[Python-checkins] python/dist/src/Objects abstract.c,2.121,2.122

[rhettinger at users.sourceforge.net]

Update of /cvsroot/python/python/dist/src/Objects
In directory sc8-pr-cvs1:/tmp/cvs-serv5064/Objects

Modified Files:
	abstract.c 
Log Message:
Apply pre-sizing optimization to a broader class of objects. 
Formerly, the length was only fetched from sequence objects. 
Now, any object that reports its length can benefit from pre-sizing.



Index: abstract.c
===================================================================
RCS file: /cvsroot/python/python/dist/src/Objects/abstract.c,v
retrieving revision 2.121
retrieving revision 2.122
diff -C2 -d -r2.121 -r2.122
*** abstract.c	4 Jan 2004 06:08:16 -0000	2.121
--- abstract.c	4 Jan 2004 11:00:08 -0000	2.122
***************
*** 1449,1461 ****
  
  	/* Guess a result list size. */
! 	n = -1;	 /* unknown */
! 	if (PySequence_Check(v) &&
! 	    v->ob_type->tp_as_sequence->sq_length) {
! 		n = PySequence_Size(v);
! 		if (n < 0)
! 			PyErr_Clear();
! 	}
! 	if (n < 0)
  		n = 8;	/* arbitrary */
  	result = PyList_New(n);
  	if (result == NULL) {
--- 1449,1457 ----
  
  	/* Guess a result list size. */
! 	n = PyObject_Size(v);
! 	if (n < 0) {
! 		PyErr_Clear();
  		n = 8;	/* arbitrary */
+ 	}
  	result = PyList_New(n);
  	if (result == NULL) {