JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
+
+JNIEXPORT jobject JNICALL
+JVM_Clone(JNIEnv *env, jobject obj);
+
+/*
+ * java.lang.String
+ */
+JNIEXPORT jstring JNICALL
+JVM_InternString(JNIEnv *env, jstring str);
+
+/*
+ * java.lang.System
+ */
+JNIEXPORT jlong JNICALL
+JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
+
+JNIEXPORT jlong JNICALL
+JVM_NanoTime(JNIEnv *env, jclass ignored);
+
+JNIEXPORT jlong JNICALL
+JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs);
+
+JNIEXPORT void JNICALL
+JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
+ jobject dst, jint dst_pos, jint length);
+
+JNIEXPORT jobject JNICALL
+JVM_InitProperties(JNIEnv *env, jobject p);
+
+
+/*
+ * java.lang.Runtime
+ */
+JNIEXPORT void JNICALL
+JVM_Halt(jint code);
+
+JNIEXPORT void JNICALL
+JVM_GC(void);
+
+/* Returns the number of real-time milliseconds that have elapsed since the
+ * least-recently-inspected heap object was last inspected by the garbage
+ * collector.
+ *
+ * For simple stop-the-world collectors this value is just the time
+ * since the most recent collection. For generational collectors it is the
+ * time since the oldest generation was most recently collected. Other
+ * collectors are free to return a pessimistic estimate of the elapsed time, or
+ * simply the time since the last full collection was performed.
+ *
+ * Note that in the presence of reference objects, a given object that is no
+ * longer strongly reachable may have to be inspected multiple times before it
+ * can be reclaimed.
+ */
+JNIEXPORT jlong JNICALL
+JVM_MaxObjectInspectionAge(void);
+
+JNIEXPORT jlong JNICALL
+JVM_TotalMemory(void);
+
+JNIEXPORT jlong JNICALL
+JVM_FreeMemory(void);
+
+JNIEXPORT jlong JNICALL
+JVM_MaxMemory(void);
+
+JNIEXPORT jint JNICALL
+JVM_ActiveProcessorCount(void);
+
+JNIEXPORT void * JNICALL
+JVM_LoadLibrary(const char *name);
+
+JNIEXPORT void JNICALL
+JVM_UnloadLibrary(void * handle);
+
+JNIEXPORT void * JNICALL
+JVM_FindLibraryEntry(void *handle, const char *name);
+
+JNIEXPORT jboolean JNICALL
+JVM_IsSupportedJNIVersion(jint version);
+
+JNIEXPORT jobjectArray JNICALL
+JVM_GetVmArguments(JNIEnv *env);
+
+
+/*
+ * java.lang.Throwable
+ */
+JNIEXPORT void JNICALL
+JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
+
+/*
+ * java.lang.StackTraceElement
+ */
+JNIEXPORT void JNICALL
+JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
+
+JNIEXPORT void JNICALL
+JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
+
+/*
+ * java.lang.StackWalker
+ */
+enum {
+ JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2,
+ JVM_STACKWALK_GET_CALLER_CLASS = 0x04,
+ JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
+ JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
+};
+
+JNIEXPORT jobject JNICALL
+JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
+ jint skip_frames, jint frame_count, jint start_index,
+ jobjectArray frames);
+
+JNIEXPORT jint JNICALL
+JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
+ jint frame_count, jint start_index,
+ jobjectArray frames);
+
+/*
+ * java.lang.Thread
+ */
+JNIEXPORT void JNICALL
+JVM_StartThread(JNIEnv *env, jobject thread);
+
+JNIEXPORT void JNICALL
+JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
+
+JNIEXPORT jboolean JNICALL
+JVM_IsThreadAlive(JNIEnv *env, jobject thread);
+
+JNIEXPORT void JNICALL
+JVM_SuspendThread(JNIEnv *env, jobject thread);
+
+JNIEXPORT void JNICALL
+JVM_ResumeThread(JNIEnv *env, jobject thread);
+
+JNIEXPORT void JNICALL
+JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
+
+JNIEXPORT void JNICALL
+JVM_Yield(JNIEnv *env, jclass threadClass);
+
+JNIEXPORT void JNICALL
+JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
+
+JNIEXPORT jobject JNICALL
+JVM_CurrentThread(JNIEnv *env, jclass threadClass);
+
+JNIEXPORT jint JNICALL
+JVM_CountStackFrames(JNIEnv *env, jobject thread);
+
+JNIEXPORT void JNICALL
+JVM_Interrupt(JNIEnv *env, jobject thread);
+
+JNIEXPORT jboolean JNICALL
+JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
+
+JNIEXPORT jboolean JNICALL
+JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
+
+JNIEXPORT void JNICALL
+JVM_DumpAllStacks(JNIEnv *env, jclass unused);
+
+JNIEXPORT jobjectArray JNICALL
+JVM_GetAllThreads(JNIEnv *env, jclass dummy);
+
+JNIEXPORT void JNICALL
+JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
+
+/* getStackTrace() and getAllStackTraces() method */
+JNIEXPORT jobjectArray JNICALL
+JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
+
+/*
+ * java.lang.SecurityManager
+ */
+JNIEXPORT jobjectArray JNICALL
+JVM_GetClassContext(JNIEnv *env);
+
+/*
+ * java.lang.Package
+ */
+JNIEXPORT jstring JNICALL
+JVM_GetSystemPackage(JNIEnv *env, jstring name);
+
+JNIEXPORT jobjectArray JNICALL
+JVM_GetSystemPackages(JNIEnv *env);
+
+/*
+ * java.lang.ref.Reference
+ */
+JNIEXPORT jobject JNICALL
+JVM_GetAndClearReferencePendingList(JNIEnv *env);
+
+JNIEXPORT jboolean JNICALL
+JVM_HasReferencePendingList(JNIEnv *env);
+
+JNIEXPORT void JNICALL
+JVM_WaitForReferencePendingList(JNIEnv *env);
+
+/*
+ * java.io.ObjectInputStream
+ */
+JNIEXPORT jobject JNICALL
+JVM_LatestUserDefinedLoader(JNIEnv *env);
+
+/*
+ * java.lang.reflect.Array
+ */
+JNIEXPORT jint JNICALL
+JVM_GetArrayLength(JNIEnv *env, jobject arr);
+
+JNIEXPORT jobject JNICALL
+JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
+
+JNIEXPORT jvalue JNICALL
+JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
+
+JNIEXPORT void JNICALL
+JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
+
+JNIEXPORT void JNICALL
+JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
+ unsigned char vCode);
+
+JNIEXPORT jobject JNICALL
+JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
+
+JNIEXPORT jobject JNICALL
+JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
+
+/*
+ * java.lang.Class and java.lang.ClassLoader
+ */
+
+#define JVM_CALLER_DEPTH -1
+
+/*
+ * Returns the immediate caller class of the native method invoking
+ * JVM_GetCallerClass. The Method.invoke and other frames due to
+ * reflection machinery are skipped.
+ *
+ * The depth parameter must be -1 (JVM_DEPTH). The caller is expected
+ * to be marked with sun.reflect.CallerSensitive. The JVM will throw
+ * an error if it is not marked propertly.
+ */
+JNIEXPORT jclass JNICALL
+JVM_GetCallerClass(JNIEnv *env, int depth);
+
+
+/*
+ * Find primitive classes
+ * utf: class name
+ */
+JNIEXPORT jclass JNICALL
+JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
+
+
+/*
+ * Find a class from a boot class loader. Returns NULL if class not found.
+ */
+JNIEXPORT jclass JNICALL
+JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
+
+/*
+ * Find a class from a given class loader. Throws ClassNotFoundException.
+ * name: name of class
+ * init: whether initialization is done
+ * loader: class loader to look up the class. This may not be the same as the caller's
+ * class loader.
+ * caller: initiating class. The initiating class may be null when a security
+ * manager is not installed.
+ */
+JNIEXPORT jclass JNICALL
+JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
+ jobject loader, jclass caller);
+
+/*
+ * Find a class from a given class.
+ */
+JNIEXPORT jclass JNICALL
+JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
+ jclass from);
+
+/* Find a loaded class cached by the VM */
+JNIEXPORT jclass JNICALL
+JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
+
+/* Define a class */
+JNIEXPORT jclass JNICALL
+JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
+ jsize len, jobject pd);
+
+/* Define a class with a source (added in JDK1.5) */
+JNIEXPORT jclass JNICALL
+JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
+ const jbyte *buf, jsize len, jobject pd,
+ const char *source);
+
+/*
+ * Module support funcions
+ */
+
+/*
+ * Define a module with the specified packages and bind the module to the
+ * given class loader.
+ * module: module to define
+ * is_open: specifies if module is open (currently ignored)
+ * version: the module version
+ * location: the module location
+ * packages: list of packages in the module
+ * num_packages: number of packages in the module
+ */
+JNIEXPORT void JNICALL
+JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
+ jstring location, const char* const* packages, jsize num_packages);
+
+/*
+ * Set the boot loader's unnamed module.
+ * module: boot loader's unnamed module
+ */
+JNIEXPORT void JNICALL
+JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
+
+/*
+ * Do a qualified export of a package.
+ * from_module: module containing the package to export
+ * package: name of the package to export
+ * to_module: module to export the package to
+ */
+JNIEXPORT void JNICALL
+JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module);
+
+/*
+ * Do an export of a package to all unnamed modules.
+ * from_module: module containing the package to export
+ * package: name of the package to export to all unnamed modules
+ */
+JNIEXPORT void JNICALL
+JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package);
+
+/*
+ * Do an unqualified export of a package.
+ * from_module: module containing the package to export
+ * package: name of the package to export
+ */
+JNIEXPORT void JNICALL
+JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package);
+
+/*
+ * Add a module to the list of modules that a given module can read.
+ * from_module: module requesting read access
+ * source_module: module that from_module wants to read
+ */
+JNIEXPORT void JNICALL
+JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
+
+/*
+ * Reflection support functions
+ */
+
+JNIEXPORT jstring JNICALL
+JVM_GetClassName(JNIEnv *env, jclass cls);
+
+JNIEXPORT jobjectArray JNICALL
+JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
+
+JNIEXPORT jboolean JNICALL
+JVM_IsInterface(JNIEnv *env, jclass cls);
+
+JNIEXPORT jobjectArray JNICALL
+JVM_GetClassSigners(JNIEnv *env, jclass cls);
+
+JNIEXPORT void JNICALL
+JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
+
+JNIEXPORT jobject JNICALL
+JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
+
+JNIEXPORT jboolean JNICALL
+JVM_IsArrayClass(JNIEnv *env, jclass cls);
+
+JNIEXPORT jboolean JNICALL
+JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
+
+JNIEXPORT jint JNICALL
+JVM_GetClassModifiers(JNIEnv *env, jclass cls);
+
+JNIEXPORT jobjectArray JNICALL
+JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
+
+JNIEXPORT jclass JNICALL
+JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
+
+JNIEXPORT jstring JNICALL
+JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
+
+/* Generics support (JDK 1.5) */
+JNIEXPORT jstring JNICALL
+JVM_GetClassSignature(JNIEnv *env, jclass cls);
+
+/* Annotations support (JDK 1.5) */
+JNIEXPORT jbyteArray JNICALL
+JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
+
+/* Type use annotations support (JDK 1.8) */
+
+JNIEXPORT jbyteArray JNICALL
+JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
+
+JNIEXPORT jbyteArray JNICALL
+JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
+
+JNIEXPORT jbyteArray JNICALL
+JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
+
+/*
+ * New (JDK 1.4) reflection implementation
+ */
+
+JNIEXPORT jobjectArray JNICALL
+JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
+
+JNIEXPORT jobjectArray JNICALL
+JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
+
+JNIEXPORT jobjectArray JNICALL
+JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
+
+/* Differs from JVM_GetClassModifiers in treatment of inner classes.
+ This returns the access flags for the class as specified in the
+ class file rather than searching the InnerClasses attribute (if
+ present) to find the source-level access flags. Only the values of
+ the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
+ valid. */
+JNIEXPORT jint JNICALL
+JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
+
+/* The following two reflection routines are still needed due to startup time issues */
+/*
+ * java.lang.reflect.Method
+ */
+JNIEXPORT jobject JNICALL
+JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
+
+/*
+ * java.lang.reflect.Constructor
+ */
+JNIEXPORT jobject JNICALL
+JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
+
+/*
+ * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
+ */
+
+JNIEXPORT jobject JNICALL
+JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
+
+JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
+(JNIEnv *env, jobject unused, jobject jcpool);
+
+JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
+(JNIEnv *env, jobject obj, jobject unused, jint index);
+
+JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
+(JNIEnv *env, jobject obj, jobject unused, jint index);
+
+JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
+(JNIEnv *env, jobject obj, jobject unused, jint index);
+
+JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
+(JNIEnv *env, jobject unused, jobject jcpool, jint index);
+
+/*
+ * Parameter reflection
+ */
+
+JNIEXPORT jobjectArray JNICALL
+JVM_GetMethodParameters(JNIEnv *env, jobject method);
+
+/*
+ * java.security.*
+ */
+
+JNIEXPORT jobject JNICALL
+JVM_DoPrivileged(JNIEnv *env, jclass cls,
+ jobject action, jobject context, jboolean wrapException);
+
+JNIEXPORT jobject JNICALL
+JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
+
+JNIEXPORT jobject JNICALL
+JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
+
+/*
+ * Signal support, used to implement the shutdown sequence. Every VM must
+ * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
+ * (^C) and the latter for external termination (kill, system shutdown, etc.).
+ * Other platform-dependent signal values may also be supported.
+ */
+
+JNIEXPORT void * JNICALL
+JVM_RegisterSignal(jint sig, void *handler);
+
+JNIEXPORT jboolean JNICALL
+JVM_RaiseSignal(jint sig);
+
+JNIEXPORT jint JNICALL
+JVM_FindSignal(const char *name);
+
+/*
+ * Retrieve the assertion directives for the specified class.
+ */
+JNIEXPORT jboolean JNICALL
+JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
+
+/*
+ * Retrieve the assertion directives from the VM.
+ */
+JNIEXPORT jobject JNICALL
+JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
+
+/*
+ * java.util.concurrent.atomic.AtomicLong
+ */
+JNIEXPORT jboolean JNICALL
+JVM_SupportsCX8(void);
+
+/*
+ * com.sun.dtrace.jsdt support
+ */
+
+#define JVM_TRACING_DTRACE_VERSION 1
+
+/*
+ * Structure to pass one probe description to JVM
+ */
+typedef struct {
+ jmethodID method;
+ jstring function;
+ jstring name;
+ void* reserved[4]; // for future use
+} JVM_DTraceProbe;
+
+/**
+ * Encapsulates the stability ratings for a DTrace provider field
+ */
+typedef struct {
+ jint nameStability;
+ jint dataStability;
+ jint dependencyClass;
+} JVM_DTraceInterfaceAttributes;
+
+/*
+ * Structure to pass one provider description to JVM
+ */
+typedef struct {
+ jstring name;
+ JVM_DTraceProbe* probes;
+ jint probe_count;
+ JVM_DTraceInterfaceAttributes providerAttributes;
+ JVM_DTraceInterfaceAttributes moduleAttributes;
+ JVM_DTraceInterfaceAttributes functionAttributes;
+ JVM_DTraceInterfaceAttributes nameAttributes;
+ JVM_DTraceInterfaceAttributes argsAttributes;
+ void* reserved[4]; // for future use
+} JVM_DTraceProvider;
+
+/*
+ * Get the version number the JVM was built with
+ */
+JNIEXPORT jint JNICALL
+JVM_DTraceGetVersion(JNIEnv* env);
+
+/*
+ * Register new probe with given signature, return global handle
+ *
+ * The version passed in is the version that the library code was
+ * built with.
+ */
+JNIEXPORT jlong JNICALL
+JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
+ jint providers_count, JVM_DTraceProvider* providers);
+
+/*
+ * Check JSDT probe
+ */
+JNIEXPORT jboolean JNICALL
+JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
+
+/*
+ * Destroy custom DOF
+ */
+JNIEXPORT void JNICALL
+JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
+
+/*
+ * Check to see if DTrace is supported by OS
+ */
+JNIEXPORT jboolean JNICALL
+JVM_DTraceIsSupported(JNIEnv* env);
+
+/*************************************************************************
+ PART 2: Support for the Verifier and Class File Format Checker
+ ************************************************************************/
+/*
+ * Return the class name in UTF format. The result is valid
+ * until JVM_ReleaseUTf is called.
+ *
+ * The caller must treat the string as a constant and not modify it
+ * in any way.
+ */
+JNIEXPORT const char * JNICALL
+JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
+
+/*
+ * Returns the constant pool types in the buffer provided by "types."
+ */
+JNIEXPORT void JNICALL
+JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
+
+/*
+ * Returns the number of Constant Pool entries.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
+
+/*
+ * Returns the number of *declared* fields or methods.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
+
+JNIEXPORT jint JNICALL
+JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
+
+/*
+ * Returns the CP indexes of exceptions raised by a given method.
+ * Places the result in the given buffer.
+ *
+ * The method is identified by method_index.
+ */
+JNIEXPORT void JNICALL
+JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
+ unsigned short *exceptions);
+/*
+ * Returns the number of exceptions raised by a given method.
+ * The method is identified by method_index.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
+
+/*
+ * Returns the byte code sequence of a given method.
+ * Places the result in the given buffer.
+ *
+ * The method is identified by method_index.
+ */
+JNIEXPORT void JNICALL
+JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
+ unsigned char *code);
+
+/*
+ * Returns the length of the byte code sequence of a given method.
+ * The method is identified by method_index.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
+
+/*
+ * A structure used to a capture exception table entry in a Java method.
+ */
+typedef struct {
+ jint start_pc;
+ jint end_pc;
+ jint handler_pc;
+ jint catchType;
+} JVM_ExceptionTableEntryType;
+
+/*
+ * Returns the exception table entry at entry_index of a given method.
+ * Places the result in the given buffer.
+ *
+ * The method is identified by method_index.
+ */
+JNIEXPORT void JNICALL
+JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
+ jint entry_index,
+ JVM_ExceptionTableEntryType *entry);
+
+/*
+ * Returns the length of the exception table of a given method.
+ * The method is identified by method_index.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
+
+/*
+ * Returns the modifiers of a given field.
+ * The field is identified by field_index.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
+
+/*
+ * Returns the modifiers of a given method.
+ * The method is identified by method_index.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
+
+/*
+ * Returns the number of local variables of a given method.
+ * The method is identified by method_index.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
+
+/*
+ * Returns the number of arguments (including this pointer) of a given method.
+ * The method is identified by method_index.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
+
+/*
+ * Returns the maximum amount of stack (in words) used by a given method.
+ * The method is identified by method_index.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
+
+/*
+ * Is a given method a constructor.
+ * The method is identified by method_index.
+ */
+JNIEXPORT jboolean JNICALL
+JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
+
+/*
+ * Is the given method generated by the VM.
+ * The method is identified by method_index.
+ */
+JNIEXPORT jboolean JNICALL
+JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
+
+/*
+ * Returns the name of a given method in UTF format.
+ * The result remains valid until JVM_ReleaseUTF is called.
+ *
+ * The caller must treat the string as a constant and not modify it
+ * in any way.
+ */
+JNIEXPORT const char * JNICALL
+JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
+
+/*
+ * Returns the signature of a given method in UTF format.
+ * The result remains valid until JVM_ReleaseUTF is called.
+ *
+ * The caller must treat the string as a constant and not modify it
+ * in any way.
+ */
+JNIEXPORT const char * JNICALL
+JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
+
+/*
+ * Returns the name of the field referred to at a given constant pool
+ * index.
+ *
+ * The result is in UTF format and remains valid until JVM_ReleaseUTF
+ * is called.
+ *
+ * The caller must treat the string as a constant and not modify it
+ * in any way.
+ */
+JNIEXPORT const char * JNICALL
+JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
+
+/*
+ * Returns the name of the method referred to at a given constant pool
+ * index.
+ *
+ * The result is in UTF format and remains valid until JVM_ReleaseUTF
+ * is called.
+ *
+ * The caller must treat the string as a constant and not modify it
+ * in any way.
+ */
+JNIEXPORT const char * JNICALL
+JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
+
+/*
+ * Returns the signature of the method referred to at a given constant pool
+ * index.
+ *
+ * The result is in UTF format and remains valid until JVM_ReleaseUTF
+ * is called.
+ *
+ * The caller must treat the string as a constant and not modify it
+ * in any way.
+ */
+JNIEXPORT const char * JNICALL
+JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
+
+/*
+ * Returns the signature of the field referred to at a given constant pool
+ * index.
+ *
+ * The result is in UTF format and remains valid until JVM_ReleaseUTF
+ * is called.
+ *
+ * The caller must treat the string as a constant and not modify it
+ * in any way.
+ */
+JNIEXPORT const char * JNICALL
+JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
+
+/*
+ * Returns the class name referred to at a given constant pool index.
+ *
+ * The result is in UTF format and remains valid until JVM_ReleaseUTF
+ * is called.
+ *
+ * The caller must treat the string as a constant and not modify it
+ * in any way.
+ */
+JNIEXPORT const char * JNICALL
+JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
+
+/*
+ * Returns the class name referred to at a given constant pool index.
+ *
+ * The constant pool entry must refer to a CONSTANT_Fieldref.
+ *
+ * The result is in UTF format and remains valid until JVM_ReleaseUTF
+ * is called.
+ *
+ * The caller must treat the string as a constant and not modify it
+ * in any way.
+ */
+JNIEXPORT const char * JNICALL
+JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
+
+/*
+ * Returns the class name referred to at a given constant pool index.
+ *
+ * The constant pool entry must refer to CONSTANT_Methodref or
+ * CONSTANT_InterfaceMethodref.
+ *
+ * The result is in UTF format and remains valid until JVM_ReleaseUTF
+ * is called.
+ *
+ * The caller must treat the string as a constant and not modify it
+ * in any way.
+ */
+JNIEXPORT const char * JNICALL
+JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
+
+/*
+ * Returns the modifiers of a field in calledClass. The field is
+ * referred to in class cb at constant pool entry index.
+ *
+ * The caller must treat the string as a constant and not modify it
+ * in any way.
+ *
+ * Returns -1 if the field does not exist in calledClass.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
+
+/*
+ * Returns the modifiers of a method in calledClass. The method is
+ * referred to in class cb at constant pool entry index.
+ *
+ * Returns -1 if the method does not exist in calledClass.
+ */
+JNIEXPORT jint JNICALL
+JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
+
+/*
+ * Releases the UTF string obtained from the VM.
+ */
+JNIEXPORT void JNICALL
+JVM_ReleaseUTF(const char *utf);
+
+/*
+ * Compare if two classes are in the same package.
+ */
+JNIEXPORT jboolean JNICALL
+JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
+
+/* Get classfile constants */
+#include "classfile_constants.h"
+
+/*
+ * A function defined by the byte-code verifier and called by the VM.
+ * This is not a function implemented in the VM.
+ *
+ * Returns JNI_FALSE if verification fails. A detailed error message
+ * will be places in msg_buf, whose length is specified by buf_len.
+ */
+typedef jboolean (*verifier_fn_t)(JNIEnv *env,
+ jclass cb,
+ char * msg_buf,
+ jint buf_len);
+
+
+/*
+ * Support for a VM-independent class format checker.
+ */
+typedef struct {
+ unsigned long code; /* byte code */
+ unsigned long excs; /* exceptions */
+ unsigned long etab; /* catch table */
+ unsigned long lnum; /* line number */
+ unsigned long lvar; /* local vars */
+} method_size_info;
+
+typedef struct {
+ unsigned int constants; /* constant pool */
+ unsigned int fields;
+ unsigned int methods;
+ unsigned int interfaces;
+ unsigned int fields2; /* number of static 2-word fields */
+ unsigned int innerclasses; /* # of records in InnerClasses attr */
+
+ method_size_info clinit; /* memory used in clinit */
+ method_size_info main; /* used everywhere else */
+} class_size_info;
+
+/*
+ * Functions defined in libjava.so to perform string conversions.
+ *
+ */
+
+typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
+
+typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
+
+/* This is the function defined in libjava.so that performs class
+ * format checks. This functions fills in size information about
+ * the class file and returns:
+ *
+ * 0: good
+ * -1: out of memory
+ * -2: bad format
+ * -3: unsupported version
+ * -4: bad class name
+ */
+
+typedef jint (*check_format_fn_t)(char *class_name,
+ unsigned char *data,
+ unsigned int data_size,
+ class_size_info *class_size,
+ char *message_buffer,
+ jint buffer_length,
+ jboolean measure_only,
+ jboolean check_relaxed);
+
+#define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
+ JVM_ACC_FINAL | \
+ JVM_ACC_SUPER | \
+ JVM_ACC_INTERFACE | \
+ JVM_ACC_ABSTRACT | \
+ JVM_ACC_ANNOTATION | \
+ JVM_ACC_ENUM | \
+ JVM_ACC_SYNTHETIC)
+
+#define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
+ JVM_ACC_PRIVATE | \
+ JVM_ACC_PROTECTED | \
+ JVM_ACC_STATIC | \
+ JVM_ACC_FINAL | \
+ JVM_ACC_VOLATILE | \
+ JVM_ACC_TRANSIENT | \
+ JVM_ACC_ENUM | \
+ JVM_ACC_SYNTHETIC)
+
+#define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
+ JVM_ACC_PRIVATE | \
+ JVM_ACC_PROTECTED | \
+ JVM_ACC_STATIC | \
+ JVM_ACC_FINAL | \
+ JVM_ACC_SYNCHRONIZED | \
+ JVM_ACC_BRIDGE | \
+ JVM_ACC_VARARGS | \
+ JVM_ACC_NATIVE | \
+ JVM_ACC_ABSTRACT | \
+ JVM_ACC_STRICT | \
+ JVM_ACC_SYNTHETIC)
+
+/*
+ * This is the function defined in libjava.so to perform path
+ * canonicalization. VM call this function before opening jar files
+ * to load system classes.
