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Replace PyObject_CallFunctionObjArgs() with fastcall

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* 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
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4
Modules/posixmodule.c
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@ -902,7 +902,7 @@ path_converter(PyObject *o, void *p)
goto error_exit;
}
o = to_cleanup = PyObject_CallFunctionObjArgs(func, NULL);
o = to_cleanup = _PyObject_CallNoArg(func);
Py_DECREF(func);
if (NULL == o) {
goto error_exit;
@ -12041,7 +12041,7 @@ PyOS_FSPath(PyObject *path)
Py_TYPE(path)->tp_name);
}
path_repr = PyObject_CallFunctionObjArgs(func, NULL);
path_repr = _PyObject_CallNoArg(func);
Py_DECREF(func);
if (NULL == path_repr) {
return NULL;