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Async reading fixes

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This commit is contained in:
Brian Fiete 2025-04-05 14:26:03 -04:00
parent 412729e536
commit d542f9a34b
1 changed files with 29 additions and 12 deletions
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41
BeefySysLib/platform/win/Platform.cpp
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@ -692,23 +692,34 @@ struct BfOverlappedReleaser
{
BfpAsyncData* mAsyncData;
OverlappedReadResult* mOverlapped;
bool mProducerFree;
bool mConsumerFree;
BfOverlappedReleaser()
{
mAsyncData = NULL;
mOverlapped = NULL;
mProducerFree = true;
mConsumerFree = true;
}
BfOverlappedReleaser(BfpAsyncData* asyncData, OverlappedReadResult* overlapped)
{
mAsyncData = asyncData;
mOverlapped = overlapped;
mProducerFree = true;
mConsumerFree = true;
}
~BfOverlappedReleaser()
{
if (mOverlapped != NULL)
mAsyncData->Release(mOverlapped);
{
if (mProducerFree)
mAsyncData->Release(mOverlapped);
if (mConsumerFree)
mAsyncData->Release(mOverlapped);
}
}
};
@ -742,7 +753,7 @@ struct BfpFile
};
static void WINAPI OverlappedReadComplete(DWORD dwErrorCode, DWORD dwNumberOfBytesTransfered, LPOVERLAPPED lpOverlapped)
{
{
OverlappedReadResult* readResult = (OverlappedReadResult*)lpOverlapped;
readResult->mFile->mAsyncData->HandleResult(readResult, dwErrorCode, dwNumberOfBytesTransfered);
}
@ -3322,6 +3333,16 @@ BFP_EXPORT intptr BFP_CALLTYPE BfpFile_Read(BfpFile* file, void* buffer, intptr
}
}
if (file->mAsyncData != NULL)
{
int readSize = file->mAsyncData->ReadQueued(buffer, (int)size);
if (readSize > 0)
{
OUTRESULT(BfpFileResult_Ok);
return readSize;
}
}
if ((timeoutMS != -1) && (!forceNormalRead))
{
if (file->mAsyncData == NULL)
@ -3331,27 +3352,21 @@ BFP_EXPORT intptr BFP_CALLTYPE BfpFile_Read(BfpFile* file, void* buffer, intptr
}
while (true)
{
int readSize = file->mAsyncData->ReadQueued(buffer, (int)size);
if (readSize > 0)
{
OUTRESULT(BfpFileResult_Ok);
return readSize;
}
{
OverlappedReadResult* overlapped = file->mAsyncData->AllocBuffer((int)size);
overlapped->mFile = file;
overlapped->mFile = file;
BfOverlappedReleaser overlappedReleaser(file->mAsyncData, overlapped);
//TODO: this doesn't set file stream location. It only works for streams like pipes, sockets, etc
if (::ReadFileEx(file->mHandle, overlapped->GetPtr(), (uint32)size, overlapped, OverlappedReadComplete))
{
overlappedReleaser.mProducerFree = false;
file->mAsyncData->WaitAndResetEvent(timeoutMS);
DWORD errorCode = 0;
int readResult = file->mAsyncData->FinishRead(overlapped, buffer, (int)size, errorCode);
overlappedReleaser.mOverlapped = NULL;
overlappedReleaser.mConsumerFree = false;
if (readResult != -2)
{
if (errorCode == 0)
@ -3382,6 +3397,8 @@ BFP_EXPORT intptr BFP_CALLTYPE BfpFile_Read(BfpFile* file, void* buffer, intptr
}
else
{
overlapped->mData.Clear();
int lastError = ::GetLastError();
if (lastError == ERROR_PIPE_LISTENING)
{