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bpo-40170: PyType_HasFeature() now always calls PyType_GetFlags() (GH-19378)

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PyType_HasFeature() now always calls PyType_GetFlags() to hide
implementation details. Previously, it accessed directly the
PyTypeObject.tp_flags member when the limited C API was not used.

Add fast inlined version _PyType_HasFeature() and _PyType_IS_GC()
for object.c and typeobject.c.
This commit is contained in:
Victor Stinner 2020-04-08 01:42:27 +02:00 • committed by GitHub
parent ef5c615f5a
commit 45ec5b99ae
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5 changed files with 46 additions and 30 deletions
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11
Include/internal/pycore_object.h
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@ -8,7 +8,7 @@ extern "C" {
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_pystate.h" /* _PyRuntime.gc */
#include "pycore_pystate.h" /* PyInterpreterState.gc */
PyAPI_FUNC(int) _PyType_CheckConsistency(PyTypeObject *type);
PyAPI_FUNC(int) _PyDict_CheckConsistency(PyObject *mp, int check_content);
@ -94,6 +94,15 @@ _PyObject_GET_WEAKREFS_LISTPTR(PyObject *op)
return (PyObject **)((char *)op + offset);
}
// Fast inlined version of PyType_HasFeature()
static inline int
_PyType_HasFeature(PyTypeObject *type, unsigned long feature) {
return ((type->tp_flags & feature) != 0);
}
// Fast inlined version of PyType_IS_GC()
#define _PyType_IS_GC(t) _PyType_HasFeature((t), Py_TPFLAGS_HAVE_GC)
#ifdef __cplusplus
}
#endif