[3.13] gh-118789: Add PyUnstable_Object_ClearWeakRefsNoCallbacks (GH-118807)
#120695
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
…thonGH-118807) This exposes `PyUnstable_Object_ClearWeakRefsNoCallbacks` as an unstable C-API function to provide a thread-safe mechanism for clearing weakrefs without executing callbacks. Some C-API extensions need to clear weakrefs without calling callbacks, such as after running finalizers like we do in subtype_dealloc. Previously they could use `_PyWeakref_ClearRef` on each weakref, but that's not thread-safe in the free-threaded build. (cherry picked from commit e8752d7) Co-authored-by: Sam Gross <colesbury@gmail.com> Co-authored-by: Petr Viktorin <encukou@gmail.com>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This exposes
PyUnstable_Object_ClearWeakRefsNoCallbacksas an unstableC-API function to provide a thread-safe mechanism for clearing weakrefs
without executing callbacks.
Some C-API extensions need to clear weakrefs without calling callbacks,
such as after running finalizers like we do in subtype_dealloc.
Previously they could use
_PyWeakref_ClearRefon each weakref, butthat's not thread-safe in the free-threaded build.
(cherry picked from commit e8752d7)
Co-authored-by: Sam Gross colesbury@gmail.com
Co-authored-by: Petr Viktorin encukou@gmail.com
_PyWeakref_ClearRefand_PyWeakref_ClearWeakRefsExceptCallbacksshould be exposed in 3.13 #118789📚 Documentation preview 📚: https://cpython-previews--120695.org.readthedocs.build/