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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
View File

@@ -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,

7
src/backend/utils/adt/varbit.c
View File

@@ -9,7 +9,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/varbit.c,v 1.18 2001/05/22 16:37:16 petere Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/varbit.c,v 1.19 2001/10/06 23:21:44 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -19,6 +19,7 @@
#include "catalog/pg_type.h"
#include "utils/array.h"
#include "utils/fmgroids.h"
#include "utils/memutils.h"
#include "utils/varbit.h"
#define HEXDIG(z) ((z)<10 ? ((z)+'0') : ((z)-10+'A'))
@@ -238,7 +239,7 @@ _bit(PG_FUNCTION_ARGS)
static FmgrInfo bit_finfo;
if (bit_finfo.fn_oid == InvalidOid)
fmgr_info(F_BIT, &bit_finfo);
fmgr_info_cxt(F_BIT, &bit_finfo, TopMemoryContext);
MemSet(&locfcinfo, 0, sizeof(locfcinfo));
locfcinfo.flinfo = &bit_finfo;
@@ -452,7 +453,7 @@ _varbit(PG_FUNCTION_ARGS)
static FmgrInfo varbit_finfo;
if (varbit_finfo.fn_oid == InvalidOid)
fmgr_info(F_VARBIT, &varbit_finfo);
fmgr_info_cxt(F_VARBIT, &varbit_finfo, TopMemoryContext);
MemSet(&locfcinfo, 0, sizeof(locfcinfo));
locfcinfo.flinfo = &varbit_finfo;

6
src/backend/utils/adt/varchar.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/varchar.c,v 1.83 2001/10/03 05:29:24 thomas Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/varchar.c,v 1.84 2001/10/06 23:21:44 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -285,7 +285,7 @@ _bpchar(PG_FUNCTION_ARGS)
static FmgrInfo bpchar_finfo;
if (bpchar_finfo.fn_oid == InvalidOid)
fmgr_info(F_BPCHAR, &bpchar_finfo);
fmgr_info_cxt(F_BPCHAR, &bpchar_finfo, TopMemoryContext);
MemSet(&locfcinfo, 0, sizeof(locfcinfo));
locfcinfo.flinfo = &bpchar_finfo;
@@ -544,7 +544,7 @@ _varchar(PG_FUNCTION_ARGS)
static FmgrInfo varchar_finfo;
if (varchar_finfo.fn_oid == InvalidOid)
fmgr_info(F_VARCHAR, &varchar_finfo);
fmgr_info_cxt(F_VARCHAR, &varchar_finfo, TopMemoryContext);
MemSet(&locfcinfo, 0, sizeof(locfcinfo));
locfcinfo.flinfo = &varchar_finfo;