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postgresql/src/include/commands/vacuum.h

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Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
/*-------------------------------------------------------------------------
*
Change my-function-name-- to my_function_name, and optimizer renames.
1999-02-14 00:22:53 +01:00
* vacuum.h
Rewrite of planner statistics-gathering code. ANALYZE is now available as a separate statement (though it can still be invoked as part of VACUUM, too). pg_statistic redesigned to be more flexible about what statistics are stored. ANALYZE now collects a list of several of the most common values, not just one, plus a histogram (not just the min and max values). Random sampling is used to make the process reasonably fast even on very large tables. The number of values and histogram bins collected is now user-settable via an ALTER TABLE command. There is more still to do; the new stats are not being used everywhere they could be in the planner. But the remaining changes for this project should be localized, and the behavior is already better than before. A not-very-related change is that sorting now makes use of btree comparison routines if it can find one, rather than invoking '<' twice.
2001-05-07 02:43:27 +02:00
* header file for postgres vacuum cleaner and statistics analyzer
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +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
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
*
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass.
2001-11-05 18:46:40 +01:00
* $Id: vacuum.h,v 1.43 2001/11/05 17:46:33 momjian Exp $
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
*
*-------------------------------------------------------------------------
*/
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
#ifndef VACUUM_H
#define VACUUM_H
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
Create a new HeapTupleSatisfiesVacuum() routine in tqual.c that embodies the validity checking rules for VACUUM. Make some other rearrangements of the VACUUM code to allow more code to be shared between full and lazy VACUUM. Minor code cleanups and added comments for TransactionId manipulations.
2001-07-12 06:11:13 +02:00
#include <time.h>
#include <sys/time.h>
#ifdef HAVE_GETRUSAGE
#include <sys/resource.h>
#else
#include "rusagestub.h"
#endif
Rewrite of planner statistics-gathering code. ANALYZE is now available as a separate statement (though it can still be invoked as part of VACUUM, too). pg_statistic redesigned to be more flexible about what statistics are stored. ANALYZE now collects a list of several of the most common values, not just one, plus a histogram (not just the min and max values). Random sampling is used to make the process reasonably fast even on very large tables. The number of values and histogram bins collected is now user-settable via an ALTER TABLE command. There is more still to do; the new stats are not being used everywhere they could be in the planner. But the remaining changes for this project should be localized, and the behavior is already better than before. A not-very-related change is that sorting now makes use of btree comparison routines if it can find one, rather than invoking '<' twice.
2001-05-07 02:43:27 +02:00
#include "nodes/parsenodes.h"
Initial implementation of concurrent VACUUM. Ifdef'd out for the moment, because index locking issues are not handled correctly yet. Need to go work on the index AMs next.
2001-07-14 00:55:59 +02:00
#include "utils/rel.h"
pgindent run before 6.3 release, with Thomas' requested changes.
1998-02-26 05:46:47 +01:00
Add attribute optimization statistics.
1997-02-07 17:24:12 +01:00
Create a new HeapTupleSatisfiesVacuum() routine in tqual.c that embodies the validity checking rules for VACUUM. Make some other rearrangements of the VACUUM code to allow more code to be shared between full and lazy VACUUM. Minor code cleanups and added comments for TransactionId manipulations.
2001-07-12 06:11:13 +02:00
/* State structure for vac_init_rusage/vac_show_rusage */
typedef struct VacRUsage
{
pgindent run on all C files. Java run to follow. initdb/regression tests pass.
2001-10-25 07:50:21 +02:00
struct timeval tv;
struct rusage ru;
Create a new HeapTupleSatisfiesVacuum() routine in tqual.c that embodies the validity checking rules for VACUUM. Make some other rearrangements of the VACUUM code to allow more code to be shared between full and lazy VACUUM. Minor code cleanups and added comments for TransactionId manipulations.
