diff options
Diffstat (limited to 'src/include/optimizer/geqo.h')
| -rw-r--r-- | src/include/optimizer/geqo.h | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/src/include/optimizer/geqo.h b/src/include/optimizer/geqo.h index fc06006fd3..39226a7c7c 100644 --- a/src/include/optimizer/geqo.h +++ b/src/include/optimizer/geqo.h @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/optimizer/geqo.h,v 1.44 2009/01/01 17:24:00 momjian Exp $ + * $PostgreSQL: pgsql/src/include/optimizer/geqo.h,v 1.45 2009/07/16 20:55:44 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -46,7 +46,7 @@ /* * Configuration options * - * If you change these, update backend/utils/misc/postgresql.sample.conf + * If you change these, update backend/utils/misc/postgresql.conf.sample */ extern int Geqo_effort; /* 1 .. 10, knob for adjustment of defaults */ @@ -64,16 +64,17 @@ extern double Geqo_selection_bias; #define MIN_GEQO_SELECTION_BIAS 1.5 #define MAX_GEQO_SELECTION_BIAS 2.0 +extern double Geqo_seed; /* 0 .. 1 */ + /* - * Data structure to encapsulate information needed for building plan trees - * (i.e., geqo_eval and gimme_tree). + * Private state for a GEQO run --- accessible via root->join_search_private */ typedef struct { - PlannerInfo *root; /* the query we are planning */ - List *initial_rels; /* the base relations */ -} GeqoEvalData; + List *initial_rels; /* the base relations we are joining */ + unsigned short random_state[3]; /* state for erand48() */ +} GeqoPrivateData; /* routines in geqo_main.c */ @@ -81,8 +82,7 @@ extern RelOptInfo *geqo(PlannerInfo *root, int number_of_rels, List *initial_rels); /* routines in geqo_eval.c */ -extern Cost geqo_eval(Gene *tour, int num_gene, GeqoEvalData *evaldata); -extern RelOptInfo *gimme_tree(Gene *tour, int num_gene, - GeqoEvalData *evaldata); +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 */ |