/home/edulekha/studygroup.edulekha.com/ow_utilities/profiler.php
<?php
/**
* EXHIBIT A. Common Public Attribution License Version 1.0
* The contents of this file are subject to the Common Public Attribution License Version 1.0 (the “License”);
* you may not use this file except in compliance with the License. You may obtain a copy of the License at
* http://www.oxwall.org/license. The License is based on the Mozilla Public License Version 1.1
* but Sections 14 and 15 have been added to cover use of software over a computer network and provide for
* limited attribution for the Original Developer. In addition, Exhibit A has been modified to be consistent
* with Exhibit B. Software distributed under the License is distributed on an “AS IS” basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language
* governing rights and limitations under the License. The Original Code is Oxwall software.
* The Initial Developer of the Original Code is Oxwall Foundation (http://www.oxwall.org/foundation).
* All portions of the code written by Oxwall Foundation are Copyright (c) 2011. All Rights Reserved.
* EXHIBIT B. Attribution Information
* Attribution Copyright Notice: Copyright 2011 Oxwall Foundation. All rights reserved.
* Attribution Phrase (not exceeding 10 words): Powered by Oxwall community software
* Attribution URL: http://www.oxwall.org/
* Graphic Image as provided in the Covered Code.
* Display of Attribution Information is required in Larger Works which are defined in the CPAL as a work
* which combines Covered Code or portions thereof with code not governed by the terms of the CPAL.
*/
/**
* Profiler utility.
*
* @author Sardar Madumarov <madumarov@gmail.com>
* @package ow_utilities
* @since 1.0
*/
class UTIL_Profiler
{
/**
* @var array
*/
private static $classInstances;
/**
* @var int
*/
private $checkPoints;
/**
* @var string
*/
private $key;
/**
* @var array
*/
private $result;
/**
* @var integer
*/
private $chkCounter;
/**
* Returns profiler result array
*
* @return array
*/
public function getResult()
{
$this->stop();
return $this->result;
}
/**
* Returns total time past from the start.
*
* @return float
*/
public function getTotalTime()
{
return (microtime(true) - $this->checkPoints['start']);
}
/**
* Constructor
*
* @param string
*/
private function __construct( $key )
{
$this->key = $key;
$this->reset();
}
/**
* Returns "single-tone" instance of class for every $key
*
* @param string $key #Profiler object identifier#
* @return UTIL_Profiler
*/
public static function getInstance( $key = '_ow_' )
{
if ( self::$classInstances === null )
{
self::$classInstances = array();
}
if ( !isset(self::$classInstances[$key]) )
{
self::$classInstances[$key] = new self($key);
}
return self::$classInstances[$key];
}
/**
* Sets new profiler checkpoint
*
* @param string $key
*/
public function mark( $key = null )
{
$this->checkPoints[( $key === null ? 'chk' . $this->chkCounter++ : $key)] = microtime(true);
}
/**
* Stops profiler and geberates result array
*/
private function stop()
{
$this->result['marks'] = array();
foreach ( $this->checkPoints as $key => $value )
{
$this->result['marks'][$key] = sprintf('%.3f', $value - $this->checkPoints['start']);
}
$endMark = $this->result['marks']['end'] = sprintf('%.3f', microtime(true) - $this->checkPoints['start']);
$this->result['total'] = $endMark;
}
/**
* Resets profiler
*
*/
public function reset()
{
$this->checkPoints = array();
$this->checkPoints['start'] = microtime(true);
$this->result = array();
$this->chkCounter = 0;
}
}