Issue 33688: asyncio child watchers aren't fork friendly

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classification

Title:	asyncio child watchers aren't fork friendly
Type:		Stage:
Components:	asyncio	Versions:	Python 3.8, Python 3.7

process

Status:	open	Resolution:
Dependencies:		Superseder:
Assigned To:		Nosy List:	asvetlov, yselivanov, zmedico
Priority:	normal	Keywords:

Created on 2018-05-29 22:45 by yselivanov, last changed 2018-05-29 22:56 by zmedico.

Messages (1)
msg318133 - (view)	Author: Yury Selivanov (yselivanov) *	Date: 2018-05-29 22:45
_UnixDefaultEventLoopPolicy doesn't detect fork and tries to re-use the inherited child watcher. [1] is my idea how to fix this. Andrew, AFAIK subprocesses was something that you worked on at some point. Do you have time to look into this? Need tests and I'm not sure if I got [1] quite right. This probably won't make it to 3.7.0, but 3.7.1 seems like a good target. [1] https://github.com/1st1/cpython/commit/b4e6b26c565d9417a6f57a794a4669d7a7eeae88

msg318133 - (view)

Author: Yury Selivanov (yselivanov) * (Python committer)

Date: 2018-05-29 22:45

_UnixDefaultEventLoopPolicy doesn't detect fork and tries to re-use the inherited child watcher. [1] is my idea how to fix this.

Andrew, AFAIK subprocesses was something that you worked on at some point. Do you have time to look into this?  Need tests and I'm not sure if I got [1] quite right.

This probably won't make it to 3.7.0, but 3.7.1 seems like a good target.

[1] https://github.com/1st1/cpython/commit/b4e6b26c565d9417a6f57a794a4669d7a7eeae88

History
Date	User	Action	Args
2018-05-29 22:56:08	zmedico	set	nosy: + zmedico
2018-05-29 22:45:03	yselivanov	create