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/*-------------------------------------------------------------------------
*
* relcache.h
* Relation descriptor cache definitions.
*
*
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: relcache.h,v 1.23 2000/11/21 21:16:06 petere Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef RELCACHE_H
#define RELCACHE_H
#include "utils/rel.h"
/*
* relation lookup routines
*/
extern Relation RelationIdGetRelation(Oid relationId);
extern Relation RelationNameGetRelation(const char *relationName);
extern Relation RelationNodeCacheGetRelation(RelFileNode rnode);
/* finds an existing cache entry, but won't make a new one */
extern Relation RelationIdCacheGetRelation(Oid relationId);
extern void RelationClose(Relation relation);
extern void RelationForgetRelation(Oid rid);
/*
* Routines to compute/retrieve additional cached information
*/
extern List *RelationGetIndexList(Relation relation);
/*
* Routines for backend startup
*/
extern void RelationCacheInitialize(void);
extern void RelationCacheInitializePhase2(void);
/*
* Routines for flushing/rebuilding relcache entries in various scenarios
*/
extern void RelationIdInvalidateRelationCacheByRelationId(Oid relationId);
extern void RelationCacheInvalidate(void);
extern void RelationRegisterRelation(Relation relation);
extern void RelationPurgeLocalRelation(bool xactComitted);
extern void RelationCacheAbort(void);
extern void CreateDummyCaches(void);
extern void DestroyDummyCaches(void);
/*
* both vacuum.c and relcache.c need to know the name of the relcache init file
*/
#define RELCACHE_INIT_FILENAME "pg_internal.init"
#endif /* RELCACHE_H */
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