Re: interrupt handing and the GUI (bug #37672)

[John W. Eaton]

On 11/10/2013 10:45 PM, Daniel J Sebald wrote:

> The last answer at this link seems to know more than the rest of us:
>
> http://stackoverflow.com/questions/12820765/can-i-send-signals-to-different-threads
>
> Maybe there is something there.

Yes, it mentions pthread_kill.  That appears to allow us to direct a
signal to a particular thread.

I'm attaching a patch that seems to at least partially work for me.
At least interrupts seem to work now inside sleep and long running
functions like "inv (large_matrix)", but now I also get random
segfaults when typing Ctrl-C in the command window after a few
interrupts have been processed (it seems random).

I don't expect it will work on Windows.  I suppose it just
happens to work for me because Qt is using pthreads on my system.
What if Qt doesn't use pthreads?

jwe

threading.diffs
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