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[3.14] gh-132641: fix race in`lru_cache` under free-threading (GH-133787)#133979

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Merged

kumaraditya303 merged 1 commit intopython:3.14frommiss-islington:backport-9ad0c7b-3.14

May 14, 2025

Merged

[3.14] gh-132641: fix race in`lru_cache` under free-threading (GH-133787)#133979

kumaraditya303 merged 1 commit intopython:3.14frommiss-islington:backport-9ad0c7b-3.14

May 14, 2025

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miss-islington commentedMay 13, 2025•
edited by bedevere-appbot
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Fix race inlru_cache by acquiring critical section on the cache object itself and call the lock held variant of dict functions to modify the underlying dict.
(cherry picked from commit9ad0c7b)

Co-authored-by: Peter Hawkinsphawkins@google.com

Issue:Data race between compare_generic and insert_combined_dict under free-threading #132641

pythongh-132641: fix race inlru_cacheunder free-threading (python…

1594c26

…GH-133787)Fix race in `lru_cache` by acquiring critical section on the cache object itself and call the lock held variant of dict functions to modify the underlying dict.(cherry picked from commit9ad0c7b)Co-authored-by: Peter Hawkins <phawkins@google.com>