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fe548629c5
keep track of portal-related resources separately from transaction-related resources. This allows cursors to work in a somewhat sane fashion with nested transactions. For now, cursor behavior is non-subtransactional, that is a cursor's state does not roll back if you abort a subtransaction that fetched from the cursor. We might want to change that later.
80 lines
2.3 KiB
C
80 lines
2.3 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) 1996-2003, 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 1.42 2004/07/17 03:31:47 tgl 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 "utils/rel.h"
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/*
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* relation lookup routines
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*/
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extern Relation RelationIdGetRelation(Oid relationId);
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extern Relation RelationSysNameGetRelation(const char *relationName);
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/* finds an existing cache entry, but won't make a new one */
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extern Relation RelationIdCacheGetRelation(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 List *RelationGetIndexExpressions(Relation relation);
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extern List *RelationGetIndexPredicate(Relation relation);
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extern void RelationSetIndexList(Relation relation, List *indexIds);
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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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extern void RelationCacheInitializePhase3(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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bool nailit);
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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, RelFileNode *rnode);
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extern void RelationCacheInvalidate(void);
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extern void AtEOXact_RelationCache(bool isCommit);
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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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/* 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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