133 行
3.9 KiB
PHP
133 行
3.9 KiB
PHP
<?php
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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
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*
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* This content is released under the MIT License (MIT)
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*
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* Copyright (c) 2014 - 2019, British Columbia Institute of Technology
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @package CodeIgniter
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* @author EllisLab Dev Team
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* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
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* @license https://opensource.org/licenses/MIT MIT License
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* @link https://codeigniter.com
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* @since Version 1.0.0
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* @filesource
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*/
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defined('BASEPATH') OR exit('No direct script access allowed');
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/**
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* 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 EllisLab Dev Team
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* @link https://codeigniter.com/userguide3/libraries/benchmark.html
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*/
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class CI_Benchmark {
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/**
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* List of all benchmark markers
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*
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* @var array
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*/
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public $marker = array();
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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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* @param string $name Marker name
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* @return void
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*/
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public function mark($name)
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{
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$this->marker[$name] = microtime(TRUE);
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}
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// --------------------------------------------------------------------
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/**
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* Elapsed time
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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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* @param string $point1 A particular marked point
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* @param string $point2 A particular marked point
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* @param int $decimals Number of decimal places
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*
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* @return string Calculated elapsed time on success,
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* an '{elapsed_string}' if $point1 is empty
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* or an empty string if $point1 is not found.
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*/
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public function elapsed_time($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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if ( ! isset($this->marker[$point1]))
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{
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return '';
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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(TRUE);
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}
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return number_format($this->marker[$point2] - $this->marker[$point1], $decimals);
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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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* Simply returns the {memory_usage} marker.
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*
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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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* @return string '{memory_usage}'
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*/
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public 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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