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Revise sinval code to remove no-longer-used tuple TID from inval messages.

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This requires adjusting the API for syscache callback functions: they now
get a hash value, not a TID, to identify the target tuple.  Most of them
weren't paying any attention to that argument anyway, but plancache did
require a small amount of fixing.

Also, improve performance a trifle by avoiding sending duplicate inval
messages when a heap_update isn't changing the catcache lookup columns.
This commit is contained in:
Tom Lane
2011-08-16 19:27:46 -04:00
parent 632ae6829f
commit b5282aa893
19 changed files with 210 additions and 211 deletions
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4
src/backend/parser/parse_oper.c
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@ -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, int cacheid, ItemPointer tuplePtr);
static void InvalidateOprCacheCallBack(Datum arg, int cacheid, uint32 hashvalue);
/*
@ -1104,7 +1104,7 @@ make_oper_cache_entry(OprCacheKey *key, Oid opr_oid)
* Callback for pg_operator and pg_cast inval events
*/
static void
InvalidateOprCacheCallBack(Datum arg, int cacheid, ItemPointer tuplePtr)
InvalidateOprCacheCallBack(Datum arg, int cacheid, uint32 hashvalue)
{
HASH_SEQ_STATUS status;
OprCacheEntry *hentry;