[Python-checkins] python/dist/src/Objects listobject.c,2.192,2.193

[rhettinger at users.sourceforge.net]

Update of /cvsroot/python/python/dist/src/Objects
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv9496

Modified Files:
	listobject.c 
Log Message:
Now that list.extend() is at the root of many list operations, it becomes
worth it to in-line the call to PyIter_Next(). 

Saves another 15% on most list operations that acceptable a general 
iterable argument (such as the list constructor).



Index: listobject.c
===================================================================
RCS file: /cvsroot/python/python/dist/src/Objects/listobject.c,v
retrieving revision 2.192
retrieving revision 2.193
diff -C2 -d -r2.192 -r2.193
*** listobject.c	11 Mar 2004 09:13:12 -0000	2.192
--- listobject.c	11 Mar 2004 09:48:18 -0000	2.193
***************
*** 716,719 ****
--- 716,720 ----
  	int mn;		   /* m + n */
  	int i;
+ 	PyObject *(*iternext)(PyObject *);
  
  	/* Special cases:
***************
*** 733,736 ****
--- 734,738 ----
  	if (it == NULL)
  		return NULL;
+ 	iternext = *it->ob_type->tp_iternext;
  
  	/* Guess a result list size. */
***************
*** 748,755 ****
  	/* Run iterator to exhaustion. */
  	for (i = m; ; i++) {
! 		PyObject *item = PyIter_Next(it);
  		if (item == NULL) {
! 			if (PyErr_Occurred())
! 				goto error;
  			break;
  		}
--- 750,761 ----
  	/* Run iterator to exhaustion. */
  	for (i = m; ; i++) {
! 		PyObject *item = iternext(it);
  		if (item == NULL) {
! 			if (PyErr_Occurred()) {
! 				if (PyErr_ExceptionMatches(PyExc_StopIteration))
! 					PyErr_Clear();
! 				else
! 					goto error;
! 			}
  			break;
  		}