diff options
| -rw-r--r-- | src/backend/utils/cache/relcache.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/src/backend/utils/cache/relcache.c b/src/backend/utils/cache/relcache.c index f3ca1903db9..a14c10f76e8 100644 --- a/src/backend/utils/cache/relcache.c +++ b/src/backend/utils/cache/relcache.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.125 2001/01/06 21:53:18 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.126 2001/01/08 18:34:44 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1557,7 +1557,13 @@ RelationNameGetRelation(const char *relationName) /* -------------------------------- * RelationClose - close an open relation * - * Actually, we just decrement the refcount. + * Actually, we just decrement the refcount. + * + * NOTE: if compiled with -DRELCACHE_FORCE_RELEASE then relcache entries + * will be freed as soon as their refcount goes to zero. In combination + * with aset.c's CLOBBER_FREED_MEMORY option, this provides a good test + * to catch references to already-released relcache entries. It slows + * things down quite a bit, however. * -------------------------------- */ void @@ -1565,6 +1571,11 @@ RelationClose(Relation relation) { /* Note: no locking manipulations needed */ RelationDecrementReferenceCount(relation); + +#ifdef RELCACHE_FORCE_RELEASE + if (RelationHasReferenceCountZero(relation) && !relation->rd_myxactonly) + RelationClearRelation(relation, false); +#endif } #ifdef ENABLE_REINDEX_NAILED_RELATIONS @@ -1603,6 +1614,7 @@ RelationReloadClassinfo(Relation relation) return; } #endif /* ENABLE_REINDEX_NAILED_RELATIONS */ + /* -------------------------------- * RelationClearRelation * @@ -1611,9 +1623,6 @@ RelationReloadClassinfo(Relation relation) * usually used when we are notified of a change to an open relation * (one with refcount > 0). However, this routine just does whichever * it's told to do; callers must determine which they want. - * - * If we detect a change in the relation's TupleDesc, rules, or triggers - * while rebuilding, we complain unless refcount is 0. * -------------------------------- */ static void |