mirror of https://github.com/python/cpython
bpo-46131: add fastpath for PyFloat_Check() (#30200)
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@ -1145,6 +1145,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
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.. XXX Document more flags here?
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.. data:: Py_TPFLAGS_FLOAT_SUBCLASS
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.. data:: Py_TPFLAGS_LONG_SUBCLASS
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.. data:: Py_TPFLAGS_LIST_SUBCLASS
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.. data:: Py_TPFLAGS_TUPLE_SUBCLASS
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@ -14,6 +14,8 @@ extern "C" {
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PyAPI_DATA(PyTypeObject) PyFloat_Type;
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#define PyFloat_Check(op) PyObject_TypeCheck(op, &PyFloat_Type)
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#define PyFloat_Check(op) \
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PyType_FastSubclass(Py_TYPE(op), Py_TPFLAGS_FLOAT_SUBCLASS)
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#define PyFloat_CheckExact(op) Py_IS_TYPE(op, &PyFloat_Type)
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#ifdef Py_NAN
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@ -397,6 +397,7 @@ given type object has a specified feature.
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#define _Py_TPFLAGS_MATCH_SELF (1UL << 22)
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/* These flags are used to determine if a type is a subclass. */
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#define Py_TPFLAGS_FLOAT_SUBCLASS (1UL << 23)
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#define Py_TPFLAGS_LONG_SUBCLASS (1UL << 24)
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#define Py_TPFLAGS_LIST_SUBCLASS (1UL << 25)
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#define Py_TPFLAGS_TUPLE_SUBCLASS (1UL << 26)
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@ -0,0 +1,2 @@
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Add a fast path for ``PyFloat_Check`` via a ``Py_TPFLAGS_FLOAT_SUBCLASS``
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flag.
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@ -1959,6 +1959,7 @@ PyTypeObject PyFloat_Type = {
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0, /* tp_setattro */
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0, /* tp_as_buffer */
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Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
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Py_TPFLAGS_FLOAT_SUBCLASS |
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_Py_TPFLAGS_MATCH_SELF, /* tp_flags */
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float_new__doc__, /* tp_doc */
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0, /* tp_traverse */
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@ -5783,6 +5783,9 @@ inherit_special(PyTypeObject *type, PyTypeObject *base)
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else if (PyType_IsSubtype(base, &PyDict_Type)) {
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type->tp_flags |= Py_TPFLAGS_DICT_SUBCLASS;
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}
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else if (PyType_IsSubtype(base, &PyFloat_Type)) {
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type->tp_flags |= Py_TPFLAGS_FLOAT_SUBCLASS;
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}
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if (PyType_HasFeature(base, _Py_TPFLAGS_MATCH_SELF)) {
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type->tp_flags |= _Py_TPFLAGS_MATCH_SELF;
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}
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@ -85,6 +85,7 @@ _is_pep393 = None
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Py_TPFLAGS_MANAGED_DICT = (1 << 4)
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Py_TPFLAGS_HEAPTYPE = (1 << 9)
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Py_TPFLAGS_FLOAT_SUBCLASS = (1 << 23)
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Py_TPFLAGS_LONG_SUBCLASS = (1 << 24)
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Py_TPFLAGS_LIST_SUBCLASS = (1 << 25)
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Py_TPFLAGS_TUPLE_SUBCLASS = (1 << 26)
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@ -379,6 +380,8 @@ class PyObjectPtr(object):
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if tp_flags & Py_TPFLAGS_HEAPTYPE:
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return HeapTypeObjectPtr
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if tp_flags & Py_TPFLAGS_FLOAT_SUBCLASS:
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return PyFloatObjectPtr
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if tp_flags & Py_TPFLAGS_LONG_SUBCLASS:
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return PyLongObjectPtr
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if tp_flags & Py_TPFLAGS_LIST_SUBCLASS:
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@ -910,6 +913,16 @@ class PyNoneStructPtr(PyObjectPtr):
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def proxyval(self, visited):
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return None
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class PyFloatObjectPtr(PyObjectPtr):
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_typename = 'PyFloatObject'
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def proxyval(self, visited):
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return self.field('ob_fval')
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def write_repr(self, out, visited):
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proxy = self.proxyval(visited)
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out.write("%s" % proxy)
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class PyFrameObjectPtr(PyObjectPtr):
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_typename = 'PyFrameObject'
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