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60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
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// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Common/ProviderLock.h"
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namespace TraceServices
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{
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void FProviderLock::ReadAccessCheck(const FProviderLock* CurrentProviderLock, const int32& CurrentReadProviderLockCount, const int32& CurrentWriteAllocationsProviderLockCount) const
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{
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checkf(CurrentProviderLock == this && (CurrentReadProviderLockCount > 0 || CurrentWriteAllocationsProviderLockCount > 0),
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TEXT("Trying to READ from allocations provider outside of a READ scope"));
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}
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void FProviderLock::WriteAccessCheck(const int32& CurrentWriteAllocationsProviderLockCount) const
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{
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checkf(CurrentWriteAllocationsProviderLockCount > 0,
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TEXT("Trying to WRITE to provider outside of an EDIT/WRITE scope"));
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}
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void FProviderLock::BeginRead(FProviderLock*& CurrentProviderLock, int32& CurrentReadProviderLockCount, const int32& WriteAllocationsProviderLockCount)
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{
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checkf(WriteAllocationsProviderLockCount == 0, TEXT("Trying to lock allocations provider for READ while holding EDIT/WRITE access"));
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if (CurrentReadProviderLockCount++ == 0)
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{
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CurrentProviderLock = this;
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RWLock.ReadLock();
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}
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}
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void FProviderLock::EndRead(FProviderLock*& CurrentProviderLock, int32& CurrentReadProviderLockCount)
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{
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check(CurrentReadProviderLockCount > 0);
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if (--CurrentReadProviderLockCount == 0)
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{
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RWLock.ReadUnlock();
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CurrentProviderLock = nullptr;
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}
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}
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void FProviderLock::BeginWrite(FProviderLock*& CurrentProviderLock, const int32& CurrentReadProviderLockCount, int32& WriteAllocationsProviderLockCount)
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{
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check(!CurrentProviderLock || CurrentProviderLock == this);
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checkf(CurrentReadProviderLockCount == 0, TEXT("Trying to lock allocations provider for EDIT/WRITE while holding READ access"));
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if (WriteAllocationsProviderLockCount++ == 0)
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{
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CurrentProviderLock = this;
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RWLock.WriteLock();
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}
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}
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void FProviderLock::EndWrite(FProviderLock*& CurrentProviderLock, int32& WriteAllocationsProviderLockCount)
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{
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check(WriteAllocationsProviderLockCount > 0);
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if (--WriteAllocationsProviderLockCount == 0)
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{
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RWLock.WriteUnlock();
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CurrentProviderLock = nullptr;
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}
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}
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} // namespace TraceServices
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