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6484982: G1: process references during evacuation pauses
Summary: G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate.
Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp
author | johnc |
---|---|
date | Thu, 22 Sep 2011 10:57:37 -0700 |
parents | 4f93f0d00802 |
children | fd65bc7c09b6 |
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# # Copyright (c) 2000, 2011, 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. # # # This guards against adding broken .java files to the directory # hierarchy, but may be a pain to keep in sync # Generated using the build-pkglist script ifeq "x$(GAMMADIR)" "x" include ../../make/defs.make else include $(GAMMADIR)/make/defs.make endif ifeq "x$(HOTSPOT_BUILD_VERSION)" "x" SA_BUILD_VERSION=$(HOTSPOT_RELEASE_VERSION) else SA_BUILD_VERSION=$(HOTSPOT_RELEASE_VERSION)-$(HOTSPOT_BUILD_VERSION) endif PKGLIST = \ sun.jvm.hotspot \ sun.jvm.hotspot.asm \ sun.jvm.hotspot.asm.amd64 \ sun.jvm.hotspot.asm.ia64 \ sun.jvm.hotspot.asm.sparc \ sun.jvm.hotspot.asm.x86 \ sun.jvm.hotspot.bugspot \ sun.jvm.hotspot.bugspot.tree \ sun.jvm.hotspot.c1 \ sun.jvm.hotspot.ci \ sun.jvm.hotspot.code \ sun.jvm.hotspot.compiler \ sun.jvm.hotspot.debugger \ sun.jvm.hotspot.debugger.amd64 \ sun.jvm.hotspot.debugger.cdbg \ sun.jvm.hotspot.debugger.cdbg.basic \ sun.jvm.hotspot.debugger.cdbg.basic.amd64 \ sun.jvm.hotspot.debugger.cdbg.basic.x86 \ sun.jvm.hotspot.debugger.dummy \ sun.jvm.hotspot.debugger.ia64 \ sun.jvm.hotspot.debugger.linux \ sun.jvm.hotspot.debugger.linux.amd64 \ sun.jvm.hotspot.debugger.linux.ia64 \ sun.jvm.hotspot.debugger.linux.x86 \ sun.jvm.hotspot.debugger.posix \ sun.jvm.hotspot.debugger.posix.elf \ sun.jvm.hotspot.debugger.proc \ sun.jvm.hotspot.debugger.proc.amd64 \ sun.jvm.hotspot.debugger.proc.sparc \ sun.jvm.hotspot.debugger.proc.x86 \ sun.jvm.hotspot.debugger.remote \ sun.jvm.hotspot.debugger.remote.amd64 \ sun.jvm.hotspot.debugger.remote.sparc \ sun.jvm.hotspot.debugger.remote.x86 \ sun.jvm.hotspot.debugger.sparc \ sun.jvm.hotspot.debugger.win32.coff \ sun.jvm.hotspot.debugger.windbg \ sun.jvm.hotspot.debugger.windbg.amd64 \ sun.jvm.hotspot.debugger.windbg.ia64 \ sun.jvm.hotspot.debugger.windbg.x86 \ sun.jvm.hotspot.debugger.x86 \ sun.jvm.hotspot.gc_implementation \ sun.jvm.hotspot.gc_implementation.g1 \ sun.jvm.hotspot.gc_implementation.parallelScavenge \ sun.jvm.hotspot.gc_implementation.shared \ sun.jvm.hotspot.gc_interface \ sun.jvm.hotspot.interpreter \ sun.jvm.hotspot.jdi \ sun.jvm.hotspot.livejvm \ sun.jvm.hotspot.memory \ sun.jvm.hotspot.opto \ sun.jvm.hotspot.oops \ sun.jvm.hotspot.prims \ sun.jvm.hotspot.runtime \ sun.jvm.hotspot.runtime.amd64 \ sun.jvm.hotspot.runtime.ia64 \ sun.jvm.hotspot.runtime.linux \ sun.jvm.hotspot.runtime.linux_amd64 \ sun.jvm.hotspot.runtime.linux_ia64 \ sun.jvm.hotspot.runtime.linux_sparc \ sun.jvm.hotspot.runtime.linux_x86 \ sun.jvm.hotspot.runtime.posix \ sun.jvm.hotspot.runtime.solaris_amd64 \ sun.jvm.hotspot.runtime.solaris_sparc \ sun.jvm.hotspot.runtime.solaris_x86 \ sun.jvm.hotspot.runtime.sparc \ sun.jvm.hotspot.runtime.win32_amd64 \ sun.jvm.hotspot.runtime.win32_ia64 \ sun.jvm.hotspot.runtime.win32_x86 \ sun.jvm.hotspot.runtime.x86 \ sun.jvm.hotspot.tools \ sun.jvm.hotspot.tools.jcore \ sun.jvm.hotspot.tools.soql \ sun.jvm.hotspot.types \ sun.jvm.hotspot.types.basic \ sun.jvm.hotspot.ui \ sun.jvm.hotspot.ui.action \ sun.jvm.hotspot.ui.classbrowser \ sun.jvm.hotspot.ui.resources \ sun.jvm.hotspot.ui.table \ sun.jvm.hotspot.ui.tree \ sun.jvm.hotspot.ui.treetable \ sun.jvm.hotspot.utilities \ sun.jvm.hotspot.utilities.memo \ sun.jvm.hotspot.utilities.soql \ com.sun.java.swing.action \ com.sun.java.swing.ui #END PKGLIST # Generated using the build-filelist script FILELIST = \ sun/jvm/hotspot/*.java \ sun/jvm/hotspot/asm/*.java \ sun/jvm/hotspot/asm/amd64/*.java \ sun/jvm/hotspot/asm/ia64/*.java \ sun/jvm/hotspot/asm/sparc/*.java \ sun/jvm/hotspot/asm/x86/*.java \ sun/jvm/hotspot/bugspot/*.java \ sun/jvm/hotspot/bugspot/tree/*.java \ sun/jvm/hotspot/c1/*.java \ sun/jvm/hotspot/ci/*.java \ sun/jvm/hotspot/code/*.java \ sun/jvm/hotspot/compiler/*.java \ sun/jvm/hotspot/debugger/*.java \ sun/jvm/hotspot/debugger/amd64/*.java \ sun/jvm/hotspot/debugger/cdbg/*.java \ sun/jvm/hotspot/debugger/cdbg/basic/*.java \ sun/jvm/hotspot/debugger/cdbg/basic/amd64/*.java \ sun/jvm/hotspot/debugger/cdbg/basic/x86/*.java \ sun/jvm/hotspot/debugger/dummy/*.java \ sun/jvm/hotspot/debugger/ia64/*.java \ sun/jvm/hotspot/debugger/linux/*.java \ sun/jvm/hotspot/debugger/linux/x86/*.java \ sun/jvm/hotspot/debugger/posix/*.java \ sun/jvm/hotspot/debugger/posix/elf/*.java \ sun/jvm/hotspot/debugger/proc/*.java \ sun/jvm/hotspot/debugger/proc/amd64/*.java \ sun/jvm/hotspot/debugger/proc/sparc/*.java \ sun/jvm/hotspot/debugger/proc/x86/*.java \ sun/jvm/hotspot/debugger/remote/*.java \ sun/jvm/hotspot/debugger/remote/amd64/*.java \ sun/jvm/hotspot/debugger/remote/sparc/*.java \ sun/jvm/hotspot/debugger/remote/x86/*.java \ sun/jvm/hotspot/debugger/sparc/*.java \ sun/jvm/hotspot/debugger/win32/coff/*.java \ sun/jvm/hotspot/debugger/windbg/*.java \ sun/jvm/hotspot/debugger/windbg/ia64/*.java \ sun/jvm/hotspot/debugger/windbg/x86/*.java \ sun/jvm/hotspot/debugger/x86/*.java \ sun/jvm/hotspot/gc_implementation/g1/*.java \ sun/jvm/hotspot/gc_implementation/parallelScavenge/*.java \ sun/jvm/hotspot/gc_implementation/shared/*.java \ sun/jvm/hotspot/interpreter/*.java \ sun/jvm/hotspot/jdi/*.java \ sun/jvm/hotspot/livejvm/*.java \ sun/jvm/hotspot/memory/*.java \ sun/jvm/hotspot/oops/*.java \ sun/jvm/hotspot/opto/*.java \ sun/jvm/hotspot/prims/*.java \ sun/jvm/hotspot/runtime/*.java \ sun/jvm/hotspot/runtime/amd64/*.java \ sun/jvm/hotspot/runtime/ia64/*.java \ sun/jvm/hotspot/runtime/linux/*.java \ sun/jvm/hotspot/runtime/linux_amd64/*.java \ sun/jvm/hotspot/runtime/linux_ia64/*.java \ sun/jvm/hotspot/runtime/linux_sparc/*.java \ sun/jvm/hotspot/runtime/linux_x86/*.java \ sun/jvm/hotspot/runtime/posix/*.java \ sun/jvm/hotspot/runtime/solaris_amd64/*.java \ sun/jvm/hotspot/runtime/solaris_sparc/*.java \ sun/jvm/hotspot/runtime/solaris_x86/*.java \ sun/jvm/hotspot/runtime/sparc/*.java \ sun/jvm/hotspot/runtime/win32_amd64/*.java \ sun/jvm/hotspot/runtime/win32_ia64/*.java \ sun/jvm/hotspot/runtime/win32_x86/*.java \ sun/jvm/hotspot/runtime/x86/*.java \ sun/jvm/hotspot/tools/*.java \ sun/jvm/hotspot/tools/jcore/*.java \ sun/jvm/hotspot/tools/soql/*.java \ sun/jvm/hotspot/types/*.java \ sun/jvm/hotspot/types/basic/*.java \ sun/jvm/hotspot/ui/*.java \ sun/jvm/hotspot/ui/action/*.java \ sun/jvm/hotspot/ui/classbrowser/*.java \ sun/jvm/hotspot/ui/table/*.java \ sun/jvm/hotspot/ui/tree/*.java \ sun/jvm/hotspot/ui/treetable/*.java \ sun/jvm/hotspot/utilities/*.java \ sun/jvm/hotspot/utilities/memo/*.java \ sun/jvm/hotspot/utilities/soql/*.java \ com/sun/java/swing/action/*.java \ com/sun/java/swing/ui/*.java #END FILELIST ifneq "x$(ALT_BOOTDIR)" "x" BOOTDIR := $(ALT_BOOTDIR) endif ifeq "x$(BOOTDIR)" "x" JDK_HOME := $(shell dirname $(shell which java))/.. else JDK_HOME := $(BOOTDIR) endif isUnix := $(shell test -r c:/; echo $$?) ifeq "$(isUnix)" "1" CPS := : else CPS := ";" endif SRC_DIR = ../src/share/classes BUILD_DIR = ../build OUTPUT_DIR = $(BUILD_DIR)/classes DOC_DIR = $(BUILD_DIR)/doc # gnumake 3.78.1 does not accept the *s, # so use the shell to expand them ALLFILES := $(patsubst %,$(SRC_DIR)/%,$(FILELIST)) ALLFILES := $(shell /bin/ls $(ALLFILES)) # tools.jar is used by the sa-jdi binding CLASSPATH = $(JDK_HOME)/lib/tools.jar CLASSPATH := $(subst \,/,$(CLASSPATH)) # FIXME: autogenerate call to rmic SA_BUILD_VERSION_PROP = "sun.jvm.hotspot.runtime.VM.saBuildVersion=$(SA_BUILD_VERSION)" SA_PROPERTIES = $(OUTPUT_DIR)/sa.properties JAVAC = $(JDK_HOME)/bin/javac JAVADOC = $(JDK_HOME)/bin/javadoc RMIC = $(JDK_HOME)/bin/rmic # Tagging it on because there's no reason not to run it all: filelist @mkdir -p $(OUTPUT_DIR) @echo "$(SA_BUILD_VERSION_PROP)" > $(SA_PROPERTIES) $(JAVAC) -classpath $(CLASSPATH) -deprecation -sourcepath $(SRC_DIR) -g -d $(OUTPUT_DIR) @filelist $(RMIC) -classpath $(OUTPUT_DIR) -d $(OUTPUT_DIR) sun.jvm.hotspot.debugger.remote.RemoteDebuggerServer rm -f $(OUTPUT_DIR)/sun/jvm/hotspot/utilities/soql/sa.js cp $(SRC_DIR)/sun/jvm/hotspot/utilities/soql/sa.js $(OUTPUT_DIR)/sun/jvm/hotspot/utilities/soql mkdir -p $(OUTPUT_DIR)/sun/jvm/hotspot/ui/resources rm -f $(OUTPUT_DIR)/sun/jvm/hotspot/ui/resources/* cp $(SRC_DIR)/sun/jvm/hotspot/ui/resources/*.png $(OUTPUT_DIR)/sun/jvm/hotspot/ui/resources/ cp -r $(SRC_DIR)/images/* $(OUTPUT_DIR)/ allprof: filelist @mkdir -p $(OUTPUT_DIR) @echo "$(SA_BUILD_VERSION_PROP)" > $(SA_PROPERTIES) $(JAVAC) -J-Xprof -classpath $(CLASSPATH) -deprecation -sourcepath $(SRC_DIR) -g -d $(OUTPUT_DIR) @filelist $(RMIC) -classpath $(OUTPUT_DIR) -d $(OUTPUT_DIR) sun.jvm.hotspot.debugger.remote.RemoteDebuggerServer rm -f $(OUTPUT_DIR)/sun/jvm/hotspot/utilities/soql/sa.js cp $(SRC_DIR)/sun/jvm/hotspot/utilities/soql/sa.js $(OUTPUT_DIR)/sun/jvm/hotspot/utilities/soql mkdir -p $(OUTPUT_DIR)/sun/jvm/hotspot/ui/resources rm -f $(OUTPUT_DIR)/sun/jvm/hotspot/ui/resources/* cp $(SRC_DIR)/sun/jvm/hotspot/ui/resources/*.png $(OUTPUT_DIR)/sun/jvm/hotspot/ui/resources/ cp -r $(SRC_DIR)/images/* $(OUTPUT_DIR)/ .PHONY: filelist filelist: $(ALLFILES) @if [ ! -f $(JDK_HOME)/lib/tools.jar ] ; then \ echo "Missing $(JDK_HOME)/lib/tools.jar file. Use 1.6.0 or later version jdk to build SA."; \ echo ""; \ exit 1; \ fi @rm -f $@ @echo $(ALLFILES) > $@ .PHONY: natives natives: cd ../src/os/`java -classpath $(OUTPUT_DIR) sun.jvm.hotspot.utilities.PlatformInfo`; $(MAKE) all .PHONY: sa-jdi.jar sa-jdi.jar: echo "sa-jdi.jar is built by a hotspot build." docs: @$(JAVADOC) -private -classpath $(CLASSPATH) -sourcepath $(SRC_DIR) -d $(DOC_DIR) $(PKGLIST) sizes: $(ALLFILES) wc -l $(ALLFILES) cscope: $(ALLFILES) rm -f java.files echo $(ALLFILES) > java.files cscope -b -i java.files -f java.out rm -f java.files .PHONY: sa.jar sa.jar: rm -f $(BUILD_DIR)/sa.jar cd $(OUTPUT_DIR) ; jar cvf ../sa.jar * clean:: rm -rf filelist cd ../src/os/`java -classpath $(OUTPUT_DIR) sun.jvm.hotspot.utilities.PlatformInfo`; $(MAKE) clean rm -rf $(BUILD_DIR)/*