+ *
+ */
+
+typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
+
+/*************************************************************************
+ PART 3: I/O and Network Support
+ ************************************************************************/
+
+/*
+ * Convert a pathname into native format. This function does syntactic
+ * cleanup, such as removing redundant separator characters. It modifies
+ * the given pathname string in place.
+ */
+JNIEXPORT char * JNICALL
+JVM_NativePath(char *);
+
+/*
+ * The standard printing functions supported by the Java VM. (Should they
+ * be renamed to JVM_* in the future?
+ */
+
+/* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
+ * respectively, with the following differences:
+ * - The string written to str is always zero-terminated, also in case of
+ * truncation (count is too small to hold the result string), unless count
+ * is 0. In case of truncation count-1 characters are written and '\0'
+ * appendend.
+ * - If count is too small to hold the whole string, -1 is returned across
+ * all platforms. */
+
+JNIEXPORT int
+jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
+
+JNIEXPORT int
+jio_snprintf(char *str, size_t count, const char *fmt, ...);
+
+JNIEXPORT int
+jio_fprintf(FILE *, const char *fmt, ...);
+
+JNIEXPORT int
+jio_vfprintf(FILE *, const char *fmt, va_list args);
+
+
+JNIEXPORT void * JNICALL
+JVM_RawMonitorCreate(void);
+
+JNIEXPORT void JNICALL
+JVM_RawMonitorDestroy(void *mon);
+
+JNIEXPORT jint JNICALL
+JVM_RawMonitorEnter(void *mon);
+
+JNIEXPORT void JNICALL
+JVM_RawMonitorExit(void *mon);
+
+/*
+ * java.lang.management support
+ */
+JNIEXPORT void* JNICALL
+JVM_GetManagement(jint version);
+
+/*
+ * com.sun.tools.attach.VirtualMachine support
+ *
+ * Initialize the agent properties with the properties maintained in the VM.
+ */
+JNIEXPORT jobject JNICALL
+JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
+
+JNIEXPORT jstring JNICALL
+JVM_GetTemporaryDirectory(JNIEnv *env);
+
+/* Generics reflection support.
+ *
+ * Returns information about the given class's EnclosingMethod
+ * attribute, if present, or null if the class had no enclosing
+ * method.
+ *
+ * If non-null, the returned array contains three elements. Element 0
+ * is the java.lang.Class of which the enclosing method is a member,
+ * and elements 1 and 2 are the java.lang.Strings for the enclosing
+ * method's name and descriptor, respectively.
+ */
+JNIEXPORT jobjectArray JNICALL
+JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
+
+/* =========================================================================
+ * The following defines a private JVM interface that the JDK can query
+ * for the JVM version and capabilities. sun.misc.Version defines
+ * the methods for getting the VM version and its capabilities.
+ *
+ * When a new bit is added, the following should be updated to provide
+ * access to the new capability:
+ * HS: JVM_GetVersionInfo and Abstract_VM_Version class
+ * SDK: Version class
+ *
+ * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
+ * JVM to query for the JDK version and capabilities.
+ *
+ * When a new bit is added, the following should be updated to provide
+ * access to the new capability:
+ * HS: JDK_Version class
+ * SDK: JDK_GetVersionInfo0
+ *
+ * ==========================================================================
+ */
+typedef struct {
+ unsigned int jvm_version; /* Encoded $VNUM as specified by JEP-223 */
+ unsigned int patch_version : 8; /* JEP-223 patch version */
+ unsigned int reserved3 : 8;
+ unsigned int reserved1 : 16;
+ unsigned int reserved2;
+
+ /* The following bits represents JVM supports that JDK has dependency on.
+ * JDK can use these bits to determine which JVM version
+ * and support it has to maintain runtime compatibility.
+ *
+ * When a new bit is added in a minor or update release, make sure
+ * the new bit is also added in the main/baseline.
+ */
+ unsigned int is_attach_supported : 1;
+ unsigned int : 31;
+ unsigned int : 32;
+ unsigned int : 32;
+} jvm_version_info;
+
+#define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
+#define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
+#define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
+#define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
+
+JNIEXPORT void JNICALL
+JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
+
+typedef struct {
+ unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */
+ unsigned int patch_version : 8; /* JEP-223 patch version */
+ unsigned int reserved3 : 8;
+ unsigned int reserved1 : 16;
+ unsigned int reserved2;
+
+ /* The following bits represents new JDK supports that VM has dependency on.
+ * VM implementation can use these bits to determine which JDK version
+ * and support it has to maintain runtime compatibility.
+ *
+ * When a new bit is added in a minor or update release, make sure
+ * the new bit is also added in the main/baseline.
+ */
+ unsigned int thread_park_blocker : 1;
+ unsigned int post_vm_init_hook_enabled : 1;
+ unsigned int pending_list_uses_discovered_field : 1;
+ unsigned int : 29;
+ unsigned int : 32;
+ unsigned int : 32;
+} jdk_version_info;
+
+#define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
+#define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
+#define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
+#define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
+
+/*
+ * This is the function JDK_GetVersionInfo0 defined in libjava.so
+ * that is dynamically looked up by JVM.
+ */
+typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
+
+/*
+ * This structure is used by the launcher to get the default thread
+ * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
+ * version of 1.1. As it is not supported otherwise, it has been removed
+ * from jni.h
+ */
+typedef struct JDK1_1InitArgs {
+ jint version;
+
+ char **properties;
+ jint checkSource;
+ jint nativeStackSize;
+ jint javaStackSize;
+ jint minHeapSize;
+ jint maxHeapSize;
+ jint verifyMode;
+ char *classpath;
+
+ jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
+ void (JNICALL *exit)(jint code);
+ void (JNICALL *abort)(void);
+
+ jint enableClassGC;
+ jint enableVerboseGC;
+ jint disableAsyncGC;
+ jint verbose;
+ jboolean debugging;
+ jint debugPort;
+} JDK1_1InitArgs;
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+
+#endif /* __cplusplus */
+
+#endif /* !_JAVASOFT_JVM_H_ */
--- a/src/hotspot/share/jvmci/jvmciEnv.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/jvmci/jvmciEnv.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -410,8 +410,8 @@
// ------------------------------------------------------------------
// Check for changes to the system dictionary during compilation
// class loads, evolution, breakpoints
-JVMCIEnv::CodeInstallResult JVMCIEnv::check_for_system_dictionary_modification(Dependencies* dependencies, Handle compiled_code,
- JVMCIEnv* env, char** failure_detail) {
+JVMCIEnv::CodeInstallResult JVMCIEnv::validate_compile_task_dependencies(Dependencies* dependencies, Handle compiled_code,
+ JVMCIEnv* env, char** failure_detail) {
// If JVMTI capabilities were enabled during compile, the compilation is invalidated.
if (env != NULL) {
if (!env->_jvmti_can_hotswap_or_post_breakpoint && JvmtiExport::can_hotswap_or_post_breakpoint()) {
@@ -422,37 +422,20 @@
// Dependencies must be checked when the system dictionary changes
// or if we don't know whether it has changed (i.e., env == NULL).
- // In debug mode, always check dependencies.
- bool counter_changed = env != NULL && env->_system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
- bool verify_deps = env == NULL || trueInDebug || JavaAssertions::enabled(SystemDictionary::HotSpotInstalledCode_klass()->name()->as_C_string(), true);
- if (!counter_changed && !verify_deps) {
+ bool counter_changed = env == NULL || env->_system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
+ CompileTask* task = env == NULL ? NULL : env->task();
+ Dependencies::DepType result = dependencies->validate_dependencies(task, counter_changed, failure_detail);
+ if (result == Dependencies::end_marker) {
return JVMCIEnv::ok;
}
- for (Dependencies::DepStream deps(dependencies); deps.next(); ) {
- Klass* witness = deps.check_dependency();
- if (witness != NULL) {
- // Use a fixed size buffer to prevent the string stream from
- // resizing in the context of an inner resource mark.
- char* buffer = NEW_RESOURCE_ARRAY(char, O_BUFLEN);
- stringStream st(buffer, O_BUFLEN);
- deps.print_dependency(witness, true, &st);
- *failure_detail = st.as_string();
- if (env == NULL || counter_changed || deps.type() == Dependencies::evol_method) {
- return JVMCIEnv::dependencies_failed;
- } else {
- // The dependencies were invalid at the time of installation
- // without any intervening modification of the system
- // dictionary. That means they were invalidly constructed.
- return JVMCIEnv::dependencies_invalid;
- }
- }
- if (LogCompilation) {
- deps.log_dependency();
- }
+ if (!Dependencies::is_klass_type(result) || counter_changed) {
+ return JVMCIEnv::dependencies_failed;
}
-
- return JVMCIEnv::ok;
+ // The dependencies were invalid at the time of installation
+ // without any intervening modification of the system
+ // dictionary. That means they were invalidly constructed.
+ return JVMCIEnv::dependencies_invalid;
}
// ------------------------------------------------------------------
@@ -492,8 +475,15 @@
// Encode the dependencies now, so we can check them right away.
dependencies->encode_content_bytes();
+ // Record the dependencies for the current compile in the log
+ if (LogCompilation) {
+ for (Dependencies::DepStream deps(dependencies); deps.next(); ) {
+ deps.log_dependency();
+ }
+ }
+
// Check for {class loads, evolution, breakpoints} during compilation
- result = check_for_system_dictionary_modification(dependencies, compiled_code, env, &failure_detail);
+ result = validate_compile_task_dependencies(dependencies, compiled_code, env, &failure_detail);
if (result != JVMCIEnv::ok) {
// While not a true deoptimization, it is a preemptive decompile.
MethodData* mdp = method()->method_data();
--- a/src/hotspot/share/jvmci/jvmciEnv.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/jvmci/jvmciEnv.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -138,8 +138,8 @@
// Helper routine for determining the validity of a compilation
// with respect to concurrent class loading.
- static JVMCIEnv::CodeInstallResult check_for_system_dictionary_modification(Dependencies* target, Handle compiled_code,
- JVMCIEnv* env, char** failure_detail);
+ static JVMCIEnv::CodeInstallResult validate_compile_task_dependencies(Dependencies* target, Handle compiled_code,
+ JVMCIEnv* env, char** failure_detail);
public:
CompileTask* task() { return _task; }
--- a/src/hotspot/share/opto/c2_globals.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/opto/c2_globals.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -195,6 +195,9 @@
product(bool, UseSubwordForMaxVector, true, \
"Use Subword Analysis to set maximum vector size") \
\
+ product(bool, UseVectorCmov, false, \
+ "Use Vectorized Cmov") \
+ \
develop(intx, UnrollLimitForProfileCheck, 1, \
"Don't use profile_trip_cnt() to restrict unrolling until " \
"unrolling would push the number of unrolled iterations above " \
--- a/src/hotspot/share/opto/classes.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/opto/classes.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -66,6 +66,7 @@
macro(CMoveD)
macro(CMoveVD)
macro(CMoveF)
+macro(CMoveVF)
macro(CMoveI)
macro(CMoveL)
macro(CMoveP)
--- a/src/hotspot/share/opto/loopopts.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/opto/loopopts.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -528,13 +528,12 @@
BasicType bt = phi->type()->basic_type();
switch (bt) {
case T_DOUBLE:
+ case T_FLOAT:
if (C->use_cmove()) {
continue; //TODO: maybe we want to add some cost
}
- case T_FLOAT: {
cost += Matcher::float_cmove_cost(); // Could be very expensive
break;
- }
case T_LONG: {
cost += Matcher::long_cmove_cost(); // May encodes as 2 CMOV's
}
@@ -613,8 +612,9 @@
}
// Check for highly predictable branch. No point in CMOV'ing if
// we are going to predict accurately all the time.
- if (C->use_cmove() && cmp_op == Op_CmpD) ;//keep going
- else if (iff->_prob < infrequent_prob ||
+ if (C->use_cmove() && (cmp_op == Op_CmpF || cmp_op == Op_CmpD)) {
+ //keep going
+ } else if (iff->_prob < infrequent_prob ||
iff->_prob > (1.0f - infrequent_prob))
return NULL;
--- a/src/hotspot/share/opto/matcher.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/opto/matcher.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -2267,6 +2267,7 @@
case Op_CMoveL:
case Op_CMoveN:
case Op_CMoveP:
+ case Op_CMoveVF:
case Op_CMoveVD: {
// Restructure into a binary tree for Matching. It's possible that
// we could move this code up next to the graph reshaping for IfNodes
--- a/src/hotspot/share/opto/superword.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/opto/superword.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -58,7 +58,7 @@
_mem_slice_tail(arena(), 8, 0, NULL), // memory slice tails
_node_info(arena(), 8, 0, SWNodeInfo::initial), // info needed per node
_clone_map(phase->C->clone_map()), // map of nodes created in cloning
- _cmovev_kit(_arena, this), // map to facilitate CMoveVD creation
+ _cmovev_kit(_arena, this), // map to facilitate CMoveV creation
_align_to_ref(NULL), // memory reference to align vectors to
_disjoint_ptrs(arena(), 8, 0, OrderedPair::initial), // runtime disambiguated pointer pairs
_dg(_arena), // dependence graph
@@ -511,8 +511,7 @@
combine_packs();
construct_my_pack_map();
-
- if (_do_vector_loop) {
+ if (UseVectorCmov) {
merge_packs_to_cmovd();
}
@@ -1249,8 +1248,8 @@
//------------------------------data_size---------------------------
int SuperWord::data_size(Node* s) {
- Node* use = NULL; //test if the node is a candidate for CMoveVD optimization, then return the size of CMov
- if (_do_vector_loop) {
+ Node* use = NULL; //test if the node is a candidate for CMoveV optimization, then return the size of CMov
+ if (UseVectorCmov) {
use = _cmovev_kit.is_Bool_candidate(s);
if (use != NULL) {
return data_size(use);
@@ -1260,6 +1259,7 @@
return data_size(use);
}
}
+
int bsize = type2aelembytes(velt_basic_type(s));
assert(bsize != 0, "valid size");
return bsize;
@@ -1718,6 +1718,9 @@
if (!cmovd->is_CMove()) {
return NULL;
}
+ if (cmovd->Opcode() != Op_CMoveF && cmovd->Opcode() != Op_CMoveD) {
+ return NULL;
+ }
if (pack(cmovd) != NULL) { // already in the cmov pack
return NULL;
}
@@ -2377,7 +2380,13 @@
}
BasicType bt = velt_basic_type(n);
const TypeVect* vt = TypeVect::make(bt, vlen);
- vn = new CMoveVDNode(cc, src1, src2, vt);
+ assert(bt == T_FLOAT || bt == T_DOUBLE, "Only vectorization for FP cmovs is supported");
+ if (bt == T_FLOAT) {
+ vn = new CMoveVFNode(cc, src1, src2, vt);
+ } else {
+ assert(bt == T_DOUBLE, "Expected double");
+ vn = new CMoveVDNode(cc, src1, src2, vt);
+ }
NOT_PRODUCT(if(is_trace_cmov()) {tty->print("SWPointer::output: created new CMove node %d: ", vn->_idx); vn->dump();})
} else if (opc == Op_FmaD || opc == Op_FmaF) {
// Promote operands to vector
--- a/src/hotspot/share/opto/vectornode.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/opto/vectornode.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -92,6 +92,9 @@
case Op_FmaF:
assert(bt == T_FLOAT, "must be");
return Op_FmaVF;
+ case Op_CMoveF:
+ assert(bt == T_FLOAT, "must be");
+ return Op_CMoveVF;
case Op_CMoveD:
assert(bt == T_DOUBLE, "must be");
return Op_CMoveVD;
--- a/src/hotspot/share/opto/vectornode.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/opto/vectornode.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -277,8 +277,16 @@
virtual int Opcode() const;
};
+//------------------------------CMoveVFNode--------------------------------------
+// Vector float conditional move
+class CMoveVFNode : public VectorNode {
+public:
+ CMoveVFNode(Node* in1, Node* in2, Node* in3, const TypeVect* vt) : VectorNode(in1, in2, in3, vt) {}
+ virtual int Opcode() const;
+};
+
//------------------------------CMoveVDNode--------------------------------------
-// Vector multiply double
+// Vector double conditional move
class CMoveVDNode : public VectorNode {
public:
CMoveVDNode(Node* in1, Node* in2, Node* in3, const TypeVect* vt) : VectorNode(in1, in2, in3, vt) {}
--- a/src/hotspot/share/prims/nativeLookup.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/prims/nativeLookup.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -224,7 +224,13 @@
st.print_raw(long_name);
if (os_style) os::print_jni_name_suffix_on(&st, args_size);
char* jni_name = st.as_string();
- return (address)os::dll_lookup(dll, jni_name);
+ address critical_entry = (address)os::dll_lookup(dll, jni_name);
+ // Close the handle to avoid keeping the library alive if the native method holder is unloaded.
+ // This is fine because the library is still kept alive by JNI (see JVM_LoadLibrary). As soon
+ // as the holder class and the library are unloaded (see JVM_UnloadLibrary), the native wrapper
+ // that calls 'critical_entry' becomes unreachable and is unloaded as well.
+ os::dll_unload(dll);
+ return critical_entry;
}
}
@@ -245,7 +251,6 @@
+ (method->is_static() ? 1 : 0) // class for static methods
+ method->size_of_parameters(); // actual parameters
-
// 1) Try JNI short style
entry = lookup_style(method, pure_name, "", args_size, true, in_base_library, CHECK_NULL);
if (entry != NULL) return entry;
--- a/src/hotspot/share/runtime/java.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/runtime/java.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -357,7 +357,7 @@
MemTracker::final_report(tty);
}
- Threads::log_smr_statistics();
+ ThreadsSMRSupport::log_smr_statistics();
}
#else // PRODUCT MODE STATISTICS
@@ -399,7 +399,7 @@
Method::print_touched_methods(tty);
}
- Threads::log_smr_statistics();
+ ThreadsSMRSupport::log_smr_statistics();
}
#endif
--- a/src/hotspot/share/runtime/thread.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/runtime/thread.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -107,7 +107,6 @@
#include "utilities/events.hpp"
#include "utilities/macros.hpp"
#include "utilities/preserveException.hpp"
-#include "utilities/resourceHash.hpp"
#include "utilities/vmError.hpp"
#if INCLUDE_ALL_GCS
#include "gc/cms/concurrentMarkSweepThread.hpp"
@@ -207,7 +206,7 @@
void JavaThread::smr_delete() {
if (_on_thread_list) {
- Threads::smr_delete(this);
+ ThreadsSMRSupport::smr_delete(this);
} else {
delete this;
}
@@ -419,7 +418,7 @@
assert(!thread->is_Java_thread() || Thread::current() == thread ||
!((JavaThread *) thread)->on_thread_list() ||
SafepointSynchronize::is_at_safepoint() ||
- Threads::is_a_protected_JavaThread_with_lock((JavaThread *) thread),
+ ThreadsSMRSupport::is_a_protected_JavaThread_with_lock((JavaThread *) thread),
"possibility of dangling Thread pointer");
}
#endif
@@ -3443,103 +3442,15 @@
// would like. We are actively migrating Threads_lock uses to other
// mechanisms in order to reduce Threads_lock contention.
-JavaThread* Threads::_thread_list = NULL;
-int Threads::_number_of_threads = 0;
-int Threads::_number_of_non_daemon_threads = 0;
-int Threads::_return_code = 0;
-int Threads::_thread_claim_parity = 0;
-size_t JavaThread::_stack_size_at_create = 0;
-// Safe Memory Reclamation (SMR) support:
-Monitor* Threads::_smr_delete_lock =
- new Monitor(Monitor::special, "smr_delete_lock",
- false /* allow_vm_block */,
- Monitor::_safepoint_check_never);
-// The '_cnt', '_max' and '_times" fields are enabled via
-// -XX:+EnableThreadSMRStatistics:
-
-// # of parallel threads in _smr_delete_lock->wait().
-// Impl note: Hard to imagine > 64K waiting threads so this could be 16-bit,
-// but there is no nice 16-bit _FORMAT support.
-uint Threads::_smr_delete_lock_wait_cnt = 0;
-
-// Max # of parallel threads in _smr_delete_lock->wait().
-// Impl note: See _smr_delete_lock_wait_cnt note.
-uint Threads::_smr_delete_lock_wait_max = 0;
-
-// Flag to indicate when an _smr_delete_lock->notify() is needed.
-// Impl note: See _smr_delete_lock_wait_cnt note.
-volatile uint Threads::_smr_delete_notify = 0;
-
-// # of threads deleted over VM lifetime.
-// Impl note: Atomically incremented over VM lifetime so use unsigned for more
-// range. Unsigned 64-bit would be more future proof, but 64-bit atomic inc
-// isn't available everywhere (or is it?).
-volatile uint Threads::_smr_deleted_thread_cnt = 0;
-
-// Max time in millis to delete a thread.
-// Impl note: 16-bit might be too small on an overloaded machine. Use
-// unsigned since this is a time value. Set via Atomic::cmpxchg() in a
-// loop for correctness.
-volatile uint Threads::_smr_deleted_thread_time_max = 0;
-
-// Cumulative time in millis to delete threads.
-// Impl note: Atomically added to over VM lifetime so use unsigned for more
-// range. Unsigned 64-bit would be more future proof, but 64-bit atomic inc
-// isn't available everywhere (or is it?).
-volatile uint Threads::_smr_deleted_thread_times = 0;
-
-ThreadsList* volatile Threads::_smr_java_thread_list = new ThreadsList(0);
-
-// # of ThreadsLists allocated over VM lifetime.
-// Impl note: We allocate a new ThreadsList for every thread create and
-// every thread delete so we need a bigger type than the
-// _smr_deleted_thread_cnt field.
-uint64_t Threads::_smr_java_thread_list_alloc_cnt = 1;
-
-// # of ThreadsLists freed over VM lifetime.
-// Impl note: See _smr_java_thread_list_alloc_cnt note.
-uint64_t Threads::_smr_java_thread_list_free_cnt = 0;
-
-// Max size ThreadsList allocated.
-// Impl note: Max # of threads alive at one time should fit in unsigned 32-bit.
-uint Threads::_smr_java_thread_list_max = 0;
-
-// Max # of nested ThreadsLists for a thread.
-// Impl note: Hard to imagine > 64K nested ThreadsLists so this could be
-// 16-bit, but there is no nice 16-bit _FORMAT support.
-uint Threads::_smr_nested_thread_list_max = 0;
-
-// # of ThreadsListHandles deleted over VM lifetime.
-// Impl note: Atomically incremented over VM lifetime so use unsigned for
-// more range. There will be fewer ThreadsListHandles than threads so
-// unsigned 32-bit should be fine.
-volatile uint Threads::_smr_tlh_cnt = 0;
-
-// Max time in millis to delete a ThreadsListHandle.
-// Impl note: 16-bit might be too small on an overloaded machine. Use
-// unsigned since this is a time value. Set via Atomic::cmpxchg() in a
-// loop for correctness.
-volatile uint Threads::_smr_tlh_time_max = 0;
-
-// Cumulative time in millis to delete ThreadsListHandles.
-// Impl note: Atomically added to over VM lifetime so use unsigned for more
-// range. Unsigned 64-bit would be more future proof, but 64-bit atomic inc
-// isn't available everywhere (or is it?).
-volatile uint Threads::_smr_tlh_times = 0;
-
-ThreadsList* Threads::_smr_to_delete_list = NULL;
-
-// # of parallel ThreadsLists on the to-delete list.
-// Impl note: Hard to imagine > 64K ThreadsLists needing to be deleted so
-// this could be 16-bit, but there is no nice 16-bit _FORMAT support.
-uint Threads::_smr_to_delete_list_cnt = 0;
-
-// Max # of parallel ThreadsLists on the to-delete list.
-// Impl note: See _smr_to_delete_list_cnt note.
-uint Threads::_smr_to_delete_list_max = 0;
+JavaThread* Threads::_thread_list = NULL;
+int Threads::_number_of_threads = 0;
+int Threads::_number_of_non_daemon_threads = 0;
+int Threads::_return_code = 0;
+int Threads::_thread_claim_parity = 0;
+size_t JavaThread::_stack_size_at_create = 0;
#ifdef ASSERT
-bool Threads::_vm_complete = false;
+bool Threads::_vm_complete = false;
#endif
static inline void *prefetch_and_load_ptr(void **addr, intx prefetch_interval) {
@@ -3561,12 +3472,8 @@
MACRO_current_p++, \
X = (JavaThread*)prefetch_and_load_ptr((void**)MACRO_current_p, (intx)MACRO_scan_interval))
-inline ThreadsList* Threads::get_smr_java_thread_list() {
- return (ThreadsList*)OrderAccess::load_acquire(&_smr_java_thread_list);
-}
-
// All JavaThreads
-#define ALL_JAVA_THREADS(X) DO_JAVA_THREADS(get_smr_java_thread_list(), X)
+#define ALL_JAVA_THREADS(X) DO_JAVA_THREADS(ThreadsSMRSupport::get_smr_java_thread_list(), X)
// All JavaThreads + all non-JavaThreads (i.e., every thread in the system)
void Threads::threads_do(ThreadClosure* tc) {
@@ -3667,240 +3574,6 @@
vmSymbols::void_method_signature(), CHECK);
}
-// Safe Memory Reclamation (SMR) support:
-//
-
-// Acquire a stable ThreadsList.
-//
-ThreadsList *Threads::acquire_stable_list(Thread *self, bool is_ThreadsListSetter) {
- assert(self != NULL, "sanity check");
- // acquire_stable_list_nested_path() will grab the Threads_lock
- // so let's make sure the ThreadsListHandle is in a safe place.
- // ThreadsListSetter cannot make this check on this code path.
- debug_only(if (!is_ThreadsListSetter && StrictSafepointChecks) self->check_for_valid_safepoint_state(/* potential_vm_operation */ false);)
-
- if (self->get_threads_hazard_ptr() == NULL) {
- // The typical case is first.
- return acquire_stable_list_fast_path(self);
- }
-
- // The nested case is rare.
- return acquire_stable_list_nested_path(self);
-}
-
-// Fast path (and lock free) way to acquire a stable ThreadsList.
