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89 lines
3.3 KiB
C
89 lines
3.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* xfunc.h--
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* prototypes for xfunc.c and predmig.c.
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*
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: xfunc.h,v 1.11 1999/02/03 20:15:53 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef XFUNC_H
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#define XFUNC_H
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#include <utils/rel.h>
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#include <nodes/relation.h>
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/* command line arg flags */
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#define XFUNC_OFF -1 /* do no optimization of expensive preds */
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#define XFUNC_NOR 2 /* do no optimization of OR clauses */
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#define XFUNC_NOPULL 4 /* never pull restrictions above joins */
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#define XFUNC_NOPM 8 /* don't do predicate migration */
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#define XFUNC_WAIT 16 /* don't do pullup until predicate
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* migration */
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#define XFUNC_PULLALL 32 /* pull all expensive restrictions up,
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* always */
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/* constants for local and join predicates */
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#define XFUNC_LOCPRD 1
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#define XFUNC_JOINPRD 2
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#define XFUNC_UNKNOWN 0
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extern int XfuncMode; /* defined in tcop/postgres.c */
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/* defaults for function attributes used for expensive function calculations */
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#define BYTE_PCT 100
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#define PERBYTE_CPU 0
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#define PERCALL_CPU 0
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#define OUTIN_RATIO 100
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/* default width assumed for variable length attributes */
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#define VARLEN_DEFAULT 128;
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/* Macro to get group rank out of group cost and group sel */
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#define get_grouprank(a) ((get_groupsel(a) - 1) / get_groupcost(a))
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/* Macro to see if a path node is actually a Join */
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#define is_join(pathnode) (length(get_relids(get_parent(pathnode))) > 1 ? 1 : 0)
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/* function prototypes from planner/path/xfunc.c */
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extern void xfunc_trypullup(RelOptInfo * rel);
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extern int xfunc_shouldpull(Path *childpath, JoinPath *parentpath,
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int whichchild, RestrictInfo * maxcinfopt);
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extern RestrictInfo *xfunc_pullup(Path *childpath, JoinPath *parentpath, RestrictInfo * cinfo,
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int whichchild, int clausetype);
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extern Cost xfunc_rank(Expr *clause);
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extern Cost xfunc_expense(Query *queryInfo, Expr *clause);
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extern Cost xfunc_join_expense(JoinPath *path, int whichchild);
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extern Cost xfunc_local_expense(Expr *clause);
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extern Cost xfunc_func_expense(Expr *node, List *args);
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extern int xfunc_width(Expr *clause);
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/* static, moved to xfunc.c */
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/* extern int xfunc_card_unreferenced(Expr *clause, Relid referenced); */
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extern int xfunc_card_product(Relid relids);
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extern List *xfunc_find_references(List *clause);
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extern List *xfunc_primary_join(JoinPath *pathnode);
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extern Cost xfunc_get_path_cost(Path *pathnode);
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extern Cost xfunc_total_path_cost(JoinPath *pathnode);
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extern Cost xfunc_expense_per_tuple(JoinPath *joinnode, int whichchild);
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extern void xfunc_fixvars(Expr *clause, RelOptInfo * rel, int varno);
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extern int xfunc_cinfo_compare(void *arg1, void *arg2);
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extern int xfunc_clause_compare(void *arg1, void *arg2);
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extern void xfunc_disjunct_sort(List *clause_list);
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extern int xfunc_disjunct_compare(void *arg1, void *arg2);
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extern int xfunc_func_width(RegProcedure funcid, List *args);
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extern int xfunc_tuple_width(Relation rd);
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extern int xfunc_num_join_clauses(JoinPath *path);
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extern List *xfunc_LispRemove(List *foo, List *bar);
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extern bool xfunc_copyrel(RelOptInfo * from, RelOptInfo ** to);
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/*
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* function prototypes for path/predmig.c
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*/
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extern bool xfunc_do_predmig(Path root);
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#endif /* XFUNC_H */
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