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8375977: G1: Convert JVMCICleaningTask to use Atomic<T>

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Reviewed-by: kbarrett
This commit is contained in:
Thomas Schatzl 2026-01-22 08:35:03 +00:00
parent 92236ead1d
commit 63be87d7f3
2 changed files with 8 additions and 6 deletions
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7
src/hotspot/share/gc/g1/g1ParallelCleaning.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2019, 2026, 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
@ -24,7 +24,6 @@
#include "gc/g1/g1ParallelCleaning.hpp"
#include "runtime/atomicAccess.hpp"
#if INCLUDE_JVMCI
#include "jvmci/jvmci.hpp"
#endif
@ -35,11 +34,11 @@ JVMCICleaningTask::JVMCICleaningTask() :
}
bool JVMCICleaningTask::claim_cleaning_task() {
if (AtomicAccess::load(&_cleaning_claimed)) {
if (_cleaning_claimed.load_relaxed()) {
return false;
}
return !AtomicAccess::cmpxchg(&_cleaning_claimed, false, true);
return _cleaning_claimed.compare_set(false, true);
}
void JVMCICleaningTask::work(bool unloading_occurred) {

7
src/hotspot/share/gc/g1/g1ParallelCleaning.hpp
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2019, 2026, 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
@ -26,10 +26,13 @@
#define SHARE_GC_G1_G1PARALLELCLEANING_HPP
#include "gc/shared/parallelCleaning.hpp"
#if INCLUDE_JVMCI
#include "runtime/atomic.hpp"
#endif
#if INCLUDE_JVMCI
class JVMCICleaningTask : public StackObj {
volatile bool _cleaning_claimed;
Atomic<bool> _cleaning_claimed;
public:
JVMCICleaningTask();