Message 300491 - Python tracker

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In-reply-to
Author	pitrou
Recipients	JohanAR, davin, itamarst, ncoghlan, pitrou, python-dev, rhettinger, sbt, serhiy.storchaka, tim.peters, yselivanov, zzzeek
Date	2017年08月18日.11:35:33
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1503056134.07.0.115501783894.issue14976@psf.upfronthosting.co.za>

Content
`unfinished_tasks` is not a public attribute AFAIK (it's not documented). The change is necessary: you cannot increment unfinished_tasks in reentrant put(), since incrementing in pure Python is not atomic. So the incrementation is moved to get(), which probably cannot be made reentrant at all. If keeping the visible semantics of the `unfinished_tasks` attribute is important, we could make it a property that computes the desired value.

Content

`unfinished_tasks` is not a public attribute AFAIK (it's not documented).
The change is necessary: you cannot increment unfinished_tasks in reentrant put(), since incrementing in pure Python is not atomic. So the incrementation is moved to get(), which probably cannot be made reentrant at all.
If keeping the visible semantics of the `unfinished_tasks` attribute is important, we could make it a property that computes the desired value.

History
Date	User	Action	Args
2017年08月18日 11:35:34	pitrou	set	recipients: + pitrou, tim.peters, rhettinger, ncoghlan, zzzeek, python-dev, sbt, serhiy.storchaka, JohanAR, yselivanov, itamarst, davin
2017年08月18日 11:35:34	pitrou	set	messageid: <1503056134.07.0.115501783894.issue14976@psf.upfronthosting.co.za>
2017年08月18日 11:35:34	pitrou	link	issue14976 messages
2017年08月18日 11:35:33	pitrou	create

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