This reverts commit b54c347424
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Revert async file handle change as it causes failures with appveyor
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6a14f7a976
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e8115cea45
@ -124,8 +124,6 @@ SSIZE_T pwrite(HANDLE hFile, const char* src, size_t numBytes,
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}
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// See comments for pwrite above
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// PLEASE NOTE: hFile is expected to be an async handle
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// (i.e. opened with FILE_FLAG_OVERLAPPED)
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SSIZE_T pread(HANDLE hFile, char* src, size_t numBytes, uint64_t offset) {
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assert(numBytes <= std::numeric_limits<DWORD>::max());
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OVERLAPPED overlapped = {0};
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@ -134,33 +132,18 @@ SSIZE_T pread(HANDLE hFile, char* src, size_t numBytes, uint64_t offset) {
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overlapped.Offset = offsetUnion.LowPart;
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overlapped.OffsetHigh = offsetUnion.HighPart;
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overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
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if (NULL == overlapped.hEvent) {
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return -1;
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}
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SSIZE_T result = 0;
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unsigned long bytesRead = 0;
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DWORD lastError = ERROR_SUCCESS;
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if ((FALSE == ReadFile(hFile, src, static_cast<DWORD>(numBytes), &bytesRead,
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&overlapped)) && ((lastError = GetLastError()) != ERROR_IO_PENDING)) {
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result = (lastError == ERROR_HANDLE_EOF) ? 0 : -1;
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if (FALSE == ReadFile(hFile, src, static_cast<DWORD>(numBytes), &bytesRead,
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&overlapped)) {
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return -1;
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} else {
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if (lastError == ERROR_IO_PENDING) { //otherwise bytesRead already has the result
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if (FALSE == GetOverlappedResult(hFile, &overlapped, &bytesRead, TRUE)) {
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result = (GetLastError() == ERROR_HANDLE_EOF) ? 0 : -1;
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}
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else {
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result = bytesRead;
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}
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}
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result = bytesRead;
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}
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CloseHandle(overlapped.hEvent);
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return result;
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}
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@ -701,8 +684,6 @@ class WinSequentialFile : public SequentialFile {
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// pread() based random-access
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class WinRandomAccessFile : public RandomAccessFile {
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const std::string filename_;
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// PLEASE NOTE: hFile is expected to be an async handle
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// (i.e. opened with FILE_FLAG_OVERLAPPED)
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HANDLE hFile_;
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const bool use_os_buffer_;
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bool read_ahead_;
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@ -1244,12 +1225,6 @@ class WinEnv : public Env {
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fileFlags |= FILE_FLAG_RANDOM_ACCESS;
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}
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if (!options.use_mmap_reads) {
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// Open in async mode which makes Windows allow more parallelism even
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// if we need to do sync I/O on top of it.
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fileFlags |= FILE_FLAG_OVERLAPPED;
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}
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/// Shared access is necessary for corruption test to pass
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// almost all tests would work with a possible exception of fault_injection
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HANDLE hFile = 0;
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