Issue 30765: PyThread_acquire_lock can block even when asked not ot (original) (raw)

This issue has been migrated to GitHub: https://github.com/python/cpython/issues/74950

classification

Title: PyThread_acquire_lock can block even when asked not ot
Type: behavior Stage: resolved
Components: Interpreter Core Versions: Python 3.7, Python 3.6, Python 3.5, Python 2.7

process

Status: closed Resolution: fixed
Dependencies: Superseder:
Assigned To: Nosy List: ned.deily, pitrou, ronaldoussoren, vstinner
Priority: normal Keywords:

Created on 2017-06-26 12:27 by pitrou, last changed 2022-04-11 14:58 by admin. This issue is now closed.

Pull Requests
URL Status Linked Edit
PR 2403 merged pitrou,2017-06-26 12:36
PR 2418 merged pitrou,2017-06-26 18:46
PR 2419 merged pitrou,2017-06-26 18:51
PR 2420 merged pitrou,2017-06-26 18:56
Messages (6)
msg296886 - (view) Author: Antoine Pitrou (pitrou) * (Python committer) Date: 2017-06-26 12:27
Discovered in . When POSIX semaphores are not used for Python locks, pthread_mutex_lock() is called for acquiring a lock even when asked not to block. This can be disastrous when called from a signal handler.
msg296929 - (view) Author: Antoine Pitrou (pitrou) * (Python committer) Date: 2017-06-26 18:41
New changeset f84ac420c2af98339678744953869cad3c253281 by Antoine Pitrou in branch 'master': bpo-30765: Avoid blocking when PyThread_acquire_lock() is asked not to (#2403) https://github.com/python/cpython/commit/f84ac420c2af98339678744953869cad3c253281
msg296937 - (view) Author: Antoine Pitrou (pitrou) * (Python committer) Date: 2017-06-26 19:57
New changeset 55ab604e3fdb91baabe98d1c407b5910eeb31cef by Antoine Pitrou in branch '3.6': [3.6] bpo-30765: Avoid blocking when PyThread_acquire_lock() is asked not to (GH-2403) (#2418) https://github.com/python/cpython/commit/55ab604e3fdb91baabe98d1c407b5910eeb31cef
msg296939 - (view) Author: Antoine Pitrou (pitrou) * (Python committer) Date: 2017-06-26 20:07
New changeset 85b34edd8b575b918490afbcb0db6f791874dbdd by Antoine Pitrou in branch '3.5': [3.5] bpo-30765: Avoid blocking when PyThread_acquire_lock() is asked not to (GH-2403) (#2419) https://github.com/python/cpython/commit/85b34edd8b575b918490afbcb0db6f791874dbdd
msg296940 - (view) Author: Antoine Pitrou (pitrou) * (Python committer) Date: 2017-06-26 20:13
New changeset 828488393ca79f2ceb0acc2d7c30fb68baad85f8 by Antoine Pitrou in branch '2.7': [2.7] bpo-30765: Avoid blocking when PyThread_acquire_lock() is asked not to (GH-2403) (#2420) https://github.com/python/cpython/commit/828488393ca79f2ceb0acc2d7c30fb68baad85f8
msg296941 - (view) Author: Antoine Pitrou (pitrou) * (Python committer) Date: 2017-06-26 20:14
Travis-CI and the 3.x buildbots seem fine.
History
Date User Action Args
2022-04-11 14:58:48 admin set github: 74950
2017-06-26 20:14:13 pitrou set status: open -> closedresolution: fixedmessages: + stage: needs patch -> resolved
2017-06-26 20:13:41 pitrou set messages: +
2017-06-26 20:07:24 pitrou set messages: +
2017-06-26 19:57:31 pitrou set messages: +
2017-06-26 18:56:35 pitrou set pull_requests: + <pull%5Frequest2470>
2017-06-26 18:51:19 pitrou set pull_requests: + <pull%5Frequest2469>
2017-06-26 18:46:34 pitrou set pull_requests: + <pull%5Frequest2468>
2017-06-26 18:41:09 pitrou set messages: +
2017-06-26 14:25:53 pitrou unlink issue30703 dependencies
2017-06-26 12:44:15 pitrou link issue30703 dependencies
2017-06-26 12:36:14 pitrou set pull_requests: + <pull%5Frequest2450>
2017-06-26 12:27:17 pitrou create