2001-07-12 06:11:13 +02:00
} VacRUsage;
Rewrite of planner statistics-gathering code. ANALYZE is now available as a separate statement (though it can still be invoked as part of VACUUM, too). pg_statistic redesigned to be more flexible about what statistics are stored. ANALYZE now collects a list of several of the most common values, not just one, plus a histogram (not just the min and max values). Random sampling is used to make the process reasonably fast even on very large tables. The number of values and histogram bins collected is now user-settable via an ALTER TABLE command. There is more still to do; the new stats are not being used everywhere they could be in the planner. But the remaining changes for this project should be localized, and the behavior is already better than before. A not-very-related change is that sorting now makes use of btree comparison routines if it can find one, rather than invoking '<' twice.
2001-05-07 02:43:27 +02:00
/* in commands/vacuum.c */
extern void vacuum(VacuumStmt *vacstmt);
Initial implementation of concurrent VACUUM. Ifdef'd out for the moment, because index locking issues are not handled correctly yet. Need to go work on the index AMs next.
2001-07-14 00:55:59 +02:00
extern void vac_open_indexes(Relation relation, int *nindexes,
pgindent run on all C files. Java run to follow. initdb/regression tests pass.
2001-10-25 07:50:21 +02:00
Relation **Irel);
Initial implementation of concurrent VACUUM. Ifdef'd out for the moment, because index locking issues are not handled correctly yet. Need to go work on the index AMs next.
2001-07-14 00:55:59 +02:00
extern void vac_close_indexes(int nindexes, Relation *Irel);
Install infrastructure for shared-memory free space map. Doesn't actually do anything yet, but it has the necessary connections to initialization and so forth. Make some gestures towards allowing number of blocks in a relation to be BlockNumber, ie, unsigned int, rather than signed int. (I doubt I got all the places that are sloppy about it, yet.) On the way, replace the hardwired NLOCKS_PER_XACT fudge factor with a GUC variable.
2001-06-28 01:31:40 +02:00
extern void vac_update_relstats(Oid relid,
pgindent run on all C files. Java run to follow. initdb/regression tests pass.
2001-10-25 07:50:21 +02:00
BlockNumber num_pages,
double num_tuples,
bool hasindex);
Transaction IDs wrap around, per my proposal of 13-Aug-01. More documentation to come, but the code is all here. initdb forced.
2001-08-26 18:56:03 +02:00
extern void vacuum_set_xid_limits(VacuumStmt *vacstmt, bool sharedRel,
pgindent run on all C files. Java run to follow. initdb/regression tests pass.
2001-10-25 07:50:21 +02:00
TransactionId *oldestXmin,
TransactionId *freezeLimit);
New-style vacuum neglected to update pg_class statistics about indexes if there were no deletions to do.
2001-07-18 02:46:25 +02:00
extern bool vac_is_partial_index(Relation indrel);
Create a new HeapTupleSatisfiesVacuum() routine in tqual.c that embodies the validity checking rules for VACUUM. Make some other rearrangements of the VACUUM code to allow more code to be shared between full and lazy VACUUM. Minor code cleanups and added comments for TransactionId manipulations.
2001-07-12 06:11:13 +02:00
extern void vac_init_rusage(VacRUsage *ru0);
extern const char *vac_show_rusage(VacRUsage *ru0);
Initial implementation of concurrent VACUUM. Ifdef'd out for the moment, because index locking issues are not handled correctly yet. Need to go work on the index AMs next.
2001-07-14 00:55:59 +02:00
/* in commands/vacuumlazy.c */
extern void lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt);
Rewrite of planner statistics-gathering code. ANALYZE is now available as a separate statement (though it can still be invoked as part of VACUUM, too). pg_statistic redesigned to be more flexible about what statistics are stored. ANALYZE now collects a list of several of the most common values, not just one, plus a histogram (not just the min and max values). Random sampling is used to make the process reasonably fast even on very large tables. The number of values and histogram bins collected is now user-settable via an ALTER TABLE command. There is more still to do; the new stats are not being used everywhere they could be in the planner. But the remaining changes for this project should be localized, and the behavior is already better than before. A not-very-related change is that sorting now makes use of btree comparison routines if it can find one, rather than invoking '<' twice.
2001-05-07 02:43:27 +02:00
/* in commands/analyze.c */
extern void analyze_rel(Oid relid, VacuumStmt *vacstmt);
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments.
2001-10-28 07:26:15 +01:00
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass.
2001-11-05 18:46:40 +01:00
#endif /* VACUUM_H */
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