Age         Owner                  TLA  Line data    Source code

                                  1                 : /*-------------------------------------------------------------------------
                                  2                 :  *
                                  3                 :  * blcost.c
                                  4                 :  *      Cost estimate function for bloom indexes.
                                  5                 :  *
                                  6                 :  * Copyright (c) 2016-2025, PostgreSQL Global Development Group
                                  7                 :  *
                                  8                 :  * IDENTIFICATION
                                  9                 :  *    contrib/bloom/blcost.c
                                 10                 :  *
                                 11                 :  *-------------------------------------------------------------------------
                                 12                 :  */
                                 13                 : #include "postgres.h"
                                 14                 : 
                                 15                 : #include "bloom.h"
                                 16                 : #include "utils/selfuncs.h"
                                 17                 : 
                                 18                 : /*
                                 19                 :  * Estimate cost of bloom index scan.
                                 20                 :  */
                                 21                 : void
 3445 teodor@sigaev.ru           22 CBC         406 : blcostestimate(PlannerInfo *root, IndexPath *path, double loop_count,
                                 23                 :                Cost *indexStartupCost, Cost *indexTotalCost,
                                 24                 :                Selectivity *indexSelectivity, double *indexCorrelation,
                                 25                 :                double *indexPages)
                                 26                 : {
                                 27             406 :     IndexOptInfo *index = path->indexinfo;
 1148 peter@eisentraut.org       28             406 :     GenericCosts costs = {0};
                                 29                 : 
                                 30                 :     /* We have to visit all index tuples anyway */
 3445 teodor@sigaev.ru           31             406 :     costs.numIndexTuples = index->tuples;
                                 32                 : 
                                 33                 :     /* Use generic estimate */
 2395 tgl@sss.pgh.pa.us          34             406 :     genericcostestimate(root, path, loop_count, &costs);
                                 35                 : 
 3445 teodor@sigaev.ru           36             406 :     *indexStartupCost = costs.indexStartupCost;
                                 37             406 :     *indexTotalCost = costs.indexTotalCost;
                                 38             406 :     *indexSelectivity = costs.indexSelectivity;
                                 39             406 :     *indexCorrelation = costs.indexCorrelation;
 3125 rhaas@postgresql.org       40             406 :     *indexPages = costs.numIndexPages;
 3445 teodor@sigaev.ru           41             406 : }