Replace PyObject_CallFunctionObjArgs() with fastcall

* PyObject_CallFunctionObjArgs(func, NULL) => _PyObject_CallNoArg(func)
* PyObject_CallFunctionObjArgs(func, arg, NULL) => _PyObject_CallArg1(func, arg)

PyObject_CallFunctionObjArgs() allocates 40 bytes on the C stack and requires
extra work to "parse" C arguments to build a C array of PyObject*.

_PyObject_CallNoArg() and _PyObject_CallArg1() are simpler and don't allocate
memory on the C stack.

This change is part of the fastcall project. The change on listsort() is
related to the issue #23507.
This commit is contained in:
Victor Stinner 2016-12-01 14:43:22 +01:00
parent 8be1c39eb3
commit 27580c1fb5
33 changed files with 71 additions and 83 deletions

View file

@ -273,7 +273,7 @@ try_complex_special_method(PyObject *op) {
f = _PyObject_LookupSpecial(op, &PyId___complex__);
if (f) {
PyObject *res = PyObject_CallFunctionObjArgs(f, NULL);
PyObject *res = _PyObject_CallNoArg(f);
Py_DECREF(f);
if (res != NULL && !PyComplex_Check(res)) {
PyErr_SetString(PyExc_TypeError,