diff options
Diffstat (limited to 'src/include/optimizer/geqo.h')
| -rw-r--r-- | src/include/optimizer/geqo.h | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/src/include/optimizer/geqo.h b/src/include/optimizer/geqo.h index e1229c3e1a9..34b7065f76c 100644 --- a/src/include/optimizer/geqo.h +++ b/src/include/optimizer/geqo.h @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: geqo.h,v 1.23 2001/01/24 19:43:26 momjian Exp $ + * $Id: geqo.h,v 1.24 2001/03/22 04:00:53 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -46,21 +46,25 @@ * Configuration options */ /* If you change these, update backend/utils/misc/postgresql.sample.conf */ -extern int Geqo_pool_size; -#define DEFAULT_GEQO_POOL_SIZE 0 /* = default based on no. of relations. */ +extern int Geqo_pool_size; + +#define DEFAULT_GEQO_POOL_SIZE 0/* = default based on no. of relations. */ #define MIN_GEQO_POOL_SIZE 128 #define MAX_GEQO_POOL_SIZE 1024 -extern int Geqo_effort; /* 1 .. inf, only used to calculate generations default */ -extern int Geqo_generations; /* 1 .. inf, or 0 to use default based on pool size */ +extern int Geqo_effort; /* 1 .. inf, only used to calculate + * generations default */ +extern int Geqo_generations; /* 1 .. inf, or 0 to use default based on + * pool size */ + +extern double Geqo_selection_bias; -extern double Geqo_selection_bias; /* If you change these, update backend/utils/misc/postgresql.sample.conf */ #define DEFAULT_GEQO_SELECTION_BIAS 2.0 #define MIN_GEQO_SELECTION_BIAS 1.5 #define MAX_GEQO_SELECTION_BIAS 2.0 -extern int Geqo_random_seed; /* or negative to use current time */ +extern int Geqo_random_seed; /* or negative to use current time */ /* routines in geqo_main.c */ @@ -68,9 +72,9 @@ extern RelOptInfo *geqo(Query *root, int number_of_rels, List *initial_rels); /* routines in geqo_eval.c */ extern Cost geqo_eval(Query *root, List *initial_rels, - Gene *tour, int num_gene); + Gene *tour, int num_gene); extern RelOptInfo *gimme_tree(Query *root, List *initial_rels, - Gene *tour, int num_gene, - int rel_count, RelOptInfo *old_rel); + Gene *tour, int num_gene, + int rel_count, RelOptInfo *old_rel); #endif /* GEQO_H */ |