-//
-ThreadsList *Threads::acquire_stable_list_fast_path(Thread *self) {
- assert(self != NULL, "sanity check");
- assert(self->get_threads_hazard_ptr() == NULL, "sanity check");
- assert(self->get_nested_threads_hazard_ptr() == NULL,
- "cannot have a nested hazard ptr with a NULL regular hazard ptr");
-
- ThreadsList* threads;
-
- // Stable recording of a hazard ptr for SMR. This code does not use
- // locks so its use of the _smr_java_thread_list & _threads_hazard_ptr
- // fields is racy relative to code that uses those fields with locks.
- // OrderAccess and Atomic functions are used to deal with those races.
- //
- while (true) {
- threads = get_smr_java_thread_list();
-
- // Publish a tagged hazard ptr to denote that the hazard ptr is not
- // yet verified as being stable. Due to the fence after the hazard
- // ptr write, it will be sequentially consistent w.r.t. the
- // sequentially consistent writes of the ThreadsList, even on
- // non-multiple copy atomic machines where stores can be observed
- // in different order from different observer threads.
- ThreadsList* unverified_threads = Thread::tag_hazard_ptr(threads);
- self->set_threads_hazard_ptr(unverified_threads);
-
- // If _smr_java_thread_list has changed, we have lost a race with
- // Threads::add() or Threads::remove() and have to try again.
- if (get_smr_java_thread_list() != threads) {
- continue;
- }
-
- // We try to remove the tag which will verify the hazard ptr as
- // being stable. This exchange can race with a scanning thread
- // which might invalidate the tagged hazard ptr to keep it from
- // being followed to access JavaThread ptrs. If we lose the race,
- // we simply retry. If we win the race, then the stable hazard
- // ptr is officially published.
- if (self->cmpxchg_threads_hazard_ptr(threads, unverified_threads) == unverified_threads) {
- break;
- }
- }
-
- // A stable hazard ptr has been published letting other threads know
- // that the ThreadsList and the JavaThreads reachable from this list
- // are protected and hence they should not be deleted until everyone
- // agrees it is safe to do so.
-
- return threads;
-}
-
-// Acquire a nested stable ThreadsList; this is rare so it uses
-// Threads_lock.
-//
-ThreadsList *Threads::acquire_stable_list_nested_path(Thread *self) {
- assert(self != NULL, "sanity check");
- assert(self->get_threads_hazard_ptr() != NULL,
- "cannot have a NULL regular hazard ptr when acquiring a nested hazard ptr");
-
- // The thread already has a hazard ptr (ThreadsList ref) so we need
- // to create a nested ThreadsListHandle with the current ThreadsList
- // since it might be different than our current hazard ptr. The need
- // for a nested ThreadsListHandle is rare so we do this while holding
- // the Threads_lock so we don't race with the scanning code; the code
- // is so much simpler this way.
-
- NestedThreadsList* node;
- {
- // Only grab the Threads_lock if we don't already own it.
- MutexLockerEx ml(Threads_lock->owned_by_self() ? NULL : Threads_lock);
- node = new NestedThreadsList(get_smr_java_thread_list());
- // We insert at the front of the list to match up with the delete
- // in release_stable_list().
- node->set_next(self->get_nested_threads_hazard_ptr());
- self->set_nested_threads_hazard_ptr(node);
- if (EnableThreadSMRStatistics) {
- self->inc_nested_threads_hazard_ptr_cnt();
- if (self->nested_threads_hazard_ptr_cnt() > _smr_nested_thread_list_max) {
- _smr_nested_thread_list_max = self->nested_threads_hazard_ptr_cnt();
- }
- }
- }
- log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::acquire_stable_list: add NestedThreadsList node containing ThreadsList=" INTPTR_FORMAT, os::current_thread_id(), p2i(node->t_list()));
-
- return node->t_list();
-}
-
-inline void Threads::add_smr_deleted_thread_times(uint add_value) {
- Atomic::add(add_value, &_smr_deleted_thread_times);
-}
-
-inline void Threads::inc_smr_deleted_thread_cnt() {
- Atomic::inc(&_smr_deleted_thread_cnt);
-}
-
-// Release a stable ThreadsList.
-//
-void Threads::release_stable_list(Thread *self) {
- assert(self != NULL, "sanity check");
- // release_stable_list_nested_path() will grab the Threads_lock
- // so let's make sure the ThreadsListHandle is in a safe place.
- debug_only(if (StrictSafepointChecks) self->check_for_valid_safepoint_state(/* potential_vm_operation */ false);)
-
- if (self->get_nested_threads_hazard_ptr() == NULL) {
- // The typical case is first.
- release_stable_list_fast_path(self);
- return;
- }
-
- // The nested case is rare.
- release_stable_list_nested_path(self);
-}
-
-// Fast path way to release a stable ThreadsList. The release portion
-// is lock-free, but the wake up portion is not.
-//
-void Threads::release_stable_list_fast_path(Thread *self) {
- assert(self != NULL, "sanity check");
- assert(self->get_threads_hazard_ptr() != NULL, "sanity check");
- assert(self->get_nested_threads_hazard_ptr() == NULL,
- "cannot have a nested hazard ptr when releasing a regular hazard ptr");
-
- // After releasing the hazard ptr, other threads may go ahead and
- // free up some memory temporarily used by a ThreadsList snapshot.
- self->set_threads_hazard_ptr(NULL);
-
- // We use double-check locking to reduce traffic on the system
- // wide smr_delete_lock.
- if (Threads::smr_delete_notify()) {
- // An exiting thread might be waiting in smr_delete(); we need to
- // check with smr_delete_lock to be sure.
- release_stable_list_wake_up((char *) "regular hazard ptr");
- }
-}
-
-// Release a nested stable ThreadsList; this is rare so it uses
-// Threads_lock.
-//
-void Threads::release_stable_list_nested_path(Thread *self) {
- assert(self != NULL, "sanity check");
- assert(self->get_nested_threads_hazard_ptr() != NULL, "sanity check");
- assert(self->get_threads_hazard_ptr() != NULL,
- "must have a regular hazard ptr to have nested hazard ptrs");
-
- // We have a nested ThreadsListHandle so we have to release it first.
- // The need for a nested ThreadsListHandle is rare so we do this while
- // holding the Threads_lock so we don't race with the scanning code;
- // the code is so much simpler this way.
-
- NestedThreadsList *node;
- {
- // Only grab the Threads_lock if we don't already own it.
- MutexLockerEx ml(Threads_lock->owned_by_self() ? NULL : Threads_lock);
- // We remove from the front of the list to match up with the insert
- // in acquire_stable_list().
- node = self->get_nested_threads_hazard_ptr();
- self->set_nested_threads_hazard_ptr(node->next());
- if (EnableThreadSMRStatistics) {
- self->dec_nested_threads_hazard_ptr_cnt();
- }
- }
-
- // An exiting thread might be waiting in smr_delete(); we need to
- // check with smr_delete_lock to be sure.
- release_stable_list_wake_up((char *) "nested hazard ptr");
-
- log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::release_stable_list: delete NestedThreadsList node containing ThreadsList=" INTPTR_FORMAT, os::current_thread_id(), p2i(node->t_list()));
-
- delete node;
-}
-
-// Wake up portion of the release stable ThreadsList protocol;
-// uses the smr_delete_lock().
-//
-void Threads::release_stable_list_wake_up(char *log_str) {
- assert(log_str != NULL, "sanity check");
-
- // Note: smr_delete_lock is held in smr_delete() for the entire
- // hazard ptr search so that we do not lose this notify() if
- // the exiting thread has to wait. That code path also holds
- // Threads_lock (which was grabbed before smr_delete_lock) so that
- // threads_do() can be called. This means the system can't start a
- // safepoint which means this thread can't take too long to get to
- // a safepoint because of being blocked on smr_delete_lock.
- //
- MonitorLockerEx ml(Threads::smr_delete_lock(), Monitor::_no_safepoint_check_flag);
- if (Threads::smr_delete_notify()) {
- // Notify any exiting JavaThreads that are waiting in smr_delete()
- // that we've released a ThreadsList.
- ml.notify_all();
- log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::release_stable_list notified %s", os::current_thread_id(), log_str);
- }
-}
-
-inline void Threads::update_smr_deleted_thread_time_max(uint new_value) {
- while (true) {
- uint cur_value = _smr_deleted_thread_time_max;
- if (new_value <= cur_value) {
- // No need to update max value so we're done.
- break;
- }
- if (Atomic::cmpxchg(new_value, &_smr_deleted_thread_time_max, cur_value) == cur_value) {
- // Updated max value so we're done. Otherwise try it all again.
- break;
- }
- }
-}
-
-inline ThreadsList* Threads::xchg_smr_java_thread_list(ThreadsList* new_list) {
- return (ThreadsList*)Atomic::xchg(new_list, &_smr_java_thread_list);
-}
-
void Threads::initialize_java_lang_classes(JavaThread* main_thread, TRAPS) {
TraceTime timer("Initialize java.lang classes", TRACETIME_LOG(Info, startuptime));
@@ -4666,501 +4339,6 @@
return JNI_FALSE;
}
-// Hash table of pointers found by a scan. Used for collecting hazard
-// pointers (ThreadsList references). Also used for collecting JavaThreads
-// that are indirectly referenced by hazard ptrs. An instance of this
-// class only contains one type of pointer.
-//
-class ThreadScanHashtable : public CHeapObj<mtThread> {
- private:
- static bool ptr_equals(void * const& s1, void * const& s2) {
- return s1 == s2;
- }
-
- static unsigned int ptr_hash(void * const& s1) {
- // 2654435761 = 2^32 * Phi (golden ratio)
- return (unsigned int)(((uint32_t)(uintptr_t)s1) * 2654435761u);
- }
-
- int _table_size;
- // ResourceHashtable SIZE is specified at compile time so our
- // dynamic _table_size is unused for now; 1031 is the first prime
- // after 1024.
- typedef ResourceHashtable<void *, int, &ThreadScanHashtable::ptr_hash,
- &ThreadScanHashtable::ptr_equals, 1031,
- ResourceObj::C_HEAP, mtThread> PtrTable;
- PtrTable * _ptrs;
-
- public:
- // ResourceHashtable is passed to various functions and populated in
- // different places so we allocate it using C_HEAP to make it immune
- // from any ResourceMarks that happen to be in the code paths.
- ThreadScanHashtable(int table_size) : _table_size(table_size), _ptrs(new (ResourceObj::C_HEAP, mtThread) PtrTable()) {}
-
- ~ThreadScanHashtable() { delete _ptrs; }
-
- bool has_entry(void *pointer) {
- int *val_ptr = _ptrs->get(pointer);
- return val_ptr != NULL && *val_ptr == 1;
- }
-
- void add_entry(void *pointer) {
- _ptrs->put(pointer, 1);
- }
-};
-
-// Closure to gather JavaThreads indirectly referenced by hazard ptrs
-// (ThreadsList references) into a hash table. This closure handles part 2
-// of the dance - adding all the JavaThreads referenced by the hazard
-// pointer (ThreadsList reference) to the hash table.
-//
-class AddThreadHazardPointerThreadClosure : public ThreadClosure {
- private:
- ThreadScanHashtable *_table;
-
- public:
- AddThreadHazardPointerThreadClosure(ThreadScanHashtable *table) : _table(table) {}
-
- virtual void do_thread(Thread *thread) {
- if (!_table->has_entry((void*)thread)) {
- // The same JavaThread might be on more than one ThreadsList or
- // more than one thread might be using the same ThreadsList. In
- // either case, we only need a single entry for a JavaThread.
- _table->add_entry((void*)thread);
- }
- }
-};
-
-// Closure to gather JavaThreads indirectly referenced by hazard ptrs
-// (ThreadsList references) into a hash table. This closure handles part 1
-// of the dance - hazard ptr chain walking and dispatch to another
-// closure.
-//
-class ScanHazardPtrGatherProtectedThreadsClosure : public ThreadClosure {
- private:
- ThreadScanHashtable *_table;
- public:
- ScanHazardPtrGatherProtectedThreadsClosure(ThreadScanHashtable *table) : _table(table) {}
-
- virtual void do_thread(Thread *thread) {
- assert_locked_or_safepoint(Threads_lock);
-
- if (thread == NULL) return;
-
- // This code races with Threads::acquire_stable_list() which is
- // lock-free so we have to handle some special situations.
- //
- ThreadsList *current_list = NULL;
- while (true) {
- current_list = thread->get_threads_hazard_ptr();
- // No hazard ptr so nothing more to do.
- if (current_list == NULL) {
- assert(thread->get_nested_threads_hazard_ptr() == NULL,
- "cannot have a nested hazard ptr with a NULL regular hazard ptr");
- return;
- }
-
- // If the hazard ptr is verified as stable (since it is not tagged),
- // then it is safe to use.
- if (!Thread::is_hazard_ptr_tagged(current_list)) break;
-
- // The hazard ptr is tagged as not yet verified as being stable
- // so we are racing with acquire_stable_list(). This exchange
- // attempts to invalidate the hazard ptr. If we win the race,
- // then we can ignore this unstable hazard ptr and the other
- // thread will retry the attempt to publish a stable hazard ptr.
- // If we lose the race, then we retry our attempt to look at the
- // hazard ptr.
- if (thread->cmpxchg_threads_hazard_ptr(NULL, current_list) == current_list) return;
- }
-
- // The current JavaThread has a hazard ptr (ThreadsList reference)
- // which might be _smr_java_thread_list or it might be an older
- // ThreadsList that has been removed but not freed. In either case,
- // the hazard ptr is protecting all the JavaThreads on that
- // ThreadsList.
- AddThreadHazardPointerThreadClosure add_cl(_table);
- current_list->threads_do(&add_cl);
-
- // Any NestedThreadsLists are also protecting JavaThreads so
- // gather those also; the ThreadsLists may be different.
- for (NestedThreadsList* node = thread->get_nested_threads_hazard_ptr();
- node != NULL; node = node->next()) {
- node->t_list()->threads_do(&add_cl);
- }
- }
-};
-
-// Closure to print JavaThreads that have a hazard ptr (ThreadsList
-// reference) that contains an indirect reference to a specific JavaThread.
-//
-class ScanHazardPtrPrintMatchingThreadsClosure : public ThreadClosure {
- private:
- JavaThread *_thread;
- public:
- ScanHazardPtrPrintMatchingThreadsClosure(JavaThread *thread) : _thread(thread) {}
-
- virtual void do_thread(Thread *thread) {
- assert_locked_or_safepoint(Threads_lock);
-
- if (thread == NULL) return;
- ThreadsList *current_list = thread->get_threads_hazard_ptr();
- if (current_list == NULL) {
- assert(thread->get_nested_threads_hazard_ptr() == NULL,
- "cannot have a nested hazard ptr with a NULL regular hazard ptr");
- return;
- }
- // If the hazard ptr is unverified, then ignore it.
- if (Thread::is_hazard_ptr_tagged(current_list)) return;
-
- // The current JavaThread has a hazard ptr (ThreadsList reference)
- // which might be _smr_java_thread_list or it might be an older
- // ThreadsList that has been removed but not freed. In either case,
- // the hazard ptr is protecting all the JavaThreads on that
- // ThreadsList, but we only care about matching a specific JavaThread.
- DO_JAVA_THREADS(current_list, p) {
- if (p == _thread) {
- log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::smr_delete: thread1=" INTPTR_FORMAT " has a hazard pointer for thread2=" INTPTR_FORMAT, os::current_thread_id(), p2i(thread), p2i(_thread));
- break;
- }
- }
-
- // Any NestedThreadsLists are also protecting JavaThreads so
- // check those also; the ThreadsLists may be different.
- for (NestedThreadsList* node = thread->get_nested_threads_hazard_ptr();
- node != NULL; node = node->next()) {
- DO_JAVA_THREADS(node->t_list(), p) {
- if (p == _thread) {
- log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::smr_delete: thread1=" INTPTR_FORMAT " has a nested hazard pointer for thread2=" INTPTR_FORMAT, os::current_thread_id(), p2i(thread), p2i(_thread));
- return;
- }
- }
- }
- }
-};
-
-// Return true if the specified JavaThread is protected by a hazard
-// pointer (ThreadsList reference). Otherwise, returns false.
-//
-bool Threads::is_a_protected_JavaThread(JavaThread *thread) {
- assert_locked_or_safepoint(Threads_lock);
-
- // Hash table size should be first power of two higher than twice
- // the length of the Threads list.
- int hash_table_size = MIN2(_number_of_threads, 32) << 1;
- hash_table_size--;
- hash_table_size |= hash_table_size >> 1;
- hash_table_size |= hash_table_size >> 2;
- hash_table_size |= hash_table_size >> 4;
- hash_table_size |= hash_table_size >> 8;
- hash_table_size |= hash_table_size >> 16;
- hash_table_size++;
-
- // Gather a hash table of the JavaThreads indirectly referenced by
- // hazard ptrs.
- ThreadScanHashtable *scan_table = new ThreadScanHashtable(hash_table_size);
- ScanHazardPtrGatherProtectedThreadsClosure scan_cl(scan_table);
- Threads::threads_do(&scan_cl);
-
- bool thread_is_protected = false;
- if (scan_table->has_entry((void*)thread)) {
- thread_is_protected = true;
- }
- delete scan_table;
- return thread_is_protected;
-}
-
-// Safely delete a JavaThread when it is no longer in use by a
-// ThreadsListHandle.
-//
-void Threads::smr_delete(JavaThread *thread) {
- assert(!Threads_lock->owned_by_self(), "sanity");
-
- bool has_logged_once = false;
- elapsedTimer timer;
- if (EnableThreadSMRStatistics) {
- timer.start();
- }
-
- while (true) {
- {
- // No safepoint check because this JavaThread is not on the
- // Threads list.
- MutexLockerEx ml(Threads_lock, Mutex::_no_safepoint_check_flag);
- // Cannot use a MonitorLockerEx helper here because we have
- // to drop the Threads_lock first if we wait.
- Threads::smr_delete_lock()->lock_without_safepoint_check();
- // Set the smr_delete_notify flag after we grab smr_delete_lock
- // and before we scan hazard ptrs because we're doing
- // double-check locking in release_stable_list().
- Threads::set_smr_delete_notify();
-
- if (!is_a_protected_JavaThread(thread)) {
- // This is the common case.
- Threads::clear_smr_delete_notify();
- Threads::smr_delete_lock()->unlock();
- break;
- }
- if (!has_logged_once) {
- has_logged_once = true;
- log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::smr_delete: thread=" INTPTR_FORMAT " is not deleted.", os::current_thread_id(), p2i(thread));
- if (log_is_enabled(Debug, os, thread)) {
- ScanHazardPtrPrintMatchingThreadsClosure scan_cl(thread);
- Threads::threads_do(&scan_cl);
- }
- }
- } // We have to drop the Threads_lock to wait or delete the thread
-
- if (EnableThreadSMRStatistics) {
- _smr_delete_lock_wait_cnt++;
- if (_smr_delete_lock_wait_cnt > _smr_delete_lock_wait_max) {
- _smr_delete_lock_wait_max = _smr_delete_lock_wait_cnt;
- }
- }
- // Wait for a release_stable_list() call before we check again. No
- // safepoint check, no timeout, and not as suspend equivalent flag
- // because this JavaThread is not on the Threads list.
- Threads::smr_delete_lock()->wait(Mutex::_no_safepoint_check_flag, 0,
- !Mutex::_as_suspend_equivalent_flag);
- if (EnableThreadSMRStatistics) {
- _smr_delete_lock_wait_cnt--;
- }
-
- Threads::clear_smr_delete_notify();
- Threads::smr_delete_lock()->unlock();
- // Retry the whole scenario.
- }
-
- if (ThreadLocalHandshakes) {
- // The thread is about to be deleted so cancel any handshake.
- thread->cancel_handshake();
- }
-
- delete thread;
- if (EnableThreadSMRStatistics) {
- timer.stop();
- uint millis = (uint)timer.milliseconds();
- Threads::inc_smr_deleted_thread_cnt();
- Threads::add_smr_deleted_thread_times(millis);
- Threads::update_smr_deleted_thread_time_max(millis);
- }
-
- log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::smr_delete: thread=" INTPTR_FORMAT " is deleted.", os::current_thread_id(), p2i(thread));
-}
-
-bool Threads::smr_delete_notify() {
- // Use load_acquire() in order to see any updates to _smr_delete_notify
- // earlier than when smr_delete_lock is grabbed.
- return (OrderAccess::load_acquire(&_smr_delete_notify) != 0);
-}
-
-// set_smr_delete_notify() and clear_smr_delete_notify() are called
-// under the protection of the smr_delete_lock, but we also use an
-// Atomic operation to ensure the memory update is seen earlier than
-// when the smr_delete_lock is dropped.
-//
-void Threads::set_smr_delete_notify() {
- Atomic::inc(&_smr_delete_notify);
-}
-
-void Threads::clear_smr_delete_notify() {
- Atomic::dec(&_smr_delete_notify);
-}
-
-// Closure to gather hazard ptrs (ThreadsList references) into a hash table.
-//
-class ScanHazardPtrGatherThreadsListClosure : public ThreadClosure {
- private:
- ThreadScanHashtable *_table;
- public:
- ScanHazardPtrGatherThreadsListClosure(ThreadScanHashtable *table) : _table(table) {}
-
- virtual void do_thread(Thread* thread) {
- assert_locked_or_safepoint(Threads_lock);
-
- if (thread == NULL) return;
- ThreadsList *threads = thread->get_threads_hazard_ptr();
- if (threads == NULL) {
- assert(thread->get_nested_threads_hazard_ptr() == NULL,
- "cannot have a nested hazard ptr with a NULL regular hazard ptr");
- return;
- }
- // In this closure we always ignore the tag that might mark this
- // hazard ptr as not yet verified. If we happen to catch an
- // unverified hazard ptr that is subsequently discarded (not
- // published), then the only side effect is that we might keep a
- // to-be-deleted ThreadsList alive a little longer.
- threads = Thread::untag_hazard_ptr(threads);
- if (!_table->has_entry((void*)threads)) {
- _table->add_entry((void*)threads);
- }
-
- // Any NestedThreadsLists are also protecting JavaThreads so
- // gather those also; the ThreadsLists may be different.
- for (NestedThreadsList* node = thread->get_nested_threads_hazard_ptr();
- node != NULL; node = node->next()) {
- threads = node->t_list();
- if (!_table->has_entry((void*)threads)) {
- _table->add_entry((void*)threads);
- }
- }
- }
-};
-
-// Safely free a ThreadsList after a Threads::add() or Threads::remove().
-// The specified ThreadsList may not get deleted during this call if it
-// is still in-use (referenced by a hazard ptr). Other ThreadsLists
-// in the chain may get deleted by this call if they are no longer in-use.
-void Threads::smr_free_list(ThreadsList* threads) {
- assert_locked_or_safepoint(Threads_lock);
-
- threads->set_next_list(_smr_to_delete_list);
- _smr_to_delete_list = threads;
- if (EnableThreadSMRStatistics) {
- _smr_to_delete_list_cnt++;
- if (_smr_to_delete_list_cnt > _smr_to_delete_list_max) {
- _smr_to_delete_list_max = _smr_to_delete_list_cnt;
- }
- }
-
- // Hash table size should be first power of two higher than twice the length of the ThreadsList
- int hash_table_size = MIN2(_number_of_threads, 32) << 1;
- hash_table_size--;
- hash_table_size |= hash_table_size >> 1;
- hash_table_size |= hash_table_size >> 2;
- hash_table_size |= hash_table_size >> 4;
- hash_table_size |= hash_table_size >> 8;
- hash_table_size |= hash_table_size >> 16;
- hash_table_size++;
-
- // Gather a hash table of the current hazard ptrs:
- ThreadScanHashtable *scan_table = new ThreadScanHashtable(hash_table_size);
- ScanHazardPtrGatherThreadsListClosure scan_cl(scan_table);
- Threads::threads_do(&scan_cl);
-
- // Walk through the linked list of pending freeable ThreadsLists
- // and free the ones that are not referenced from hazard ptrs.
- ThreadsList* current = _smr_to_delete_list;
- ThreadsList* prev = NULL;
- ThreadsList* next = NULL;
- bool threads_is_freed = false;
- while (current != NULL) {
- next = current->next_list();
- if (!scan_table->has_entry((void*)current)) {
- // This ThreadsList is not referenced by a hazard ptr.
- if (prev != NULL) {
- prev->set_next_list(next);
- }
- if (_smr_to_delete_list == current) {
- _smr_to_delete_list = next;
- }
-
- log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::smr_free_list: threads=" INTPTR_FORMAT " is freed.", os::current_thread_id(), p2i(current));
- if (current == threads) threads_is_freed = true;
- delete current;
- if (EnableThreadSMRStatistics) {
- _smr_java_thread_list_free_cnt++;
- _smr_to_delete_list_cnt--;
- }
- } else {
- prev = current;
- }
- current = next;
- }
-
- if (!threads_is_freed) {
- // Only report "is not freed" on the original call to
- // smr_free_list() for this ThreadsList.
- log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::smr_free_list: threads=" INTPTR_FORMAT " is not freed.", os::current_thread_id(), p2i(threads));
- }
-
- delete scan_table;
-}
-
-// Remove a JavaThread from a ThreadsList. The returned ThreadsList is a
-// new copy of the specified ThreadsList with the specified JavaThread
-// removed.
-ThreadsList *ThreadsList::remove_thread(ThreadsList* list, JavaThread* java_thread) {
- assert(list->_length > 0, "sanity");
-
- uint i = 0;
- DO_JAVA_THREADS(list, current) {
- if (current == java_thread) {
- break;
- }
- i++;
- }
- assert(i < list->_length, "did not find JavaThread on the list");
- const uint index = i;
- const uint new_length = list->_length - 1;
- const uint head_length = index;
- const uint tail_length = (new_length >= index) ? (new_length - index) : 0;
- ThreadsList *const new_list = new ThreadsList(new_length);
-
- if (head_length > 0) {
- Copy::disjoint_words((HeapWord*)list->_threads, (HeapWord*)new_list->_threads, head_length);
- }
- if (tail_length > 0) {
- Copy::disjoint_words((HeapWord*)list->_threads + index + 1, (HeapWord*)new_list->_threads + index, tail_length);
- }
-
- return new_list;
-}
-
-// Add a JavaThread to a ThreadsList. The returned ThreadsList is a
-// new copy of the specified ThreadsList with the specified JavaThread
-// appended to the end.
