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New func RelationForgetRelation();

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*         RelationFlushRelation + if the relation is local then get rid of
 *         the relation descriptor from the newly created relation list.
This commit is contained in:
Vadim B. Mikheev 1997-06-04 08:56:51 +00:00
parent 4da2ed9f1f
commit ded4650642
1 changed files with 53 additions and 9 deletions
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62
src/backend/utils/cache/relcache.c vendored
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.8 1997/05/22 17:24:20 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.9 1997/06/04 08:56:51 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -252,6 +252,13 @@ static void build_tupdesc_ind(RelationBuildDescInfo buildinfo,
static Relation RelationBuildDesc(RelationBuildDescInfo buildinfo);
static void IndexedAccessMethodInitialize(Relation relation);
/*
* newlyCreatedRelns -
* relations created during this transaction. We need to keep track of
* these.
*/
static List *newlyCreatedRelns = NULL;
/* ----------------------------------------------------------------
* RelationIdGetRelation() and RelationNameGetRelation()
* support functions
@ -1243,6 +1250,51 @@ RelationFlushRelation(Relation *relationPtr,
}
}
/* --------------------------------
* RelationForgetRelation -
* RelationFlushRelation + if the relation is local then get rid of
* the relation descriptor from the newly created relation list.
* --------------------------------
*/
void
RelationForgetRelation (Oid rid)
{
Relation relation;
RelationIdCacheLookup (rid, relation);
Assert ( PointerIsValid (relation) );
if ( relation->rd_islocal )
{
MemoryContext oldcxt;
List *curr;
List *prev = NIL;
oldcxt = MemoryContextSwitchTo((MemoryContext)CacheCxt);
foreach (curr, newlyCreatedRelns)
{
Relation reln = lfirst(curr);
Assert ( reln != NULL && reln->rd_islocal );
if ( reln->rd_id == rid )
break;
prev = curr;
}
if ( curr == NIL )
elog (FATAL, "Local relation %.*s not found in list",
NAMEDATALEN, (RelationGetRelationName(relation))->data);
if ( prev == NIL )
newlyCreatedRelns = lnext (newlyCreatedRelns);
else
lnext (prev) = lnext (curr);
pfree (curr);
MemoryContextSwitchTo(oldcxt);
}
RelationFlushRelation (&relation, false);
}
/* --------------------------------
* RelationIdInvalidateRelationCacheByRelationId
* --------------------------------
@ -1342,14 +1394,6 @@ RelationCacheInvalidate(bool onlyFlushReferenceCountZero)
Assert(RelationIdCache->hctl->nkeys == 10);
}
}
/*
* newlyCreatedRelns -
* relations created during this transaction. We need to keep track of
* these
*/
static List *newlyCreatedRelns = NULL;
/* --------------------------------