Message 294044 - Python tracker

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Author	grzgrzgrz3
Recipients	grzgrzgrz3
Date	2017-05-20.18:26:50
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1495304810.94.0.132011659563.issue30414@psf.upfronthosting.co.za>
In-reply-to

Content
multiprocessing.Queue is running background thread feeder. Feeder serialize and sends buffered data to pipe. The issue is with exception handling, feeder is catching all exceptions but out of main loop, so after exception is handled feeder is not going back to loop - thread finish. If feeder thread is not running any Queue.put will execute without exceptions but message not gonna be delivered. Solution is to move exception handling inside main loop. I will provide PR. I have run performance tests (found: #17025) and submitted patch do not affect performance.

multiprocessing.Queue is running background thread feeder. Feeder serialize and sends buffered data to pipe. 

The issue is with exception handling, feeder is catching all exceptions but out of main loop, so after exception is handled feeder is not going back to loop - thread finish. If feeder thread is not running any Queue.put will execute without exceptions but message not gonna be delivered.

Solution is to move exception handling inside main loop. I will provide PR.

I have run performance tests (found: #17025) and submitted patch do not affect performance.

History
Date	User	Action	Args
2017-05-20 18:26:50	grzgrzgrz3	set	recipients: + grzgrzgrz3
2017-05-20 18:26:50	grzgrzgrz3	set	messageid: <1495304810.94.0.132011659563.issue30414@psf.upfronthosting.co.za>
2017-05-20 18:26:50	grzgrzgrz3	link	issue30414 messages
2017-05-20 18:26:50	grzgrzgrz3	create