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Phase 1 of read-only-plans project: cause executor state nodes to point

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to plan nodes, not vice-versa.  All executor state nodes now inherit from
struct PlanState.  Copying of plan trees has been simplified by not
storing a list of SubPlans in Plan nodes (eliminating duplicate links).
The executor still needs such a list, but it can build it during
ExecutorStart since it has to scan the plan tree anyway.
No initdb forced since no stored-on-disk structures changed, but you
will need a full recompile because of node-numbering changes.
This commit is contained in:
Tom Lane
2002-12-05 15:50:39 +00:00
parent 0f3b83edfa
commit 1fd0c59e25
71 changed files with 3032 additions and 3758 deletions
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14
src/backend/nodes/outfuncs.c
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@ -8,13 +8,13 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.185 2002/11/30 05:21:02 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.186 2002/12/05 15:50:35 tgl Exp $
*
* NOTES
* Every node type that can appear in stored rules' parsetrees *must*
* have an output function defined here (as well as an input function
* in readfuncs.c). For use in debugging, we also provide output
* functions for nodes that appear in raw parsetrees and plan trees.
* functions for nodes that appear in raw parsetrees, path, and plan trees.
* These nodes however need not have input functions.
*
*-------------------------------------------------------------------------
@ -24,10 +24,8 @@
#include <ctype.h>
#include "lib/stringinfo.h"
#include "nodes/nodes.h"
#include "nodes/parsenodes.h"
#include "nodes/plannodes.h"
#include "nodes/primnodes.h"
#include "nodes/relation.h"
#include "parser/parse.h"
#include "utils/datum.h"
@ -385,11 +383,9 @@ _outPlanInfo(StringInfo str, Plan *node)
WRITE_NODE_FIELD(qual);
WRITE_NODE_FIELD(lefttree);
WRITE_NODE_FIELD(righttree);
WRITE_NODE_FIELD(initPlan);
WRITE_INTLIST_FIELD(extParam);
WRITE_INTLIST_FIELD(locParam);
/* chgParam is execution state too */
WRITE_NODE_FIELD(initPlan);
/* we don't write subPlan; reader must reconstruct list */
WRITE_INT_FIELD(nParamExec);
}
@ -482,7 +478,6 @@ _outTidScan(StringInfo str, TidScan *node)
_outScanInfo(str, (Scan *) node);
WRITE_BOOL_FIELD(needRescan);
WRITE_NODE_FIELD(tideval);
}
@ -930,6 +925,8 @@ _outRangeTblEntry(StringInfo str, RangeTblEntry *node)
/*
* print the basic stuff of all nodes that inherit from Path
*
* Note we do NOT print the parent, else we'd be in infinite recursion
*/
static void
_outPathInfo(StringInfo str, Path *node)
@ -986,7 +983,6 @@ _outTidPath(StringInfo str, TidPath *node)
_outPathInfo(str, (Path *) node);
WRITE_NODE_FIELD(tideval);
WRITE_INTLIST_FIELD(unjoined_relids);
}
static void