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Improve the plan cache invalidation mechanism to make it invalidate plans

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when user-defined functions used in a plan are modified.  Also invalidate
plans when schemas, operators, or operator classes are modified; but for these
cases we just invalidate everything rather than tracking exact dependencies,
since these types of objects seldom change in a production database.

Tom Lane; loosely based on a patch by Martin Pihlak.
This commit is contained in:
Tom Lane
2008-09-09 18:58:09 +00:00
parent c06629c72e
commit ee33b95d9c
18 changed files with 522 additions and 275 deletions
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6
src/backend/utils/misc/superuser.c
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@ -14,7 +14,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/misc/superuser.c,v 1.37 2008/01/01 19:45:54 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/misc/superuser.c,v 1.38 2008/09/09 18:58:08 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -36,7 +36,7 @@ static Oid last_roleid = InvalidOid; /* InvalidOid == cache not valid */
static bool last_roleid_is_super = false;
static bool roleid_callback_registered = false;
static void RoleidCallback(Datum arg, Oid relid);
static void RoleidCallback(Datum arg, int cacheid, ItemPointer tuplePtr);
/*
@ -102,7 +102,7 @@ superuser_arg(Oid roleid)
* Syscache inval callback function
*/
static void
RoleidCallback(Datum arg, Oid relid)
RoleidCallback(Datum arg, int cacheid, ItemPointer tuplePtr)
{
/* Invalidate our local cache in case role's superuserness changed */
last_roleid = InvalidOid;