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a3540b0f65
corresponding struct definitions. This allows other headers to avoid including certain highly-loaded headers such as rel.h and relscan.h, instead using just relcache.h, heapam.h or genam.h, which are more lightweight and thus cause less unnecessary dependencies.
94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
/*-------------------------------------------------------------------------
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*
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* relcache.h
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* Relation descriptor cache definitions.
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*
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*
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* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/utils/relcache.h,v 1.62 2008/06/19 00:46:06 alvherre Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef RELCACHE_H
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#define RELCACHE_H
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#include "access/tupdesc.h"
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#include "nodes/bitmapset.h"
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#include "nodes/pg_list.h"
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typedef struct RelationData *Relation;
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/* ----------------
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* RelationPtr is used in the executor to support index scans
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* where we have to keep track of several index relations in an
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* array. -cim 9/10/89
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* ----------------
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*/
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typedef Relation *RelationPtr;
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/*
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* Routines to open (lookup) and close a relcache entry
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*/
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extern Relation RelationIdGetRelation(Oid relationId);
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extern void RelationClose(Relation relation);
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/*
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* Routines to compute/retrieve additional cached information
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*/
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extern List *RelationGetIndexList(Relation relation);
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extern Oid RelationGetOidIndex(Relation relation);
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extern List *RelationGetIndexExpressions(Relation relation);
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extern List *RelationGetIndexPredicate(Relation relation);
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extern Bitmapset *RelationGetIndexAttrBitmap(Relation relation);
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extern void RelationSetIndexList(Relation relation,
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List *indexIds, Oid oidIndex);
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extern void RelationInitIndexAccessInfo(Relation relation);
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/*
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* Routines for backend startup
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*/
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extern void RelationCacheInitialize(void);
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extern void RelationCacheInitializePhase2(void);
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/*
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* Routine to create a relcache entry for an about-to-be-created relation
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*/
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extern Relation RelationBuildLocalRelation(const char *relname,
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Oid relnamespace,
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TupleDesc tupDesc,
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Oid relid,
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Oid reltablespace,
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bool shared_relation);
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/*
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* Routines for flushing/rebuilding relcache entries in various scenarios
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*/
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extern void RelationForgetRelation(Oid rid);
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extern void RelationCacheInvalidateEntry(Oid relationId);
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extern void RelationCacheInvalidate(void);
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extern void AtEOXact_RelationCache(bool isCommit);
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extern void AtEOSubXact_RelationCache(bool isCommit, SubTransactionId mySubid,
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SubTransactionId parentSubid);
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extern void RelationCacheMarkNewRelfilenode(Relation rel);
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/*
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* Routines to help manage rebuilding of relcache init file
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*/
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extern bool RelationIdIsInInitFile(Oid relationId);
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extern void RelationCacheInitFileInvalidate(bool beforeSend);
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extern void RelationCacheInitFileRemove(const char *dbPath);
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/* should be used only by relcache.c and catcache.c */
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extern bool criticalRelcachesBuilt;
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#endif /* RELCACHE_H */
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