-ThreadsList *ThreadsList::add_thread(ThreadsList *list, JavaThread *java_thread) {
- const uint index = list->_length;
- const uint new_length = index + 1;
- const uint head_length = index;
- ThreadsList *const new_list = new ThreadsList(new_length);
-
- if (head_length > 0) {
- Copy::disjoint_words((HeapWord*)list->_threads, (HeapWord*)new_list->_threads, head_length);
- }
- *(JavaThread**)(new_list->_threads + index) = java_thread;
-
- return new_list;
-}
-
-int ThreadsList::find_index_of_JavaThread(JavaThread *target) {
- if (target == NULL) {
- return -1;
- }
- for (uint i = 0; i < length(); i++) {
- if (target == thread_at(i)) {
- return (int)i;
- }
- }
- return -1;
-}
-
-JavaThread* ThreadsList::find_JavaThread_from_java_tid(jlong java_tid) const {
- DO_JAVA_THREADS(this, thread) {
- oop tobj = thread->threadObj();
- // Ignore the thread if it hasn't run yet, has exited
- // or is starting to exit.
- if (tobj != NULL && !thread->is_exiting() &&
- java_tid == java_lang_Thread::thread_id(tobj)) {
- // found a match
- return thread;
- }
- }
- return NULL;
-}
-
-bool ThreadsList::includes(const JavaThread * const p) const {
- if (p == NULL) {
- return false;
- }
- DO_JAVA_THREADS(this, q) {
- if (q == p) {
- return true;
- }
- }
- return false;
-}
void Threads::add(JavaThread* p, bool force_daemon) {
// The threads lock must be owned at this point
@@ -5189,18 +4367,7 @@
ThreadService::add_thread(p, daemon);
// Maintain fast thread list
- ThreadsList *new_list = ThreadsList::add_thread(get_smr_java_thread_list(), p);
- if (EnableThreadSMRStatistics) {
- _smr_java_thread_list_alloc_cnt++;
- if (new_list->length() > _smr_java_thread_list_max) {
- _smr_java_thread_list_max = new_list->length();
- }
- }
- // Initial _smr_java_thread_list will not generate a "Threads::add" mesg.
- log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::add: new ThreadsList=" INTPTR_FORMAT, os::current_thread_id(), p2i(new_list));
-
- ThreadsList *old_list = xchg_smr_java_thread_list(new_list);
- smr_free_list(old_list);
+ ThreadsSMRSupport::add_thread(p);
// Possible GC point.
Events::log(p, "Thread added: " INTPTR_FORMAT, p2i(p));
@@ -5215,20 +4382,10 @@
// that we do not remove thread without safepoint code notice
{ MutexLocker ml(Threads_lock);
- assert(get_smr_java_thread_list()->includes(p), "p must be present");
+ assert(ThreadsSMRSupport::get_smr_java_thread_list()->includes(p), "p must be present");
// Maintain fast thread list
- ThreadsList *new_list = ThreadsList::remove_thread(get_smr_java_thread_list(), p);
- if (EnableThreadSMRStatistics) {
- _smr_java_thread_list_alloc_cnt++;
- // This list is smaller so no need to check for a "longest" update.
- }
-
- // Final _smr_java_thread_list will not generate a "Threads::remove" mesg.
- log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::remove: new ThreadsList=" INTPTR_FORMAT, os::current_thread_id(), p2i(new_list));
-
- ThreadsList *old_list = xchg_smr_java_thread_list(new_list);
- smr_free_list(old_list);
+ ThreadsSMRSupport::remove_thread(p);
JavaThread* current = _thread_list;
JavaThread* prev = NULL;
@@ -5453,7 +4610,7 @@
}
#endif // INCLUDE_SERVICES
- print_smr_info_on(st);
+ ThreadsSMRSupport::print_smr_info_on(st);
st->cr();
ALL_JAVA_THREADS(p) {
@@ -5486,101 +4643,6 @@
st->flush();
}
-// Log Threads class SMR info.
-void Threads::log_smr_statistics() {
- LogTarget(Info, thread, smr) log;
- if (log.is_enabled()) {
- LogStream out(log);
- print_smr_info_on(&out);
- }
-}
-
-// Print Threads class SMR info.
-void Threads::print_smr_info_on(outputStream* st) {
- // Only grab the Threads_lock if we don't already own it
- // and if we are not reporting an error.
- MutexLockerEx ml((Threads_lock->owned_by_self() || VMError::is_error_reported()) ? NULL : Threads_lock);
-
- st->print_cr("Threads class SMR info:");
- st->print_cr("_smr_java_thread_list=" INTPTR_FORMAT ", length=%u, "
- "elements={", p2i(_smr_java_thread_list),
- _smr_java_thread_list->length());
- print_smr_info_elements_on(st, _smr_java_thread_list);
- st->print_cr("}");
- if (_smr_to_delete_list != NULL) {
- st->print_cr("_smr_to_delete_list=" INTPTR_FORMAT ", length=%u, "
- "elements={", p2i(_smr_to_delete_list),
- _smr_to_delete_list->length());
- print_smr_info_elements_on(st, _smr_to_delete_list);
- st->print_cr("}");
- for (ThreadsList *t_list = _smr_to_delete_list->next_list();
- t_list != NULL; t_list = t_list->next_list()) {
- st->print("next-> " INTPTR_FORMAT ", length=%u, "
- "elements={", p2i(t_list), t_list->length());
- print_smr_info_elements_on(st, t_list);
- st->print_cr("}");
- }
- }
- if (!EnableThreadSMRStatistics) {
- return;
- }
- st->print_cr("_smr_java_thread_list_alloc_cnt=" UINT64_FORMAT ","
- "_smr_java_thread_list_free_cnt=" UINT64_FORMAT ","
- "_smr_java_thread_list_max=%u, "
- "_smr_nested_thread_list_max=%u",
- _smr_java_thread_list_alloc_cnt,
- _smr_java_thread_list_free_cnt,
- _smr_java_thread_list_max,
- _smr_nested_thread_list_max);
- if (_smr_tlh_cnt > 0) {
- st->print_cr("_smr_tlh_cnt=%u"
- ", _smr_tlh_times=%u"
- ", avg_smr_tlh_time=%0.2f"
- ", _smr_tlh_time_max=%u",
- _smr_tlh_cnt, _smr_tlh_times,
- ((double) _smr_tlh_times / _smr_tlh_cnt),
- _smr_tlh_time_max);
- }
- if (_smr_deleted_thread_cnt > 0) {
- st->print_cr("_smr_deleted_thread_cnt=%u"
- ", _smr_deleted_thread_times=%u"
- ", avg_smr_deleted_thread_time=%0.2f"
- ", _smr_deleted_thread_time_max=%u",
- _smr_deleted_thread_cnt, _smr_deleted_thread_times,
- ((double) _smr_deleted_thread_times / _smr_deleted_thread_cnt),
- _smr_deleted_thread_time_max);
- }
- st->print_cr("_smr_delete_lock_wait_cnt=%u, _smr_delete_lock_wait_max=%u",
- _smr_delete_lock_wait_cnt, _smr_delete_lock_wait_max);
- st->print_cr("_smr_to_delete_list_cnt=%u, _smr_to_delete_list_max=%u",
- _smr_to_delete_list_cnt, _smr_to_delete_list_max);
-}
-
-// Print ThreadsList elements (4 per line).
-void Threads::print_smr_info_elements_on(outputStream* st,
- ThreadsList* t_list) {
- uint cnt = 0;
- JavaThreadIterator jti(t_list);
- for (JavaThread *jt = jti.first(); jt != NULL; jt = jti.next()) {
- st->print(INTPTR_FORMAT, p2i(jt));
- if (cnt < t_list->length() - 1) {
- // Separate with comma or comma-space except for the last one.
- if (((cnt + 1) % 4) == 0) {
- // Four INTPTR_FORMAT fit on an 80 column line so end the
- // current line with just a comma.
- st->print_cr(",");
- } else {
- // Not the last one on the current line so use comma-space:
- st->print(", ");
- }
- } else {
- // Last one so just end the current line.
- st->cr();
- }
- cnt++;
- }
-}
-
void Threads::print_on_error(Thread* this_thread, outputStream* st, Thread* current, char* buf,
int buflen, bool* found_current) {
if (this_thread != NULL) {
@@ -5617,7 +4679,7 @@
// memory (even in resource area), it might deadlock the error handler.
void Threads::print_on_error(outputStream* st, Thread* current, char* buf,
int buflen) {
- print_smr_info_on(st);
+ ThreadsSMRSupport::print_smr_info_on(st);
st->cr();
bool found_current = false;
--- a/src/hotspot/share/runtime/thread.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/runtime/thread.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -58,6 +58,7 @@
class ThreadSafepointState;
class ThreadsList;
+class ThreadsSMRSupport;
class NestedThreadsList;
class JvmtiThreadState;
@@ -103,7 +104,6 @@
// - WatcherThread
class Thread: public ThreadShadow {
- friend class Threads;
friend class VMStructs;
friend class JVMCIVMStructs;
private:
@@ -121,12 +121,14 @@
protected:
// Support for forcing alignment of thread objects for biased locking
void* _real_malloc_address;
+
// JavaThread lifecycle support:
- friend class ScanHazardPtrGatherProtectedThreadsClosure;
- friend class ScanHazardPtrGatherThreadsListClosure;
- friend class ScanHazardPtrPrintMatchingThreadsClosure;
- friend class ThreadsListHandle;
- friend class ThreadsListSetter;
+ friend class ScanHazardPtrGatherProtectedThreadsClosure; // for cmpxchg_threads_hazard_ptr(), get_threads_hazard_ptr(), is_hazard_ptr_tagged() access
+ friend class ScanHazardPtrGatherThreadsListClosure; // for get_nested_threads_hazard_ptr(), get_threads_hazard_ptr(), untag_hazard_ptr() access
+ friend class ScanHazardPtrPrintMatchingThreadsClosure; // for get_threads_hazard_ptr(), is_hazard_ptr_tagged() access
+ friend class ThreadsListSetter; // for get_threads_hazard_ptr() access
+ friend class ThreadsSMRSupport; // for get_threads_hazard_ptr() access
+
ThreadsList* volatile _threads_hazard_ptr;
ThreadsList* cmpxchg_threads_hazard_ptr(ThreadsList* exchange_value, ThreadsList* compare_value);
ThreadsList* get_threads_hazard_ptr();
@@ -2126,62 +2128,18 @@
class Threads: AllStatic {
friend class VMStructs;
private:
- // Safe Memory Reclamation (SMR) support:
- // The coordination between Threads::release_stable_list() and
- // Threads::smr_delete() uses the smr_delete_lock in order to
- // reduce the traffic on the Threads_lock.
- static Monitor* _smr_delete_lock;
- // The '_cnt', '_max' and '_times" fields are enabled via
- // -XX:+EnableThreadSMRStatistics (see thread.cpp for a
- // description about each field):
- static uint _smr_delete_lock_wait_cnt;
- static uint _smr_delete_lock_wait_max;
- // The smr_delete_notify flag is used for proper double-check
- // locking in order to reduce the traffic on the smr_delete_lock.
- static volatile uint _smr_delete_notify;
- static volatile uint _smr_deleted_thread_cnt;
- static volatile uint _smr_deleted_thread_time_max;
- static volatile uint _smr_deleted_thread_times;
- static ThreadsList* volatile _smr_java_thread_list;
- static uint64_t _smr_java_thread_list_alloc_cnt;
- static uint64_t _smr_java_thread_list_free_cnt;
- static uint _smr_java_thread_list_max;
- static uint _smr_nested_thread_list_max;
- static volatile uint _smr_tlh_cnt;
- static volatile uint _smr_tlh_time_max;
- static volatile uint _smr_tlh_times;
- static ThreadsList* _smr_to_delete_list;
- static uint _smr_to_delete_list_cnt;
- static uint _smr_to_delete_list_max;
-
- static JavaThread* _thread_list;
- static int _number_of_threads;
- static int _number_of_non_daemon_threads;
- static int _return_code;
- static int _thread_claim_parity;
+ static JavaThread* _thread_list;
+ static int _number_of_threads;
+ static int _number_of_non_daemon_threads;
+ static int _return_code;
+ static int _thread_claim_parity;
#ifdef ASSERT
- static bool _vm_complete;
+ static bool _vm_complete;
#endif
static void initialize_java_lang_classes(JavaThread* main_thread, TRAPS);
static void initialize_jsr292_core_classes(TRAPS);
- static ThreadsList *acquire_stable_list_fast_path(Thread *self);
- static ThreadsList *acquire_stable_list_nested_path(Thread *self);
- static void add_smr_deleted_thread_times(uint add_value);
- static void clear_smr_delete_notify();
- static ThreadsList* get_smr_java_thread_list();
- static void inc_smr_deleted_thread_cnt();
- static void release_stable_list_fast_path(Thread *self);
- static void release_stable_list_nested_path(Thread *self);
- static void release_stable_list_wake_up(char *log_str);
- static void set_smr_delete_notify();
- static Monitor* smr_delete_lock() { return _smr_delete_lock; }
- static bool smr_delete_notify();
- static void smr_free_list(ThreadsList* threads);
- static void update_smr_deleted_thread_time_max(uint new_value);
- static ThreadsList* xchg_smr_java_thread_list(ThreadsList* new_list);
-
public:
// Thread management
// force_daemon is a concession to JNI, where we may need to add a
@@ -2191,19 +2149,6 @@
static void threads_do(ThreadClosure* tc);
static void possibly_parallel_threads_do(bool is_par, ThreadClosure* tc);
- // SMR support:
- static ThreadsList *acquire_stable_list(Thread *self, bool is_ThreadsListSetter);
- static void release_stable_list(Thread *self);
- static bool is_a_protected_JavaThread(JavaThread *thread);
- static bool is_a_protected_JavaThread_with_lock(JavaThread *thread) {
- MutexLockerEx ml(Threads_lock->owned_by_self() ? NULL : Threads_lock);
- return is_a_protected_JavaThread(thread);
- }
- static void smr_delete(JavaThread *thread);
- static void inc_smr_tlh_cnt();
- static void update_smr_tlh_time_max(uint new_value);
- static void add_smr_tlh_times(uint add_value);
-
// Initializes the vm and creates the vm thread
static jint create_vm(JavaVMInitArgs* args, bool* canTryAgain);
static void convert_vm_init_libraries_to_agents();
@@ -2264,10 +2209,7 @@
// Verification
static void verify();
- static void log_smr_statistics();
static void print_on(outputStream* st, bool print_stacks, bool internal_format, bool print_concurrent_locks);
- static void print_smr_info_on(outputStream* st);
- static void print_smr_info_elements_on(outputStream* st, ThreadsList* t_list);
static void print(bool print_stacks, bool internal_format) {
// this function is only used by debug.cpp
print_on(tty, print_stacks, internal_format, false /* no concurrent lock printed */);
--- a/src/hotspot/share/runtime/thread.inline.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/runtime/thread.inline.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -28,7 +28,6 @@
#include "runtime/atomic.hpp"
#include "runtime/os.inline.hpp"
#include "runtime/thread.hpp"
-#include "runtime/threadSMR.hpp"
inline void Thread::set_suspend_flag(SuspendFlags f) {
assert(sizeof(jint) == sizeof(_suspend_flags), "size mismatch");
@@ -212,26 +211,4 @@
OrderAccess::release_store((volatile jint *) &_terminated, (jint) _thread_terminated);
}
-inline void Threads::add_smr_tlh_times(uint add_value) {
- Atomic::add(add_value, &_smr_tlh_times);
-}
-
-inline void Threads::inc_smr_tlh_cnt() {
- Atomic::inc(&_smr_tlh_cnt);
-}
-
-inline void Threads::update_smr_tlh_time_max(uint new_value) {
- while (true) {
- uint cur_value = _smr_tlh_time_max;
- if (new_value <= cur_value) {
- // No need to update max value so we're done.
- break;
- }
- if (Atomic::cmpxchg(new_value, &_smr_tlh_time_max, cur_value) == cur_value) {
- // Updated max value so we're done. Otherwise try it all again.
- break;
- }
- }
-}
-
#endif // SHARE_VM_RUNTIME_THREAD_INLINE_HPP
--- a/src/hotspot/share/runtime/threadSMR.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/runtime/threadSMR.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -23,10 +23,357 @@
*/
#include "precompiled.hpp"
+#include "logging/logStream.hpp"
#include "memory/allocation.inline.hpp"
#include "runtime/thread.inline.hpp"
-#include "runtime/threadSMR.hpp"
+#include "runtime/threadSMR.inline.hpp"
#include "services/threadService.hpp"
+#include "utilities/globalDefinitions.hpp"
+#include "utilities/resourceHash.hpp"
+
+Monitor* ThreadsSMRSupport::_smr_delete_lock =
+ new Monitor(Monitor::special, "smr_delete_lock",
+ false /* allow_vm_block */,
+ Monitor::_safepoint_check_never);
+// The '_cnt', '_max' and '_times" fields are enabled via
+// -XX:+EnableThreadSMRStatistics:
+
+// # of parallel threads in _smr_delete_lock->wait().
+// Impl note: Hard to imagine > 64K waiting threads so this could be 16-bit,
+// but there is no nice 16-bit _FORMAT support.
+uint ThreadsSMRSupport::_smr_delete_lock_wait_cnt = 0;
+
+// Max # of parallel threads in _smr_delete_lock->wait().
+// Impl note: See _smr_delete_lock_wait_cnt note.
+uint ThreadsSMRSupport::_smr_delete_lock_wait_max = 0;
+
+// Flag to indicate when an _smr_delete_lock->notify() is needed.
+// Impl note: See _smr_delete_lock_wait_cnt note.
+volatile uint ThreadsSMRSupport::_smr_delete_notify = 0;
+
+// # of threads deleted over VM lifetime.
+// Impl note: Atomically incremented over VM lifetime so use unsigned for more
+// range. Unsigned 64-bit would be more future proof, but 64-bit atomic inc
+// isn't available everywhere (or is it?).
+volatile uint ThreadsSMRSupport::_smr_deleted_thread_cnt = 0;
+
+// Max time in millis to delete a thread.
+// Impl note: 16-bit might be too small on an overloaded machine. Use
+// unsigned since this is a time value. Set via Atomic::cmpxchg() in a
+// loop for correctness.
+volatile uint ThreadsSMRSupport::_smr_deleted_thread_time_max = 0;
+
+// Cumulative time in millis to delete threads.
+// Impl note: Atomically added to over VM lifetime so use unsigned for more
+// range. Unsigned 64-bit would be more future proof, but 64-bit atomic inc
+// isn't available everywhere (or is it?).
+volatile uint ThreadsSMRSupport::_smr_deleted_thread_times = 0;
+
+ThreadsList* volatile ThreadsSMRSupport::_smr_java_thread_list = new ThreadsList(0);
+
+// # of ThreadsLists allocated over VM lifetime.
+// Impl note: We allocate a new ThreadsList for every thread create and
+// every thread delete so we need a bigger type than the
+// _smr_deleted_thread_cnt field.
+uint64_t ThreadsSMRSupport::_smr_java_thread_list_alloc_cnt = 1;
+
+// # of ThreadsLists freed over VM lifetime.
+// Impl note: See _smr_java_thread_list_alloc_cnt note.
+uint64_t ThreadsSMRSupport::_smr_java_thread_list_free_cnt = 0;
+
+// Max size ThreadsList allocated.
+// Impl note: Max # of threads alive at one time should fit in unsigned 32-bit.
+uint ThreadsSMRSupport::_smr_java_thread_list_max = 0;
+
+// Max # of nested ThreadsLists for a thread.
+// Impl note: Hard to imagine > 64K nested ThreadsLists so this could be
+// 16-bit, but there is no nice 16-bit _FORMAT support.
+uint ThreadsSMRSupport::_smr_nested_thread_list_max = 0;
+
+// # of ThreadsListHandles deleted over VM lifetime.
+// Impl note: Atomically incremented over VM lifetime so use unsigned for
+// more range. There will be fewer ThreadsListHandles than threads so
+// unsigned 32-bit should be fine.
+volatile uint ThreadsSMRSupport::_smr_tlh_cnt = 0;
+
+// Max time in millis to delete a ThreadsListHandle.
+// Impl note: 16-bit might be too small on an overloaded machine. Use
+// unsigned since this is a time value. Set via Atomic::cmpxchg() in a
+// loop for correctness.
+volatile uint ThreadsSMRSupport::_smr_tlh_time_max = 0;
+
+// Cumulative time in millis to delete ThreadsListHandles.
+// Impl note: Atomically added to over VM lifetime so use unsigned for more
+// range. Unsigned 64-bit would be more future proof, but 64-bit atomic inc
+// isn't available everywhere (or is it?).
+volatile uint ThreadsSMRSupport::_smr_tlh_times = 0;
+
+ThreadsList* ThreadsSMRSupport::_smr_to_delete_list = NULL;
+
+// # of parallel ThreadsLists on the to-delete list.
+// Impl note: Hard to imagine > 64K ThreadsLists needing to be deleted so
+// this could be 16-bit, but there is no nice 16-bit _FORMAT support.
+uint ThreadsSMRSupport::_smr_to_delete_list_cnt = 0;
+
+// Max # of parallel ThreadsLists on the to-delete list.
+// Impl note: See _smr_to_delete_list_cnt note.
+uint ThreadsSMRSupport::_smr_to_delete_list_max = 0;
+
+
+// 'inline' functions first so the definitions are before first use:
+
+inline void ThreadsSMRSupport::add_smr_deleted_thread_times(uint add_value) {
+ Atomic::add(add_value, &_smr_deleted_thread_times);
+}
+
+inline void ThreadsSMRSupport::inc_smr_deleted_thread_cnt() {
+ Atomic::inc(&_smr_deleted_thread_cnt);
+}
+
+inline void ThreadsSMRSupport::inc_smr_java_thread_list_alloc_cnt() {
+ _smr_java_thread_list_alloc_cnt++;
+}
+
+inline void ThreadsSMRSupport::update_smr_deleted_thread_time_max(uint new_value) {
+ while (true) {
+ uint cur_value = _smr_deleted_thread_time_max;
+ if (new_value <= cur_value) {
+ // No need to update max value so we're done.
+ break;
+ }
+ if (Atomic::cmpxchg(new_value, &_smr_deleted_thread_time_max, cur_value) == cur_value) {
+ // Updated max value so we're done. Otherwise try it all again.
+ break;
+ }
+ }
+}
+
+inline void ThreadsSMRSupport::update_smr_java_thread_list_max(uint new_value) {
+ if (new_value > _smr_java_thread_list_max) {
+ _smr_java_thread_list_max = new_value;
+ }
+}
+
+inline ThreadsList* ThreadsSMRSupport::xchg_smr_java_thread_list(ThreadsList* new_list) {
+ return (ThreadsList*)Atomic::xchg(new_list, &_smr_java_thread_list);
+}
+
+
+// Hash table of pointers found by a scan. Used for collecting hazard
+// pointers (ThreadsList references). Also used for collecting JavaThreads
+// that are indirectly referenced by hazard ptrs. An instance of this
+// class only contains one type of pointer.
+//
+class ThreadScanHashtable : public CHeapObj<mtThread> {
+ private:
+ static bool ptr_equals(void * const& s1, void * const& s2) {
+ return s1 == s2;
+ }
+
+ static unsigned int ptr_hash(void * const& s1) {
+ // 2654435761 = 2^32 * Phi (golden ratio)
+ return (unsigned int)(((uint32_t)(uintptr_t)s1) * 2654435761u);
+ }
+
+ int _table_size;
+ // ResourceHashtable SIZE is specified at compile time so our
+ // dynamic _table_size is unused for now; 1031 is the first prime
+ // after 1024.
+ typedef ResourceHashtable<void *, int, &ThreadScanHashtable::ptr_hash,
+ &ThreadScanHashtable::ptr_equals, 1031,
+ ResourceObj::C_HEAP, mtThread> PtrTable;
+ PtrTable * _ptrs;
+
+ public:
+ // ResourceHashtable is passed to various functions and populated in
+ // different places so we allocate it using C_HEAP to make it immune
+ // from any ResourceMarks that happen to be in the code paths.
+ ThreadScanHashtable(int table_size) : _table_size(table_size), _ptrs(new (ResourceObj::C_HEAP, mtThread) PtrTable()) {}
+
+ ~ThreadScanHashtable() { delete _ptrs; }
+
+ bool has_entry(void *pointer) {
+ int *val_ptr = _ptrs->get(pointer);
+ return val_ptr != NULL && *val_ptr == 1;
+ }
+
+ void add_entry(void *pointer) {
+ _ptrs->put(pointer, 1);
+ }
+};
+
+// Closure to gather JavaThreads indirectly referenced by hazard ptrs
+// (ThreadsList references) into a hash table. This closure handles part 2
+// of the dance - adding all the JavaThreads referenced by the hazard
+// pointer (ThreadsList reference) to the hash table.
+//
+class AddThreadHazardPointerThreadClosure : public ThreadClosure {
+ private:
+ ThreadScanHashtable *_table;
+
+ public:
+ AddThreadHazardPointerThreadClosure(ThreadScanHashtable *table) : _table(table) {}
+
+ virtual void do_thread(Thread *thread) {
+ if (!_table->has_entry((void*)thread)) {
+ // The same JavaThread might be on more than one ThreadsList or
+ // more than one thread might be using the same ThreadsList. In
+ // either case, we only need a single entry for a JavaThread.
