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/*------------------------------------------------------------------------- * * relcache.h * Relation descriptor cache definitions. * * * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/utils/relcache.h * *------------------------------------------------------------------------- */ #ifndef RELCACHE_H #define RELCACHE_H #include "access/tupdesc.h" #include "nodes/bitmapset.h" typedef struct RelationData *Relation; /* ---------------- * RelationPtr is used in the executor to support index scans * where we have to keep track of several index relations in an * array. -cim 9/10/89 * ---------------- */ typedef Relation *RelationPtr; /* * Routines to open (lookup) and close a relcache entry */ extern Relation RelationIdGetRelation(Oid relationId); extern void RelationClose(Relation relation); /* * Routines to compute/retrieve additional cached information */ extern List *RelationGetIndexList(Relation relation); extern Oid RelationGetOidIndex(Relation relation); extern List *RelationGetIndexExpressions(Relation relation); extern List *RelationGetIndexPredicate(Relation relation); extern Bitmapset *RelationGetIndexAttrBitmap(Relation relation); extern void RelationGetExclusionInfo(Relation indexRelation, Oid **operators, Oid **procs, uint16 **strategies); extern void RelationSetIndexList(Relation relation, List *indexIds, Oid oidIndex); extern void RelationInitIndexAccessInfo(Relation relation); /* * Routines for backend startup */ extern void RelationCacheInitialize(void); extern void RelationCacheInitializePhase2(void); extern void RelationCacheInitializePhase3(void); /* * Routine to create a relcache entry for an about-to-be-created relation */ extern Relation RelationBuildLocalRelation(const char *relname, Oid relnamespace, TupleDesc tupDesc, Oid relid, Oid relfilenode, Oid reltablespace, bool shared_relation, bool mapped_relation, char relpersistence); /* * Routine to manage assignment of new relfilenode to a relation */ extern void RelationSetNewRelfilenode(Relation relation, TransactionId freezeXid); /* * Routines for flushing/rebuilding relcache entries in various scenarios */ extern void RelationForgetRelation(Oid rid); extern void RelationCacheInvalidateEntry(Oid relationId); extern void RelationCacheInvalidate(void); extern void RelationCloseSmgrByOid(Oid relationId); extern void AtEOXact_RelationCache(bool isCommit); extern void AtEOSubXact_RelationCache(bool isCommit, SubTransactionId mySubid, SubTransactionId parentSubid); /* * Routines to help manage rebuilding of relcache init files */ extern bool RelationIdIsInInitFile(Oid relationId); extern void RelationCacheInitFilePreInvalidate(void); extern void RelationCacheInitFilePostInvalidate(void); extern void RelationCacheInitFileRemove(void); /* should be used only by relcache.c and catcache.c */ extern bool criticalRelcachesBuilt; /* should be used only by relcache.c and postinit.c */ extern bool criticalSharedRelcachesBuilt; #endif /* RELCACHE_H */