[PyQt] multiprocessing with QApplication
jeremy at jeremysanders.net
Mon Jun 11 19:39:18 BST 2012
Luke Campagnola wrote:
> I agree with you about the multiprocessing package--I really only use it
> for the ease of passing python objects between processes. (I use
> multiprocessing.Pipe(), which I believe uses the Listener/Client system
> you mentioned). I'll definitely try using this with subprocess instead.
> Thanks for the EINTR warning; I'm sure that would have taken another hour
> or two for me to work out :)
I've had a lot of problems with multiprocessing, too, especially if combined
If you're interested, you could have a look the cross-process communication
in veusz's embedding interface which uses sockets (sending pickled python
objects). Pipes don't work very well with Windows as they're not proper file
objects (you can't use QSocketNotifier on them).
It's a bit tied in with the main program, but should be fairly clear.
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