+ _table->add_entry((void*)thread);
+ }
+ }
+};
+
+// Closure to gather JavaThreads indirectly referenced by hazard ptrs
+// (ThreadsList references) into a hash table. This closure handles part 1
+// of the dance - hazard ptr chain walking and dispatch to another
+// closure.
+//
+class ScanHazardPtrGatherProtectedThreadsClosure : public ThreadClosure {
+ private:
+ ThreadScanHashtable *_table;
+ public:
+ ScanHazardPtrGatherProtectedThreadsClosure(ThreadScanHashtable *table) : _table(table) {}
+
+ virtual void do_thread(Thread *thread) {
+ assert_locked_or_safepoint(Threads_lock);
+
+ if (thread == NULL) return;
+
+ // This code races with ThreadsSMRSupport::acquire_stable_list() which
+ // is lock-free so we have to handle some special situations.
+ //
+ ThreadsList *current_list = NULL;
+ while (true) {
+ current_list = thread->get_threads_hazard_ptr();
+ // No hazard ptr so nothing more to do.
+ if (current_list == NULL) {
+ assert(thread->get_nested_threads_hazard_ptr() == NULL,
+ "cannot have a nested hazard ptr with a NULL regular hazard ptr");
+ return;
+ }
+
+ // If the hazard ptr is verified as stable (since it is not tagged),
+ // then it is safe to use.
+ if (!Thread::is_hazard_ptr_tagged(current_list)) break;
+
+ // The hazard ptr is tagged as not yet verified as being stable
+ // so we are racing with acquire_stable_list(). This exchange
+ // attempts to invalidate the hazard ptr. If we win the race,
+ // then we can ignore this unstable hazard ptr and the other
+ // thread will retry the attempt to publish a stable hazard ptr.
+ // If we lose the race, then we retry our attempt to look at the
+ // hazard ptr.
+ if (thread->cmpxchg_threads_hazard_ptr(NULL, current_list) == current_list) return;
+ }
+
+ // The current JavaThread has a hazard ptr (ThreadsList reference)
+ // which might be _smr_java_thread_list or it might be an older
+ // ThreadsList that has been removed but not freed. In either case,
+ // the hazard ptr is protecting all the JavaThreads on that
+ // ThreadsList.
+ AddThreadHazardPointerThreadClosure add_cl(_table);
+ current_list->threads_do(&add_cl);
+
+ // Any NestedThreadsLists are also protecting JavaThreads so
+ // gather those also; the ThreadsLists may be different.
+ for (NestedThreadsList* node = thread->get_nested_threads_hazard_ptr();
+ node != NULL; node = node->next()) {
+ node->t_list()->threads_do(&add_cl);
+ }
+ }
+};
+
+// Closure to gather hazard ptrs (ThreadsList references) into a hash table.
+//
+class ScanHazardPtrGatherThreadsListClosure : public ThreadClosure {
+ private:
+ ThreadScanHashtable *_table;
+ public:
+ ScanHazardPtrGatherThreadsListClosure(ThreadScanHashtable *table) : _table(table) {}
+
+ virtual void do_thread(Thread* thread) {
+ assert_locked_or_safepoint(Threads_lock);
+
+ if (thread == NULL) return;
+ ThreadsList *threads = thread->get_threads_hazard_ptr();
+ if (threads == NULL) {
+ assert(thread->get_nested_threads_hazard_ptr() == NULL,
+ "cannot have a nested hazard ptr with a NULL regular hazard ptr");
+ return;
+ }
+ // In this closure we always ignore the tag that might mark this
+ // hazard ptr as not yet verified. If we happen to catch an
+ // unverified hazard ptr that is subsequently discarded (not
+ // published), then the only side effect is that we might keep a
+ // to-be-deleted ThreadsList alive a little longer.
+ threads = Thread::untag_hazard_ptr(threads);
+ if (!_table->has_entry((void*)threads)) {
+ _table->add_entry((void*)threads);
+ }
+
+ // Any NestedThreadsLists are also protecting JavaThreads so
+ // gather those also; the ThreadsLists may be different.
+ for (NestedThreadsList* node = thread->get_nested_threads_hazard_ptr();
+ node != NULL; node = node->next()) {
+ threads = node->t_list();
+ if (!_table->has_entry((void*)threads)) {
+ _table->add_entry((void*)threads);
+ }
+ }
+ }
+};
+
+// Closure to print JavaThreads that have a hazard ptr (ThreadsList
+// reference) that contains an indirect reference to a specific JavaThread.
+//
+class ScanHazardPtrPrintMatchingThreadsClosure : public ThreadClosure {
+ private:
+ JavaThread *_thread;
+ public:
+ ScanHazardPtrPrintMatchingThreadsClosure(JavaThread *thread) : _thread(thread) {}
+
+ virtual void do_thread(Thread *thread) {
+ assert_locked_or_safepoint(Threads_lock);
+
+ if (thread == NULL) return;
+ ThreadsList *current_list = thread->get_threads_hazard_ptr();
+ if (current_list == NULL) {
+ assert(thread->get_nested_threads_hazard_ptr() == NULL,
+ "cannot have a nested hazard ptr with a NULL regular hazard ptr");
+ return;
+ }
+ // If the hazard ptr is unverified, then ignore it.
+ if (Thread::is_hazard_ptr_tagged(current_list)) return;
+
+ // The current JavaThread has a hazard ptr (ThreadsList reference)
+ // which might be _smr_java_thread_list or it might be an older
+ // ThreadsList that has been removed but not freed. In either case,
+ // the hazard ptr is protecting all the JavaThreads on that
+ // ThreadsList, but we only care about matching a specific JavaThread.
+ JavaThreadIterator jti(current_list);
+ for (JavaThread *p = jti.first(); p != NULL; p = jti.next()) {
+ if (p == _thread) {
+ log_debug(thread, smr)("tid=" UINTX_FORMAT ": ThreadsSMRSupport::smr_delete: thread1=" INTPTR_FORMAT " has a hazard pointer for thread2=" INTPTR_FORMAT, os::current_thread_id(), p2i(thread), p2i(_thread));
+ break;
+ }
+ }
+
+ // Any NestedThreadsLists are also protecting JavaThreads so
+ // check those also; the ThreadsLists may be different.
+ for (NestedThreadsList* node = thread->get_nested_threads_hazard_ptr();
+ node != NULL; node = node->next()) {
+ JavaThreadIterator jti(node->t_list());
+ for (JavaThread *p = jti.first(); p != NULL; p = jti.next()) {
+ if (p == _thread) {
+ log_debug(thread, smr)("tid=" UINTX_FORMAT ": ThreadsSMRSupport::smr_delete: thread1=" INTPTR_FORMAT " has a nested hazard pointer for thread2=" INTPTR_FORMAT, os::current_thread_id(), p2i(thread), p2i(_thread));
+ return;
+ }
+ }
+ }
+ }
+};
+
// 'entries + 1' so we always have at least one entry.
ThreadsList::ThreadsList(int entries) : _length(entries), _threads(NEW_C_HEAP_ARRAY(JavaThread*, entries + 1, mtThread)), _next_list(NULL) {
@@ -37,20 +384,87 @@
FREE_C_HEAP_ARRAY(JavaThread*, _threads);
}
-ThreadsListSetter::~ThreadsListSetter() {
- if (_target_needs_release) {
- // The hazard ptr in the target needs to be released.
- Threads::release_stable_list(_target);
+// Add a JavaThread to a ThreadsList. The returned ThreadsList is a
+// new copy of the specified ThreadsList with the specified JavaThread
+// appended to the end.
+ThreadsList *ThreadsList::add_thread(ThreadsList *list, JavaThread *java_thread) {
+ const uint index = list->_length;
+ const uint new_length = index + 1;
+ const uint head_length = index;
+ ThreadsList *const new_list = new ThreadsList(new_length);
+
+ if (head_length > 0) {
+ Copy::disjoint_words((HeapWord*)list->_threads, (HeapWord*)new_list->_threads, head_length);
}
+ *(JavaThread**)(new_list->_threads + index) = java_thread;
+
+ return new_list;
+}
+
+int ThreadsList::find_index_of_JavaThread(JavaThread *target) {
+ if (target == NULL) {
+ return -1;
+ }
+ for (uint i = 0; i < length(); i++) {
+ if (target == thread_at(i)) {
+ return (int)i;
+ }
+ }
+ return -1;
}
-void ThreadsListSetter::set() {
- assert(_target->get_threads_hazard_ptr() == NULL, "hazard ptr should not already be set");
- (void) Threads::acquire_stable_list(_target, /* is_ThreadsListSetter */ true);
- _target_needs_release = true;
+JavaThread* ThreadsList::find_JavaThread_from_java_tid(jlong java_tid) const {
+ for (uint i = 0; i < length(); i++) {
+ JavaThread* thread = thread_at(i);
+ oop tobj = thread->threadObj();
+ // Ignore the thread if it hasn't run yet, has exited
+ // or is starting to exit.
+ if (tobj != NULL && !thread->is_exiting() &&
+ java_tid == java_lang_Thread::thread_id(tobj)) {
+ // found a match
+ return thread;
+ }
+ }
+ return NULL;
}
-ThreadsListHandle::ThreadsListHandle(Thread *self) : _list(Threads::acquire_stable_list(self, /* is_ThreadsListSetter */ false)), _self(self) {
+bool ThreadsList::includes(const JavaThread * const p) const {
+ if (p == NULL) {
+ return false;
+ }
+ for (uint i = 0; i < length(); i++) {
+ if (thread_at(i) == p) {
+ return true;
+ }
+ }
+ return false;
+}
+
+// Remove a JavaThread from a ThreadsList. The returned ThreadsList is a
+// new copy of the specified ThreadsList with the specified JavaThread
+// removed.
+ThreadsList *ThreadsList::remove_thread(ThreadsList* list, JavaThread* java_thread) {
+ assert(list->_length > 0, "sanity");
+
+ uint i = (uint)list->find_index_of_JavaThread(java_thread);
+ assert(i < list->_length, "did not find JavaThread on the list");
+ const uint index = i;
+ const uint new_length = list->_length - 1;
+ const uint head_length = index;
+ const uint tail_length = (new_length >= index) ? (new_length - index) : 0;
+ ThreadsList *const new_list = new ThreadsList(new_length);
+
+ if (head_length > 0) {
+ Copy::disjoint_words((HeapWord*)list->_threads, (HeapWord*)new_list->_threads, head_length);
+ }
+ if (tail_length > 0) {
+ Copy::disjoint_words((HeapWord*)list->_threads + index + 1, (HeapWord*)new_list->_threads + index, tail_length);
+ }
+
+ return new_list;
+}
+
+ThreadsListHandle::ThreadsListHandle(Thread *self) : _list(ThreadsSMRSupport::acquire_stable_list(self, /* is_ThreadsListSetter */ false)), _self(self) {
assert(self == Thread::current(), "sanity check");
if (EnableThreadSMRStatistics) {
_timer.start();
@@ -58,13 +472,11 @@
}
ThreadsListHandle::~ThreadsListHandle() {
- Threads::release_stable_list(_self);
+ ThreadsSMRSupport::release_stable_list(_self);
if (EnableThreadSMRStatistics) {
_timer.stop();
uint millis = (uint)_timer.milliseconds();
- Threads::inc_smr_tlh_cnt();
- Threads::add_smr_tlh_times(millis);
- Threads::update_smr_tlh_time_max(millis);
+ ThreadsSMRSupport::update_smr_tlh_stats(millis);
}
}
@@ -119,3 +531,546 @@
*jt_pp = java_thread;
return true;
}
+
+ThreadsListSetter::~ThreadsListSetter() {
+ if (_target_needs_release) {
+ // The hazard ptr in the target needs to be released.
+ ThreadsSMRSupport::release_stable_list(_target);
+ }
+}
+
+void ThreadsListSetter::set() {
+ assert(_target->get_threads_hazard_ptr() == NULL, "hazard ptr should not already be set");
+ (void) ThreadsSMRSupport::acquire_stable_list(_target, /* is_ThreadsListSetter */ true);
+ _target_needs_release = true;
+}
+
+// Acquire a stable ThreadsList.
+//
+ThreadsList *ThreadsSMRSupport::acquire_stable_list(Thread *self, bool is_ThreadsListSetter) {
+ assert(self != NULL, "sanity check");
+ // acquire_stable_list_nested_path() will grab the Threads_lock
+ // so let's make sure the ThreadsListHandle is in a safe place.
+ // ThreadsListSetter cannot make this check on this code path.
+ debug_only(if (!is_ThreadsListSetter && StrictSafepointChecks) self->check_for_valid_safepoint_state(/* potential_vm_operation */ false);)
+
+ if (self->get_threads_hazard_ptr() == NULL) {
+ // The typical case is first.
+ return acquire_stable_list_fast_path(self);
+ }
+
+ // The nested case is rare.
+ return acquire_stable_list_nested_path(self);
+}
+
+// Fast path (and lock free) way to acquire a stable ThreadsList.
+//
+ThreadsList *ThreadsSMRSupport::acquire_stable_list_fast_path(Thread *self) {
+ assert(self != NULL, "sanity check");
+ assert(self->get_threads_hazard_ptr() == NULL, "sanity check");
+ assert(self->get_nested_threads_hazard_ptr() == NULL,
+ "cannot have a nested hazard ptr with a NULL regular hazard ptr");
+
+ ThreadsList* threads;
+
+ // Stable recording of a hazard ptr for SMR. This code does not use
+ // locks so its use of the _smr_java_thread_list & _threads_hazard_ptr
+ // fields is racy relative to code that uses those fields with locks.
+ // OrderAccess and Atomic functions are used to deal with those races.
+ //
+ while (true) {
+ threads = get_smr_java_thread_list();
+
+ // Publish a tagged hazard ptr to denote that the hazard ptr is not
+ // yet verified as being stable. Due to the fence after the hazard
+ // ptr write, it will be sequentially consistent w.r.t. the
+ // sequentially consistent writes of the ThreadsList, even on
+ // non-multiple copy atomic machines where stores can be observed
+ // in different order from different observer threads.
+ ThreadsList* unverified_threads = Thread::tag_hazard_ptr(threads);
+ self->set_threads_hazard_ptr(unverified_threads);
+
+ // If _smr_java_thread_list has changed, we have lost a race with
+ // Threads::add() or Threads::remove() and have to try again.
+ if (get_smr_java_thread_list() != threads) {
+ continue;
+ }
+
+ // We try to remove the tag which will verify the hazard ptr as
+ // being stable. This exchange can race with a scanning thread
+ // which might invalidate the tagged hazard ptr to keep it from
+ // being followed to access JavaThread ptrs. If we lose the race,
+ // we simply retry. If we win the race, then the stable hazard
+ // ptr is officially published.
+ if (self->cmpxchg_threads_hazard_ptr(threads, unverified_threads) == unverified_threads) {
+ break;
+ }
+ }
+
+ // A stable hazard ptr has been published letting other threads know
+ // that the ThreadsList and the JavaThreads reachable from this list
+ // are protected and hence they should not be deleted until everyone
+ // agrees it is safe to do so.
+
+ return threads;
+}
+
+// Acquire a nested stable ThreadsList; this is rare so it uses
+// Threads_lock.
+//
+ThreadsList *ThreadsSMRSupport::acquire_stable_list_nested_path(Thread *self) {
+ assert(self != NULL, "sanity check");
+ assert(self->get_threads_hazard_ptr() != NULL,
+ "cannot have a NULL regular hazard ptr when acquiring a nested hazard ptr");
+
+ // The thread already has a hazard ptr (ThreadsList ref) so we need
+ // to create a nested ThreadsListHandle with the current ThreadsList
+ // since it might be different than our current hazard ptr. The need
+ // for a nested ThreadsListHandle is rare so we do this while holding
+ // the Threads_lock so we don't race with the scanning code; the code
+ // is so much simpler this way.
+
+ NestedThreadsList* node;
+ {
+ // Only grab the Threads_lock if we don't already own it.
+ MutexLockerEx ml(Threads_lock->owned_by_self() ? NULL : Threads_lock);
+ node = new NestedThreadsList(get_smr_java_thread_list());
+ // We insert at the front of the list to match up with the delete
+ // in release_stable_list().
+ node->set_next(self->get_nested_threads_hazard_ptr());
+ self->set_nested_threads_hazard_ptr(node);
+ if (EnableThreadSMRStatistics) {
+ self->inc_nested_threads_hazard_ptr_cnt();
+ if (self->nested_threads_hazard_ptr_cnt() > _smr_nested_thread_list_max) {
+ _smr_nested_thread_list_max = self->nested_threads_hazard_ptr_cnt();
+ }
+ }
+ }
+ log_debug(thread, smr)("tid=" UINTX_FORMAT ": ThreadsSMRSupport::acquire_stable_list: add NestedThreadsList node containing ThreadsList=" INTPTR_FORMAT, os::current_thread_id(), p2i(node->t_list()));
+
+ return node->t_list();
+}
+
+void ThreadsSMRSupport::add_thread(JavaThread *thread){
+ ThreadsList *new_list = ThreadsList::add_thread(ThreadsSMRSupport::get_smr_java_thread_list(), thread);
+ if (EnableThreadSMRStatistics) {
+ ThreadsSMRSupport::inc_smr_java_thread_list_alloc_cnt();
+ ThreadsSMRSupport::update_smr_java_thread_list_max(new_list->length());
+ }
+ // Initial _smr_java_thread_list will not generate a "Threads::add" mesg.
+ log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::add: new ThreadsList=" INTPTR_FORMAT, os::current_thread_id(), p2i(new_list));
+
+ ThreadsList *old_list = ThreadsSMRSupport::xchg_smr_java_thread_list(new_list);
+ ThreadsSMRSupport::smr_free_list(old_list);
+}
+
+// set_smr_delete_notify() and clear_smr_delete_notify() are called
+// under the protection of the smr_delete_lock, but we also use an
+// Atomic operation to ensure the memory update is seen earlier than
+// when the smr_delete_lock is dropped.
+//
+void ThreadsSMRSupport::clear_smr_delete_notify() {
+ Atomic::dec(&_smr_delete_notify);
+}
+
+// Return true if the specified JavaThread is protected by a hazard
+// pointer (ThreadsList reference). Otherwise, returns false.
+//
+bool ThreadsSMRSupport::is_a_protected_JavaThread(JavaThread *thread) {
+ assert_locked_or_safepoint(Threads_lock);
+
+ // Hash table size should be first power of two higher than twice
+ // the length of the Threads list.
+ int hash_table_size = MIN2((int)get_smr_java_thread_list()->length(), 32) << 1;
+ hash_table_size--;
+ hash_table_size |= hash_table_size >> 1;
+ hash_table_size |= hash_table_size >> 2;
+ hash_table_size |= hash_table_size >> 4;
+ hash_table_size |= hash_table_size >> 8;
+ hash_table_size |= hash_table_size >> 16;
+ hash_table_size++;
+
+ // Gather a hash table of the JavaThreads indirectly referenced by
+ // hazard ptrs.
+ ThreadScanHashtable *scan_table = new ThreadScanHashtable(hash_table_size);
+ ScanHazardPtrGatherProtectedThreadsClosure scan_cl(scan_table);
+ Threads::threads_do(&scan_cl);
+
+ bool thread_is_protected = false;
+ if (scan_table->has_entry((void*)thread)) {
+ thread_is_protected = true;
+ }
+ delete scan_table;
+ return thread_is_protected;
+}
+
+// Release a stable ThreadsList.
+//
+void ThreadsSMRSupport::release_stable_list(Thread *self) {
+ assert(self != NULL, "sanity check");
+ // release_stable_list_nested_path() will grab the Threads_lock
+ // so let's make sure the ThreadsListHandle is in a safe place.
+ debug_only(if (StrictSafepointChecks) self->check_for_valid_safepoint_state(/* potential_vm_operation */ false);)
+
+ if (self->get_nested_threads_hazard_ptr() == NULL) {
+ // The typical case is first.
+ release_stable_list_fast_path(self);
+ return;
+ }
+
+ // The nested case is rare.
+ release_stable_list_nested_path(self);
+}
+
+// Fast path way to release a stable ThreadsList. The release portion
+// is lock-free, but the wake up portion is not.
+//
+void ThreadsSMRSupport::release_stable_list_fast_path(Thread *self) {
+ assert(self != NULL, "sanity check");
+ assert(self->get_threads_hazard_ptr() != NULL, "sanity check");
+ assert(self->get_nested_threads_hazard_ptr() == NULL,
+ "cannot have a nested hazard ptr when releasing a regular hazard ptr");
+
+ // After releasing the hazard ptr, other threads may go ahead and
+ // free up some memory temporarily used by a ThreadsList snapshot.
+ self->set_threads_hazard_ptr(NULL);
+
+ // We use double-check locking to reduce traffic on the system
+ // wide smr_delete_lock.
+ if (ThreadsSMRSupport::smr_delete_notify()) {
+ // An exiting thread might be waiting in smr_delete(); we need to
+ // check with smr_delete_lock to be sure.
+ release_stable_list_wake_up((char *) "regular hazard ptr");
+ }
+}
+
+// Release a nested stable ThreadsList; this is rare so it uses
+// Threads_lock.
+//
+void ThreadsSMRSupport::release_stable_list_nested_path(Thread *self) {
+ assert(self != NULL, "sanity check");
+ assert(self->get_nested_threads_hazard_ptr() != NULL, "sanity check");
+ assert(self->get_threads_hazard_ptr() != NULL,
+ "must have a regular hazard ptr to have nested hazard ptrs");
+
+ // We have a nested ThreadsListHandle so we have to release it first.
+ // The need for a nested ThreadsListHandle is rare so we do this while
+ // holding the Threads_lock so we don't race with the scanning code;
+ // the code is so much simpler this way.
+
+ NestedThreadsList *node;
+ {
+ // Only grab the Threads_lock if we don't already own it.
+ MutexLockerEx ml(Threads_lock->owned_by_self() ? NULL : Threads_lock);
+ // We remove from the front of the list to match up with the insert
+ // in acquire_stable_list().
+ node = self->get_nested_threads_hazard_ptr();
+ self->set_nested_threads_hazard_ptr(node->next());
+ if (EnableThreadSMRStatistics) {
+ self->dec_nested_threads_hazard_ptr_cnt();
+ }
+ }
+
+ // An exiting thread might be waiting in smr_delete(); we need to
+ // check with smr_delete_lock to be sure.
+ release_stable_list_wake_up((char *) "nested hazard ptr");
+
+ log_debug(thread, smr)("tid=" UINTX_FORMAT ": ThreadsSMRSupport::release_stable_list: delete NestedThreadsList node containing ThreadsList=" INTPTR_FORMAT, os::current_thread_id(), p2i(node->t_list()));
+
+ delete node;
+}
+
+// Wake up portion of the release stable ThreadsList protocol;
+// uses the smr_delete_lock().
+//
+void ThreadsSMRSupport::release_stable_list_wake_up(char *log_str) {
+ assert(log_str != NULL, "sanity check");
+
+ // Note: smr_delete_lock is held in smr_delete() for the entire
+ // hazard ptr search so that we do not lose this notify() if
+ // the exiting thread has to wait. That code path also holds
+ // Threads_lock (which was grabbed before smr_delete_lock) so that
+ // threads_do() can be called. This means the system can't start a
+ // safepoint which means this thread can't take too long to get to
+ // a safepoint because of being blocked on smr_delete_lock.
+ //
+ MonitorLockerEx ml(ThreadsSMRSupport::smr_delete_lock(), Monitor::_no_safepoint_check_flag);
+ if (ThreadsSMRSupport::smr_delete_notify()) {
+ // Notify any exiting JavaThreads that are waiting in smr_delete()
+ // that we've released a ThreadsList.
+ ml.notify_all();
+ log_debug(thread, smr)("tid=" UINTX_FORMAT ": ThreadsSMRSupport::release_stable_list notified %s", os::current_thread_id(), log_str);
+ }
+}
+
+void ThreadsSMRSupport::remove_thread(JavaThread *thread) {
+ ThreadsList *new_list = ThreadsList::remove_thread(ThreadsSMRSupport::get_smr_java_thread_list(), thread);
+ if (EnableThreadSMRStatistics) {
+ ThreadsSMRSupport::inc_smr_java_thread_list_alloc_cnt();
+ // This list is smaller so no need to check for a "longest" update.
+ }
+
+ // Final _smr_java_thread_list will not generate a "Threads::remove" mesg.
+ log_debug(thread, smr)("tid=" UINTX_FORMAT ": Threads::remove: new ThreadsList=" INTPTR_FORMAT, os::current_thread_id(), p2i(new_list));
+
+ ThreadsList *old_list = ThreadsSMRSupport::xchg_smr_java_thread_list(new_list);
+ ThreadsSMRSupport::smr_free_list(old_list);
+}
+
+// See note for clear_smr_delete_notify().
+//
+void ThreadsSMRSupport::set_smr_delete_notify() {
+ Atomic::inc(&_smr_delete_notify);
+}
+
+// Safely delete a JavaThread when it is no longer in use by a
+// ThreadsListHandle.
+//
+void ThreadsSMRSupport::smr_delete(JavaThread *thread) {
+ assert(!Threads_lock->owned_by_self(), "sanity");
+
+ bool has_logged_once = false;
+ elapsedTimer timer;
+ if (EnableThreadSMRStatistics) {
+ timer.start();
+ }
+
+ while (true) {
+ {
+ // No safepoint check because this JavaThread is not on the
+ // Threads list.
+ MutexLockerEx ml(Threads_lock, Mutex::_no_safepoint_check_flag);
+ // Cannot use a MonitorLockerEx helper here because we have
+ // to drop the Threads_lock first if we wait.
+ ThreadsSMRSupport::smr_delete_lock()->lock_without_safepoint_check();
+ // Set the smr_delete_notify flag after we grab smr_delete_lock
+ // and before we scan hazard ptrs because we're doing
+ // double-check locking in release_stable_list().
+ ThreadsSMRSupport::set_smr_delete_notify();
+
+ if (!is_a_protected_JavaThread(thread)) {
+ // This is the common case.
