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<?php
//
// +----------------------------------------------------------------------+
// | PHP version 4.0 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997, 1998, 1999, 2000 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Sebastian Bergmann <sb@phpOpenTracker.de> |
// +----------------------------------------------------------------------+
//
// $Id: Iterate.php,v 1.1 2000/09/29 20:22:36 chagenbu Exp $
//
require_once "Benchmark/Timer.php";
/**
* Benchmark::Benchmark_Iterate
*
* Purpose:
*
* Benchmarking
*
* Example:
*
* $benchmark = new Benchmark_Iterate;
*
* $benchmark->run( "my_function", 100 );
*
* $result = $benchmark->get();
*
* @author Sebastian Bergmann <sb@phpOpenTracker.de>
* @version $Revision: 1.1 $
* @access public
*/
class Benchmark_Iterate extends Benchmark_Timer
{
// {{{ run()
/**
* Benchmarks a function.
*
* @param string $function name of the function to be benchmarked
* @param int $iterations number of iterations (default: 100)
* @access public
*/
function run( $function, $iterations = 100 )
{
for( $i = 1; $i <= $iterations; $i++ )
{
$this->set_marker( "start_" . $i );
call_user_func( $function );
$this->set_marker( "end_" . $i );
}
}
// }}}
// {{{ get()
/**
* Returns benchmark result.
*
* $result[ x ] = execution time of iteration x
* $result[ "mean" ] = mean execution time
* $result[ "iterations" ] = number of iterations
*
* @return array $result
* @access public
*/
function get()
{
$result = array();
$total = 0;
$iterations = count( $this->markers ) / 2;
for( $i = 1; $i <= $iterations; $i++ )
{
$time = $this->time_elapsed( "start_" . $i , "end_" . $i );
$total = bcadd( $total, $time, 6 );
$result[ $i ] = $time;
}
$result[ "mean" ] = bcdiv( $total, $iterations, 6 );
$result[ "iterations" ] = $iterations;
return $result;
}
// }}}
}
?>
|
