git: openjdk/jdk: master: 8342382: Implement JEP 522: G1 GC: Improve Throughput by Reducing Synchronization

[Thomas Schatzl]

Changeset: 8d5c0056
Branch: master
Author:    Thomas Schatzl <tschatzl at openjdk.org>
Date:      2025-09-22 13:47:45 +0000
URL:       https://git.openjdk.org/jdk/commit/8d5c0056420731cbbd83f2d23837bbb5cdc9e4cc

8342382: Implement JEP 522: G1 GC: Improve Throughput by Reducing Synchronization

Co-authored-by: Amit Kumar <amitkumar at openjdk.org>
Co-authored-by: Martin Doerr <mdoerr at openjdk.org>
Co-authored-by: Carlo Refice <carlo.refice at oracle.com>
Co-authored-by: Fei Yang <fyang at openjdk.org>
Reviewed-by: iwalulya, rcastanedalo, aph, ayang

! src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.hpp
! src/hotspot/cpu/aarch64/gc/g1/g1_aarch64.ad
! src/hotspot/cpu/arm/gc/g1/g1BarrierSetAssembler_arm.cpp
! src/hotspot/cpu/arm/gc/g1/g1BarrierSetAssembler_arm.hpp
! src/hotspot/cpu/arm/gc/g1/g1_arm.ad
! src/hotspot/cpu/ppc/gc/g1/g1BarrierSetAssembler_ppc.cpp
! src/hotspot/cpu/ppc/gc/g1/g1BarrierSetAssembler_ppc.hpp
! src/hotspot/cpu/ppc/gc/g1/g1_ppc.ad
! src/hotspot/cpu/riscv/gc/g1/g1BarrierSetAssembler_riscv.cpp
! src/hotspot/cpu/riscv/gc/g1/g1BarrierSetAssembler_riscv.hpp
! src/hotspot/cpu/riscv/gc/g1/g1_riscv.ad
! src/hotspot/cpu/s390/gc/g1/g1BarrierSetAssembler_s390.cpp
! src/hotspot/cpu/s390/gc/g1/g1BarrierSetAssembler_s390.hpp
! src/hotspot/cpu/s390/gc/g1/g1_s390.ad
! src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.cpp
! src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.hpp
! src/hotspot/cpu/x86/gc/g1/g1_x86_64.ad
! src/hotspot/share/code/aotCodeCache.cpp
! src/hotspot/share/gc/g1/c1/g1BarrierSetC1.cpp
! src/hotspot/share/gc/g1/c1/g1BarrierSetC1.hpp
! src/hotspot/share/gc/g1/c2/g1BarrierSetC2.cpp
! src/hotspot/share/gc/g1/c2/g1BarrierSetC2.hpp
! src/hotspot/share/gc/g1/g1Allocator.cpp
! src/hotspot/share/gc/g1/g1Analytics.cpp
! src/hotspot/share/gc/g1/g1Analytics.hpp
! src/hotspot/share/gc/g1/g1Arguments.cpp
! src/hotspot/share/gc/g1/g1BarrierSet.cpp
! src/hotspot/share/gc/g1/g1BarrierSet.hpp
! src/hotspot/share/gc/g1/g1BarrierSet.inline.hpp
! src/hotspot/share/gc/g1/g1BarrierSetRuntime.cpp
! src/hotspot/share/gc/g1/g1BarrierSetRuntime.hpp
! src/hotspot/share/gc/g1/g1CardTable.cpp
! src/hotspot/share/gc/g1/g1CardTable.hpp
! src/hotspot/share/gc/g1/g1CardTable.inline.hpp
+ src/hotspot/share/gc/g1/g1CardTableClaimTable.cpp
+ src/hotspot/share/gc/g1/g1CardTableClaimTable.hpp
+ src/hotspot/share/gc/g1/g1CardTableClaimTable.inline.hpp
! src/hotspot/share/gc/g1/g1CollectedHeap.cpp
! src/hotspot/share/gc/g1/g1CollectedHeap.hpp
! src/hotspot/share/gc/g1/g1CollectedHeap.inline.hpp
! src/hotspot/share/gc/g1/g1CollectionSet.cpp
! src/hotspot/share/gc/g1/g1ConcurrentMark.cpp
! src/hotspot/share/gc/g1/g1ConcurrentMark.hpp
! src/hotspot/share/gc/g1/g1ConcurrentMarkRemarkTasks.cpp
! src/hotspot/share/gc/g1/g1ConcurrentRebuildAndScrub.cpp
! src/hotspot/share/gc/g1/g1ConcurrentRefine.cpp
! src/hotspot/share/gc/g1/g1ConcurrentRefine.hpp
! src/hotspot/share/gc/g1/g1ConcurrentRefineStats.cpp
! src/hotspot/share/gc/g1/g1ConcurrentRefineStats.hpp
+ src/hotspot/share/gc/g1/g1ConcurrentRefineSweepTask.cpp
