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91 lines
2.4 KiB
91 lines
2.4 KiB
29 years ago
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/*-------------------------------------------------------------------------
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*
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* syscache.h--
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* System catalog cache definitions.
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*
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: syscache.h,v 1.1 1996/08/28 01:59:26 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef SYSCACHE_H
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#define SYSCACHE_H
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/*#define CACHEDEBUG*/ /* turns DEBUG elogs on */
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#include "postgres.h"
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#include "access/htup.h"
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#include "nodes/pg_list.h"
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/*
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* Declarations for util/syscache.c.
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*
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* SysCache identifiers.
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*
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* The order of these must match the order
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* they are entered into the structure cacheinfo[] in syscache.c
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* The best thing to do is to add yours at the END, because some
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* code assumes that certain caches are at certain places in this
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* array.
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*/
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#define AMOPOPID 0
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#define AMOPSTRATEGY 1
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#define ATTNAME 2
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#define ATTNUM 3
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#define INDEXRELID 4
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#define LANNAME 5
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#define OPRNAME 6
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#define OPROID 7
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#define PRONAME 8
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#define PROOID 9
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#define RELNAME 10
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#define RELOID 11
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#define TYPNAME 12
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#define TYPOID 13
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#define AMNAME 14
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#define CLANAME 15
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#define INDRELIDKEY 16
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#define INHRELID 17
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#define RULOID 18
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#define AGGNAME 19
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#define LISTENREL 20
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#define USENAME 21
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#define USESYSID 22
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#define GRONAME 23
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#define GROSYSID 24
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#define REWRITENAME 25
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#define PROSRC 26
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#define CLADEFTYPE 27
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/* ----------------
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* struct cachedesc: information needed for a call to InitSysCache()
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* ----------------
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*/
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struct cachedesc {
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char *name; /* this is Name * so that we can initialize it */
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int nkeys;
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int key[4];
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int size; /* sizeof(appropriate struct) */
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char *indname; /* index relation for this cache, if exists */
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HeapTuple (*iScanFunc)(); /* function to handle index scans */
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};
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extern void zerocaches(void);
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extern void InitCatalogCache(void);
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extern HeapTuple SearchSysCacheTuple(int cacheId, Datum key1, Datum key2,
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Datum key3, Datum key4);
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extern int32 SearchSysCacheStruct(int cacheId, char *returnStruct,
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Datum key1, Datum key2, Datum key3, Datum key4);
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extern void *SearchSysCacheGetAttribute(int cacheId,
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AttrNumber attributeNumber,
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Datum key1,
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Datum key2,
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Datum key3,
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Datum key4);
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extern void *TypeDefaultRetrieve(Oid typId);
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#endif /* SYSCACHE_H */
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