Alex Burr added the comment:
I don't need to change my code as I have now worked round the problem,
but for an example of why someone might want nonblocking mode:
It was not actually in order to do any more work, but because I was
managing both input and output to gdb in one thread
Alex Burr added the comment:
The exception would count as a warning if it wasn't EGAIN. One expects
to catch EGAIN and try again.
The current situation is unfortunate because it *nearly* works. My
scenario is: I'm driving GDB/MI via popen2.Popen3 ( gdbCommand, False,1).
It works fo
New submission from Alex Burr:
If you have made a file nonblocking using fcntl.fcntl, .readline() will
discard the start of a line if you get EGAIN. It should attach the
partial line to the exception somehow - or at least warn the user.
I observe this on 2.3.5, but the same code exists in
