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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
051f326
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pitrou Aug 30, 2023
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@pitrou
pitrou authored Aug 30, 2023
commit 6eae9676d6b32537e69e298b4dc903916d5b5fc9
2 changes: 1 addition & 1 deletion Lib/multiprocessing/synchronize.py
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Expand Up @@ -115,7 +115,7 @@ def __setstate__(self, state):
self._semlock = _multiprocessing.SemLock._rebuild(*state)
util.debug('recreated blocker with handle %r' % state[0])
self._make_methods()
# SemLock created in fork context cannot be serialized
# Ensure that deserialized SemLock can be serialized again (gh-108568).
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self._is_fork_ctx = False

@staticmethod
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