Message 187482 - Python tracker

➜

This issue tracker has been migrated to GitHub , and is currently read-only.
For more information, see the GitHub FAQs in the Python's Developer Guide.

In-reply-to
Author	pitrou
Recipients	benjamin.peterson, ncoghlan, pitrou
Date	2013年04月21日.01:37:28
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1366508251.45.0.78173664702.issue17807@psf.upfronthosting.co.za>

Content
This experimental patch proposes to defer generator cleanup to the frame itself. In this scheme, the generator frame's tp_clear throws the GeneratorExit if necessary, so as to call cleanup code. The generator doesn't have any tp_del anymore, as it is now impossible to resurrect a generator (the frame, though, can be resurrected; I have to add a test for that). The net effect is that generators caught in a reference cycle can always be reclaimed, and their cleanup code is run in a valid frame.

Content

This experimental patch proposes to defer generator cleanup to the frame itself. In this scheme, the generator frame's tp_clear throws the GeneratorExit if necessary, so as to call cleanup code. The generator doesn't have any tp_del anymore, as it is now impossible to resurrect a generator (the frame, though, can be resurrected; I have to add a test for that).
The net effect is that generators caught in a reference cycle can always be reclaimed, and their cleanup code is run in a valid frame.

History
Date	User	Action	Args
2013年04月21日 01:37:32	pitrou	set	recipients: + pitrou, ncoghlan, benjamin.peterson
2013年04月21日 01:37:31	pitrou	set	messageid: <1366508251.45.0.78173664702.issue17807@psf.upfronthosting.co.za>
2013年04月21日 01:37:31	pitrou	link	issue17807 messages
2013年04月21日 01:37:31	pitrou	create

homepage