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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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25
src/include/utils/rel.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: rel.h,v 1.51 2001/06/27 23:31:40 tgl Exp $
* $Id: rel.h,v 1.52 2001/10/06 23:21:44 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -23,8 +23,6 @@
#include "storage/fd.h"
#include "storage/relfilenode.h"
/* added to prevent circular dependency. bjm 1999/11/15 */
extern char *get_temp_rel_by_physicalname(const char *relname);
/*
* LockRelId and LockInfo really belong to lmgr.h, but it's more convenient
@@ -115,7 +113,7 @@ typedef struct RelationData
bool rd_isnailed; /* rel is nailed in cache */
bool rd_indexfound; /* true if rd_indexlist is valid */
bool rd_uniqueindex; /* true if rel is a UNIQUE index */
Form_pg_am rd_am; /* AM tuple */
Form_pg_am rd_am; /* AM tuple (if an index) */
Form_pg_class rd_rel; /* RELATION tuple */
Oid rd_id; /* relation's object id */
List *rd_indexlist; /* list of OIDs of indexes on relation */
@@ -123,10 +121,16 @@ typedef struct RelationData
TupleDesc rd_att; /* tuple descriptor */
RuleLock *rd_rules; /* rewrite rules */
MemoryContext rd_rulescxt; /* private memory cxt for rd_rules, if any */
IndexStrategy rd_istrat; /* info needed if rel is an index */
RegProcedure *rd_support;
TriggerDesc *trigdesc; /* Trigger info, or NULL if rel has none */
/* index access support info (used only for an index relation) */
MemoryContext rd_indexcxt; /* private memory cxt for this stuff */
IndexStrategy rd_istrat; /* operator strategy map */
RegProcedure *rd_support; /* OIDs of support procedures */
struct FmgrInfo *rd_supportinfo; /* lookup info for support procedures */
/* "struct FmgrInfo" avoids need to include fmgr.h here */
/* statistics collection area */
PgStat_Info pgstat_info;
} RelationData;
@@ -228,13 +232,6 @@ typedef Relation *RelationPtr;
*/
#define RelationGetIndexStrategy(relation) ((relation)->rd_istrat)
/*
* Routines in utils/cache/rel.c
*/
extern void RelationSetIndexSupport(Relation relation,
IndexStrategy strategy,
RegProcedure *support);
/*
* Handle temp relations
*/
@@ -279,5 +276,7 @@ extern void RelationSetIndexSupport(Relation relation,
RelationGetPhysicalRelationName(relation) \
)
/* added to prevent circular dependency. bjm 1999/11/15 */
extern char *get_temp_rel_by_physicalname(const char *relname);
#endif /* REL_H */