1997-02-19 13:59:07 +01:00
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/*-------------------------------------------------------------------------
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*
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1999-02-14 00:22:53 +01:00
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* geqo.h
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1997-09-07 07:04:48 +02:00
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* prototypes for various files in optimizer/geqo
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1997-02-19 13:59:07 +01:00
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*
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2019-01-02 18:44:25 +01:00
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* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
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2000-01-26 06:58:53 +01:00
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* Portions Copyright (c) 1994, Regents of the University of California
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1997-02-19 13:59:07 +01:00
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*
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2010-09-20 22:08:53 +02:00
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* src/include/optimizer/geqo.h
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1997-02-19 13:59:07 +01:00
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*
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*-------------------------------------------------------------------------
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*/
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/* contributed by:
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=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
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1997-09-07 07:04:48 +02:00
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* Martin Utesch * Institute of Automatic Control *
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= = University of Mining and Technology =
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* utesch@aut.tu-freiberg.de * Freiberg, Germany *
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1997-02-19 13:59:07 +01:00
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=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
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*/
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1997-09-07 07:04:48 +02:00
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#ifndef GEQO_H
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#define GEQO_H
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1997-02-19 13:59:07 +01:00
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1997-11-26 02:14:33 +01:00
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#include "nodes/relation.h"
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#include "optimizer/geqo_gene.h"
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1997-02-19 13:59:07 +01:00
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2004-01-24 00:54:21 +01:00
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1997-02-19 13:59:07 +01:00
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/* GEQO debug flag */
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/*
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#define GEQO_DEBUG
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2002-07-20 06:59:10 +02:00
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*/
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1997-02-19 13:59:07 +01:00
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2017-06-04 19:34:05 +02:00
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/* choose one recombination mechanism here */
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1997-02-19 13:59:07 +01:00
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/*
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#define ERX
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#define PMX
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#define CX
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#define PX
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#define OX1
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#define OX2
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*/
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#define ERX
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2000-05-31 02:28:42 +02:00
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/*
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* Configuration options
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2004-01-22 00:33:34 +01:00
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*
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2009-07-16 22:55:44 +02:00
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* If you change these, update backend/utils/misc/postgresql.conf.sample
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2000-05-31 02:28:42 +02:00
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*/
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2005-10-15 04:49:52 +02:00
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extern int Geqo_effort; /* 1 .. 10, knob for adjustment of defaults */
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1997-02-19 13:59:07 +01:00
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2004-01-24 00:54:21 +01:00
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#define DEFAULT_GEQO_EFFORT 5
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#define MIN_GEQO_EFFORT 1
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#define MAX_GEQO_EFFORT 10
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2001-03-22 05:01:46 +01:00
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2004-01-24 00:54:21 +01:00
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extern int Geqo_pool_size; /* 2 .. inf, or 0 to use default */
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2004-01-22 00:33:34 +01:00
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2004-01-24 00:54:21 +01:00
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extern int Geqo_generations; /* 1 .. inf, or 0 to use default */
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2004-01-22 00:33:34 +01:00
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2001-03-22 05:01:46 +01:00
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extern double Geqo_selection_bias;
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1997-02-19 13:59:07 +01:00
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2000-05-31 02:28:42 +02:00
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#define DEFAULT_GEQO_SELECTION_BIAS 2.0
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#define MIN_GEQO_SELECTION_BIAS 1.5
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#define MAX_GEQO_SELECTION_BIAS 2.0
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1997-02-19 13:59:07 +01:00
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2009-07-16 22:55:44 +02:00
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extern double Geqo_seed; /* 0 .. 1 */
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1997-02-19 13:59:07 +01:00
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2004-01-24 00:54:21 +01:00
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/*
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2009-07-16 22:55:44 +02:00
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* Private state for a GEQO run --- accessible via root->join_search_private
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2004-01-24 00:54:21 +01:00
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*/
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typedef struct
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{
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2010-02-26 03:01:40 +01:00
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List *initial_rels; /* the base relations we are joining */
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Phase 2 of pgindent updates.
Change pg_bsd_indent to follow upstream rules for placement of comments
to the right of code, and remove pgindent hack that caused comments
following #endif to not obey the general rule.
Commit e3860ffa4dd0dad0dd9eea4be9cc1412373a8c89 wasn't actually using
the published version of pg_bsd_indent, but a hacked-up version that
tried to minimize the amount of movement of comments to the right of
code. The situation of interest is where such a comment has to be
moved to the right of its default placement at column 33 because there's
code there. BSD indent has always moved right in units of tab stops
in such cases --- but in the previous incarnation, indent was working
in 8-space tab stops, while now it knows we use 4-space tabs. So the
net result is that in about half the cases, such comments are placed
one tab stop left of before. This is better all around: it leaves
more room on the line for comment text, and it means that in such
cases the comment uniformly starts at the next 4-space tab stop after
the code, rather than sometimes one and sometimes two tabs after.
Also, ensure that comments following #endif are indented the same
as comments following other preprocessor commands such as #else.
That inconsistency turns out to have been self-inflicted damage
from a poorly-thought-through post-indent "fixup" in pgindent.
This patch is much less interesting than the first round of indent
changes, but also bulkier, so I thought it best to separate the effects.
Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
2017-06-21 21:18:54 +02:00
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unsigned short random_state[3]; /* state for pg_erand48() */
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2009-07-16 22:55:44 +02:00
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} GeqoPrivateData;
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2004-01-24 00:54:21 +01:00
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1999-05-17 02:25:34 +02:00
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/* routines in geqo_main.c */
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2005-06-06 00:32:58 +02:00
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extern RelOptInfo *geqo(PlannerInfo *root,
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2005-10-15 04:49:52 +02:00
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int number_of_rels, List *initial_rels);
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1997-02-19 13:59:07 +01:00
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1999-05-17 02:25:34 +02:00
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/* routines in geqo_eval.c */
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2009-07-16 22:55:44 +02:00
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extern Cost geqo_eval(PlannerInfo *root, Gene *tour, int num_gene);
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extern RelOptInfo *gimme_tree(PlannerInfo *root, Gene *tour, int num_gene);
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2001-10-28 07:26:15 +01:00
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|
Phase 2 of pgindent updates.
Change pg_bsd_indent to follow upstream rules for placement of comments
to the right of code, and remove pgindent hack that caused comments
following #endif to not obey the general rule.
Commit e3860ffa4dd0dad0dd9eea4be9cc1412373a8c89 wasn't actually using
the published version of pg_bsd_indent, but a hacked-up version that
tried to minimize the amount of movement of comments to the right of
code. The situation of interest is where such a comment has to be
moved to the right of its default placement at column 33 because there's
code there. BSD indent has always moved right in units of tab stops
in such cases --- but in the previous incarnation, indent was working
in 8-space tab stops, while now it knows we use 4-space tabs. So the
net result is that in about half the cases, such comments are placed
one tab stop left of before. This is better all around: it leaves
more room on the line for comment text, and it means that in such
cases the comment uniformly starts at the next 4-space tab stop after
the code, rather than sometimes one and sometimes two tabs after.
Also, ensure that comments following #endif are indented the same
as comments following other preprocessor commands such as #else.
That inconsistency turns out to have been self-inflicted damage
from a poorly-thought-through post-indent "fixup" in pgindent.
This patch is much less interesting than the first round of indent
changes, but also bulkier, so I thought it best to separate the effects.
Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
2017-06-21 21:18:54 +02:00
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|
#endif /* GEQO_H */
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