116 lines
2.5 KiB
C++
116 lines
2.5 KiB
C++
/***
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Copyright (C) 2023 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: AuThreadState.hpp
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Date: 2023-11-04
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Author: Reece
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***/
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#include <Source/RuntimeInternal.hpp>
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#include "Async.hpp"
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#include "AuThreadState.hpp"
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#include <Source/IO/Loop/LSAsync.hpp>
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#include "ThreadWorkerQueueShim.hpp"
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namespace Aurora::Async
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{
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ThreadStateSync::ThreadStateSync():
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cvVariable(AuUnsafeRaiiToShared(cvWorkMutex.AsPointer()))
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{
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}
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ThreadStateBase::ThreadStateBase()
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{
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}
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ThreadStateBase::~ThreadStateBase()
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{
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if (this->asyncLoop)
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{
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this->asyncLoop->pParent = nullptr;
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if (this->asyncLoop)
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{
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(void)this->asyncLoop->SourceRemove(this->sync.eventLs);
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}
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}
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}
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bool ThreadStateSync::Init()
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{
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this->eventLs = AuLoop::NewLSAsync();
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return true;
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}
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bool ThreadStateBase::Init()
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{
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if (!(this->asyncLoop = AuMakeShared<AsyncLoop>()))
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{
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SysPushErrorMemory();
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return {};
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}
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this->asyncLoop->pParent = this;
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if (!this->asyncLoop->Init())
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{
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SysPushErrorNested();
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return {};
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}
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if (!this->sync.Init())
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{
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SysPushErrorNested();
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return {};
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}
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if (!this->asyncLoop->SourceAdd(this->sync.eventLs))
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{
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SysPushErrorNested();
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return {};
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}
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return true;
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}
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void ThreadStateSync::SetEvent(bool bBoth, bool bHasWork)
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{
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if (auto pEvent = this->eventLs)
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{
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if (AuAtomicTestAndSet(&this->cvLSActive, 0u) == 0)
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{
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pEvent->Set();
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}
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}
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if (bHasWork)
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{
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AuAtomicAdd(&this->cvHasWork, 1u);
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}
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if (bBoth)
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{
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this->cvWorkMutex->Lock();
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this->cvWorkMutex->Unlock();
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this->cvVariable->Signal();
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}
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}
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void ThreadStateSync::UpdateCVState(ThreadState *pState)
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{
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auto uState = pState->sync.cvHasWork;
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auto uMin = AuMin(uState, pState->pendingWorkItems.size());
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if (!uMin) uMin = 1;
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while (uState &&
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AuAtomicCompareExchange<AuUInt32>(&pState->sync.cvHasWork, uState - uMin, uState) != uState)
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{
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uState = pState->sync.cvHasWork;
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if (uState < uMin)
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{
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uMin = uState;
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}
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}
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}
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} |