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Account for shared keys in type's __sizeof__ (#13903).

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This commit is contained in:
Martin v. Loewis 2012-04-24 19:13:57 +02:00
parent f0c10f0840
commit 4f2f3b6217
4 changed files with 40 additions and 14 deletions
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18
Objects/typeobject.c
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@ -2730,6 +2730,22 @@ type_dir(PyObject *self, PyObject *args)
return result;
}
static PyObject*
type_sizeof(PyObject *self, PyObject *args_unused)
{
Py_ssize_t size;
PyTypeObject *type = (PyTypeObject*)self;
if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) {
PyHeapTypeObject* et = (PyHeapTypeObject*)type;
size = sizeof(PyHeapTypeObject);
if (et->ht_cached_keys)
size += _PyDict_KeysSize(et->ht_cached_keys);
}
else
size = sizeof(PyTypeObject);
return PyLong_FromSsize_t(size);
}
static PyMethodDef type_methods[] = {
{"mro", (PyCFunction)mro_external, METH_NOARGS,
PyDoc_STR("mro() -> list\nreturn a type's method resolution order")},
@ -2745,6 +2761,8 @@ static PyMethodDef type_methods[] = {
PyDoc_STR("__subclasscheck__() -> bool\ncheck if a class is a subclass")},
{"__dir__", type_dir, METH_NOARGS,
PyDoc_STR("__dir__() -> list\nspecialized __dir__ implementation for types")},
{"__sizeof__", type_sizeof, METH_NOARGS,
"__sizeof__() -> int\nreturn memory consumption of the type object"},
{0}
};