Gecko [ www.finalhopeacademy.com ]

Name	Size	Permission
clauses.h	2.88 KB	-rw-r--r--
cost.h	7.33 KB	-rw-r--r--
geqo.h	2.12 KB	-rw-r--r--
geqo_copy.h	966 B	-rw-r--r--
geqo_gene.h	1.09 KB	-rw-r--r--
geqo_misc.h	1.1 KB	-rw-r--r--
geqo_mutation.h	959 B	-rw-r--r--
geqo_pool.h	1.29 KB	-rw-r--r--
geqo_random.h	1.28 KB	-rw-r--r--
geqo_recombination.h	2.58 KB	-rw-r--r--
geqo_selection.h	1015 B	-rw-r--r--
joininfo.h	836 B	-rw-r--r--
pathnode.h	5.53 KB	-rw-r--r--
paths.h	6.83 KB	-rw-r--r--
placeholder.h	1.2 KB	-rw-r--r--
plancat.h	1.65 KB	-rw-r--r--
planmain.h	5.1 KB	-rw-r--r--
planner.h	1.33 KB	-rw-r--r--
predtest.h	668 B	-rw-r--r--
prep.h	1.73 KB	-rw-r--r--
restrictinfo.h	1.71 KB	-rw-r--r--
subselect.h	1.38 KB	-rw-r--r--
tlist.h	1.69 KB	-rw-r--r--
var.h	1.5 KB	-rw-r--r--

Code Editor : geqo.h

/*-------------------------------------------------------------------------
 *
 * geqo.h
 *	  prototypes for various files in optimizer/geqo
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/optimizer/geqo.h
 *
 *-------------------------------------------------------------------------
 */

/* contributed by:
   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
   *  Martin Utesch				 * Institute of Automatic Control	   *
   =							 = University of Mining and Technology =
   *  utesch@aut.tu-freiberg.de  * Freiberg, Germany				   *
   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
 */

#ifndef GEQO_H
#define GEQO_H

#include "nodes/relation.h"
#include "optimizer/geqo_gene.h"

/* GEQO debug flag */
/*
 #define GEQO_DEBUG
 */

/* recombination mechanism */
/*
 #define ERX
 #define PMX
 #define CX
 #define PX
 #define OX1
 #define OX2
 */
#define ERX

/*
 * Configuration options
 *
 * If you change these, update backend/utils/misc/postgresql.conf.sample
 */
extern int	Geqo_effort;		/* 1 .. 10, knob for adjustment of defaults */

#define DEFAULT_GEQO_EFFORT 5
#define MIN_GEQO_EFFORT 1
#define MAX_GEQO_EFFORT 10

extern int	Geqo_pool_size;		/* 2 .. inf, or 0 to use default */

extern int	Geqo_generations;	/* 1 .. inf, or 0 to use default */

extern double Geqo_selection_bias;

#define DEFAULT_GEQO_SELECTION_BIAS 2.0
#define MIN_GEQO_SELECTION_BIAS 1.5
#define MAX_GEQO_SELECTION_BIAS 2.0

extern double Geqo_seed;		/* 0 .. 1 */

/*
 * Private state for a GEQO run --- accessible via root->join_search_private
 */
typedef struct
{
	List	   *initial_rels;	/* the base relations we are joining */
	unsigned short random_state[3];		/* state for pg_erand48() */
} GeqoPrivateData;

/* routines in geqo_main.c */
extern RelOptInfo *geqo(PlannerInfo *root,
	 int number_of_rels, List *initial_rels);

/* routines in geqo_eval.c */
extern Cost geqo_eval(PlannerInfo *root, Gene *tour, int num_gene);
extern RelOptInfo *gimme_tree(PlannerInfo *root, Gene *tour, int num_gene);

#endif   /* GEQO_H */

${this.title}

Code Editor : geqo.h