gh-102512: Fix threading after os.fork() called from a foreign thread #113261

serhiy-storchaka · 2023-12-18T20:56:50Z

Based on #102517. It recreates a _DummyThread as _MainThread after fork.

Issue: os.fork() called from DummyThread confuses threading shutdown logic #102512

If os.fork() is called from a DummyThread (a thread started not by the threading module, in which somebody called threading.current_thread()), it becomes main thread. Threading shutdown logic relies on the main thread having tstate_lock, so initialize it for the DummyThread too. Fixes python#102512

marmarek and others added 5 commits March 8, 2023 00:13

Add regression test for pythongh-102512

59ace50

Add NEWS entry

9d186b3

Merge branch 'main' into bug102512

e802f6c

Recreate a _DummyThread as _MainThread after fork.

40b647e

bedevere-app bot added the awaiting core review label Dec 18, 2023

bedevere-app bot mentioned this pull request Dec 18, 2023

os.fork() called from DummyThread confuses threading shutdown logic #102512

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gh-102512: Fix threading after os.fork() called from a foreign thread #113261

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gh-102512: Fix threading after os.fork() called from a foreign thread #113261

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serhiy-storchaka commented Dec 18, 2023 • edited by bedevere-app bot

serhiy-storchaka commented Dec 18, 2023 •

edited by bedevere-app bot