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bpo-44962 fix a race in WeakKeyDict, WeakValueDict and WeakSet when two threads attempt to commit the last pending removal #27921

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Merged
ambv merged 10 commits into from
Aug 28, 2021
+28 −12
Merged

bpo-44962 fix a race in WeakKeyDict, WeakValueDict and WeakSet when two threads attempt to commit the last pending removal #27921

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5a0dc76
bpo-44962 fix a race in WeakSet
graingert Aug 23, 2021
3f74f24
📜🤖 Added by blurb_it.
blurb-it[bot] Aug 23, 2021
08f31cb
Update Misc/NEWS.d/next/Core and Builtins/2021-08-23-19-55-08.bpo-449…
graingert Aug 24, 2021
738dc9a
fix races in WeakKeyDict and WeakValueDict
graingert Aug 24, 2021
f3585ef
catch KeyError in WeakKeyDict callback
graingert Aug 24, 2021
6476722
Update Misc/NEWS.d/next/Core and Builtins/2021-08-23-19-55-08.bpo-449…
graingert Aug 24, 2021
36fd3f0
Update Misc/NEWS.d/next/Core and Builtins/2021-08-23-19-55-08.bpo-449…
graingert Aug 24, 2021
54a0032
Update Lib/weakref.py
graingert Aug 28, 2021
aada0e4
cache _atomic_removal in WeakValueDictionary._commit_removals
graingert Aug 28, 2021
b2b25d0
remove redundant else clauses
graingert Aug 28, 2021
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Update Misc/NEWS.d/next/Core and Builtins/2021-08-23-19-55-08.bpo-44962… 
….J00ftt.rst
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@graingert
graingert authored Aug 24, 2021
commit 08f31cb8b188550b52d428b55c7e41da98fa0846
2 changes: 1 addition & 1 deletion Misc/NEWS.d/next/Core and Builtins/2021-08-23-19-55-08.bpo-44962.J00ftt.rst
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fix a race in WeakSet
Fix a race in WeakSet when two threads attempt to commit the last pending removal. This fixes asyncio.create_task and fixes a data loss in asyncio.run where shutdown_asyncgens is not run
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