gh-130373: Avoid locking in _LOAD_ATTR_WITH_HINT (#130372)

Avoid locking in _LOAD_ATTR_WITH_HINT
2025-03-28 15:16:41 -07:00
parent 00f0771e4d
commit 2984ff9e51
6 changed files with 72 additions and 46 deletions
--- a/Python/specialize.c
+++ b/Python/specialize.c
@@ -1009,6 +1009,9 @@ specialize_dict_access_hint(
    _PyAttrCache *cache = (_PyAttrCache *)(instr + 1);

    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(dict);
+#ifdef Py_GIL_DISABLED
+    _PyDict_EnsureSharedOnRead(dict);
+#endif

    // We found an instance with a __dict__.
    if (_PyDict_HasSplitTable(dict)) {