+ ThreadsSMRSupport::clear_smr_delete_notify();
+ ThreadsSMRSupport::smr_delete_lock()->unlock();
+ break;
+ }
+ if (!has_logged_once) {
+ has_logged_once = true;
+ log_debug(thread, smr)("tid=" UINTX_FORMAT ": ThreadsSMRSupport::smr_delete: thread=" INTPTR_FORMAT " is not deleted.", os::current_thread_id(), p2i(thread));
+ if (log_is_enabled(Debug, os, thread)) {
+ ScanHazardPtrPrintMatchingThreadsClosure scan_cl(thread);
+ Threads::threads_do(&scan_cl);
+ }
+ }
+ } // We have to drop the Threads_lock to wait or delete the thread
+
+ if (EnableThreadSMRStatistics) {
+ _smr_delete_lock_wait_cnt++;
+ if (_smr_delete_lock_wait_cnt > _smr_delete_lock_wait_max) {
+ _smr_delete_lock_wait_max = _smr_delete_lock_wait_cnt;
+ }
+ }
+ // Wait for a release_stable_list() call before we check again. No
+ // safepoint check, no timeout, and not as suspend equivalent flag
+ // because this JavaThread is not on the Threads list.
+ ThreadsSMRSupport::smr_delete_lock()->wait(Mutex::_no_safepoint_check_flag, 0,
+ !Mutex::_as_suspend_equivalent_flag);
+ if (EnableThreadSMRStatistics) {
+ _smr_delete_lock_wait_cnt--;
+ }
+
+ ThreadsSMRSupport::clear_smr_delete_notify();
+ ThreadsSMRSupport::smr_delete_lock()->unlock();
+ // Retry the whole scenario.
+ }
+
+ if (ThreadLocalHandshakes) {
+ // The thread is about to be deleted so cancel any handshake.
+ thread->cancel_handshake();
+ }
+
+ delete thread;
+ if (EnableThreadSMRStatistics) {
+ timer.stop();
+ uint millis = (uint)timer.milliseconds();
+ ThreadsSMRSupport::inc_smr_deleted_thread_cnt();
+ ThreadsSMRSupport::add_smr_deleted_thread_times(millis);
+ ThreadsSMRSupport::update_smr_deleted_thread_time_max(millis);
+ }
+
+ log_debug(thread, smr)("tid=" UINTX_FORMAT ": ThreadsSMRSupport::smr_delete: thread=" INTPTR_FORMAT " is deleted.", os::current_thread_id(), p2i(thread));
+}
+
+bool ThreadsSMRSupport::smr_delete_notify() {
+ // Use load_acquire() in order to see any updates to _smr_delete_notify
+ // earlier than when smr_delete_lock is grabbed.
+ return (OrderAccess::load_acquire(&_smr_delete_notify) != 0);
+}
+
+// Safely free a ThreadsList after a Threads::add() or Threads::remove().
+// The specified ThreadsList may not get deleted during this call if it
+// is still in-use (referenced by a hazard ptr). Other ThreadsLists
+// in the chain may get deleted by this call if they are no longer in-use.
+void ThreadsSMRSupport::smr_free_list(ThreadsList* threads) {
+ assert_locked_or_safepoint(Threads_lock);
+
+ threads->set_next_list(_smr_to_delete_list);
+ _smr_to_delete_list = threads;
+ if (EnableThreadSMRStatistics) {
+ _smr_to_delete_list_cnt++;
+ if (_smr_to_delete_list_cnt > _smr_to_delete_list_max) {
+ _smr_to_delete_list_max = _smr_to_delete_list_cnt;
+ }
+ }
+
+ // Hash table size should be first power of two higher than twice the length of the ThreadsList
+ int hash_table_size = MIN2((int)get_smr_java_thread_list()->length(), 32) << 1;
+ hash_table_size--;
+ hash_table_size |= hash_table_size >> 1;
+ hash_table_size |= hash_table_size >> 2;
+ hash_table_size |= hash_table_size >> 4;
+ hash_table_size |= hash_table_size >> 8;
+ hash_table_size |= hash_table_size >> 16;
+ hash_table_size++;
+
+ // Gather a hash table of the current hazard ptrs:
+ ThreadScanHashtable *scan_table = new ThreadScanHashtable(hash_table_size);
+ ScanHazardPtrGatherThreadsListClosure scan_cl(scan_table);
+ Threads::threads_do(&scan_cl);
+
+ // Walk through the linked list of pending freeable ThreadsLists
+ // and free the ones that are not referenced from hazard ptrs.
+ ThreadsList* current = _smr_to_delete_list;
+ ThreadsList* prev = NULL;
+ ThreadsList* next = NULL;
+ bool threads_is_freed = false;
+ while (current != NULL) {
+ next = current->next_list();
+ if (!scan_table->has_entry((void*)current)) {
+ // This ThreadsList is not referenced by a hazard ptr.
+ if (prev != NULL) {
+ prev->set_next_list(next);
+ }
+ if (_smr_to_delete_list == current) {
+ _smr_to_delete_list = next;
+ }
+
+ log_debug(thread, smr)("tid=" UINTX_FORMAT ": ThreadsSMRSupport::smr_free_list: threads=" INTPTR_FORMAT " is freed.", os::current_thread_id(), p2i(current));
+ if (current == threads) threads_is_freed = true;
+ delete current;
+ if (EnableThreadSMRStatistics) {
+ _smr_java_thread_list_free_cnt++;
+ _smr_to_delete_list_cnt--;
+ }
+ } else {
+ prev = current;
+ }
+ current = next;
+ }
+
+ if (!threads_is_freed) {
+ // Only report "is not freed" on the original call to
+ // smr_free_list() for this ThreadsList.
+ log_debug(thread, smr)("tid=" UINTX_FORMAT ": ThreadsSMRSupport::smr_free_list: threads=" INTPTR_FORMAT " is not freed.", os::current_thread_id(), p2i(threads));
+ }
+
+ delete scan_table;
+}
+
+
+// Debug, logging, and printing stuff at the end:
+
+// Log Threads class SMR info.
+void ThreadsSMRSupport::log_smr_statistics() {
+ LogTarget(Info, thread, smr) log;
+ if (log.is_enabled()) {
+ LogStream out(log);
+ print_smr_info_on(&out);
+ }
+}
+
+// Print Threads class SMR info.
+void ThreadsSMRSupport::print_smr_info_on(outputStream* st) {
+ // Only grab the Threads_lock if we don't already own it
+ // and if we are not reporting an error.
+ MutexLockerEx ml((Threads_lock->owned_by_self() || VMError::is_error_reported()) ? NULL : Threads_lock);
+
+ st->print_cr("Threads class SMR info:");
+ st->print_cr("_smr_java_thread_list=" INTPTR_FORMAT ", length=%u, "
+ "elements={", p2i(_smr_java_thread_list),
+ _smr_java_thread_list->length());
+ print_smr_info_elements_on(st, _smr_java_thread_list);
+ st->print_cr("}");
+ if (_smr_to_delete_list != NULL) {
+ st->print_cr("_smr_to_delete_list=" INTPTR_FORMAT ", length=%u, "
+ "elements={", p2i(_smr_to_delete_list),
+ _smr_to_delete_list->length());
+ print_smr_info_elements_on(st, _smr_to_delete_list);
+ st->print_cr("}");
+ for (ThreadsList *t_list = _smr_to_delete_list->next_list();
+ t_list != NULL; t_list = t_list->next_list()) {
+ st->print("next-> " INTPTR_FORMAT ", length=%u, "
+ "elements={", p2i(t_list), t_list->length());
+ print_smr_info_elements_on(st, t_list);
+ st->print_cr("}");
+ }
+ }
+ if (!EnableThreadSMRStatistics) {
+ return;
+ }
+ st->print_cr("_smr_java_thread_list_alloc_cnt=" UINT64_FORMAT ","
+ "_smr_java_thread_list_free_cnt=" UINT64_FORMAT ","
+ "_smr_java_thread_list_max=%u, "
+ "_smr_nested_thread_list_max=%u",
+ _smr_java_thread_list_alloc_cnt,
+ _smr_java_thread_list_free_cnt,
+ _smr_java_thread_list_max,
+ _smr_nested_thread_list_max);
+ if (_smr_tlh_cnt > 0) {
+ st->print_cr("_smr_tlh_cnt=%u"
+ ", _smr_tlh_times=%u"
+ ", avg_smr_tlh_time=%0.2f"
+ ", _smr_tlh_time_max=%u",
+ _smr_tlh_cnt, _smr_tlh_times,
+ ((double) _smr_tlh_times / _smr_tlh_cnt),
+ _smr_tlh_time_max);
+ }
+ if (_smr_deleted_thread_cnt > 0) {
+ st->print_cr("_smr_deleted_thread_cnt=%u"
+ ", _smr_deleted_thread_times=%u"
+ ", avg_smr_deleted_thread_time=%0.2f"
+ ", _smr_deleted_thread_time_max=%u",
+ _smr_deleted_thread_cnt, _smr_deleted_thread_times,
+ ((double) _smr_deleted_thread_times / _smr_deleted_thread_cnt),
+ _smr_deleted_thread_time_max);
+ }
+ st->print_cr("_smr_delete_lock_wait_cnt=%u, _smr_delete_lock_wait_max=%u",
+ _smr_delete_lock_wait_cnt, _smr_delete_lock_wait_max);
+ st->print_cr("_smr_to_delete_list_cnt=%u, _smr_to_delete_list_max=%u",
+ _smr_to_delete_list_cnt, _smr_to_delete_list_max);
+}
+
+// Print ThreadsList elements (4 per line).
+void ThreadsSMRSupport::print_smr_info_elements_on(outputStream* st,
+ ThreadsList* t_list) {
+ uint cnt = 0;
+ JavaThreadIterator jti(t_list);
+ for (JavaThread *jt = jti.first(); jt != NULL; jt = jti.next()) {
+ st->print(INTPTR_FORMAT, p2i(jt));
+ if (cnt < t_list->length() - 1) {
+ // Separate with comma or comma-space except for the last one.
+ if (((cnt + 1) % 4) == 0) {
+ // Four INTPTR_FORMAT fit on an 80 column line so end the
+ // current line with just a comma.
+ st->print_cr(",");
+ } else {
+ // Not the last one on the current line so use comma-space:
+ st->print(", ");
+ }
+ } else {
+ // Last one so just end the current line.
+ st->cr();
+ }
+ cnt++;
+ }
+}
--- a/src/hotspot/share/runtime/threadSMR.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/runtime/threadSMR.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -77,11 +77,77 @@
// longer protected by a ThreadsListHandle.
+// SMR Support for the Threads class.
+//
+class ThreadsSMRSupport : AllStatic {
+ // The coordination between ThreadsSMRSupport::release_stable_list() and
+ // ThreadsSMRSupport::smr_delete() uses the smr_delete_lock in order to
+ // reduce the traffic on the Threads_lock.
+ static Monitor* _smr_delete_lock;
+ // The '_cnt', '_max' and '_times" fields are enabled via
+ // -XX:+EnableThreadSMRStatistics (see thread.cpp for a
+ // description about each field):
+ static uint _smr_delete_lock_wait_cnt;
+ static uint _smr_delete_lock_wait_max;
+ // The smr_delete_notify flag is used for proper double-check
+ // locking in order to reduce the traffic on the smr_delete_lock.
+ static volatile uint _smr_delete_notify;
+ static volatile uint _smr_deleted_thread_cnt;
+ static volatile uint _smr_deleted_thread_time_max;
+ static volatile uint _smr_deleted_thread_times;
+ static ThreadsList* volatile _smr_java_thread_list;
+ static uint64_t _smr_java_thread_list_alloc_cnt;
+ static uint64_t _smr_java_thread_list_free_cnt;
+ static uint _smr_java_thread_list_max;
+ static uint _smr_nested_thread_list_max;
+ static volatile uint _smr_tlh_cnt;
+ static volatile uint _smr_tlh_time_max;
+ static volatile uint _smr_tlh_times;
+ static ThreadsList* _smr_to_delete_list;
+ static uint _smr_to_delete_list_cnt;
+ static uint _smr_to_delete_list_max;
+
+ static ThreadsList *acquire_stable_list_fast_path(Thread *self);
+ static ThreadsList *acquire_stable_list_nested_path(Thread *self);
+ static void add_smr_deleted_thread_times(uint add_value);
+ static void add_smr_tlh_times(uint add_value);
+ static void clear_smr_delete_notify();
+ static void inc_smr_deleted_thread_cnt();
+ static void inc_smr_java_thread_list_alloc_cnt();
+ static void inc_smr_tlh_cnt();
+ static bool is_a_protected_JavaThread(JavaThread *thread);
+ static void release_stable_list_fast_path(Thread *self);
+ static void release_stable_list_nested_path(Thread *self);
+ static void release_stable_list_wake_up(char *log_str);
+ static void set_smr_delete_notify();
+ static Monitor* smr_delete_lock() { return _smr_delete_lock; }
+ static bool smr_delete_notify();
+ static void smr_free_list(ThreadsList* threads);
+ static void update_smr_deleted_thread_time_max(uint new_value);
+ static void update_smr_java_thread_list_max(uint new_value);
+ static void update_smr_tlh_time_max(uint new_value);
+ static ThreadsList* xchg_smr_java_thread_list(ThreadsList* new_list);
+
+ public:
+ static ThreadsList *acquire_stable_list(Thread *self, bool is_ThreadsListSetter);
+ static void add_thread(JavaThread *thread);
+ static ThreadsList* get_smr_java_thread_list();
+ static bool is_a_protected_JavaThread_with_lock(JavaThread *thread);
+ static void release_stable_list(Thread *self);
+ static void remove_thread(JavaThread *thread);
+ static void smr_delete(JavaThread *thread);
+ static void update_smr_tlh_stats(uint millis);
+
+ // Logging and printing support:
+ static void log_smr_statistics();
+ static void print_smr_info_elements_on(outputStream* st, ThreadsList* t_list);
+ static void print_smr_info_on(outputStream* st);
+};
+
// A fast list of JavaThreads.
//
class ThreadsList : public CHeapObj<mtThread> {
- friend class ScanHazardPtrGatherProtectedThreadsClosure;
- friend class Threads;
+ friend class ThreadsSMRSupport; // for next_list(), set_next_list() access
const uint _length;
ThreadsList* _next_list;
@@ -93,6 +159,9 @@
ThreadsList *next_list() const { return _next_list; }
void set_next_list(ThreadsList *list) { _next_list = list; }
+ static ThreadsList* add_thread(ThreadsList* list, JavaThread* java_thread);
+ static ThreadsList* remove_thread(ThreadsList* list, JavaThread* java_thread);
+
public:
ThreadsList(int entries);
~ThreadsList();
@@ -110,9 +179,6 @@
int find_index_of_JavaThread(JavaThread* target);
JavaThread* find_JavaThread_from_java_tid(jlong java_tid) const;
bool includes(const JavaThread * const p) const;
-
- static ThreadsList* add_thread(ThreadsList* list, JavaThread* java_thread);
- static ThreadsList* remove_thread(ThreadsList* list, JavaThread* java_thread);
};
// Linked list of ThreadsLists to support nested ThreadsListHandles.
--- a/src/hotspot/share/runtime/threadSMR.inline.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/runtime/threadSMR.inline.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -52,6 +52,32 @@
}
}
+// These three inlines are private to ThreadsSMRSupport, but
+// they are called by public inline update_smr_tlh_stats() below:
+
+inline void ThreadsSMRSupport::add_smr_tlh_times(uint add_value) {
+ Atomic::add(add_value, &_smr_tlh_times);
+}
+
+inline void ThreadsSMRSupport::inc_smr_tlh_cnt() {
+ Atomic::inc(&_smr_tlh_cnt);
+}
+
+inline void ThreadsSMRSupport::update_smr_tlh_time_max(uint new_value) {
+ while (true) {
+ uint cur_value = _smr_tlh_time_max;
+ if (new_value <= cur_value) {
+ // No need to update max value so we're done.
+ break;
+ }
+ if (Atomic::cmpxchg(new_value, &_smr_tlh_time_max, cur_value) == cur_value) {
+ // Updated max value so we're done. Otherwise try it all again.
+ break;
+ }
+ }
+}
+
+
inline ThreadsList* ThreadsListSetter::list() {
ThreadsList *ret = _target->get_threads_hazard_ptr();
assert(ret != NULL, "hazard ptr should be set");
@@ -59,4 +85,19 @@
return ret;
}
+inline ThreadsList* ThreadsSMRSupport::get_smr_java_thread_list() {
+ return (ThreadsList*)OrderAccess::load_acquire(&_smr_java_thread_list);
+}
+
+inline bool ThreadsSMRSupport::is_a_protected_JavaThread_with_lock(JavaThread *thread) {
+ MutexLockerEx ml(Threads_lock->owned_by_self() ? NULL : Threads_lock);
+ return is_a_protected_JavaThread(thread);
+}
+
+inline void ThreadsSMRSupport::update_smr_tlh_stats(uint millis) {
+ ThreadsSMRSupport::inc_smr_tlh_cnt();
+ ThreadsSMRSupport::add_smr_tlh_times(millis);
+ ThreadsSMRSupport::update_smr_tlh_time_max(millis);
+}
+
#endif // SHARE_VM_RUNTIME_THREADSMR_INLINE_HPP
--- a/src/hotspot/share/runtime/vmStructs.cpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/runtime/vmStructs.cpp Fri Dec 08 23:43:25 2017 +0100
@@ -1991,6 +1991,7 @@
declare_c2_type(MulVDNode, VectorNode) \
declare_c2_type(FmaVDNode, VectorNode) \
declare_c2_type(FmaVFNode, VectorNode) \
+ declare_c2_type(CMoveVFNode, VectorNode) \
declare_c2_type(CMoveVDNode, VectorNode) \
declare_c2_type(MulReductionVDNode, ReductionNode) \
declare_c2_type(DivVFNode, VectorNode) \
--- a/src/hotspot/share/runtime/vm_operations.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/runtime/vm_operations.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -29,6 +29,7 @@
#include "memory/allocation.hpp"
#include "oops/oop.hpp"
#include "runtime/thread.hpp"
+#include "runtime/threadSMR.hpp"
#include "code/codeCache.hpp"
// The following classes are used for operations
--- a/src/hotspot/share/services/threadService.hpp Wed Dec 13 12:45:06 2017 -0800
+++ b/src/hotspot/share/services/threadService.hpp Fri Dec 08 23:43:25 2017 +0100
@@ -33,6 +33,7 @@
#include "runtime/objectMonitor.inline.hpp"
#include "runtime/perfData.hpp"
#include "runtime/thread.hpp"
+#include "runtime/threadSMR.hpp"
#include "services/management.hpp"
#include "services/serviceUtil.hpp"
--- a/src/java.base/share/native/include/jvm.h Wed Dec 13 12:45:06 2017 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1328 +0,0 @@
-/*
- * Copyright (c) 1997, 2017, 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. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * 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 _JAVASOFT_JVM_H_
-#define _JAVASOFT_JVM_H_
-
-#include <sys/stat.h>
-
-#include "jni.h"
-#include "jvm_md.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * This file contains additional functions exported from the VM.
- * These functions are complementary to the standard JNI support.
- * There are three parts to this file:
- *
- * First, this file contains the VM-related functions needed by native
- * libraries in the standard Java API. For example, the java.lang.Object
- * class needs VM-level functions that wait for and notify monitors.
- *
- * Second, this file contains the functions and constant definitions
- * needed by the byte code verifier and class file format checker.
- * These functions allow the verifier and format checker to be written
- * in a VM-independent way.
- *
- * Third, this file contains various I/O and network operations needed
- * by the standard Java I/O and network APIs.
- */
-
-/*
- * Bump the version number when either of the following happens:
- *
- * 1. There is a change in JVM_* functions.
- *
- * 2. There is a change in the contract between VM and Java classes.
- * For example, if the VM relies on a new private field in Thread
- * class.
- */
-
-#define JVM_INTERFACE_VERSION 5
-
-JNIEXPORT jint JNICALL
-JVM_GetInterfaceVersion(void);
-
-/*************************************************************************
- PART 1: Functions for Native Libraries
- ************************************************************************/
-/*
- * java.lang.Object
- */
-JNIEXPORT jint JNICALL
-JVM_IHashCode(JNIEnv *env, jobject obj);
-
-JNIEXPORT void JNICALL
-JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
-
-JNIEXPORT void JNICALL
-JVM_MonitorNotify(JNIEnv *env, jobject obj);
-
-JNIEXPORT void JNICALL
-JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
-
-JNIEXPORT jobject JNICALL
-JVM_Clone(JNIEnv *env, jobject obj);
-
-/*
- * java.lang.String
- */
-JNIEXPORT jstring JNICALL
-JVM_InternString(JNIEnv *env, jstring str);
-
-/*
- * java.lang.System
- */
-JNIEXPORT jlong JNICALL
-JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
-
-JNIEXPORT jlong JNICALL
-JVM_NanoTime(JNIEnv *env, jclass ignored);
-
-JNIEXPORT jlong JNICALL
-JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs);
-
-JNIEXPORT void JNICALL
-JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
- jobject dst, jint dst_pos, jint length);
-
-JNIEXPORT jobject JNICALL
-JVM_InitProperties(JNIEnv *env, jobject p);
-
-
-/*
- * java.lang.Runtime
- */
-JNIEXPORT void JNICALL
-JVM_Halt(jint code);
-
-JNIEXPORT void JNICALL
-JVM_GC(void);
-
-/* Returns the number of real-time milliseconds that have elapsed since the
- * least-recently-inspected heap object was last inspected by the garbage
- * collector.
- *
- * For simple stop-the-world collectors this value is just the time
- * since the most recent collection. For generational collectors it is the
- * time since the oldest generation was most recently collected. Other
- * collectors are free to return a pessimistic estimate of the elapsed time, or
- * simply the time since the last full collection was performed.
- *
- * Note that in the presence of reference objects, a given object that is no
- * longer strongly reachable may have to be inspected multiple times before it
- * can be reclaimed.
- */
-JNIEXPORT jlong JNICALL
-JVM_MaxObjectInspectionAge(void);
-
-JNIEXPORT jlong JNICALL
-JVM_TotalMemory(void);
-
-JNIEXPORT jlong JNICALL
-JVM_FreeMemory(void);
-
-JNIEXPORT jlong JNICALL
-JVM_MaxMemory(void);
-
-JNIEXPORT jint JNICALL
-JVM_ActiveProcessorCount(void);
-
-JNIEXPORT void * JNICALL
-JVM_LoadLibrary(const char *name);
-
-JNIEXPORT void JNICALL
-JVM_UnloadLibrary(void * handle);
-
-JNIEXPORT void * JNICALL
-JVM_FindLibraryEntry(void *handle, const char *name);
-
-JNIEXPORT jboolean JNICALL
-JVM_IsSupportedJNIVersion(jint version);
-
-JNIEXPORT jobjectArray JNICALL
-JVM_GetVmArguments(JNIEnv *env);
-
-
-/*
- * java.lang.Throwable
- */
-JNIEXPORT void JNICALL
-JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
-
-/*
- * java.lang.StackTraceElement
- */
-JNIEXPORT void JNICALL
-JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
-
-JNIEXPORT void JNICALL
-JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
-
-/*
- * java.lang.StackWalker
- */
-enum {
- JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2,
- JVM_STACKWALK_GET_CALLER_CLASS = 0x04,
- JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
- JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
-};
-
-JNIEXPORT jobject JNICALL
-JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
- jint skip_frames, jint frame_count, jint start_index,
- jobjectArray frames);
-
-JNIEXPORT jint JNICALL
-JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
- jint frame_count, jint start_index,
- jobjectArray frames);
-
-/*
- * java.lang.Thread
- */
-JNIEXPORT void JNICALL
-JVM_StartThread(JNIEnv *env, jobject thread);
-
-JNIEXPORT void JNICALL
-JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
-
-JNIEXPORT jboolean JNICALL
-JVM_IsThreadAlive(JNIEnv *env, jobject thread);
-
-JNIEXPORT void JNICALL
-JVM_SuspendThread(JNIEnv *env, jobject thread);
-
-JNIEXPORT void JNICALL
-JVM_ResumeThread(JNIEnv *env, jobject thread);
-
-JNIEXPORT void JNICALL
-JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
-
-JNIEXPORT void JNICALL
-JVM_Yield(JNIEnv *env, jclass threadClass);
-
-JNIEXPORT void JNICALL
-JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
-
-JNIEXPORT jobject JNICALL
-JVM_CurrentThread(JNIEnv *env, jclass threadClass);
-
-JNIEXPORT jint JNICALL
-JVM_CountStackFrames(JNIEnv *env, jobject thread);
-
-JNIEXPORT void JNICALL
-JVM_Interrupt(JNIEnv *env, jobject thread);
-
-JNIEXPORT jboolean JNICALL
-JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
-
-JNIEXPORT jboolean JNICALL
-JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
-
-JNIEXPORT void JNICALL
-JVM_DumpAllStacks(JNIEnv *env, jclass unused);
-
-JNIEXPORT jobjectArray JNICALL
-JVM_GetAllThreads(JNIEnv *env, jclass dummy);
-
-JNIEXPORT void JNICALL
-JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
-
-/* getStackTrace() and getAllStackTraces() method */
-JNIEXPORT jobjectArray JNICALL
-JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
-
-/*
- * java.lang.SecurityManager
- */
-JNIEXPORT jobjectArray JNICALL
-JVM_GetClassContext(JNIEnv *env);
-
-/*
- * java.lang.Package
- */
-JNIEXPORT jstring JNICALL
-JVM_GetSystemPackage(JNIEnv *env, jstring name);
-
-JNIEXPORT jobjectArray JNICALL
-JVM_GetSystemPackages(JNIEnv *env);
-
-/*
- * java.lang.ref.Reference
- */
-JNIEXPORT jobject JNICALL
-JVM_GetAndClearReferencePendingList(JNIEnv *env);
-
-JNIEXPORT jboolean JNICALL
-JVM_HasReferencePendingList(JNIEnv *env);
-
-JNIEXPORT void JNICALL
-JVM_WaitForReferencePendingList(JNIEnv *env);
-
-/*
- * java.io.ObjectInputStream
- */
-JNIEXPORT jobject JNICALL
-JVM_LatestUserDefinedLoader(JNIEnv *env);
-
-/*
- * java.lang.reflect.Array
- */
-JNIEXPORT jint JNICALL
-JVM_GetArrayLength(JNIEnv *env, jobject arr);
-
-JNIEXPORT jobject JNICALL
-JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
-
-JNIEXPORT jvalue JNICALL
-JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
-
-JNIEXPORT void JNICALL
-JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
-
-JNIEXPORT void JNICALL
-JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
- unsigned char vCode);
-
-JNIEXPORT jobject JNICALL
-JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
-
-JNIEXPORT jobject JNICALL
-JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
-
-/*
- * java.lang.Class and java.lang.ClassLoader
- */
-
-#define JVM_CALLER_DEPTH -1
-
-/*
- * Returns the immediate caller class of the native method invoking
- * JVM_GetCallerClass. The Method.invoke and other frames due to
- * reflection machinery are skipped.
