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postgresql/src/include/access/genam.h

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Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
/*-------------------------------------------------------------------------
*
Change my-function-name-- to my_function_name, and optimizer renames.
1999-02-14 00:22:53 +01:00
* genam.h
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
* POSTGRES general access method definitions.
Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
*
*
Change Copyright from PostgreSQL, Inc to PostgreSQL Global Development Group.
2001-01-24 20:43:33 +01:00
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
Add: * Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files.
2000-01-26 06:58:53 +01:00
* Portions Copyright (c) 1994, Regents of the University of California
Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
*
Rearrange fmgr.c and relcache so that it's possible to keep FmgrInfo 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.
2001-10-07 01:21:45 +02:00
* $Id: genam.h,v 1.27 2001/10/06 23:21:44 tgl Exp $
Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
*
*-------------------------------------------------------------------------
*/
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
#ifndef GENAM_H
Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
#define GENAM_H
Change #include's to use <> and "" as appropriate.
1999-07-16 01:04:24 +02:00
#include "access/itup.h"
More cleanup
1999-07-16 19:07:40 +02:00
#include "access/relscan.h"
#include "access/sdir.h"
Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
Restructure index AM interface for index building and index tuple deletion, per previous discussion on pghackers. Most of the duplicate code in different AMs' ambuild routines has been moved out to a common routine in index.c; this means that all index types now do the right things about inserting recently-dead tuples, etc. (I also removed support for EXTEND INDEX in the ambuild routines, since that's about to go away anyway, and it cluttered the code a lot.) The retail indextuple deletion routines have been replaced by a "bulk delete" routine in which the indexscan is inside the access method. I haven't pushed this change as far as it should go yet, but it should allow considerable simplification of the internal bookkeeping for deletions. Also, add flag columns to pg_am to eliminate various hardcoded tests on AM OIDs, and remove unused pg_am columns. Fix rtree and gist index types to not attempt to store NULLs; before this, gist usually crashed, while rtree managed not to crash but computed wacko bounding boxes for NULL entries (which might have had something to do with the performance problems we've heard about occasionally). Add AtEOXact routines to hash, rtree, and gist, all of which have static state that needs to be reset after an error. We discovered this need long ago for btree, but missed the other guys. Oh, one more thing: concurrent VACUUM is now the default.
2001-07-16 00:48:19 +02:00
/* Struct for statistics returned by bulk-delete operation */
typedef struct IndexBulkDeleteResult
{
BlockNumber num_pages; /* pages remaining in index */
double tuples_removed; /* # removed by bulk-delete operation */
double num_index_tuples; /* # remaining */
} IndexBulkDeleteResult;
/* Typedef for callback function to determine if a tuple is bulk-deletable */
typedef bool (*IndexBulkDeleteCallback) (ItemPointer itemptr, void *state);
Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
/* ----------------
Restructure index AM interface for index building and index tuple deletion, per previous discussion on pghackers. Most of the duplicate code in different AMs' ambuild routines has been moved out to a common routine in index.c; this means that all index types now do the right things about inserting recently-dead tuples, etc. (I also removed support for EXTEND INDEX in the ambuild routines, since that's about to go away anyway, and it cluttered the code a lot.) The retail indextuple deletion routines have been replaced by a "bulk delete" routine in which the indexscan is inside the access method. I haven't pushed this change as far as it should go yet, but it should allow considerable simplification of the internal bookkeeping for deletions. Also, add flag columns to pg_am to eliminate various hardcoded tests on AM OIDs, and remove unused pg_am columns. Fix rtree and gist index types to not attempt to store NULLs; before this, gist usually crashed, while rtree managed not to crash but computed wacko bounding boxes for NULL entries (which might have had something to do with the performance problems we've heard about occasionally). Add AtEOXact routines to hash, rtree, and gist, all of which have static state that needs to be reset after an error. We discovered this need long ago for btree, but missed the other guys. Oh, one more thing: concurrent VACUUM is now the default.
2001-07-16 00:48:19 +02:00
* generalized index_ interface routines (in indexam.c)
Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
* ----------------
*/
extern Relation index_open(Oid relationId);
extern Relation index_openr(char *relationName);
Another PGINDENT run that changes variable indenting and case label indenting. Also static variable indenting.
