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postgres/src/include/commands/vacuum.h

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Postgres95 1.01 Distribution - Virgin Sources
30 years ago
/*-------------------------------------------------------------------------
*
Change my-function-name-- to my_function_name, and optimizer renames.
27 years ago
* 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.
25 years ago
* header file for postgres vacuum cleaner and statistics analyzer
Postgres95 1.01 Distribution - Virgin Sources
30 years ago
*
*
Update copyrights to 2003.
22 years ago
* Portions Copyright (c) 1996-2003, 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.
26 years ago
* Portions Copyright (c) 1994, Regents of the University of California
Postgres95 1.01 Distribution - Virgin Sources
30 years ago
*
Centralize implementation of delay code by creating a pg_usleep() subroutine in src/port/pgsleep.c. Remove platform dependencies from miscadmin.h and put them in port.h where they belong. Extend recent vacuum cost-based-delay patch to apply to VACUUM FULL, ANALYZE, and non-btree index vacuuming. By the way, where is the documentation for the cost-based-delay patch?
22 years ago
* $PostgreSQL: pgsql/src/include/commands/vacuum.h,v 1.48 2004/02/10 03:42:45 tgl Exp $
Postgres95 1.01 Distribution - Virgin Sources
30 years ago
*
*-------------------------------------------------------------------------
*/
Massive commit to run PGINDENT on all *.c and *.h files.
28 years ago
#ifndef VACUUM_H
#define VACUUM_H
Postgres95 1.01 Distribution - Virgin Sources
30 years ago
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.
25 years ago
#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.
25 years ago
#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.
25 years ago
#include "utils/rel.h"
pgindent run before 6.3 release, with Thomas' requested changes.
28 years ago
Add attribute optimization statistics.
29 years ago
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.
25 years ago
/* 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.
24 years ago
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.
25 years ago
} VacRUsage;
Instead of having a configure-time DEFAULT_ATTSTATTARGET, store -1 in attstattarget to indicate 'use the default'. The default is now a GUC variable default_statistics_target, and so may be changed on the fly. Along the way we gain the ability to have pg_dump dump the per-column statistics target when it's not the default. Patch by Neil Conway, with some kibitzing from Tom Lane.
23 years ago
/* Default statistics target (GUC parameter) */
extern int default_statistics_target;
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.
25 years ago
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.
25 years ago
/* 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.
25 years ago
extern void vac_open_indexes(Relation relation, int *nindexes,
pgindent run on all C files. Java run to follow. initdb/regression tests pass.
24 years ago
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.
25 years ago
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.
25 years ago
extern void vac_update_relstats(Oid relid,
pgindent run on all C files. Java run to follow. initdb/regression tests pass.
24 years ago
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.
24 years ago
extern void vacuum_set_xid_limits(VacuumStmt *vacstmt, bool sharedRel,
pgindent run on all C files. Java run to follow. initdb/regression tests pass.
24 years ago
TransactionId *oldestXmin,
TransactionId *freezeLimit);
New-style vacuum neglected to update pg_class statistics about indexes if there were no deletions to do.
25 years ago
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.
25 years ago
extern void vac_init_rusage(VacRUsage *ru0);
extern const char *vac_show_rusage(VacRUsage *ru0);
Centralize implementation of delay code by creating a pg_usleep() subroutine in src/port/pgsleep.c. Remove platform dependencies from miscadmin.h and put them in port.h where they belong. Extend recent vacuum cost-based-delay patch to apply to VACUUM FULL, ANALYZE, and non-btree index vacuuming. By the way, where is the documentation for the cost-based-delay patch?
22 years ago
extern void vacuum_delay_point(void);
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.
25 years ago
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.
25 years ago
/* 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.
25 years ago
/* 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.
24 years ago
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass.
24 years ago
#endif /* VACUUM_H */