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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 /Include/internal/pycore_tstate.h | |
| 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 'Include/internal/pycore_tstate.h')
| -rw-r--r-- | Include/internal/pycore_tstate.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Include/internal/pycore_tstate.h b/Include/internal/pycore_tstate.h index 18c972b..f681b64 100644 --- a/Include/internal/pycore_tstate.h +++ b/Include/internal/pycore_tstate.h @@ -31,6 +31,16 @@ typedef struct _PyThreadStateImpl { struct _mimalloc_thread_state mimalloc; struct _Py_freelists freelists; struct _brc_thread_state brc; + struct { + // The thread-local refcounts for heap type objects + Py_ssize_t *refcounts; + + // Size of the refcounts array. + Py_ssize_t size; + + // If set, don't use thread-local refcounts + int is_finalized; + } types; #endif #if defined(Py_REF_DEBUG) && defined(Py_GIL_DISABLED) |