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Make further use of new bitmapset code: executor's chgParam, extParam,

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locParam lists can be converted to bitmapsets to speed updating.  Also,
replace 'locParam' with 'allParam', which contains all the paramIDs
relevant to the node (i.e., the union of extParam and locParam); this
saves a step during SetChangedParamList() without costing anything
elsewhere.
This commit is contained in:
Tom Lane
2003-02-09 00:30:41 +00:00
parent c15a4c2aef
commit 145014f811
17 changed files with 267 additions and 193 deletions
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77
src/backend/executor/nodeSubplan.c
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/nodeSubplan.c,v 1.43 2003/01/12 04:03:34 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/nodeSubplan.c,v 1.44 2003/02/09 00:30:39 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -80,7 +80,7 @@ ExecHashSubPlan(SubPlanState *node,
* If first time through or we need to rescan the subplan, build
* the hash table.
*/
if (node->hashtable == NULL || planstate->chgParam != NIL)
if (node->hashtable == NULL || planstate->chgParam != NULL)
buildSubPlanHash(node);
/*
@ -218,22 +218,18 @@ ExecScanSubPlan(SubPlanState *node,
* Set Params of this plan from parent plan correlation Vars
*/
pvar = node->args;
if (subplan->parParam != NIL)
foreach(lst, subplan->parParam)
{
foreach(lst, subplan->parParam)
{
ParamExecData *prm;
int paramid = lfirsti(lst);
ParamExecData *prm = &(econtext->ecxt_param_exec_vals[paramid]);
prm = &(econtext->ecxt_param_exec_vals[lfirsti(lst)]);
Assert(pvar != NIL);
prm->value = ExecEvalExprSwitchContext((ExprState *) lfirst(pvar),
econtext,
&(prm->isnull),
NULL);
pvar = lnext(pvar);
}
planstate->chgParam = nconc(planstate->chgParam,
listCopy(subplan->parParam));
Assert(pvar != NIL);
prm->value = ExecEvalExprSwitchContext((ExprState *) lfirst(pvar),
econtext,
&(prm->isnull),
NULL);
pvar = lnext(pvar);
planstate->chgParam = bms_add_member(planstate->chgParam, paramid);
}
Assert(pvar == NIL);
@ -686,7 +682,12 @@ ExecInitSubPlan(SubPlanState *node, EState *estate)
/*
* If this plan is un-correlated or undirect correlated one and want
* to set params for parent plan then prepare parameters.
* to set params for parent plan then mark parameters as needing
* evaluation.
*
* Note that in the case of un-correlated subqueries we don't care
* about setting parent->chgParam here: indices take care about
* it, for others - it doesn't matter...
*/
if (subplan->setParam != NIL)
{
@ -694,16 +695,11 @@ ExecInitSubPlan(SubPlanState *node, EState *estate)
foreach(lst, subplan->setParam)
{
ParamExecData *prm = &(estate->es_param_exec_vals[lfirsti(lst)]);
int paramid = lfirsti(lst);
ParamExecData *prm = &(estate->es_param_exec_vals[paramid]);
prm->execPlan = node;
}
/*
* Note that in the case of un-correlated subqueries we don't care
* about setting parent->chgParam here: indices take care about
* it, for others - it doesn't matter...
*/
}
/*
@ -884,7 +880,9 @@ ExecSetParamPlan(SubPlanState *node, ExprContext *econtext)
if (subLinkType == EXISTS_SUBLINK)
{
ParamExecData *prm = &(econtext->ecxt_param_exec_vals[lfirsti(subplan->setParam)]);
/* There can be only one param... */
int paramid = lfirsti(subplan->setParam);
ParamExecData *prm = &(econtext->ecxt_param_exec_vals[paramid]);
prm->execPlan = NULL;
prm->value = BoolGetDatum(true);
@ -914,9 +912,13 @@ ExecSetParamPlan(SubPlanState *node, ExprContext *econtext)
node->curTuple = tup;
MemoryContextSwitchTo(node->sub_estate->es_query_cxt);
/*
* Now set all the setParam params from the columns of the tuple
*/
foreach(lst, subplan->setParam)
{
ParamExecData *prm = &(econtext->ecxt_param_exec_vals[lfirsti(lst)]);
int paramid = lfirsti(lst);
ParamExecData *prm = &(econtext->ecxt_param_exec_vals[paramid]);
prm->execPlan = NULL;
prm->value = heap_getattr(tup, i, tdesc, &(prm->isnull));
@ -928,7 +930,9 @@ ExecSetParamPlan(SubPlanState *node, ExprContext *econtext)
{
if (subLinkType == EXISTS_SUBLINK)
{
ParamExecData *prm = &(econtext->ecxt_param_exec_vals[lfirsti(subplan->setParam)]);
/* There can be only one param... */
int paramid = lfirsti(subplan->setParam);
ParamExecData *prm = &(econtext->ecxt_param_exec_vals[paramid]);
prm->execPlan = NULL;
prm->value = BoolGetDatum(false);
@ -938,7 +942,8 @@ ExecSetParamPlan(SubPlanState *node, ExprContext *econtext)
{
foreach(lst, subplan->setParam)
{
ParamExecData *prm = &(econtext->ecxt_param_exec_vals[lfirsti(lst)]);
int paramid = lfirsti(lst);
ParamExecData *prm = &(econtext->ecxt_param_exec_vals[paramid]);
prm->execPlan = NULL;
prm->value = (Datum) 0;
@ -979,12 +984,12 @@ ExecReScanSetParamPlan(SubPlanState *node, PlanState *parent)
EState *estate = parent->state;
List *lst;
if (subplan->parParam != NULL)
if (subplan->parParam != NIL)
elog(ERROR, "ExecReScanSetParamPlan: direct correlated subquery unsupported, yet");
if (subplan->setParam == NULL)
elog(ERROR, "ExecReScanSetParamPlan: setParam list is NULL");
if (planstate->plan->extParam == NULL)
elog(ERROR, "ExecReScanSetParamPlan: extParam list of plan is NULL");
if (subplan->setParam == NIL)
elog(ERROR, "ExecReScanSetParamPlan: setParam list is empty");
if (bms_is_empty(planstate->plan->extParam))
elog(ERROR, "ExecReScanSetParamPlan: extParam set of plan is empty");
/*
* Don't actually re-scan: ExecSetParamPlan does it if needed.
@ -995,10 +1000,10 @@ ExecReScanSetParamPlan(SubPlanState *node, PlanState *parent)
*/
foreach(lst, subplan->setParam)
{
ParamExecData *prm = &(estate->es_param_exec_vals[lfirsti(lst)]);
int paramid = lfirsti(lst);
ParamExecData *prm = &(estate->es_param_exec_vals[paramid]);
prm->execPlan = node;
parent->chgParam = bms_add_member(parent->chgParam, paramid);
}
parent->chgParam = nconc(parent->chgParam, listCopy(subplan->setParam));
}