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Wrap calls to SearchSysCache and related functions using macros.

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The purpose of this change is to eliminate the need for every caller
of SearchSysCache, SearchSysCacheCopy, SearchSysCacheExists,
GetSysCacheOid, and SearchSysCacheList to know the maximum number
of allowable keys for a syscache entry (currently 4).  This will
make it far easier to increase the maximum number of keys in a
future release should we choose to do so, and it makes the code
shorter, too.

Design and review by Tom Lane.
This commit is contained in:
Robert Haas
2010-02-14 18:42:19 +00:00
parent 1012492bc0
commit e26c539e9f
97 changed files with 1125 additions and 2061 deletions
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10
src/backend/catalog/pg_inherits.c
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@@ -13,7 +13,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/catalog/pg_inherits.c,v 1.6 2010/02/01 19:28:56 rhaas Exp $
* $PostgreSQL: pgsql/src/backend/catalog/pg_inherits.c,v 1.7 2010/02/14 18:42:13 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -124,9 +124,7 @@ find_inheritance_children(Oid parentrelId, LOCKMODE lockmode)
* really exists or not. If not, assume it was dropped while we
* waited to acquire lock, and ignore it.
*/
if (!SearchSysCacheExists(RELOID,
ObjectIdGetDatum(inhrelid),
0, 0, 0))
if (!SearchSysCacheExists1(RELOID, ObjectIdGetDatum(inhrelid)))
{
/* Release useless lock */
UnlockRelationOid(inhrelid, lockmode);
@@ -245,9 +243,7 @@ has_subclass(Oid relationId)
HeapTuple tuple;
bool result;
tuple = SearchSysCache(RELOID,
ObjectIdGetDatum(relationId),
0, 0, 0);
tuple = SearchSysCache1(RELOID, ObjectIdGetDatum(relationId));
if (!HeapTupleIsValid(tuple))
elog(ERROR, "cache lookup failed for relation %u", relationId);