1997-09-08 04:41:22 +02:00
extern void index_close(Relation relation);
OK, folks, here is the pgindent output.
1998-09-01 06:40:42 +02:00
extern InsertIndexResult index_insert(Relation relation,
Used modified version of indent that understands over 100 typedefs.
1997-09-08 23:56:23 +02:00
Datum *datum, char *nulls,
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
ItemPointer heap_t_ctid,
Relation heapRel);
OK, folks, here is the pgindent output.
1998-09-01 06:40:42 +02:00
extern IndexScanDesc index_beginscan(Relation relation, bool scanFromEnd,
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
uint16 numberOfKeys, ScanKey key);
Another PGINDENT run that changes variable indenting and case label indenting. Also static variable indenting.
1997-09-08 04:41:22 +02:00
extern void index_rescan(IndexScanDesc scan, bool scanFromEnd, ScanKey key);
extern void index_endscan(IndexScanDesc scan);
index_markpos()/index_restrpos() are in use now.
1998-02-26 13:14:54 +01:00
extern void index_markpos(IndexScanDesc scan);
extern void index_restrpos(IndexScanDesc scan);
OK, folks, here is the pgindent output.
1998-09-01 06:40:42 +02:00
extern RetrieveIndexResult index_getnext(IndexScanDesc scan,
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
ScanDirection direction);
Restructure index AM interface for index building and index tuple deletion, per previous discussion on pghackers. Most of the duplicate code in different AMs' ambuild routines has been moved out to a common routine in index.c; this means that all index types now do the right things about inserting recently-dead tuples, etc. (I also removed support for EXTEND INDEX in the ambuild routines, since that's about to go away anyway, and it cluttered the code a lot.) The retail indextuple deletion routines have been replaced by a "bulk delete" routine in which the indexscan is inside the access method. I haven't pushed this change as far as it should go yet, but it should allow considerable simplification of the internal bookkeeping for deletions. Also, add flag columns to pg_am to eliminate various hardcoded tests on AM OIDs, and remove unused pg_am columns. Fix rtree and gist index types to not attempt to store NULLs; before this, gist usually crashed, while rtree managed not to crash but computed wacko bounding boxes for NULL entries (which might have had something to do with the performance problems we've heard about occasionally). Add AtEOXact routines to hash, rtree, and gist, all of which have static state that needs to be reset after an error. We discovered this need long ago for btree, but missed the other guys. Oh, one more thing: concurrent VACUUM is now the default.
2001-07-16 00:48:19 +02:00
extern IndexBulkDeleteResult *index_bulk_delete(Relation relation,
IndexBulkDeleteCallback callback,
void *callback_state);
Revise handling of index-type-specific indexscan cost estimation, per pghackers discussion of 5-Jan-2000. The amopselect and amopnpages estimators are gone, and in their place is a per-AM amcostestimate procedure (linked to from pg_am, not pg_amop).
2000-01-23 00:50:30 +01:00
extern RegProcedure index_cost_estimator(Relation relation);
OK, folks, here is the pgindent output.
1998-09-01 06:40:42 +02:00
extern RegProcedure index_getprocid(Relation irel, AttrNumber attnum,
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
uint16 procnum);
Rearrange fmgr.c and relcache so that it's possible to keep FmgrInfo 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.
2001-10-07 01:21:45 +02:00
extern struct FmgrInfo *index_getprocinfo(Relation irel, AttrNumber attnum,
uint16 procnum);
Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
/* in genam.c */
OK, folks, here is the pgindent output.
1998-09-01 06:40:42 +02:00
extern IndexScanDesc RelationGetIndexScan(Relation relation, bool scanFromEnd,
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
uint16 numberOfKeys, ScanKey key);
Repair bugs discussed in pghackers thread of 15 May 1999: creation of a relcache entry no longer leaks a small amount of memory. index_endscan now releases all the memory acquired by index_beginscan, so callers of it should NOT pfree the scan descriptor anymore.
1999-12-30 06:05:13 +01:00
extern void IndexScanEnd(IndexScanDesc scan);
Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
OK, folks, here is the pgindent output.
1998-09-01 06:40:42 +02:00
#endif /* GENAM_H */