diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2001-06-19 19:42:16 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2001-06-19 19:42:16 +0000 |
| commit | bbbc00af8829ea442ea9b8a43bdf751f0568bc92 (patch) | |
| tree | ebe363134eeabf96e4086147b87d039886bd903b /src/include/utils/catcache.h | |
| parent | d9a069e2242b360351df39687a956bf278607b7a (diff) | |
Clean up some longstanding problems in shared-cache invalidation.
SI messages now include the relevant database OID, so that operations
in one database do not cause useless cache flushes in backends attached
to other databases. Declare SI messages properly using a union, to
eliminate the former assumption that Oid is the same size as int or Index.
Rewrite the nearly-unreadable code in inval.c, and document it better.
Arrange for catcache flushes at end of command/transaction to happen before
relcache flushes do --- this avoids loading a new tuple into the catcache
while setting up new relcache entry, only to have it be flushed again
immediately.
Diffstat (limited to 'src/include/utils/catcache.h')
| -rw-r--r-- | src/include/utils/catcache.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/include/utils/catcache.h b/src/include/utils/catcache.h index a2d3064a8b9..6b7a656e010 100644 --- a/src/include/utils/catcache.h +++ b/src/include/utils/catcache.h @@ -13,7 +13,7 @@ * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: catcache.h,v 1.33 2001/06/18 03:35:07 tgl Exp $ + * $Id: catcache.h,v 1.34 2001/06/19 19:42:16 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -36,6 +36,7 @@ typedef struct catcache char *cc_relname; /* name of relation the tuples come from */ char *cc_indname; /* name of index matching cache keys */ int cc_reloidattr; /* AttrNumber of relation OID, or 0 */ + bool cc_relisshared; /* is relation shared? */ TupleDesc cc_tupdesc; /* tuple descriptor (copied from reldesc) */ int cc_ntup; /* # of tuples currently in this cache */ int cc_size; /* # of hash buckets in this cache */ @@ -98,7 +99,7 @@ extern void CatalogCacheFlushRelation(Oid relId); extern void CatalogCacheIdInvalidate(int cacheId, Index hashIndex, ItemPointer pointer); extern void PrepareToInvalidateCacheTuple(Relation relation, - HeapTuple tuple, - void (*function) (int, Index, ItemPointer)); + HeapTuple tuple, + void (*function) (int, Index, ItemPointer, Oid)); #endif /* CATCACHE_H */ |