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Back out use of palloc0 in place if palloc/MemSet. Seems constant len

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to MemSet is a performance boost.
This commit is contained in:
Bruce Momjian
2002-11-11 03:02:20 +00:00
parent 5d283d89cb
commit 75fee4535d
38 changed files with 212 additions and 110 deletions
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5
src/backend/optimizer/path/allpaths.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.90 2002/11/10 07:25:13 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.91 2002/11/11 03:02:19 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -460,7 +460,8 @@ make_one_rel_by_joins(Query *root, int levels_needed, List *initial_rels)
* joinitems[j] is a list of all the j-item rels. Initially we set
* joinitems[1] to represent all the single-jointree-item relations.
*/
joinitems = (List **) palloc0((levels_needed + 1) * sizeof(List *));
joinitems = (List **) palloc((levels_needed + 1) * sizeof(List *));
MemSet(joinitems, 0, (levels_needed + 1) * sizeof(List *));
joinitems[1] = initial_rels;