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Rearrange fmgr.c and relcache so that it's possible to keep FmgrInfo

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lookup info in the relcache for index access method support functions.
This makes a huge difference for dynamically loaded support functions,
and should save a few cycles even for built-in ones.  Also tweak dfmgr.c
so that load_external_function is called only once, not twice, when
doing fmgr_info for a dynamically loaded function.  All per performance
gripe from Teodor Sigaev, 5-Oct-01.
This commit is contained in:
Tom Lane
2001-10-06 23:21:45 +00:00
parent a965750abf
commit 85801a4dbd
31 changed files with 424 additions and 390 deletions
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7
src/backend/utils/adt/ri_triggers.c
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@ -18,7 +18,7 @@
* Portions Copyright (c) 2000-2001, PostgreSQL Global Development Group
* Copyright 1999 Jan Wieck
*
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ri_triggers.c,v 1.27 2001/10/05 17:28:12 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ri_triggers.c,v 1.28 2001/10/06 23:21:44 tgl Exp $
*
* ----------
*/
@ -3243,7 +3243,6 @@ ri_AttributesEqual(Oid typeid, Datum oldvalue, Datum newvalue)
{
HeapTuple opr_tup;
Oid opr_proc;
MemoryContext oldcontext;
FmgrInfo finfo;
opr_tup = SearchSysCache(OPERNAME,
@ -3265,9 +3264,7 @@ ri_AttributesEqual(Oid typeid, Datum oldvalue, Datum newvalue)
* table entry, we must make sure any subsidiary structures of the
* fmgr record are kept in TopMemoryContext.
*/
oldcontext = MemoryContextSwitchTo(TopMemoryContext);
fmgr_info(opr_proc, &finfo);
MemoryContextSwitchTo(oldcontext);
fmgr_info_cxt(opr_proc, &finfo, TopMemoryContext);
entry = (RI_OpreqHashEntry *) hash_search(ri_opreq_cache,
(void *) &typeid,