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gh-112075: Dictionary global version counter should use atomic increments (#114568)

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Dictionary global version counter should use atomic increments
This commit is contained in:
Dino Viehland
2024-01-29 09:47:54 -08:00
committed by GitHub
parent 3d716655d2
commit 0cd9bacb8a
1 changed files with 6 additions and 0 deletions
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Include/internal/pycore_dict.h
+6
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@@ -209,8 +209,14 @@ static inline PyDictUnicodeEntry* DK_UNICODE_ENTRIES(PyDictKeysObject *dk) {
#define DICT_VERSION_INCREMENT (1 << DICT_MAX_WATCHERS)
#define DICT_VERSION_MASK (DICT_VERSION_INCREMENT - 1)
#ifdef Py_GIL_DISABLED
#define DICT_NEXT_VERSION(INTERP) \
(_Py_atomic_add_uint64(&(INTERP)->dict_state.global_version, DICT_VERSION_INCREMENT) + DICT_VERSION_INCREMENT)
#else
#define DICT_NEXT_VERSION(INTERP) \
((INTERP)->dict_state.global_version += DICT_VERSION_INCREMENT)
#endif
void
_PyDict_SendEvent(int watcher_bits,