diff options
Diffstat (limited to 'src/include/optimizer/cost.h')
| -rw-r--r-- | src/include/optimizer/cost.h | 77 |
1 files changed, 41 insertions, 36 deletions
diff --git a/src/include/optimizer/cost.h b/src/include/optimizer/cost.h index f045e47b0bf..bb50d92948c 100644 --- a/src/include/optimizer/cost.h +++ b/src/include/optimizer/cost.h @@ -1,12 +1,12 @@ /*------------------------------------------------------------------------- * * cost.h-- - * prototypes for costsize.c and clausesel.c. + * prototypes for costsize.c and clausesel.c. * * * Copyright (c) 1994, Regents of the University of California * - * $Id: cost.h,v 1.2 1997/08/19 21:39:18 momjian Exp $ + * $Id: cost.h,v 1.3 1997/09/07 04:58:56 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -15,43 +15,48 @@ /* * prototypes for costsize.c-- - * routines to compute costs and sizes - */ -extern bool _enable_seqscan_; -extern bool _enable_indexscan_; -extern bool _enable_sort_; -extern bool _enable_hash_; -extern bool _enable_nestloop_; -extern bool _enable_mergesort_; -extern bool _enable_hashjoin_; + * routines to compute costs and sizes + */ +extern bool _enable_seqscan_; +extern bool _enable_indexscan_; +extern bool _enable_sort_; +extern bool _enable_hash_; +extern bool _enable_nestloop_; +extern bool _enable_mergesort_; +extern bool _enable_hashjoin_; -extern Cost cost_seqscan(int relid, int relpages, int reltuples); -extern Cost cost_index(Oid indexid, int expected_indexpages, Cost selec, - int relpages, int reltuples, int indexpages, - int indextuples, bool is_injoin); -extern Cost cost_sort(List *keys, int tuples, int width, bool noread); -extern Cost cost_nestloop(Cost outercost, Cost innercost, int outertuples, - int innertuples, int outerpages, bool is_indexjoin); -extern Cost cost_mergesort(Cost outercost, Cost innercost, - List *outersortkeys, List *innersortkeys, - int outersize, int innersize, int outerwidth, int innerwidth); -extern Cost cost_hashjoin(Cost outercost, Cost innercost, List *outerkeys, - List *innerkeys, int outersize, int innersize, - int outerwidth, int innerwidth); -extern int compute_rel_size(Rel *rel); -extern int compute_rel_width(Rel *rel); -extern int compute_joinrel_size(JoinPath *joinpath); -extern int page_size(int tuples, int width); +extern Cost cost_seqscan(int relid, int relpages, int reltuples); +extern Cost +cost_index(Oid indexid, int expected_indexpages, Cost selec, + int relpages, int reltuples, int indexpages, + int indextuples, bool is_injoin); +extern Cost cost_sort(List * keys, int tuples, int width, bool noread); +extern Cost +cost_nestloop(Cost outercost, Cost innercost, int outertuples, + int innertuples, int outerpages, bool is_indexjoin); +extern Cost +cost_mergesort(Cost outercost, Cost innercost, + List * outersortkeys, List * innersortkeys, + int outersize, int innersize, int outerwidth, int innerwidth); +extern Cost +cost_hashjoin(Cost outercost, Cost innercost, List * outerkeys, + List * innerkeys, int outersize, int innersize, + int outerwidth, int innerwidth); +extern int compute_rel_size(Rel * rel); +extern int compute_rel_width(Rel * rel); +extern int compute_joinrel_size(JoinPath * joinpath); +extern int page_size(int tuples, int width); /* * prototypes for fuctions in clausesel.h-- - * routines to compute clause selectivities + * routines to compute clause selectivities */ -extern void set_clause_selectivities(List *clauseinfo_list, Cost new_selectivity); -extern Cost product_selec(List *clauseinfo_list); -extern void set_rest_relselec(Query *root, List *rel_list); -extern void set_rest_selec(Query *root,List *clauseinfo_list); -extern Cost compute_clause_selec(Query *root, - Node *clause, List *or_selectivities); +extern void set_clause_selectivities(List * clauseinfo_list, Cost new_selectivity); +extern Cost product_selec(List * clauseinfo_list); +extern void set_rest_relselec(Query * root, List * rel_list); +extern void set_rest_selec(Query * root, List * clauseinfo_list); +extern Cost +compute_clause_selec(Query * root, + Node * clause, List * or_selectivities); -#endif /* COST_H */ +#endif /* COST_H */ |