mirror of
https://gitee.com/openharmony/arkcompiler_ets_runtime
synced 2024-11-23 10:09:54 +00:00
104 lines
2.5 KiB
C++
104 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2024 Huawei Device Co., Ltd.
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "ecmascript/mutator_lock.h"
|
|
#include "ecmascript/js_thread.h"
|
|
|
|
namespace panda::ecmascript {
|
|
#ifndef NDEBUG
|
|
void MutatorLock::ReadLock()
|
|
{
|
|
ASSERT(!HasLock());
|
|
RWLock::ReadLock();
|
|
SetState(MutatorLockState::RDLOCK);
|
|
}
|
|
|
|
void MutatorLock::WriteLock()
|
|
{
|
|
ASSERT(!HasLock());
|
|
RWLock::WriteLock();
|
|
SetState(MutatorLockState::WRLOCK);
|
|
}
|
|
|
|
bool MutatorLock::TryReadLock()
|
|
{
|
|
ASSERT(!HasLock());
|
|
bool res = RWLock::TryReadLock();
|
|
if (res) {
|
|
SetState(MutatorLockState::RDLOCK);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
bool MutatorLock::TryWriteLock()
|
|
{
|
|
ASSERT(!HasLock());
|
|
bool res = RWLock::TryWriteLock();
|
|
if (res) {
|
|
SetState(MutatorLockState::WRLOCK);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
void MutatorLock::Unlock()
|
|
{
|
|
ASSERT(HasLock());
|
|
RWLock::Unlock();
|
|
SetState(MutatorLockState::UNLOCKED);
|
|
}
|
|
|
|
bool MutatorLock::HasLock() const
|
|
{
|
|
return GetState() != MutatorLockState::UNLOCKED;
|
|
}
|
|
|
|
MutatorLock::MutatorLockState MutatorLock::GetState() const
|
|
{
|
|
return JSThread::GetCurrent()->GetMutatorLockState();
|
|
}
|
|
|
|
void MutatorLock::SetState(MutatorLock::MutatorLockState newState)
|
|
{
|
|
JSThread::GetCurrent()->SetMutatorLockState(newState);
|
|
}
|
|
#endif
|
|
|
|
void SuspendBarrier::Wait()
|
|
{
|
|
while (true) {
|
|
int32_t curCount = passBarrierCount_.load(std::memory_order_relaxed);
|
|
if (LIKELY(curCount > 0)) {
|
|
#if defined(PANDA_TARGET_OHOS)
|
|
sched_yield();
|
|
#endif
|
|
} else {
|
|
// Use seq_cst to synchronize memory.
|
|
curCount = passBarrierCount_.load(std::memory_order_seq_cst);
|
|
ASSERT(curCount == 0);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void SuspendBarrier::PassCount(int32_t delta)
|
|
{
|
|
bool done = false;
|
|
do {
|
|
int32_t curCount = passBarrierCount_.load(std::memory_order_relaxed);
|
|
// Reduce value by 1.
|
|
done = passBarrierCount_.compare_exchange_strong(curCount, curCount + delta);
|
|
} while (!done);
|
|
}
|
|
} // namespace panda::ecmascript
|