mirror of
https://gitee.com/openharmony/arkcompiler_ets_runtime
synced 2024-10-07 08:03:29 +00:00
a6c0d7989b
To improve the performance of suspend-all framework, the logic of suspend-all should be refactored. Introduce barrier mechanism to synchronize the mutator threads when suspending-gc instead of via read-write-lock. Issue: https://gitee.com/openharmony/arkcompiler_ets_runtime/issues/I9IRJZ Signed-off-by: wuzhefeng <wuzhefeng1@huawei.com> Change-Id: I09d374c1276a8d39888739179ebd908c984812d0
79 lines
1.8 KiB
C++
79 lines
1.8 KiB
C++
/*
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* Copyright (c) 2024 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ECMASCRIPT_MUTATOR_LOCK_H
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#define ECMASCRIPT_MUTATOR_LOCK_H
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#include "ecmascript/platform/mutex.h"
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namespace panda::ecmascript {
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class MutatorLock : public RWLock {
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#ifndef NDEBUG
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public:
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enum MutatorLockState { UNLOCKED, RDLOCK, WRLOCK };
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void ReadLock();
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void WriteLock();
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bool TryReadLock();
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bool TryWriteLock();
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void Unlock();
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bool HasLock() const;
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private:
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MutatorLockState GetState() const;
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void SetState(MutatorLockState newState);
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#endif
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};
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class SuspendBarrier {
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public:
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SuspendBarrier() : passBarrierCount_(0)
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{
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}
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explicit SuspendBarrier(int32_t count) : passBarrierCount_(count)
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{
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}
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void Wait();
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void Pass()
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{
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PassCount(-1);
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}
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void PassStrongly()
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{
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passBarrierCount_.fetch_sub(1, std::memory_order_seq_cst);
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}
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void Initialize(int32_t count)
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{
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passBarrierCount_.store(count, std::memory_order_relaxed);
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}
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void Increment(int32_t delta)
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{
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PassCount(delta);
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Wait();
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}
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private:
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void PassCount(int32_t delta);
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std::atomic<int32_t> passBarrierCount_;
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};
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} // namespace panda::ecmascript
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#endif // ECMASCRIPT_MUTATOR_LOCK_H
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