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First stage of reclaiming memory in executor by resetting short-term

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memory contexts.  Currently, only leaks in expressions executed as
quals or projections are handled.  Clean up some old dead cruft in
executor while at it --- unused fields in state nodes, that sort of thing.
This commit is contained in:
Tom Lane
2000-07-12 02:37:39 +00:00
parent 46fb9c29e2
commit badce86a2c
53 changed files with 1536 additions and 1584 deletions
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31
src/include/executor/executor.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: executor.h,v 1.45 2000/06/18 22:44:28 tgl Exp $
* $Id: executor.h,v 1.46 2000/07/12 02:37:30 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -72,19 +72,16 @@ extern void ExecEndNode(Plan *node, Plan *parent);
/*
* prototypes from functions in execQual.c
*/
extern bool execConstByVal;
extern int execConstLen;
extern Datum ExecExtractResult(TupleTableSlot *slot, AttrNumber attnum,
bool *isNull);
extern Datum ExecEvalParam(Param *expression, ExprContext *econtext,
bool *isNull);
extern char *GetAttributeByNum(TupleTableSlot *slot, AttrNumber attrno,
bool *isNull);
extern char *GetAttributeByName(TupleTableSlot *slot, char *attname, bool *isNull);
extern Datum ExecEvalExpr(Node *expression, ExprContext *econtext, bool *isNull,
bool *isDone);
extern char *GetAttributeByName(TupleTableSlot *slot, char *attname,
bool *isNull);
extern Datum ExecEvalExpr(Node *expression, ExprContext *econtext,
bool *isNull, bool *isDone);
extern Datum ExecEvalExprSwitchContext(Node *expression, ExprContext *econtext,
bool *isNull, bool *isDone);
extern bool ExecQual(List *qual, ExprContext *econtext, bool resultForNull);
extern int ExecTargetListLength(List *targetlist);
extern TupleTableSlot *ExecProject(ProjectionInfo *projInfo, bool *isDone);
@@ -92,7 +89,9 @@ extern TupleTableSlot *ExecProject(ProjectionInfo *projInfo, bool *isDone);
/*
* prototypes from functions in execScan.c
*/
extern TupleTableSlot *ExecScan(Scan *node, TupleTableSlot *(*accessMtd) ());
typedef TupleTableSlot *(*ExecScanAccessMtd) (Scan *node);
extern TupleTableSlot *ExecScan(Scan *node, ExecScanAccessMtd accessMtd);
/*
* prototypes from functions in execTuples.c
@@ -121,8 +120,6 @@ extern void SetChangedParamList(Plan *node, List *newchg);
* prototypes from functions in execUtils.c
*/
extern void ResetTupleCount(void);
extern void ExecAssignNodeBaseInfo(EState *estate, CommonState *basenode,
Plan *parent);
extern void ExecAssignExprContext(EState *estate, CommonState *commonstate);
extern void ExecAssignResultType(CommonState *commonstate,
TupleDesc tupDesc);
@@ -133,7 +130,6 @@ extern TupleDesc ExecGetResultType(CommonState *commonstate);
extern void ExecAssignProjectionInfo(Plan *node, CommonState *commonstate);
extern void ExecFreeProjectionInfo(CommonState *commonstate);
extern void ExecFreeExprContext(CommonState *commonstate);
extern void ExecFreeTypeInfo(CommonState *commonstate);
extern TupleDesc ExecGetScanType(CommonScanState *csstate);
extern void ExecAssignScanType(CommonScanState *csstate,
TupleDesc tupDesc);
@@ -141,6 +137,13 @@ extern void ExecAssignScanTypeFromOuterPlan(Plan *node,
CommonScanState *csstate);
extern Form_pg_attribute ExecGetTypeInfo(Relation relDesc);
extern ExprContext *MakeExprContext(TupleTableSlot *slot,
MemoryContext queryContext);
extern void FreeExprContext(ExprContext *econtext);
#define ResetExprContext(econtext) \
MemoryContextReset((econtext)->ecxt_per_tuple_memory)
extern void ExecOpenIndices(RelationInfo *resultRelationInfo);
extern void ExecCloseIndices(RelationInfo *resultRelationInfo);
extern void ExecInsertIndexTuples(TupleTableSlot *slot, ItemPointer tupleid,