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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
*
*
Change Copyright from PostgreSQL, Inc to PostgreSQL Global Development Group.
25 years ago
* 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.
26 years ago
* Portions Copyright (c) 1994, Regents of the University of California
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
* $Id: vacuum.h,v 1.37 2001/07/12 04:11:13 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"
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
#include "storage/block.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
{
struct timeval tv;
struct rusage ru;
} 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.
25 years ago
/* in commands/vacuum.c */
extern void vacuum(VacuumStmt *vacstmt);
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,
BlockNumber num_pages,
double num_tuples,
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
bool hasindex);
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);
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);
Massive commit to run PGINDENT on all *.c and *.h files.
28 years ago
OK, folks, here is the pgindent output.
27 years ago
#endif /* VACUUM_H */