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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/parser/parse_oper.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/parse_oper.c,v 1.105 2008/08/28 23:09:47 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/parse_oper.c,v 1.106 2008/09/09 18:58:08 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -79,7 +79,7 @@ static bool make_oper_cache_key(OprCacheKey *key, List *opname,
Oid ltypeId, Oid rtypeId);
static Oid find_oper_cache_entry(OprCacheKey *key);
static void make_oper_cache_entry(OprCacheKey *key, Oid opr_oid);
static void InvalidateOprCacheCallBack(Datum arg, Oid relid);
static void InvalidateOprCacheCallBack(Datum arg, int cacheid, ItemPointer tuplePtr);
/*
@ -1130,7 +1130,7 @@ make_oper_cache_entry(OprCacheKey *key, Oid opr_oid)
* Callback for pg_operator and pg_cast inval events
*/
static void
InvalidateOprCacheCallBack(Datum arg, Oid relid)
InvalidateOprCacheCallBack(Datum arg, int cacheid, ItemPointer tuplePtr)
{
HASH_SEQ_STATUS status;
OprCacheEntry *hentry;