Repository navigation
gh-145685: Stop the world when updating MRO of existing types - #145707
Merged
colesbury merged 1 commit intoMar 9, 2026
Merged
colesbury merged 1 commit into
colesbury merged 1 commit into
Conversation
Copy link
Copy Markdown
Contributor
Sorry, something went wrong.
We already have a stop-the-world pause elsewhere in this code path (type_set_bases) and this makes will make it easier to avoid contention on the TYPE_LOCK when looking up names in the MRO hierarchy. Also use deferred reference counting for non-immortal MROs.
mpage
approved these changes
Mar 9, 2026
Copy link
Copy Markdown
|
Thanks @colesbury for the PR 🌮🎉.. I'm working now to backport this PR to: 3.14. |
Sorry, something went wrong.
Copy link
Copy Markdown
|
Sorry, @colesbury, I could not cleanly backport this to 3.14 due to a conflict. cherry_picker 0b65c88c2af6e09530a9aa21800771aa687371db 3.14 |
Sorry, something went wrong.
colesbury
added a commit
to colesbury/cpython
that referenced
this pull request
Mar 9, 2026
…types (pythongh-145707) We already have a stop-the-world pause elsewhere in this code path (type_set_bases) and this makes will make it easier to avoid contention on the TYPE_LOCK when looking up names in the MRO hierarchy. Also use deferred reference counting for non-immortal MROs. (cherry picked from commit 0b65c88) Co-authored-by: Sam Gross <colesbury@gmail.com>
Copy link
Copy Markdown
|
GH-145715 is a backport of this pull request to the 3.14 branch. |
Sorry, something went wrong.
colesbury
added a commit
that referenced
this pull request
Mar 10, 2026
…h-145707) (#145715) We already have a stop-the-world pause elsewhere in this code path (type_set_bases) and this makes will make it easier to avoid contention on the TYPE_LOCK when looking up names in the MRO hierarchy. Also use deferred reference counting for non-immortal MROs. (cherry picked from commit 0b65c88)
ljfp
pushed a commit
to ljfp/cpython
that referenced
this pull request
Apr 25, 2026
…ythongh-145707) We already have a stop-the-world pause elsewhere in this code path (type_set_bases) and this makes will make it easier to avoid contention on the TYPE_LOCK when looking up names in the MRO hierarchy. Also use deferred reference counting for non-immortal MROs.
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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Reviewers
Assignees
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.
We already have a stop-the-world pause elsewhere in this code path (type_set_bases) and this makes will make it easier to avoid contention on the TYPE_LOCK when looking up names in the MRO hierarchy.
Also use deferred reference counting for non-immortal MROs.