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gh-96349: Fix minor performance regression initializing threading.Event #96350

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merged 1 commit into from
Aug 30, 2022
Merged

gh-96349: Fix minor performance regression initializing threading.Event #96350

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12 changes: 3 additions & 9 deletions Lib/threading.py
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Original file line number Diff line number Diff line change
Expand Up @@ -262,18 +262,12 @@ def __init__(self, lock=None):
# If the lock defines _release_save() and/or _acquire_restore(),
# these override the default implementations (which just call
# release() and acquire() on the lock). Ditto for _is_owned().
try:
if hasattr(lock, '_release_save'):
self._release_save = lock._release_save
except AttributeError:
pass
try:
if hasattr(lock, '_acquire_restore'):
self._acquire_restore = lock._acquire_restore
except AttributeError:
pass
try:
if hasattr(lock, '_is_owned'):
self._is_owned = lock._is_owned
except AttributeError:
pass
self._waiters = _deque()

def _at_fork_reinit(self):
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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2022-08-27-21-26-52.gh-issue-96349.XyYLlO.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Fixed a minor performance regression in :func:`threading.Event.__init__`