blcost.c File Reference

#include "postgres.h"
#include "bloom.h"
#include "utils/selfuncs.h"

Include dependency graph for blcost.c:

Go to the source code of this file.

Functions
void	blcostestimate (PlannerInfo *root, IndexPath *path, double loop_count, Cost *indexStartupCost, Cost *indexTotalCost, Selectivity *indexSelectivity, double *indexCorrelation, double *indexPages)

Function Documentation

blcostestimate()

void blcostestimate	(	PlannerInfo *	root,
		IndexPath *	path,
		double	loop_count,
		Cost *	indexStartupCost,
		Cost *	indexTotalCost,
		Selectivity *	indexSelectivity,
		double *	indexCorrelation,
		double *	indexPages
	)

Definition at line 22 of file blcost.c.

{
    IndexOptInfo *index = path->indexinfo;
    GenericCosts costs = {0};
 
    /* We have to visit all index tuples anyway */
    costs.numIndexTuples = index->tuples;
 
    /* As in btcostestimate, count only the metapage as non-leaf */
    costs.numNonLeafPages = 1;
 
    /* Use generic estimate */
    genericcostestimate(root, path, loop_count, &costs);
 
    *indexStartupCost = costs.indexStartupCost;
    *indexTotalCost = costs.indexTotalCost;
    *indexSelectivity = costs.indexSelectivity;
    *indexCorrelation = costs.indexCorrelation;
    *indexPages = costs.numIndexPages;
}

References fb(), genericcostestimate(), GenericCosts::indexCorrelation, IndexPath::indexinfo, GenericCosts::indexSelectivity, GenericCosts::indexStartupCost, GenericCosts::indexTotalCost, GenericCosts::numIndexPages, GenericCosts::numIndexTuples, GenericCosts::numNonLeafPages, and root.

Referenced by blhandler().