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Diffstat (limited to 'src/include/utils/syscache.h')
| -rw-r--r-- | src/include/utils/syscache.h | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/src/include/utils/syscache.h b/src/include/utils/syscache.h new file mode 100644 index 0000000..f27b73d --- /dev/null +++ b/src/include/utils/syscache.h @@ -0,0 +1,219 @@ +/*------------------------------------------------------------------------- + * + * syscache.h + * System catalog cache definitions. + * + * See also lsyscache.h, which provides convenience routines for + * common cache-lookup operations. + * + * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/utils/syscache.h + * + *------------------------------------------------------------------------- + */ +#ifndef SYSCACHE_H +#define SYSCACHE_H + +#include "access/attnum.h" +#include "access/htup.h" +/* we intentionally do not include utils/catcache.h here */ + +/* + * SysCache identifiers. + * + * The order of these identifiers must match the order + * of the entries in the array cacheinfo[] in syscache.c. + * Keep them in alphabetical order (renumbering only costs a + * backend rebuild). + */ + +enum SysCacheIdentifier +{ + AGGFNOID = 0, + AMNAME, + AMOID, + AMOPOPID, + AMOPSTRATEGY, + AMPROCNUM, + ATTNAME, + ATTNUM, + AUTHMEMMEMROLE, + AUTHMEMROLEMEM, + AUTHNAME, + AUTHOID, + CASTSOURCETARGET, + CLAAMNAMENSP, + CLAOID, + COLLNAMEENCNSP, + COLLOID, + CONDEFAULT, + CONNAMENSP, + CONSTROID, + CONVOID, + DATABASEOID, + DEFACLROLENSPOBJ, + ENUMOID, + ENUMTYPOIDNAME, + EVENTTRIGGERNAME, + EVENTTRIGGEROID, + FOREIGNDATAWRAPPERNAME, + FOREIGNDATAWRAPPEROID, + FOREIGNSERVERNAME, + FOREIGNSERVEROID, + FOREIGNTABLEREL, + INDEXRELID, + LANGNAME, + LANGOID, + NAMESPACENAME, + NAMESPACEOID, + OPERNAMENSP, + OPEROID, + OPFAMILYAMNAMENSP, + OPFAMILYOID, + PARTRELID, + PROCNAMEARGSNSP, + PROCOID, + PUBLICATIONNAME, + PUBLICATIONOID, + PUBLICATIONREL, + PUBLICATIONRELMAP, + RANGETYPE, + RELNAMENSP, + RELOID, + REPLORIGIDENT, + REPLORIGNAME, + RULERELNAME, + SEQRELID, + STATEXTDATASTXOID, + STATEXTNAMENSP, + STATEXTOID, + STATRELATTINH, + SUBSCRIPTIONNAME, + SUBSCRIPTIONOID, + SUBSCRIPTIONRELMAP, + TABLESPACEOID, + TRFOID, + TRFTYPELANG, + TSCONFIGMAP, + TSCONFIGNAMENSP, + TSCONFIGOID, + TSDICTNAMENSP, + TSDICTOID, + TSPARSERNAMENSP, + TSPARSEROID, + TSTEMPLATENAMENSP, + TSTEMPLATEOID, + TYPENAMENSP, + TYPEOID, + USERMAPPINGOID, + USERMAPPINGUSERSERVER + +#define SysCacheSize (USERMAPPINGUSERSERVER + 1) +}; + +extern void InitCatalogCache(void); +extern void InitCatalogCachePhase2(void); + +extern HeapTuple SearchSysCache(int cacheId, + Datum key1, Datum key2, Datum key3, Datum key4); + +/* + * The use of argument specific numbers is encouraged. They're faster, and + * insulates the caller from changes in the maximum number of keys. + */ +extern HeapTuple SearchSysCache1(int cacheId, + Datum key1); +extern HeapTuple SearchSysCache2(int cacheId, + Datum key1, Datum key2); +extern HeapTuple SearchSysCache3(int cacheId, + Datum key1, Datum key2, Datum key3); +extern HeapTuple SearchSysCache4(int cacheId, + Datum key1, Datum key2, Datum key3, Datum key4); + +extern void ReleaseSysCache(HeapTuple tuple); + +/* convenience routines */ +extern HeapTuple SearchSysCacheCopy(int cacheId, + Datum key1, Datum key2, Datum key3, Datum key4); +extern bool SearchSysCacheExists(int cacheId, + Datum key1, Datum key2, Datum key3, Datum