使用NamedPipe块读取文件,尽管使用重叠

pipeHandle = CreateFile(
            pipename,
            PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
            0,
            nullptr,
            OPEN_EXISTING,
            0,
            nullptr);

然后读取操作如下所示:

    OVERLAPPED overlapped;
        ZeroMemory(&overlapped, sizeof(OVERLAPPED));
        overlapped.hEvent = CreateEvent(nullptr, TRUE, FALSE, nullptr);
    successful = ReadFile(
            pipeHandle,
            buffer,
            4096 * sizeof(wchar_t),
            &numBytesRead,
            &overlapped
        );
    if (successful == FALSE)
    {
        LOG("Reading was not successful");
        if (GetLastError() != ERROR_IO_PENDING)
        {
            // The function call failed. ToDo: recovery.
            LOG_LAST_ERROR("Failed because of Error: ");
            return ERROR_READ_FAULT;
        }
        else
        {
            // TODO: add a timeout...
            successful = GetOverlappedResult(pipeHandle, &overlapped, &numBytesRead, TRUE);
        }
    }
    else
    {
        LOG("Reading was successful");
        // I/O completed:
        return ERROR_SUCCESS;
    }

现在,我希望对ReadFile的调用会立即返回,这样我就可以处理可能的超时,但它会一直阻塞,直到调用返回。