freenetis-github/system/core/Benchmark.php @ master
| 8baed187 | Michal Kliment | <?php defined('SYSPATH') or die('No direct script access.');
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/**
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* Simple benchmarking.
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*
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* $Id: Benchmark.php 1767 2008-01-21 14:15:21Z Shadowhand $
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*
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* @package Core
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* @author Kohana Team
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* @copyright (c) 2007 Kohana Team
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* @license http://kohanaphp.com/license.html
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*/
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final class Benchmark {
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// Benchmark timestamps
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private static $marks;
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/**
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* Set a benchmark start point.
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*
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* @param string benchmark name
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* @return void
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*/
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public static function start($name)
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{
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if ( ! isset(self::$marks[$name]))
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{
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self::$marks[$name] = array
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(
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'start' => microtime(TRUE),
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'stop' => FALSE,
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'memory_start' => function_exists('memory_get_usage') ? memory_get_usage() : 0,
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'memory_stop' => FALSE
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);
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}
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}
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/**
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* Set a benchmark stop point.
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*
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* @param string benchmark name
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* @return void
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*/
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public static function stop($name)
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{
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if (isset(self::$marks[$name]) AND self::$marks[$name]['stop'] === FALSE)
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{
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self::$marks[$name]['stop'] = microtime(TRUE);
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self::$marks[$name]['memory_stop'] = function_exists('memory_get_usage') ? memory_get_usage() : 0;
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}
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}
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/**
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* Get the elapsed time between a start and stop.
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*
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* @param string benchmark name, TRUE for all
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* @param integer number of decimal places to count to
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* @return array
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*/
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public static function get($name, $decimals = 4)
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{
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if ($name === TRUE)
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{
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$times = array();
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foreach(array_keys(self::$marks) as $name)
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{
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// Get each mark recursively
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$times[$name] = self::get($name, $decimals);
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}
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// Return the array
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return $times;
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}
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if ( ! isset(self::$marks[$name]))
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return FALSE;
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if (self::$marks[$name]['stop'] === FALSE)
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{
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// Stop the benchmark to prevent mis-matched results
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self::stop($name);
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}
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// Return a string version of the time between the start and stop points
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// Properly reading a float requires using number_format or sprintf
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return array
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(
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'time' => number_format(self::$marks[$name]['stop'] - self::$marks[$name]['start'], $decimals),
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'memory' => (self::$marks[$name]['memory_stop'] - self::$marks[$name]['memory_start'])
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);
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}
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} // End Benchmark
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