key4); +extern Oid GetSysCacheOid(int cacheId, AttrNumber oidcol, + Datum key1, Datum key2, Datum key3, Datum key4); + +extern HeapTuple SearchSysCacheAttName(Oid relid, const char *attname); +extern HeapTuple SearchSysCacheCopyAttName(Oid relid, const char *attname); +extern bool SearchSysCacheExistsAttName(Oid relid, const char *attname); + +extern HeapTuple SearchSysCacheAttNum(Oid relid, int16 attnum); +extern HeapTuple SearchSysCacheCopyAttNum(Oid relid, int16 attnum); + +extern Datum SysCacheGetAttr(int cacheId, HeapTuple tup, + AttrNumber attributeNumber, bool *isNull); + +extern uint32 GetSysCacheHashValue(int cacheId, + Datum key1, Datum key2, Datum key3, Datum key4); + +/* list-search interface. Users of this must import catcache.h too */ +struct catclist; +extern struct catclist *SearchSysCacheList(int cacheId, int nkeys, + Datum key1, Datum key2, Datum key3); + +extern void SysCacheInvalidate(int cacheId, uint32 hashValue); + +extern bool RelationInvalidatesSnapshotsOnly(Oid relid); +extern bool RelationHasSysCache(Oid relid); +extern bool RelationSupportsSysCache(Oid relid); + +/* + * The use of the macros below rather than direct calls to the corresponding + * functions is encouraged, as it insulates the caller from changes in the + * maximum number of keys. + */ +#define SearchSysCacheCopy1(cacheId, key1) \ + SearchSysCacheCopy(cacheId, key1, 0, 0, 0) +#define SearchSysCacheCopy2(cacheId, key1, key2) \ + SearchSysCacheCopy(cacheId, key1, key2, 0, 0) +#define SearchSysCacheCopy3(cacheId, key1, key2, key3) \ + SearchSysCacheCopy(cacheId, key1, key2, key3, 0) +#define SearchSysCacheCopy4(cacheId, key1, key2, key3, key4) \ + SearchSysCacheCopy(cacheId, key1, key2, key3, key4) + +#define SearchSysCacheExists1(cacheId, key1) \ + SearchSysCacheExists(cacheId, key1, 0, 0, 0) +#define SearchSysCacheExists2(cacheId, key1, key2) \ + SearchSysCacheExists(cacheId, key1, key2, 0, 0) +#define SearchSysCacheExists3(cacheId, key1, key2, key3) \ + SearchSysCacheExists(cacheId, key1, key2, key3, 0) +#define SearchSysCacheExists4(cacheId, key1, key2, key3, key4) \ + SearchSysCacheExists(cacheId, key1, key2, key3, key4) + +#define GetSysCacheOid1(cacheId, oidcol, key1) \ + GetSysCacheOid(cacheId, oidcol, key1, 0, 0, 0) +#define GetSysCacheOid2(cacheId, oidcol, key1, key2) \ + GetSysCacheOid(cacheId, oidcol, key1, key2, 0, 0) +#define GetSysCacheOid3(cacheId, oidcol, key1, key2, key3) \ + GetSysCacheOid(cacheId, oidcol, key1, key2, key3, 0) +#define GetSysCacheOid4(cacheId, oidcol, key1, key2, key3, key4) \ + GetSysCacheOid(cacheId, oidcol, key1, key2, key3, key4) + +#define GetSysCacheHashValue1(cacheId, key1) \ + GetSysCacheHashValue(cacheId, key1, 0, 0, 0) +#define GetSysCacheHashValue2(cacheId, key1, key2) \ + GetSysCacheHashValue(cacheId, key1, key2, 0, 0) +#define GetSysCacheHashValue3(cacheId, key1, key2, key3) \ + GetSysCacheHashValue(cacheId, key1, key2, key3, 0) +#define GetSysCacheHashValue4(cacheId, key1, key2, key3, key4) \ + GetSysCacheHashValue(cacheId, key1, key2, key3, key4) + +#define SearchSysCacheList1(cacheId, key1) \ + SearchSysCacheList(cacheId, 1, key1, 0, 0) +#define SearchSysCacheList2(cacheId, key1, key2) \ + SearchSysCacheList(cacheId, 2, key1, key2, 0) +#define SearchSysCacheList3(cacheId, key1, key2, key3) \ + SearchSysCacheList(cacheId, 3, key1, key2, key3) + +#define ReleaseSysCacheList(x) ReleaseCatCacheList(x) + +#endif /* SYSCACHE_H */ |