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| author | Sam Gross <colesbury@gmail.com> | 2024-08-06 18:36:57 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-08-06 18:36:57 (GMT) |
| commit | dc093010672207176857a747c61da9c046ad9d3e (patch) | |
| tree | 3eeff2ad72faa7781255016cc0f54c45aecd41d7 /Misc/NEWS.d | |
| parent | 1429651a06611a9dbcb1928b746faf52934c12e2 (diff) | |
| download | cpython-dc093010672207176857a747c61da9c046ad9d3e.zip cpython-dc093010672207176857a747c61da9c046ad9d3e.tar.gz cpython-dc093010672207176857a747c61da9c046ad9d3e.tar.bz2 | |
gh-122417: Implement per-thread heap type refcounts (#122418)
The free-threaded build partially stores heap type reference counts in
distributed manner in per-thread arrays. This avoids reference count
contention when creating or destroying instances.
Co-authored-by: Ken Jin <kenjin@python.org>
Diffstat (limited to 'Misc/NEWS.d')
| -rw-r--r-- | Misc/NEWS.d/next/Core_and_Builtins/2024-07-29-19-20-25.gh-issue-122417.NVgs0a.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-07-29-19-20-25.gh-issue-122417.NVgs0a.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-07-29-19-20-25.gh-issue-122417.NVgs0a.rst new file mode 100644 index 0000000..b050c9c --- /dev/null +++ b/Misc/NEWS.d/next/Core_and_Builtins/2024-07-29-19-20-25.gh-issue-122417.NVgs0a.rst @@ -0,0 +1,4 @@ +In the free-threaded build, the reference counts for heap type objects are now +partially stored in a distributed manner in per-thread arrays. This reduces +contention on the heap type's reference count fields when creating or +destroying instances of the same type from multiple threads concurrently. |