+ src/hotspot/share/gc/g1/g1ConcurrentRefineSweepTask.hpp
! src/hotspot/share/gc/g1/g1ConcurrentRefineThread.cpp
! src/hotspot/share/gc/g1/g1ConcurrentRefineThread.hpp
! src/hotspot/share/gc/g1/g1ConcurrentRefineThreadsNeeded.cpp
- src/hotspot/share/gc/g1/g1DirtyCardQueue.cpp
- src/hotspot/share/gc/g1/g1DirtyCardQueue.hpp
! src/hotspot/share/gc/g1/g1FromCardCache.cpp
! src/hotspot/share/gc/g1/g1FullGCCompactTask.cpp
! src/hotspot/share/gc/g1/g1FullGCPrepareTask.inline.hpp
! src/hotspot/share/gc/g1/g1FullGCResetMetadataTask.cpp
! src/hotspot/share/gc/g1/g1GCPhaseTimes.cpp
! src/hotspot/share/gc/g1/g1GCPhaseTimes.hpp
! src/hotspot/share/gc/g1/g1HeapRegion.cpp
! src/hotspot/share/gc/g1/g1HeapRegion.hpp
! src/hotspot/share/gc/g1/g1HeapRegionManager.cpp
! src/hotspot/share/gc/g1/g1HeapRegionManager.hpp
! src/hotspot/share/gc/g1/g1HeapVerifier.cpp
! src/hotspot/share/gc/g1/g1HeapVerifier.hpp
! src/hotspot/share/gc/g1/g1OopClosures.hpp
! src/hotspot/share/gc/g1/g1OopClosures.inline.hpp
! src/hotspot/share/gc/g1/g1ParScanThreadState.cpp
! src/hotspot/share/gc/g1/g1ParScanThreadState.hpp
! src/hotspot/share/gc/g1/g1ParScanThreadState.inline.hpp
! src/hotspot/share/gc/g1/g1Policy.cpp
! src/hotspot/share/gc/g1/g1Policy.hpp
- src/hotspot/share/gc/g1/g1RedirtyCardsQueue.cpp
- src/hotspot/share/gc/g1/g1RedirtyCardsQueue.hpp
! src/hotspot/share/gc/g1/g1RemSet.cpp
! src/hotspot/share/gc/g1/g1RemSet.hpp
! src/hotspot/share/gc/g1/g1RemSetSummary.cpp
! src/hotspot/share/gc/g1/g1RemSetSummary.hpp
+ src/hotspot/share/gc/g1/g1ReviseYoungLengthTask.cpp
+ src/hotspot/share/gc/g1/g1ReviseYoungLengthTask.hpp
! src/hotspot/share/gc/g1/g1ThreadLocalData.hpp
! src/hotspot/share/gc/g1/g1YoungCollector.cpp
! src/hotspot/share/gc/g1/g1YoungCollector.hpp
! src/hotspot/share/gc/g1/g1YoungGCPostEvacuateTasks.cpp
! src/hotspot/share/gc/g1/g1YoungGCPostEvacuateTasks.hpp
! src/hotspot/share/gc/g1/g1YoungGCPreEvacuateTasks.cpp
! src/hotspot/share/gc/g1/g1YoungGCPreEvacuateTasks.hpp
! src/hotspot/share/gc/g1/g1_globals.hpp
! src/hotspot/share/gc/g1/jvmFlagConstraintsG1.cpp
! src/hotspot/share/gc/g1/jvmFlagConstraintsG1.hpp
! src/hotspot/share/gc/g1/vmStructs_g1.hpp
- src/hotspot/share/gc/shared/bufferNodeList.cpp
- src/hotspot/share/gc/shared/bufferNodeList.hpp
! src/hotspot/share/gc/shared/cardTable.cpp
! src/hotspot/share/gc/shared/cardTable.hpp
! src/hotspot/share/gc/shared/workerDataArray.hpp
! src/hotspot/share/jvmci/jvmciRuntime.cpp
! src/hotspot/share/jvmci/vmStructs_jvmci.cpp
! src/hotspot/share/oops/oop.cpp
! src/hotspot/share/runtime/arguments.cpp
! src/hotspot/share/runtime/cpuTimeCounters.cpp
! src/hotspot/share/runtime/cpuTimeCounters.hpp
! src/hotspot/share/runtime/mutexLocker.cpp
! src/hotspot/share/runtime/mutexLocker.hpp
! src/hotspot/share/runtime/vmOperation.hpp
! test/hotspot/jtreg/compiler/gcbarriers/TestG1BarrierGeneration.java
! test/hotspot/jtreg/gc/g1/TestGCLogMessages.java
! test/hotspot/jtreg/runtime/CommandLine/OptionsValidation/TestOptionsWithRanges.java
! test/hotspot/jtreg/testlibrary_tests/ir_framework/tests/TestIRMatching.java
! test/hotspot/jtreg/vmTestbase/gc/ArrayJuggle/Juggle2.java
! test/jdk/jdk/jfr/event/gc/collection/TestG1ParallelPhases.java