database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-12 21:01:52 +03:00
Code Activity

Change SearchSysCache coding conventions so that a reference count is

Browse Source 
maintained for each cache entry.  A cache entry will not be freed until
the matching ReleaseSysCache call has been executed.  This eliminates
worries about cache entries getting dropped while still in use.  See
my posting to pg-hackers of even date for more info.
This commit is contained in:
Tom Lane
2000-11-16 22:30:52 +00:00
parent cff23842a4
commit a933ee38bb
95 changed files with 2672 additions and 2314 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
src/backend/rewrite/rewriteRemove.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/rewrite/rewriteRemove.c,v 1.40 2000/09/29 18:21:24 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/rewrite/rewriteRemove.c,v 1.41 2000/11/16 22:30:29 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -35,21 +35,26 @@ RewriteGetRuleEventRel(char *rulename)
{
HeapTuple htup;
Oid eventrel;
char *result;
htup = SearchSysCacheTuple(RULENAME,
PointerGetDatum(rulename),
0, 0, 0);
htup = SearchSysCache(RULENAME,
PointerGetDatum(rulename),
0, 0, 0);
if (!HeapTupleIsValid(htup))
elog(ERROR, "Rule or view \"%s\" not found",
((strncmp(rulename, "_RET", 4) == 0) ? (rulename + 4) : rulename));
eventrel = ((Form_pg_rewrite) GETSTRUCT(htup))->ev_class;
htup = SearchSysCacheTuple(RELOID,
PointerGetDatum(eventrel),
0, 0, 0);
ReleaseSysCache(htup);
htup = SearchSysCache(RELOID,
PointerGetDatum(eventrel),
0, 0, 0);
if (!HeapTupleIsValid(htup))
elog(ERROR, "Relation %u not found", eventrel);
return NameStr(((Form_pg_class) GETSTRUCT(htup))->relname);
result = pstrdup(NameStr(((Form_pg_class) GETSTRUCT(htup))->relname));
ReleaseSysCache(htup);
return result;
}
/*
@ -75,9 +80,9 @@ RemoveRewriteRule(char *ruleName)
/*
* Find the tuple for the target rule.
*/
tuple = SearchSysCacheTupleCopy(RULENAME,
PointerGetDatum(ruleName),
0, 0, 0);
tuple = SearchSysCacheCopy(RULENAME,
PointerGetDatum(ruleName),
0, 0, 0);
/*
* complain if no rule with such name existed