private unsafe void _PipeIOCallback(uint errorCode, uint numBytes, NativeOverlapped *pOverlapped)
{
try
{
Exception error = null;
if (errorCode != 0)
{
error = new Win32Exception((int)errorCode, "Asynchronous operation on WinUSB device failed.");
}
Overlapped overlapped = Overlapped.Unpack(pOverlapped);
WinUSBAsyncResult result = (WinUSBAsyncResult)overlapped.AsyncResult;
Overlapped.Free(pOverlapped);
pOverlapped = null;
result.OnCompletion(false, error, (int)numBytes, true);
}
finally
{
if (pOverlapped != null)
{
Overlapped.Unpack(pOverlapped);
Overlapped.Free(pOverlapped);
}
}
}
private unsafe void _HandleOverlappedAPI(bool success, string errorMessage, NativeOverlapped *pOverlapped,
WinUSBAsyncResult result, int bytesTransferred)
{
if (!success)
{
if (Marshal.GetLastWin32Error() != NativeInterface.ERROR_IO_PENDING)
{
Overlapped.Unpack(pOverlapped);
Overlapped.Free(pOverlapped);
throw new Win32Exception(errorMessage);
}
}
else
{
// Immediate success!
Overlapped.Unpack(pOverlapped);
Overlapped.Free(pOverlapped);
result.OnCompletion(true, null, bytesTransferred, false);
}
}
private unsafe void _HandleOverlappedAPI(bool success, string errorMessage, NativeOverlapped* pOverlapped,
WinUSBAsyncResult result, int bytesTransferred)
{
if (!success)
{
if (Marshal.GetLastWin32Error() != NativeInterface.ERROR_IO_PENDING)
{
Overlapped.Unpack(pOverlapped);
Overlapped.Free(pOverlapped);
throw new Win32Exception(errorMessage);
}
}
else
{
// Immediate success!
Overlapped.Unpack(pOverlapped);
Overlapped.Free(pOverlapped);
result.OnCompletion(true, null, bytesTransferred, false);
}
}