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-rw-r--r--Objects/frameobject.c25
1 files changed, 24 insertions, 1 deletions
diff --git a/Objects/frameobject.c b/Objects/frameobject.c
index 48fc2ca0ee..035c2c57ea 100644
--- a/Objects/frameobject.c
+++ b/Objects/frameobject.c
@@ -513,6 +513,29 @@ frame_clear(PyFrameObject *f)
}
}
+static PyObject *
+frame_sizeof(PyFrameObject *f)
+{
+ Py_ssize_t res, extras, ncells, nfrees;
+
+ ncells = PyTuple_GET_SIZE(f->f_code->co_cellvars);
+ nfrees = PyTuple_GET_SIZE(f->f_code->co_freevars);
+ extras = f->f_code->co_stacksize + f->f_code->co_nlocals +
+ ncells + nfrees;
+ // subtract one as it is already included in PyFrameObject
+ res = sizeof(PyFrameObject) + (extras-1) * sizeof(PyObject *);
+
+ return PyLong_FromSsize_t(res);
+}
+
+PyDoc_STRVAR(sizeof__doc__,
+"F.__sizeof__() -> size of F in memory, in bytes");
+
+static PyMethodDef frame_methods[] = {
+ {"__sizeof__", (PyCFunction)frame_sizeof, METH_NOARGS,
+ sizeof__doc__},
+ {NULL, NULL} /* sentinel */
+};
PyTypeObject PyFrame_Type = {
PyVarObject_HEAD_INIT(&PyType_Type, 0)
@@ -542,7 +565,7 @@ PyTypeObject PyFrame_Type = {
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
- 0, /* tp_methods */
+ frame_methods, /* tp_methods */
frame_memberlist, /* tp_members */
frame_getsetlist, /* tp_getset */
0, /* tp_base */