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  • Committer: alvherre
  • Date: 2005-12-16 21:24:52 UTC
  • Revision ID: svn-v4:db760fc0-0f08-0410-9d63-cc6633f64896:trunk:1
Initial import of the REL8_0_3 sources from the Pgsql CVS repository.

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src/include/utils/relcache.h
 
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/*-------------------------------------------------------------------------
 
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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) 1996-2005, 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 1.48 2005-01-10 20:02:24 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);
 
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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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/*
 
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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 */