[Python-checkins] python/dist/src/Python bltinmodule.c,2.306,2.307

[rhettinger at users.sourceforge.net]

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

Modified Files:
	bltinmodule.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: bltinmodule.c
===================================================================
RCS file: /cvsroot/python/python/dist/src/Python/bltinmodule.c,v
retrieving revision 2.306
retrieving revision 2.307
diff -C2 -d -r2.306 -r2.307
*** bltinmodule.c	4 Jan 2004 08:54:44 -0000	2.306
--- bltinmodule.c	4 Jan 2004 11:00:07 -0000	2.307
***************
*** 154,166 ****
  
  	/* Guess a result list size. */
! 	len = -1;   /* unknown */
! 	if (PySequence_Check(seq) &&
! 	    seq->ob_type->tp_as_sequence->sq_length) {
! 		len = PySequence_Size(seq);
! 		if (len < 0)
! 			PyErr_Clear();
  	}
- 	if (len < 0)
- 		len = 8;  /* arbitrary */
  
  	/* Pre-allocate argument list tuple. */
--- 154,162 ----
  
  	/* Guess a result list size. */
! 	len = PyObject_Size(seq);
! 	if (len < 0) {
! 		PyErr_Clear();
! 		len = 8;	/* arbitrary */
  	}
  
  	/* Pre-allocate argument list tuple. */