diff options
| -rw-r--r-- | Objects/object.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/Objects/object.c b/Objects/object.c index 2e9962f..b773047 100644 --- a/Objects/object.c +++ b/Objects/object.c @@ -401,24 +401,27 @@ Py_ssize_t _Py_ExplicitMergeRefcount(PyObject *op, Py_ssize_t extra) { assert(!_Py_IsImmortal(op)); + +#ifdef Py_REF_DEBUG + _Py_AddRefTotal(_PyThreadState_GET(), extra); +#endif + + // gh-119999: Write to ob_ref_local and ob_tid before merging the refcount. + Py_ssize_t local = (Py_ssize_t)op->ob_ref_local; + _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, 0); + _Py_atomic_store_uintptr_relaxed(&op->ob_tid, 0); + Py_ssize_t refcnt; Py_ssize_t new_shared; Py_ssize_t shared = _Py_atomic_load_ssize_relaxed(&op->ob_ref_shared); do { refcnt = Py_ARITHMETIC_RIGHT_SHIFT(Py_ssize_t, shared, _Py_REF_SHARED_SHIFT); - refcnt += (Py_ssize_t)op->ob_ref_local; + refcnt += local; refcnt += extra; new_shared = _Py_REF_SHARED(refcnt, _Py_REF_MERGED); } while (!_Py_atomic_compare_exchange_ssize(&op->ob_ref_shared, &shared, new_shared)); - -#ifdef Py_REF_DEBUG - _Py_AddRefTotal(_PyThreadState_GET(), extra); -#endif - - _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, 0); - _Py_atomic_store_uintptr_relaxed(&op->ob_tid, 0); return refcnt; } #endif /* Py_GIL_DISABLED */ |