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| author | Sam Gross <colesbury@gmail.com> | 2024-02-16 16:22:27 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-02-16 16:22:27 (GMT) |
| commit | b24c9161a651f549ed48f4b4dba8996fe9cc4e09 (patch) | |
| tree | 549acacced5ca0b1923e0df94b40ef633c6cdf8f /Include/internal/pycore_tstate.h | |
| parent | f92857a93016aa26ba93959d2bdb690ef52e7f07 (diff) | |
| download | cpython-b24c9161a651f549ed48f4b4dba8996fe9cc4e09.zip cpython-b24c9161a651f549ed48f4b4dba8996fe9cc4e09.tar.gz cpython-b24c9161a651f549ed48f4b4dba8996fe9cc4e09.tar.bz2 | |
gh-112529: Make the GC scheduling thread-safe (#114880)
The GC keeps track of the number of allocations (less deallocations)
since the last GC. This buffers the count in thread-local state and uses
atomic operations to modify the per-interpreter count. The thread-local
buffering avoids contention on shared state.
A consequence is that the GC scheduling is not as precise, so
"test_sneaky_frame_object" is skipped because it requires that the GC be
run exactly after allocating a frame object.
Diffstat (limited to 'Include/internal/pycore_tstate.h')
| -rw-r--r-- | Include/internal/pycore_tstate.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Include/internal/pycore_tstate.h b/Include/internal/pycore_tstate.h index 97aa85a..7fb9ab2 100644 --- a/Include/internal/pycore_tstate.h +++ b/Include/internal/pycore_tstate.h @@ -28,6 +28,7 @@ typedef struct _PyThreadStateImpl { PyThreadState base; #ifdef Py_GIL_DISABLED + struct _gc_thread_state gc; struct _mimalloc_thread_state mimalloc; struct _Py_object_freelists freelists; struct _brc_thread_state brc; |