Squash a few calls to the hideously expensive PyObject_CallObject(o,a)

-- replace then with slightly faster PyObject_Call(o,a,NULL).  (The
difference is that the latter requires a to be a tuple; the former
allows other values and wraps them in a tuple if necessary; it
involves two more levels of C function calls to accomplish all that.)

1 files changed, 6 insertions, 1 deletions

diff --git a/Objects/iterobject.c b/Objects/iterobject.c
index 4dc225a521..2e1caae543 100644
--- a/Objects/iterobject.c
+++ b/Objects/iterobject.c
@@ -163,7 +163,12 @@ static PyObject *
 calliter_iternext(calliterobject *it)
 {
 	if (it->it_callable != NULL) {
-		PyObject *result = PyObject_CallObject(it->it_callable, NULL);
+		PyObject *args = PyTuple_New(0);
+		PyObject *result;
+		if (args == NULL)
+			return NULL;
+		result = PyObject_Call(it->it_callable, args, NULL);
+		Py_DECREF(args);
 		if (result != NULL) {
 			int ok;
 			ok = PyObject_RichCompareBool(result,