[3.14] gh-148393: Use acquire load for _ma_watcher_tag in dict notify event (gh-148509)#148512
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colesbury merged 1 commit intopython:3.14from Apr 13, 2026
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…event (pythongh-148509) The watcher-bits read in _PyDict_NotifyEvent needs to use acquire to synchronize with the release from PyDict_Watch so that the callback publication is visible before the callback is invoked. (cherry picked from commit 19f96f9) Co-authored-by: Sam Gross <colesbury@gmail.com>
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The watcher-bits read in _PyDict_NotifyEvent needs to use acquire to
synchronize with the release from PyDict_Watch so that the callback
publication is visible before the callback is invoked.
(cherry picked from commit 19f96f9)
Co-authored-by: Sam Gross colesbury@gmail.com
PyDict_WatchandPyDict_Unwatchshould use atomic operations in the free threading build #148393