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gh-108520: Fix bad fork detection in nested multiprocessing use case #108568

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Merged
pitrou merged 9 commits into from
Aug 30, 2023
Merged

gh-108520: Fix bad fork detection in nested multiprocessing use case #108568

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ec4e7e0
Support nesting and add test
albanD Aug 28, 2023
1b62ab0
Cleanup test code
albanD Aug 30, 2023
9212635
Properly set is_fork_ctx in set_state
albanD Aug 30, 2023
c0ee443
Rename is_fork_ctx to _is_fork_ctx
albanD Aug 30, 2023
19225fc
📜🤖 Added by blurb_it.
blurb-it[bot] Aug 30, 2023
61d402d
Blurb nits
pitrou Aug 30, 2023
6eae967
Improve co
pitrou Aug 30, 2023
11e6b02
Merge branch 'main' into fix-issue-108520
pitrou Aug 30, 2023
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pitrou Aug 30, 2023
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@pitrou
pitrou authored Aug 30, 2023
commit 61d402db256a90dc11edd120553b29811d44a27a
3 changes: 2 additions & 1 deletion Misc/NEWS.d/next/Core and Builtins/2023-08-30-15-41-47.gh-issue-108520.u0ZGP_.rst
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Fix :meth:`multiprocessing.synchronize.SemLock.__setstate__` to properly initialize :attr:`multiprocessing.synchronize.SemLock._is_fork_ctx`. This fixes a regression when passing a SemLock accross nested processes.

Rename :attr:`multiprocessing.synchronize.SemLock.is_fork_ctx` to :attr:`multiprocessing.synchronize.SemLock._is_fork_ctx` to avoid exposing it as public API.
Fix :meth:`multiprocessing.synchronize.SemLock.__setstate__` to properly initialize :attr:`multiprocessing.synchronize.SemLock._is_fork_ctx`.