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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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15
src/backend/executor/execMain.c
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@ -27,7 +27,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.182 2002/11/10 07:25:13 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.183 2002/11/11 03:02:18 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -106,8 +106,12 @@ ExecutorStart(QueryDesc *queryDesc, EState *estate)
Assert(queryDesc != NULL);
if (queryDesc->plantree->nParamExec > 0)
{
estate->es_param_exec_vals = (ParamExecData *)
palloc0(queryDesc->plantree->nParamExec * sizeof(ParamExecData));
palloc(queryDesc->plantree->nParamExec * sizeof(ParamExecData));
MemSet(estate->es_param_exec_vals, 0,
queryDesc->plantree->nParamExec * sizeof(ParamExecData));
}
/*
* Make our own private copy of the current query snapshot data.
@ -1788,12 +1792,17 @@ EvalPlanQual(EState *estate, Index rti, ItemPointer tid)
*/
epqstate->es_evTupleNull = (bool *) palloc(rtsize * sizeof(bool));
if (epq == NULL)
{
/* first PQ stack entry */
epqstate->es_evTuple = (HeapTuple *)
palloc0(rtsize * sizeof(HeapTuple));
palloc(rtsize * sizeof(HeapTuple));
memset(epqstate->es_evTuple, 0, rtsize * sizeof(HeapTuple));
}
else
{
/* later stack entries share the same storage */
epqstate->es_evTuple = epq->estate.es_evTuple;
}
}
else
{