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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); |
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/** |
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* CodeIgniter |
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* |
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* An open source application development framework for PHP 5.1.6 or newer |
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* |
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* @package CodeIgniter |
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* @author ExpressionEngine Dev Team |
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* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. |
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* @license http://codeigniter.com/user_guide/license.html |
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* @link http://codeigniter.com |
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* @since Version 1.0 |
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* @filesource |
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*/ |
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|
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// ------------------------------------------------------------------------ |
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|
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/** |
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* CodeIgniter Benchmark Class |
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* |
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* This class enables you to mark points and calculate the time difference |
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* between them. Memory consumption can also be displayed. |
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* |
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* @package CodeIgniter |
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* @subpackage Libraries |
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* @category Libraries |
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* @author ExpressionEngine Dev Team |
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* @link http://codeigniter.com/user_guide/libraries/benchmark.html |
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*/ |
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class CI_Benchmark { |
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|
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/** |
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* List of all benchmark markers and when they were added |
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* |
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* @var array |
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*/ |
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var $marker = array(); |
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|
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// -------------------------------------------------------------------- |
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|
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/** |
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* Set a benchmark marker |
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* |
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* Multiple calls to this function can be made so that several |
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* execution points can be timed |
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* |
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* @access public |
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* @param string $name name of the marker |
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* @return void |
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*/ |
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function mark($name) |
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{ |
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$this->marker[$name] = microtime(); |
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} |
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|
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// -------------------------------------------------------------------- |
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|
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/** |
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* Calculates the time difference between two marked points. |
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* |
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* If the first parameter is empty this function instead returns the |
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* {elapsed_time} pseudo-variable. This permits the full system |
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* execution time to be shown in a template. The output class will |
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* swap the real value for this variable. |
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* |
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* @access public |
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* @param string a particular marked point |
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* @param string a particular marked point |
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* @param integer the number of decimal places |
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* @return mixed |
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*/ |
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function elapsed_time($point1 = '', $point2 = '', $decimals = 4) |
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{ |
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if ($point1 == '') |
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{ |
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return '{elapsed_time}'; |
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} |
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|
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if ( ! isset($this->marker[$point1])) |
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{ |
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return ''; |
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} |
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|
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if ( ! isset($this->marker[$point2])) |
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{ |
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$this->marker[$point2] = microtime(); |
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} |
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|
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list($sm, $ss) = explode(' ', $this->marker[$point1]); |
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list($em, $es) = explode(' ', $this->marker[$point2]); |
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|
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return number_format(($em + $es) - ($sm + $ss), $decimals); |
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} |
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|
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// -------------------------------------------------------------------- |
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|
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/** |
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* Memory Usage |
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* |
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* This function returns the {memory_usage} pseudo-variable. |
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* This permits it to be put it anywhere in a template |
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* without the memory being calculated until the end. |
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* The output class will swap the real value for this variable. |
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* |
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* @access public |
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* @return string |
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*/ |
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function memory_usage() |
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{ |
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return '{memory_usage}'; |
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} |
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|
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} |
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|
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// END CI_Benchmark class |
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|
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/* End of file Benchmark.php */ |
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/* Location: ./system/core/Benchmark.php */ |
