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gh-117657: Make PyType_HasFeature (exported version) atomic (#120484) 

Make PyType_HasFeature (exported version) atomic
This commit is contained in:
Ken Jin 2024-06-15 22:39:22 +08:00 committed by GitHub
parent 99d62f902e
commit 6f63dfff6f
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GPG Key ID: B5690EEEBB952194
2 changed files with 6 additions and 2 deletions
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4
Include/object.h
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@ -755,8 +755,12 @@ PyType_HasFeature(PyTypeObject *type, unsigned long feature)
#ifdef Py_LIMITED_API
// PyTypeObject is opaque in the limited C API
flags = PyType_GetFlags(type);
#else
# ifdef Py_GIL_DISABLED
flags = _Py_atomic_load_ulong_relaxed(&type->tp_flags);
# else
flags = type->tp_flags;
# endif
#endif
return ((flags & feature) != 0);
}

2
Objects/typeobject.c
View File

@ -3599,7 +3599,7 @@ type_init(PyObject *cls, PyObject *args, PyObject *kwds)
unsigned long
PyType_GetFlags(PyTypeObject *type)
{
return type->tp_flags;
return FT_ATOMIC_LOAD_ULONG_RELAXED(type->tp_flags);
}