- *
- * The depth parameter must be -1 (JVM_DEPTH). The caller is expected
- * to be marked with sun.reflect.CallerSensitive. The JVM will throw
- * an error if it is not marked propertly.
- */
-JNIEXPORT jclass JNICALL
-JVM_GetCallerClass(JNIEnv *env, int depth);
-
-
-/*
- * Find primitive classes
- * utf: class name
- */
-JNIEXPORT jclass JNICALL
-JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
-
-
-/*
- * Find a class from a boot class loader. Returns NULL if class not found.
- */
-JNIEXPORT jclass JNICALL
-JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
-
-/*
- * Find a class from a given class loader. Throws ClassNotFoundException.
- * name: name of class
- * init: whether initialization is done
- * loader: class loader to look up the class. This may not be the same as the caller's
- * class loader.
- * caller: initiating class. The initiating class may be null when a security
- * manager is not installed.
- */
-JNIEXPORT jclass JNICALL
-JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
- jobject loader, jclass caller);
-
-/*
- * Find a class from a given class.
- */
-JNIEXPORT jclass JNICALL
-JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
- jclass from);
-
-/* Find a loaded class cached by the VM */
-JNIEXPORT jclass JNICALL
-JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
-
-/* Define a class */
-JNIEXPORT jclass JNICALL
-JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
- jsize len, jobject pd);
-
-/* Define a class with a source (added in JDK1.5) */
-JNIEXPORT jclass JNICALL
-JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
- const jbyte *buf, jsize len, jobject pd,
- const char *source);
-
-/*
- * Module support funcions
- */
-
-/*
- * Define a module with the specified packages and bind the module to the
- * given class loader.
- * module: module to define
- * is_open: specifies if module is open (currently ignored)
- * version: the module version
- * location: the module location
- * packages: list of packages in the module
- * num_packages: number of packages in the module
- */
-JNIEXPORT void JNICALL
-JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
- jstring location, const char* const* packages, jsize num_packages);
-
-/*
- * Set the boot loader's unnamed module.
- * module: boot loader's unnamed module
- */
-JNIEXPORT void JNICALL
-JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
-
-/*
- * Do a qualified export of a package.
- * from_module: module containing the package to export
- * package: name of the package to export
- * to_module: module to export the package to
- */
-JNIEXPORT void JNICALL
-JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module);
-
-/*
- * Do an export of a package to all unnamed modules.
- * from_module: module containing the package to export
- * package: name of the package to export to all unnamed modules
- */
-JNIEXPORT void JNICALL
-JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package);
-
-/*
- * Do an unqualified export of a package.
- * from_module: module containing the package to export
- * package: name of the package to export
- */
-JNIEXPORT void JNICALL
-JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package);
-
-/*
- * Add a module to the list of modules that a given module can read.
- * from_module: module requesting read access
- * source_module: module that from_module wants to read
- */
-JNIEXPORT void JNICALL
-JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
-
-/*
- * Reflection support functions
- */
-
-JNIEXPORT jstring JNICALL
-JVM_GetClassName(JNIEnv *env, jclass cls);
-
-JNIEXPORT jobjectArray JNICALL
-JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
-
-JNIEXPORT jboolean JNICALL
-JVM_IsInterface(JNIEnv *env, jclass cls);
-
-JNIEXPORT jobjectArray JNICALL
-JVM_GetClassSigners(JNIEnv *env, jclass cls);
-
-JNIEXPORT void JNICALL
-JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
-
-JNIEXPORT jobject JNICALL
-JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
-
-JNIEXPORT jboolean JNICALL
-JVM_IsArrayClass(JNIEnv *env, jclass cls);
-
-JNIEXPORT jboolean JNICALL
-JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
-
-JNIEXPORT jint JNICALL
-JVM_GetClassModifiers(JNIEnv *env, jclass cls);
-
-JNIEXPORT jobjectArray JNICALL
-JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
-
-JNIEXPORT jclass JNICALL
-JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
-
-JNIEXPORT jstring JNICALL
-JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
-
-/* Generics support (JDK 1.5) */
-JNIEXPORT jstring JNICALL
-JVM_GetClassSignature(JNIEnv *env, jclass cls);
-
-/* Annotations support (JDK 1.5) */
-JNIEXPORT jbyteArray JNICALL
-JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
-
-/* Type use annotations support (JDK 1.8) */
-
-JNIEXPORT jbyteArray JNICALL
-JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
-
-JNIEXPORT jbyteArray JNICALL
-JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
-
-JNIEXPORT jbyteArray JNICALL
-JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
-
-/*
- * New (JDK 1.4) reflection implementation
- */
-
-JNIEXPORT jobjectArray JNICALL
-JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
-
-JNIEXPORT jobjectArray JNICALL
-JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
-
-JNIEXPORT jobjectArray JNICALL
-JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
-
-/* Differs from JVM_GetClassModifiers in treatment of inner classes.
- This returns the access flags for the class as specified in the
- class file rather than searching the InnerClasses attribute (if
- present) to find the source-level access flags. Only the values of
- the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
- valid. */
-JNIEXPORT jint JNICALL
-JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
-
-/* The following two reflection routines are still needed due to startup time issues */
-/*
- * java.lang.reflect.Method
- */
-JNIEXPORT jobject JNICALL
-JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
-
-/*
- * java.lang.reflect.Constructor
- */
-JNIEXPORT jobject JNICALL
-JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
-
-/*
- * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
- */
-
-JNIEXPORT jobject JNICALL
-JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
-
-JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
-(JNIEnv *env, jobject unused, jobject jcpool);
-
-JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
-(JNIEnv *env, jobject obj, jobject unused, jint index);
-
-JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
-(JNIEnv *env, jobject obj, jobject unused, jint index);
-
-JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
-(JNIEnv *env, jobject obj, jobject unused, jint index);
-
-JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
-(JNIEnv *env, jobject unused, jobject jcpool, jint index);
-
-/*
- * Parameter reflection
- */
-
-JNIEXPORT jobjectArray JNICALL
-JVM_GetMethodParameters(JNIEnv *env, jobject method);
-
-/*
- * java.security.*
- */
-
-JNIEXPORT jobject JNICALL
-JVM_DoPrivileged(JNIEnv *env, jclass cls,
- jobject action, jobject context, jboolean wrapException);
-
-JNIEXPORT jobject JNICALL
-JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
-
-JNIEXPORT jobject JNICALL
-JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
-
-/*
- * Signal support, used to implement the shutdown sequence. Every VM must
- * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
- * (^C) and the latter for external termination (kill, system shutdown, etc.).
- * Other platform-dependent signal values may also be supported.
- */
-
-JNIEXPORT void * JNICALL
-JVM_RegisterSignal(jint sig, void *handler);
-
-JNIEXPORT jboolean JNICALL
-JVM_RaiseSignal(jint sig);
-
-JNIEXPORT jint JNICALL
-JVM_FindSignal(const char *name);
-
-/*
- * Retrieve the assertion directives for the specified class.
- */
-JNIEXPORT jboolean JNICALL
-JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
-
-/*
- * Retrieve the assertion directives from the VM.
- */
-JNIEXPORT jobject JNICALL
-JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
-
-/*
- * java.util.concurrent.atomic.AtomicLong
- */
-JNIEXPORT jboolean JNICALL
-JVM_SupportsCX8(void);
-
-/*
- * com.sun.dtrace.jsdt support
- */
-
-#define JVM_TRACING_DTRACE_VERSION 1
-
-/*
- * Structure to pass one probe description to JVM
- */
-typedef struct {
- jmethodID method;
- jstring function;
- jstring name;
- void* reserved[4]; // for future use
-} JVM_DTraceProbe;
-
-/**
- * Encapsulates the stability ratings for a DTrace provider field
- */
-typedef struct {
- jint nameStability;
- jint dataStability;
- jint dependencyClass;
-} JVM_DTraceInterfaceAttributes;
-
-/*
- * Structure to pass one provider description to JVM
- */
-typedef struct {
- jstring name;
- JVM_DTraceProbe* probes;
- jint probe_count;
- JVM_DTraceInterfaceAttributes providerAttributes;
- JVM_DTraceInterfaceAttributes moduleAttributes;
- JVM_DTraceInterfaceAttributes functionAttributes;
- JVM_DTraceInterfaceAttributes nameAttributes;
- JVM_DTraceInterfaceAttributes argsAttributes;
- void* reserved[4]; // for future use
-} JVM_DTraceProvider;
-
-/*
- * Get the version number the JVM was built with
- */
-JNIEXPORT jint JNICALL
-JVM_DTraceGetVersion(JNIEnv* env);
-
-/*
- * Register new probe with given signature, return global handle
- *
- * The version passed in is the version that the library code was
- * built with.
- */
-JNIEXPORT jlong JNICALL
-JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
- jint providers_count, JVM_DTraceProvider* providers);
-
-/*
- * Check JSDT probe
- */
-JNIEXPORT jboolean JNICALL
-JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
-
-/*
- * Destroy custom DOF
- */
-JNIEXPORT void JNICALL
-JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
-
-/*
- * Check to see if DTrace is supported by OS
- */
-JNIEXPORT jboolean JNICALL
-JVM_DTraceIsSupported(JNIEnv* env);
-
-/*************************************************************************
- PART 2: Support for the Verifier and Class File Format Checker
- ************************************************************************/
-/*
- * Return the class name in UTF format. The result is valid
- * until JVM_ReleaseUTf is called.
- *
- * The caller must treat the string as a constant and not modify it
- * in any way.
- */
-JNIEXPORT const char * JNICALL
-JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
-
-/*
- * Returns the constant pool types in the buffer provided by "types."
- */
-JNIEXPORT void JNICALL
-JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
-
-/*
- * Returns the number of Constant Pool entries.
- */
-JNIEXPORT jint JNICALL
-JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
-
-/*
- * Returns the number of *declared* fields or methods.
- */
-JNIEXPORT jint JNICALL
-JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
-
-JNIEXPORT jint JNICALL
-JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
-
-/*
- * Returns the CP indexes of exceptions raised by a given method.
- * Places the result in the given buffer.
- *
- * The method is identified by method_index.
- */
-JNIEXPORT void JNICALL
-JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
- unsigned short *exceptions);
-/*
- * Returns the number of exceptions raised by a given method.
- * The method is identified by method_index.
- */
-JNIEXPORT jint JNICALL
-JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
-
-/*
- * Returns the byte code sequence of a given method.
- * Places the result in the given buffer.
- *
- * The method is identified by method_index.
- */
-JNIEXPORT void JNICALL
-JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
- unsigned char *code);
-
-/*
- * Returns the length of the byte code sequence of a given method.
- * The method is identified by method_index.
- */
-JNIEXPORT jint JNICALL
-JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
-
-/*
- * A structure used to a capture exception table entry in a Java method.
- */
-typedef struct {
- jint start_pc;
- jint end_pc;
- jint handler_pc;
- jint catchType;
-} JVM_ExceptionTableEntryType;
-
-/*
- * Returns the exception table entry at entry_index of a given method.
- * Places the result in the given buffer.
- *
- * The method is identified by method_index.
- */
-JNIEXPORT void JNICALL
-JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
- jint entry_index,
- JVM_ExceptionTableEntryType *entry);
-
-/*
- * Returns the length of the exception table of a given method.
- * The method is identified by method_index.
- */
-JNIEXPORT jint JNICALL
-JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
-
-/*
- * Returns the modifiers of a given field.
- * The field is identified by field_index.
- */
-JNIEXPORT jint JNICALL
-JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
-
-/*
- * Returns the modifiers of a given method.
- * The method is identified by method_index.
- */
-JNIEXPORT jint JNICALL
-JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
-
-/*
- * Returns the number of local variables of a given method.
- * The method is identified by method_index.
- */
-JNIEXPORT jint JNICALL
-JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
-
-/*
- * Returns the number of arguments (including this pointer) of a given method.
- * The method is identified by method_index.
- */
-JNIEXPORT jint JNICALL
-JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
-
-/*
- * Returns the maximum amount of stack (in words) used by a given method.
- * The method is identified by method_index.
- */
-JNIEXPORT jint JNICALL
-JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
-
-/*
- * Is a given method a constructor.
- * The method is identified by method_index.
- */
-JNIEXPORT jboolean JNICALL
-JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
-
-/*
- * Is the given method generated by the VM.
- * The method is identified by method_index.
- */
-JNIEXPORT jboolean JNICALL
-JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
-
-/*
- * Returns the name of a given method in UTF format.
- * The result remains valid until JVM_ReleaseUTF is called.
- *
- * The caller must treat the string as a constant and not modify it
- * in any way.
- */
-JNIEXPORT const char * JNICALL
-JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
-
-/*
- * Returns the signature of a given method in UTF format.
- * The result remains valid until JVM_ReleaseUTF is called.
- *
- * The caller must treat the string as a constant and not modify it
- * in any way.
- */
-JNIEXPORT const char * JNICALL
-JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
-
-/*
- * Returns the name of the field referred to at a given constant pool
- * index.
- *
- * The result is in UTF format and remains valid until JVM_ReleaseUTF
- * is called.
- *
- * The caller must treat the string as a constant and not modify it
- * in any way.
- */
-JNIEXPORT const char * JNICALL
-JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
-
-/*
- * Returns the name of the method referred to at a given constant pool
- * index.
- *
- * The result is in UTF format and remains valid until JVM_ReleaseUTF
- * is called.
- *
- * The caller must treat the string as a constant and not modify it
- * in any way.
- */
-JNIEXPORT const char * JNICALL
-JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
-
-/*
- * Returns the signature of the method referred to at a given constant pool
- * index.
- *
- * The result is in UTF format and remains valid until JVM_ReleaseUTF
- * is called.
- *
- * The caller must treat the string as a constant and not modify it
- * in any way.
- */
-JNIEXPORT const char * JNICALL
-JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
-
-/*
- * Returns the signature of the field referred to at a given constant pool
- * index.
- *
- * The result is in UTF format and remains valid until JVM_ReleaseUTF
- * is called.
- *
- * The caller must treat the string as a constant and not modify it
- * in any way.
- */
-JNIEXPORT const char * JNICALL
-JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
-
-/*
- * Returns the class name referred to at a given constant pool index.
- *
- * The result is in UTF format and remains valid until JVM_ReleaseUTF
- * is called.
- *
- * The caller must treat the string as a constant and not modify it
- * in any way.
- */
-JNIEXPORT const char * JNICALL
-JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
-
-/*
- * Returns the class name referred to at a given constant pool index.
- *
- * The constant pool entry must refer to a CONSTANT_Fieldref.
- *
- * The result is in UTF format and remains valid until JVM_ReleaseUTF
- * is called.
- *
- * The caller must treat the string as a constant and not modify it
- * in any way.
- */
-JNIEXPORT const char * JNICALL
-JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
-
-/*
- * Returns the class name referred to at a given constant pool index.
- *
- * The constant pool entry must refer to CONSTANT_Methodref or
- * CONSTANT_InterfaceMethodref.
- *
- * The result is in UTF format and remains valid until JVM_ReleaseUTF
- * is called.
- *
- * The caller must treat the string as a constant and not modify it
- * in any way.
- */
-JNIEXPORT const char * JNICALL
-JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
-
-/*
- * Returns the modifiers of a field in calledClass. The field is
- * referred to in class cb at constant pool entry index.
- *
- * The caller must treat the string as a constant and not modify it
- * in any way.
- *
- * Returns -1 if the field does not exist in calledClass.
- */
-JNIEXPORT jint JNICALL
-JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
-
-/*
- * Returns the modifiers of a method in calledClass. The method is
- * referred to in class cb at constant pool entry index.
- *
- * Returns -1 if the method does not exist in calledClass.
- */
-JNIEXPORT jint JNICALL
-JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
-
-/*
- * Releases the UTF string obtained from the VM.
- */
-JNIEXPORT void JNICALL
-JVM_ReleaseUTF(const char *utf);
-
-/*
- * Compare if two classes are in the same package.
- */
-JNIEXPORT jboolean JNICALL
-JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
-
-/* Get classfile constants */
-#include "classfile_constants.h"
-
-/*
- * A function defined by the byte-code verifier and called by the VM.
- * This is not a function implemented in the VM.
- *
- * Returns JNI_FALSE if verification fails. A detailed error message
- * will be places in msg_buf, whose length is specified by buf_len.
- */
-typedef jboolean (*verifier_fn_t)(JNIEnv *env,
- jclass cb,
- char * msg_buf,
- jint buf_len);
-
-
-/*
- * Support for a VM-independent class format checker.
- */
-typedef struct {
- unsigned long code; /* byte code */
- unsigned long excs; /* exceptions */
- unsigned long etab; /* catch table */
- unsigned long lnum; /* line number */
- unsigned long lvar; /* local vars */
-} method_size_info;
-
-typedef struct {
- unsigned int constants; /* constant pool */
- unsigned int fields;
- unsigned int methods;
- unsigned int interfaces;
- unsigned int fields2; /* number of static 2-word fields */
- unsigned int innerclasses; /* # of records in InnerClasses attr */
-
- method_size_info clinit; /* memory used in clinit */
- method_size_info main; /* used everywhere else */
-} class_size_info;
-
-/*
- * Functions defined in libjava.so to perform string conversions.
- *
- */
-
-typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
-
-typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
-
-/* This is the function defined in libjava.so that performs class
- * format checks. This functions fills in size information about
- * the class file and returns:
- *
- * 0: good
- * -1: out of memory
- * -2: bad format
- * -3: unsupported version
- * -4: bad class name
- */
-
-typedef jint (*check_format_fn_t)(char *class_name,
- unsigned char *data,
- unsigned int data_size,
- class_size_info *class_size,
- char *message_buffer,
- jint buffer_length,
- jboolean measure_only,
- jboolean check_relaxed);
-
-#define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
- JVM_ACC_FINAL | \
- JVM_ACC_SUPER | \
- JVM_ACC_INTERFACE | \
- JVM_ACC_ABSTRACT | \
- JVM_ACC_ANNOTATION | \
- JVM_ACC_ENUM | \
- JVM_ACC_SYNTHETIC)
-
-#define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
- JVM_ACC_PRIVATE | \
- JVM_ACC_PROTECTED | \
- JVM_ACC_STATIC | \
- JVM_ACC_FINAL | \
- JVM_ACC_VOLATILE | \
- JVM_ACC_TRANSIENT | \
- JVM_ACC_ENUM | \
- JVM_ACC_SYNTHETIC)
-
-#define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
- JVM_ACC_PRIVATE | \
- JVM_ACC_PROTECTED | \
- JVM_ACC_STATIC | \
- JVM_ACC_FINAL | \
- JVM_ACC_SYNCHRONIZED | \
- JVM_ACC_BRIDGE | \
- JVM_ACC_VARARGS | \
- JVM_ACC_NATIVE | \
- JVM_ACC_ABSTRACT | \
- JVM_ACC_STRICT | \
- JVM_ACC_SYNTHETIC)
-
-/*
- * This is the function defined in libjava.so to perform path
- * canonicalization. VM call this function before opening jar files
- * to load system classes.
- *
- */
-
-typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
-
-/*************************************************************************
- PART 3: I/O and Network Support
- ************************************************************************/
-
-/*
- * Convert a pathname into native format. This function does syntactic
- * cleanup, such as removing redundant separator characters. It modifies
- * the given pathname string in place.
- */
-JNIEXPORT char * JNICALL
-JVM_NativePath(char *);
-
-/*
- * The standard printing functions supported by the Java VM. (Should they
- * be renamed to JVM_* in the future?
- */
-
-/* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
- * respectively, with the following differences:
- * - The string written to str is always zero-terminated, also in case of
- * truncation (count is too small to hold the result string), unless count
- * is 0. In case of truncation count-1 characters are written and '\0'
- * appendend.
- * - If count is too small to hold the whole string, -1 is returned across
- * all platforms. */
-
-JNIEXPORT int
-jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
-
-JNIEXPORT int
-jio_snprintf(char *str, size_t count, const char *fmt, ...);
-
-JNIEXPORT int
-jio_fprintf(FILE *, const char *fmt, ...);
-
-JNIEXPORT int
-jio_vfprintf(FILE *, const char *fmt, va_list args);
-
-
-JNIEXPORT void * JNICALL
-JVM_RawMonitorCreate(void);
-
-JNIEXPORT void JNICALL
-JVM_RawMonitorDestroy(void *mon);
-
-JNIEXPORT jint JNICALL
-JVM_RawMonitorEnter(void *mon);
-
-JNIEXPORT void JNICALL
-JVM_RawMonitorExit(void *mon);
-
-/*
- * java.lang.management support
- */
-JNIEXPORT void* JNICALL
-JVM_GetManagement(jint version);
-
-/*
- * com.sun.tools.attach.VirtualMachine support
- *
- * Initialize the agent properties with the properties maintained in the VM.
- */
-JNIEXPORT jobject JNICALL
-JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
-
-JNIEXPORT jstring JNICALL
-JVM_GetTemporaryDirectory(JNIEnv *env);
-
-/* Generics reflection support.
- *
- * Returns information about the given class's EnclosingMethod
- * attribute, if present, or null if the class had no enclosing
- * method.
- *
- * If non-null, the returned array contains three elements. Element 0
- * is the java.lang.Class of which the enclosing method is a member,
- * and elements 1 and 2 are the java.lang.Strings for the enclosing
- * method's name and descriptor, respectively.
- */
-JNIEXPORT jobjectArray JNICALL
-JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
-
-/* =========================================================================
- * The following defines a private JVM interface that the JDK can query
- * for the JVM version and capabilities. sun.misc.Version defines
- * the methods for getting the VM version and its capabilities.
- *
- * When a new bit is added, the following should be updated to provide
- * access to the new capability:
- * HS: JVM_GetVersionInfo and Abstract_VM_Version class
- * SDK: Version class
- *
- * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
- * JVM to query for the JDK version and capabilities.
- *
- * When a new bit is added, the following should be updated to provide
- * access to the new capability:
- * HS: JDK_Version class
- * SDK: JDK_GetVersionInfo0
- *
- * ==========================================================================
- */
-typedef struct {
- unsigned int jvm_version; /* Encoded $VNUM as specified by JEP-223 */
- unsigned int patch_version : 8; /* JEP-223 patch version */
- unsigned int reserved3 : 8;
- unsigned int reserved1 : 16;
- unsigned int reserved2;
-
- /* The following bits represents JVM supports that JDK has dependency on.
- * JDK can use these bits to determine which JVM version
- * and support it has to maintain runtime compatibility.
- *
- * When a new bit is added in a minor or update release, make sure
- * the new bit is also added in the main/baseline.
- */
- unsigned int is_attach_supported : 1;
- unsigned int : 31;
- unsigned int : 32;
- unsigned int : 32;
-} jvm_version_info;
-
-#define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
-#define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
-#define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
-#define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
-
-JNIEXPORT void JNICALL
-JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
-
-typedef struct {
- unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */
- unsigned int patch_version : 8; /* JEP-223 patch version */
- unsigned int reserved3 : 8;
- unsigned int reserved1 : 16;
- unsigned int reserved2;
-
- /* The following bits represents new JDK supports that VM has dependency on.
- * VM implementation can use these bits to determine which JDK version
- * and support it has to maintain runtime compatibility.
- *
- * When a new bit is added in a minor or update release, make sure
- * the new bit is also added in the main/baseline.
- */
- unsigned int thread_park_blocker : 1;
- unsigned int post_vm_init_hook_enabled : 1;
- unsigned int pending_list_uses_discovered_field : 1;
- unsigned int : 29;
- unsigned int : 32;
- unsigned int : 32;
-} jdk_version_info;
-
-#define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
-#define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
-#define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
-#define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
-
-/*
- * This is the function JDK_GetVersionInfo0 defined in libjava.so
- * that is dynamically looked up by JVM.
- */
-typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
-
-/*
- * This structure is used by the launcher to get the default thread
- * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
- * version of 1.1. As it is not supported otherwise, it has been removed
- * from jni.h
- */
-typedef struct JDK1_1InitArgs {
- jint version;
-
- char **properties;
- jint checkSource;
- jint nativeStackSize;
- jint javaStackSize;
- jint minHeapSize;
- jint maxHeapSize;
- jint verifyMode;
- char *classpath;
-
- jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
- void (JNICALL *exit)(jint code);
- void (JNICALL *abort)(void);
-
- jint enableClassGC;
- jint enableVerboseGC;
- jint disableAsyncGC;
- jint verbose;
- jboolean debugging;
- jint debugPort;
-} JDK1_1InitArgs;
-
-
-#ifdef __cplusplus
-} /* extern "C" */
-
-#endif /* __cplusplus */
-
-#endif /* !_JAVASOFT_JVM_H_ */
--- a/src/java.base/unix/native/include/jvm_md.h Wed Dec 13 12:45:06 2017 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,100 +0,0 @@
-/*
- * 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
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * 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 _JAVASOFT_JVM_MD_H_
-#define _JAVASOFT_JVM_MD_H_
-
-/*
- * This file is currently collecting system-specific dregs for the
- * JNI conversion, which should be sorted out later.
