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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
Objects/genobject.c
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@ -43,7 +43,7 @@ _PyGen_Finalize(PyObject *self)
/* Save the current exception, if any. */
PyErr_Fetch(&error_type, &error_value, &error_traceback);
res = PyObject_CallFunctionObjArgs(finalizer, self, NULL);
res = _PyObject_CallArg1(finalizer, self);
if (res == NULL) {
PyErr_WriteUnraisable(self);
@ -591,7 +591,7 @@ _PyGen_SetStopIterationValue(PyObject *value)
*
* (See PyErr_SetObject/_PyErr_CreateException code for details.)
*/
e = PyObject_CallFunctionObjArgs(PyExc_StopIteration, value, NULL);
e = _PyObject_CallArg1(PyExc_StopIteration, value);
if (e == NULL) {
return -1;
}