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Commit7d0ab65

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committed
Fix for aggregate memory leaks from Erik Riedel.
1 parent9ede867 commit7d0ab65

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4 files changed

+76
-4
lines changed

4 files changed

+76
-4
lines changed

‎src/backend/executor/execMain.c‎

Lines changed: 20 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -26,7 +26,7 @@
2626
*
2727
*
2828
* IDENTIFICATION
29-
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.80 1999/03/19 18:56:36 momjian Exp $
29+
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.81 1999/03/20 01:13:21 momjian Exp $
3030
*
3131
*-------------------------------------------------------------------------
3232
*/
@@ -394,8 +394,26 @@ ExecutorEnd(QueryDesc *queryDesc, EState *estate)
394394

395395
EndPlan(queryDesc->plantree,estate);
396396

397+
/* XXX - clean up some more from ExecutorStart() - er1p */
398+
if (NULL==estate->es_snapshot) {
399+
/* nothing to free */
400+
}else {
401+
if (estate->es_snapshot->xcnt>0) {
402+
pfree(estate->es_snapshot->xip);
403+
}
404+
pfree(estate->es_snapshot);
405+
}
406+
407+
if (NULL==estate->es_param_exec_vals) {
408+
/* nothing to free */
409+
}else {
410+
pfree(estate->es_param_exec_vals);
411+
estate->es_param_exec_vals=NULL;
412+
}
413+
397414
/* restore saved refcounts. */
398415
BufferRefCountRestore(estate->es_refcount);
416+
399417
}
400418

401419
void
@@ -580,7 +598,7 @@ InitPlan(CmdType operation, Query *parseTree, Plan *plan, EState *estate)
580598
/*
581599
*initialize result relation stuff
582600
*/
583-
601+
584602
if (resultRelation!=0&&operation!=CMD_SELECT)
585603
{
586604
/*

‎src/backend/executor/execUtils.c‎

Lines changed: 49 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/backend/executor/execUtils.c,v 1.43 1999/02/13 23:15:20 momjian Exp $
10+
* $Header: /cvsroot/pgsql/src/backend/executor/execUtils.c,v 1.44 1999/03/20 01:13:22 momjian Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -272,6 +272,7 @@ ExecAssignResultTypeFromTL(Plan *node, CommonState *commonstate)
272272
#endif
273273
i++;
274274
}
275+
275276
if (len>0)
276277
{
277278
ExecAssignResultType(commonstate,
@@ -368,6 +369,53 @@ ExecFreeProjectionInfo(CommonState *commonstate)
368369
commonstate->cs_ProjInfo=NULL;
369370
}
370371

372+
/* ----------------
373+
*ExecFreeExprContext
374+
* ----------------
375+
*/
376+
void
377+
ExecFreeExprContext(CommonState*commonstate)
378+
{
379+
ExprContext*econtext;
380+
381+
/* ----------------
382+
*get expression context. if NULL then this node has
383+
*none so we just return.
384+
* ----------------
385+
*/
386+
econtext=commonstate->cs_ExprContext;
387+
if (econtext==NULL)
388+
return;
389+
390+
/* ----------------
391+
*clean up memory used.
392+
* ----------------
393+
*/
394+
pfree(econtext);
395+
commonstate->cs_ExprContext=NULL;
396+
}
397+
398+
/* ----------------
399+
*ExecFreeTypeInfo
400+
* ----------------
401+
*/
402+
void
403+
ExecFreeTypeInfo(CommonState*commonstate)
404+
{
405+
TupleDesctupDesc;
406+
407+
tupDesc=commonstate->cs_ResultTupleSlot->ttc_tupleDescriptor;
408+
if (tupDesc==NULL)
409+
return;
410+
411+
/* ----------------
412+
*clean up memory used.
413+
* ----------------
414+
*/
415+
FreeTupleDesc(tupDesc);
416+
commonstate->cs_ResultTupleSlot->ttc_tupleDescriptor=NULL;
417+
}
418+
371419
/* ----------------------------------------------------------------
372420
*the following scan type support functions are for
373421
*those nodes which are stubborn and return tuples in

‎src/backend/executor/nodeAgg.c‎

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -110,6 +110,7 @@ ExecAgg(Agg *node)
110110
isNull2= FALSE;
111111
boolqual_result;
112112

113+
DatumoldVal= (Datum)NULL;/* XXX - so that we can save and free on each iteration - er1p */
113114

114115
/* ---------------------
115116
*get state info from node
@@ -372,8 +373,10 @@ ExecAgg(Agg *node)
372373
*/
373374
args[0]=value1[aggno];
374375
args[1]=newVal;
376+
oldVal=value1[aggno];/* XXX - save so we can free later - er1p */
375377
value1[aggno]=(Datum)fmgr_c(&aggfns->xfn1,
376378
(FmgrValues*)args,&isNull1);
379+
pfree(oldVal);/* XXX - new, let's free the old datum - er1p */
377380
Assert(!isNull1);
378381
}
379382
}

‎src/backend/executor/nodeResult.c‎

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -27,7 +27,7 @@
2727
* SeqScan (emp.all)
2828
*
2929
* IDENTIFICATION
30-
* $Header: /cvsroot/pgsql/src/backend/executor/nodeResult.c,v 1.9 1999/02/13 23:15:26 momjian Exp $
30+
* $Header: /cvsroot/pgsql/src/backend/executor/nodeResult.c,v 1.10 1999/03/20 01:13:22 momjian Exp $
3131
*
3232
*-------------------------------------------------------------------------
3333
*/
@@ -263,6 +263,8 @@ ExecEndResult(Result *node)
263263
* is freed at end-transaction time. -cim 6/2/91
264264
* ----------------
265265
*/
266+
ExecFreeExprContext(&resstate->cstate);/* XXX - new for us - er1p */
267+
ExecFreeTypeInfo(&resstate->cstate);/* XXX - new for us - er1p */
266268
ExecFreeProjectionInfo(&resstate->cstate);
267269

268270
/* ----------------
@@ -276,6 +278,7 @@ ExecEndResult(Result *node)
276278
* ----------------
277279
*/
278280
ExecClearTuple(resstate->cstate.cs_ResultTupleSlot);
281+
pfree(resstate);node->resstate=NULL;/* XXX - new for us - er1p */
279282
}
280283

281284
void

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