- */
-
-#include <dirent.h> /* For DIR */
-#include <sys/param.h> /* For MAXPATHLEN */
-#include <unistd.h> /* For F_OK, R_OK, W_OK */
-#include <stddef.h> /* For ptrdiff_t */
-#include <stdint.h> /* For uintptr_t */
-
-#define JNI_ONLOAD_SYMBOLS {"JNI_OnLoad"}
-#define JNI_ONUNLOAD_SYMBOLS {"JNI_OnUnload"}
-#define JVM_ONLOAD_SYMBOLS {"JVM_OnLoad"}
-#define AGENT_ONLOAD_SYMBOLS {"Agent_OnLoad"}
-#define AGENT_ONUNLOAD_SYMBOLS {"Agent_OnUnload"}
-#define AGENT_ONATTACH_SYMBOLS {"Agent_OnAttach"}
-
-#define JNI_LIB_PREFIX "lib"
-#ifdef __APPLE__
-#define JNI_LIB_SUFFIX ".dylib"
-#define VERSIONED_JNI_LIB_NAME(NAME, VERSION) JNI_LIB_PREFIX NAME "." VERSION JNI_LIB_SUFFIX
-#else
-#define JNI_LIB_SUFFIX ".so"
-#define VERSIONED_JNI_LIB_NAME(NAME, VERSION) JNI_LIB_PREFIX NAME JNI_LIB_SUFFIX "." VERSION
-#endif
-#define JNI_LIB_NAME(NAME) JNI_LIB_PREFIX NAME JNI_LIB_SUFFIX
-
-#if defined(AIX) || defined(SOLARIS)
-#define JVM_MAXPATHLEN MAXPATHLEN
-#else
-// Hack: MAXPATHLEN is 4095 on some Linux and 4096 on others. This may
-// cause problems if JVM and the rest of JDK are built on different
-// Linux releases. Here we define JVM_MAXPATHLEN to be MAXPATHLEN + 1,
-// so buffers declared in VM are always >= 4096.
-#define JVM_MAXPATHLEN MAXPATHLEN + 1
-#endif
-
-#define JVM_R_OK R_OK
-#define JVM_W_OK W_OK
-#define JVM_X_OK X_OK
-#define JVM_F_OK F_OK
-
-/*
- * File I/O
- */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <signal.h>
-
-/* Signals */
-
-#include <sys/socket.h> // for socklen_t
-
-#define JVM_SIGINT SIGINT
-#define JVM_SIGTERM SIGTERM
-
-#define BREAK_SIGNAL SIGQUIT /* Thread dumping support. */
-#ifdef SOLARIS
-#define ASYNC_SIGNAL SIGJVM2 /* Event-based suspend/resume support */
-#endif // SOLARIS
-#define SHUTDOWN1_SIGNAL SIGHUP /* Shutdown Hooks support. */
-#define SHUTDOWN2_SIGNAL SIGINT
-#define SHUTDOWN3_SIGNAL SIGTERM
-
-/* With 1.4.1 libjsig added versioning: used in os_solaris.cpp and jsig.c */
-#define JSIG_VERSION_1_4_1 0x30140100
-
-#endif /* !_JAVASOFT_JVM_MD_H_ */
--- a/src/java.base/windows/native/include/jvm_md.h Wed Dec 13 12:45:06 2017 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,102 +0,0 @@
-/*
- * Copyright (c) 1997, 2008, 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. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * 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 _JAVASOFT_JVM_MD_H_
-#define _JAVASOFT_JVM_MD_H_
-
-/*
- * This file is currently collecting system-specific dregs for the
- * JNI conversion, which should be sorted out later.
- */
-
-#include <windows.h>
-#include <windef.h>
-#include <winbase.h>
-
-#include "jni.h"
-
-typedef int socklen_t;
-
-#define JNI_ONLOAD_SYMBOLS {"_JNI_OnLoad@8", "JNI_OnLoad"}
-#define JNI_ONUNLOAD_SYMBOLS {"_JNI_OnUnload@8", "JNI_OnUnload"}
-#define JVM_ONLOAD_SYMBOLS {"_JVM_OnLoad@12", "JVM_OnLoad"}
-#define AGENT_ONLOAD_SYMBOLS {"_Agent_OnLoad@12", "Agent_OnLoad"}
-#define AGENT_ONUNLOAD_SYMBOLS {"_Agent_OnUnload@4", "Agent_OnUnload"}
-#define AGENT_ONATTACH_SYMBOLS {"_Agent_OnAttach@12", "Agent_OnAttach"}
-
-#define JNI_LIB_PREFIX ""
-#define JNI_LIB_SUFFIX ".dll"
-
-struct dirent {
- char d_name[MAX_PATH];
-};
-
-typedef struct {
- struct dirent dirent;
- char *path;
- HANDLE handle;
- WIN32_FIND_DATA find_data;
-} DIR;
-
-#include <stddef.h> /* For uintptr_t */
-#include <stdlib.h>
-
-#define JVM_MAXPATHLEN _MAX_PATH
-
-#define JVM_R_OK 4
-#define JVM_W_OK 2
-#define JVM_X_OK 1
-#define JVM_F_OK 0
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-JNIEXPORT void * JNICALL
-JVM_GetThreadInterruptEvent();
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif /* __cplusplus */
-
-/*
- * File I/O
- */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <signal.h>
-
-/* Signals */
-
-#define JVM_SIGINT SIGINT
-#define JVM_SIGTERM SIGTERM
-
-#define SHUTDOWN1_SIGNAL SIGINT /* Shutdown Hooks support. */
-#define SHUTDOWN2_SIGNAL SIGTERM
-
-#endif /* !_JAVASOFT_JVM_MD_H_ */
--- a/src/java.management/share/native/include/jmm.h Wed Dec 13 12:45:06 2017 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,345 +0,0 @@
-/*
- * Copyright (c) 2003, 2017, 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. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * 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 _JAVA_JMM_H_
-#define _JAVA_JMM_H_
-
-/*
- * This is a private interface used by JDK for JVM monitoring
- * and management.
- *
- * Bump the version number when either of the following happens:
- *
- * 1. There is a change in functions in JmmInterface.
- *
- * 2. There is a change in the contract between VM and Java classes.
- */
-
-#include "jni.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-enum {
- JMM_VERSION_1 = 0x20010000,
- JMM_VERSION_1_0 = 0x20010000,
- JMM_VERSION_1_1 = 0x20010100, // JDK 6
- JMM_VERSION_1_2 = 0x20010200, // JDK 7
- JMM_VERSION_1_2_1 = 0x20010201, // JDK 7 GA
- JMM_VERSION_1_2_2 = 0x20010202,
- JMM_VERSION_2 = 0x20020000, // JDK 10
- JMM_VERSION = 0x20020000
-};
-
-typedef struct {
- unsigned int isLowMemoryDetectionSupported : 1;
- unsigned int isCompilationTimeMonitoringSupported : 1;
- unsigned int isThreadContentionMonitoringSupported : 1;
- unsigned int isCurrentThreadCpuTimeSupported : 1;
- unsigned int isOtherThreadCpuTimeSupported : 1;
- unsigned int isObjectMonitorUsageSupported : 1;
- unsigned int isSynchronizerUsageSupported : 1;
- unsigned int isThreadAllocatedMemorySupported : 1;
- unsigned int isRemoteDiagnosticCommandsSupported : 1;
- unsigned int : 22;
-} jmmOptionalSupport;
-
-typedef enum {
- JMM_CLASS_LOADED_COUNT = 1, /* Total number of loaded classes */
- JMM_CLASS_UNLOADED_COUNT = 2, /* Total number of unloaded classes */
- JMM_THREAD_TOTAL_COUNT = 3, /* Total number of threads that have been started */
- JMM_THREAD_LIVE_COUNT = 4, /* Current number of live threads */
- JMM_THREAD_PEAK_COUNT = 5, /* Peak number of live threads */
- JMM_THREAD_DAEMON_COUNT = 6, /* Current number of daemon threads */
- JMM_JVM_INIT_DONE_TIME_MS = 7, /* Time when the JVM finished initialization */
- JMM_COMPILE_TOTAL_TIME_MS = 8, /* Total accumulated time spent in compilation */
- JMM_GC_TIME_MS = 9, /* Total accumulated time spent in collection */
- JMM_GC_COUNT = 10, /* Total number of collections */
- JMM_JVM_UPTIME_MS = 11, /* The JVM uptime in milliseconds */
-
- JMM_INTERNAL_ATTRIBUTE_INDEX = 100,
- JMM_CLASS_LOADED_BYTES = 101, /* Number of bytes loaded instance classes */
- JMM_CLASS_UNLOADED_BYTES = 102, /* Number of bytes unloaded instance classes */
- JMM_TOTAL_CLASSLOAD_TIME_MS = 103, /* Accumulated VM class loader time (TraceClassLoadingTime) */
- JMM_VM_GLOBAL_COUNT = 104, /* Number of VM internal flags */
- JMM_SAFEPOINT_COUNT = 105, /* Total number of safepoints */
- JMM_TOTAL_SAFEPOINTSYNC_TIME_MS = 106, /* Accumulated time spent getting to safepoints */
- JMM_TOTAL_STOPPED_TIME_MS = 107, /* Accumulated time spent at safepoints */
- JMM_TOTAL_APP_TIME_MS = 108, /* Accumulated time spent in Java application */
- JMM_VM_THREAD_COUNT = 109, /* Current number of VM internal threads */
- JMM_CLASS_INIT_TOTAL_COUNT = 110, /* Number of classes for which initializers were run */
- JMM_CLASS_INIT_TOTAL_TIME_MS = 111, /* Accumulated time spent in class initializers */
- JMM_METHOD_DATA_SIZE_BYTES = 112, /* Size of method data in memory */
- JMM_CLASS_VERIFY_TOTAL_TIME_MS = 113, /* Accumulated time spent in class verifier */
- JMM_SHARED_CLASS_LOADED_COUNT = 114, /* Number of shared classes loaded */
- JMM_SHARED_CLASS_UNLOADED_COUNT = 115, /* Number of shared classes unloaded */
- JMM_SHARED_CLASS_LOADED_BYTES = 116, /* Number of bytes loaded shared classes */
- JMM_SHARED_CLASS_UNLOADED_BYTES = 117, /* Number of bytes unloaded shared classes */
-
- JMM_OS_ATTRIBUTE_INDEX = 200,
- JMM_OS_PROCESS_ID = 201, /* Process id of the JVM */
- JMM_OS_MEM_TOTAL_PHYSICAL_BYTES = 202, /* Physical memory size */
-
- JMM_GC_EXT_ATTRIBUTE_INFO_SIZE = 401 /* the size of the GC specific attributes for a given GC memory manager */
-} jmmLongAttribute;
-
-typedef enum {
- JMM_VERBOSE_GC = 21,
- JMM_VERBOSE_CLASS = 22,
- JMM_THREAD_CONTENTION_MONITORING = 23,
- JMM_THREAD_CPU_TIME = 24,
- JMM_THREAD_ALLOCATED_MEMORY = 25
-} jmmBoolAttribute;
-
-
-enum {
- JMM_THREAD_STATE_FLAG_SUSPENDED = 0x00100000,
- JMM_THREAD_STATE_FLAG_NATIVE = 0x00400000
-};
-
-#define JMM_THREAD_STATE_FLAG_MASK 0xFFF00000
-
-typedef enum {
- JMM_STAT_PEAK_THREAD_COUNT = 801,
- JMM_STAT_THREAD_CONTENTION_COUNT = 802,
- JMM_STAT_THREAD_CONTENTION_TIME = 803,
- JMM_STAT_THREAD_CONTENTION_STAT = 804,
- JMM_STAT_PEAK_POOL_USAGE = 805,
- JMM_STAT_GC_STAT = 806
-} jmmStatisticType;
-
-typedef enum {
- JMM_USAGE_THRESHOLD_HIGH = 901,
- JMM_USAGE_THRESHOLD_LOW = 902,
- JMM_COLLECTION_USAGE_THRESHOLD_HIGH = 903,
- JMM_COLLECTION_USAGE_THRESHOLD_LOW = 904
-} jmmThresholdType;
-
-/* Should match what is allowed in globals.hpp */
-typedef enum {
- JMM_VMGLOBAL_TYPE_UNKNOWN = 0,
- JMM_VMGLOBAL_TYPE_JBOOLEAN = 1,
- JMM_VMGLOBAL_TYPE_JSTRING = 2,
- JMM_VMGLOBAL_TYPE_JLONG = 3,
- JMM_VMGLOBAL_TYPE_JDOUBLE = 4
-} jmmVMGlobalType;
-
-typedef enum {
- JMM_VMGLOBAL_ORIGIN_DEFAULT = 1, /* Default value */
- JMM_VMGLOBAL_ORIGIN_COMMAND_LINE = 2, /* Set at command line (or JNI invocation) */
- JMM_VMGLOBAL_ORIGIN_MANAGEMENT = 3, /* Set via management interface */
- JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR = 4, /* Set via environment variables */
- JMM_VMGLOBAL_ORIGIN_CONFIG_FILE = 5, /* Set via config file (such as .hotspotrc) */
- JMM_VMGLOBAL_ORIGIN_ERGONOMIC = 6, /* Set via ergonomic */
- JMM_VMGLOBAL_ORIGIN_ATTACH_ON_DEMAND = 7, /* Set via attach */
- JMM_VMGLOBAL_ORIGIN_OTHER = 99 /* Set via some other mechanism */
-} jmmVMGlobalOrigin;
-
-typedef struct {
- jstring name;
- jvalue value;
- jmmVMGlobalType type; /* Data type */
- jmmVMGlobalOrigin origin; /* Default or non-default value */
- unsigned int writeable : 1; /* dynamically writeable */
- unsigned int external : 1; /* external supported interface */
- unsigned int reserved : 30;
- void *reserved1;
- void *reserved2;
-} jmmVMGlobal;
-
-typedef struct {
- const char* name;
- char type;
- const char* description;
-} jmmExtAttributeInfo;
-
-/* Caller has to set the following fields before calling GetLastGCStat
- * o usage_before_gc - array of MemoryUsage objects
- * o usage_after_gc - array of MemoryUsage objects
- * o gc_ext_attribute_values_size - size of gc_ext_atttribute_values array
- * o gc_ext_attribtue_values - array of jvalues
- */
-typedef struct {
- jlong gc_index; /* Index of the collections */
- jlong start_time; /* Start time of the GC */
- jlong end_time; /* End time of the GC */
- jobjectArray usage_before_gc; /* Memory usage array before GC */
- jobjectArray usage_after_gc; /* Memory usage array after GC */
- jint gc_ext_attribute_values_size; /* set by the caller of GetGCStat */
- jvalue* gc_ext_attribute_values; /* Array of jvalue for GC extension attributes */
- jint num_gc_ext_attributes; /* number of GC extension attribute values s are filled */
- /* -1 indicates gc_ext_attribute_values is not big enough */
-} jmmGCStat;
-
-typedef struct {
- const char* name; /* Name of the diagnostic command */
- const char* description; /* Short description */
- const char* impact; /* Impact on the JVM */
- const char* permission_class; /* Class name of the required permission if any */
- const char* permission_name; /* Permission name of the required permission if any */
- const char* permission_action; /* Action name of the required permission if any*/
- int num_arguments; /* Number of supported options or arguments */
- jboolean enabled; /* True if the diagnostic command can be invoked, false otherwise*/
-} dcmdInfo;
-
-typedef struct {
- const char* name; /* Option/Argument name*/
- const char* description; /* Short description */
- const char* type; /* Type: STRING, BOOLEAN, etc. */
- const char* default_string; /* Default value in a parsable string */
- jboolean mandatory; /* True if the option/argument is mandatory */
- jboolean option; /* True if it is an option, false if it is an argument */
- /* (see diagnosticFramework.hpp for option/argument definitions) */
- jboolean multiple; /* True is the option can be specified several time */
- int position; /* Expected position for this argument (this field is */
- /* meaningless for options) */
-} dcmdArgInfo;
-
-typedef struct jmmInterface_1_ {
- void* reserved1;
- void* reserved2;
-
- jint (JNICALL *GetVersion) (JNIEnv *env);
-
- jint (JNICALL *GetOptionalSupport) (JNIEnv *env,
- jmmOptionalSupport* support_ptr);
-
- jint (JNICALL *GetThreadInfo) (JNIEnv *env,
- jlongArray ids,
- jint maxDepth,
- jobjectArray infoArray);
-
- jobjectArray (JNICALL *GetMemoryPools) (JNIEnv* env, jobject mgr);
-
- jobjectArray (JNICALL *GetMemoryManagers) (JNIEnv* env, jobject pool);
-
- jobject (JNICALL *GetMemoryPoolUsage) (JNIEnv* env, jobject pool);
- jobject (JNICALL *GetPeakMemoryPoolUsage) (JNIEnv* env, jobject pool);
-
- void (JNICALL *GetThreadAllocatedMemory)
- (JNIEnv *env,
- jlongArray ids,
- jlongArray sizeArray);
-
- jobject (JNICALL *GetMemoryUsage) (JNIEnv* env, jboolean heap);
-
- jlong (JNICALL *GetLongAttribute) (JNIEnv *env, jobject obj, jmmLongAttribute att);
- jboolean (JNICALL *GetBoolAttribute) (JNIEnv *env, jmmBoolAttribute att);
- jboolean (JNICALL *SetBoolAttribute) (JNIEnv *env, jmmBoolAttribute att, jboolean flag);
-
- jint (JNICALL *GetLongAttributes) (JNIEnv *env,
- jobject obj,
- jmmLongAttribute* atts,
- jint count,
- jlong* result);
-
- jobjectArray (JNICALL *FindCircularBlockedThreads) (JNIEnv *env);
-
- // Not used in JDK 6 or JDK 7
- jlong (JNICALL *GetThreadCpuTime) (JNIEnv *env, jlong thread_id);
-
- jobjectArray (JNICALL *GetVMGlobalNames) (JNIEnv *env);
- jint (JNICALL *GetVMGlobals) (JNIEnv *env,
- jobjectArray names,
- jmmVMGlobal *globals,
- jint count);
-
- jint (JNICALL *GetInternalThreadTimes) (JNIEnv *env,
- jobjectArray names,
- jlongArray times);
-
- jboolean (JNICALL *ResetStatistic) (JNIEnv *env,
- jvalue obj,
- jmmStatisticType type);
-
- void (JNICALL *SetPoolSensor) (JNIEnv *env,
- jobject pool,
- jmmThresholdType type,
- jobject sensor);
-
- jlong (JNICALL *SetPoolThreshold) (JNIEnv *env,
- jobject pool,
- jmmThresholdType type,
- jlong threshold);
- jobject (JNICALL *GetPoolCollectionUsage) (JNIEnv* env, jobject pool);
-
- jint (JNICALL *GetGCExtAttributeInfo) (JNIEnv *env,
- jobject mgr,
- jmmExtAttributeInfo *ext_info,
- jint count);
- void (JNICALL *GetLastGCStat) (JNIEnv *env,
- jobject mgr,
- jmmGCStat *gc_stat);
-
- jlong (JNICALL *GetThreadCpuTimeWithKind)
- (JNIEnv *env,
- jlong thread_id,
- jboolean user_sys_cpu_time);
- void (JNICALL *GetThreadCpuTimesWithKind)
- (JNIEnv *env,
- jlongArray ids,
- jlongArray timeArray,
- jboolean user_sys_cpu_time);
-
- jint (JNICALL *DumpHeap0) (JNIEnv *env,
- jstring outputfile,
- jboolean live);
- jobjectArray (JNICALL *FindDeadlocks) (JNIEnv *env,
- jboolean object_monitors_only);
- void (JNICALL *SetVMGlobal) (JNIEnv *env,
- jstring flag_name,
- jvalue new_value);
- void* reserved6;
- jobjectArray (JNICALL *DumpThreads) (JNIEnv *env,
- jlongArray ids,
- jboolean lockedMonitors,
- jboolean lockedSynchronizers,
- jint maxDepth);
- void (JNICALL *SetGCNotificationEnabled) (JNIEnv *env,
- jobject mgr,
- jboolean enabled);
- jobjectArray (JNICALL *GetDiagnosticCommands) (JNIEnv *env);
- void (JNICALL *GetDiagnosticCommandInfo)
- (JNIEnv *env,
- jobjectArray cmds,
- dcmdInfo *infoArray);
- void (JNICALL *GetDiagnosticCommandArgumentsInfo)
- (JNIEnv *env,
- jstring commandName,
- dcmdArgInfo *infoArray);
- jstring (JNICALL *ExecuteDiagnosticCommand)
- (JNIEnv *env,
- jstring command);
- void (JNICALL *SetDiagnosticFrameworkNotificationEnabled)
- (JNIEnv *env,
- jboolean enabled);
-} JmmInterface;
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif /* __cplusplus */
-
-#endif /* !_JAVA_JMM_H_ */
--- a/test/hotspot/jtreg/compiler/loopopts/UseCountedLoopSafepointsTest.java Wed Dec 13 12:45:06 2017 -0800
+++ b/test/hotspot/jtreg/compiler/loopopts/UseCountedLoopSafepointsTest.java Fri Dec 08 23:43:25 2017 +0100
@@ -62,7 +62,7 @@
try {
oa = ProcessTools.executeTestJvm("-XX:+UnlockDiagnosticVMOptions", "-Xbootclasspath/a:.",
"-XX:" + (enabled ? "+" : "-") + "UseCountedLoopSafepoints",
- "-XX:LoopStripMiningIter=" + (enabled ? "1" : "0"), "-XX:+WhiteBoxAPI",
+ "-XX:+WhiteBoxAPI",
"-XX:-Inline", "-Xbatch", "-XX:+PrintIdeal", "-XX:LoopUnrollLimit=0",
"-XX:CompileOnly=" + UseCountedLoopSafepoints.class.getName() + "::testMethod",
UseCountedLoopSafepoints.class.getName());
--- a/test/hotspot/jtreg/runtime/handshake/HandshakeTransitionTest.java Wed Dec 13 12:45:06 2017 -0800
+++ b/test/hotspot/jtreg/runtime/handshake/HandshakeTransitionTest.java Fri Dec 08 23:43:25 2017 +0100
@@ -49,6 +49,14 @@
public static void main(String[] args) throws Exception {
String lib = System.getProperty("test.nativepath");
WhiteBox wb = WhiteBox.getWhiteBox();
+ Boolean useJVMCICompiler = wb.getBooleanVMFlag("UseJVMCICompiler");
+ String useJVMCICompilerStr;
+ if (useJVMCICompiler != null) {
+ useJVMCICompilerStr = useJVMCICompiler ? "-XX:+UseJVMCICompiler" : "-XX:-UseJVMCICompiler";
+ } else {
+ // pass something innocuous
+ useJVMCICompilerStr = "-XX:+UnlockExperimentalVMOptions";
+ }
ProcessBuilder pb =
ProcessTools.createJavaProcessBuilder(
true,
@@ -60,7 +68,7 @@
"-XX:ConcGCThreads=1",
"-XX:CICompilerCount=2",
"-XX:+UnlockExperimentalVMOptions",
- (wb.getBooleanVMFlag("UseJVMCICompiler") ? "-XX:+UseJVMCICompiler" : "-XX:-UseJVMCICompiler"),
+ useJVMCICompilerStr,
"HandshakeTransitionTest$Test");
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/serviceability/sa/ClhsdbSource.java Fri Dec 08 23:43:25 2017 +0100
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import jdk.test.lib.apps.LingeredApp;
+
+/*
+ * @test
+ * @bug 8192823
+ * @summary Test clhsdb source command
+ * @library /test/lib
+ * @run main/othervm ClhsdbSource
+ */
+
+public class ClhsdbSource {
+
+ public static void main(String[] args) throws Exception {
+ System.out.println("Starting ClhsdbSource test");
+
+ LingeredApp theApp = null;
+ try {
+ ClhsdbLauncher test = new ClhsdbLauncher();
+ theApp = LingeredApp.startApp();
+ System.out.println("Started LingeredApp with pid " + theApp.getPid());
+
+ Path file = Paths.get("clhsdb_cmd_file");
+ Files.write(file, "jstack -v\nhelp".getBytes());
+ List<String> cmds = List.of("source clhsdb_cmd_file");
+
+ Map<String, List<String>> expStrMap = new HashMap<>();
+ expStrMap.put("source clhsdb_cmd_file", List.of(
+ "No deadlocks found",
+ "Common-Cleaner",
+ "Signal Dispatcher",
+ "java.lang.ref.Finalizer$FinalizerThread.run",
+ "java.lang.ref.Reference",
+ "Method*",
+ "LingeredApp.main",
+ "Available commands:",
+ "attach pid | exec core",
+ "intConstant [ name [ value ] ]",
+ "type [ type [ name super isOop isInteger isUnsigned size ] ]",
+ "symboltable name"));
+
+ Map<String, List<String>> unExpStrMap = new HashMap<>();
+ unExpStrMap.put("source clhsdb_cmd_file", List.of(
+ "No such file or directory"));
+
+ test.run(theApp.getPid(), cmds, expStrMap, unExpStrMap);
+ Files.delete(file);
+ } catch (Exception ex) {
+ throw new RuntimeException("Test ERROR " + ex, ex);
+ } finally {
+ LingeredApp.stopApp(theApp);
+ }
+ System.out.println("Test PASSED");
+ }
+}
--- a/test/jdk/java/lang/ClassLoader/nativeLibrary/NativeLibraryTest.java Wed Dec 13 12:45:06 2017 -0800
+++ b/test/jdk/java/lang/ClassLoader/nativeLibrary/NativeLibraryTest.java Fri Dec 08 23:43:25 2017 +0100
@@ -23,7 +23,7 @@
/*
* @test
- * @bug 8164512
+ * @bug 8164512 8191360
* @summary verify if the native library is unloaded when the class loader is GC'ed
* @build p.Test
* @run main/othervm/native -Xcheck:jni NativeLibraryTest