<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014 - 2016, British Columbia Institute of Technology * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @package CodeIgniter * @author EllisLab Dev Team * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/) * @copyright Copyright (c) 2014 - 2016, British Columbia Institute of Technology (http://bcit.ca/) * @license http://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 1.0.0 * @filesource */ defined('BASEPATH') OR exit('No direct script access allowed'); /** * Benchmark Class * * This class enables you to mark points and calculate the time difference * between them. Memory consumption can also be displayed. * * @package CodeIgniter * @subpackage Libraries * @category Libraries * @author EllisLab Dev Team * @link https://codeigniter.com/user_guide/libraries/benchmark.html */ class CI_Benchmark { /** * List of all benchmark markers * * @var array */ public $marker = array(); /** * Set a benchmark marker * * Multiple calls to this function can be made so that several * execution points can be timed. * * @param string $name Marker name * @return void */ public function mark($name) { $this->marker[$name] = microtime(TRUE); } // -------------------------------------------------------------------- /** * Elapsed time * * Calculates the time difference between two marked points. * * If the first parameter is empty this function instead returns the * {elapsed_time} pseudo-variable. This permits the full system * execution time to be shown in a template. The output class will * swap the real value for this variable. * * @param string $point1 A particular marked point * @param string $point2 A particular marked point * @param int $decimals Number of decimal places * * @return string Calculated elapsed time on success, * an '{elapsed_string}' if $point1 is empty * or an empty string if $point1 is not found. */ public function elapsed_time($point1 = '', $point2 = '', $decimals = 4) { if ($point1 === '') { return '{elapsed_time}'; } if ( ! isset($this->marker[$point1])) { return ''; } if ( ! isset($this->marker[$point2])) { $this->marker[$point2] = microtime(TRUE); } return number_format($this->marker[$point2] - $this->marker[$point1], $decimals); } // -------------------------------------------------------------------- /** * Memory Usage * * Simply returns the {memory_usage} marker. * * This permits it to be put it anywhere in a template * without the memory being calculated until the end. * The output class will swap the real value for this variable. * * @return string '{memory_usage}' */ public function memory_usage() { return '{memory_usage}'; } }