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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2001-01-08 18:34:44 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2001-01-08 18:34:44 +0000 |
| commit | b95f81a54a0c7fd87052d77f5401192a2bb87d6d (patch) | |
| tree | 87bf9181a688769e606f3dfa24dfd42417def50c /src/backend/utils/cache/relcache.c | |
| parent | e2586c3c62cdad8b495c44891160279982147926 (diff) | |
| download | postgresql-b95f81a54a0c7fd87052d77f5401192a2bb87d6d.tar.gz postgresql-b95f81a54a0c7fd87052d77f5401192a2bb87d6d.zip | |
Add some debugging support code (ifdef'd out in normal use).
Diffstat (limited to 'src/backend/utils/cache/relcache.c')
| -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 |