99 lines
2.4 KiB
PHP
99 lines
2.4 KiB
PHP
<?php
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/**
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @since DebugKit 2.0
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* @license http://www.opensource.org/licenses/mit-license.php MIT License
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*/
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App::uses('Debugger', 'Utility');
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/**
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* Contains methods for Profiling memory usage.
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*
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*/
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class DebugMemory {
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/**
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* An array of recorded memory use points.
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*
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* @var array
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*/
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protected static $_points = array();
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/**
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* Get current memory usage
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*
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* @return integer number of bytes ram currently in use. 0 if memory_get_usage() is not available.
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*/
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public static function getCurrent() {
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return memory_get_usage();
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}
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/**
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* Get peak memory use
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*
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* @return integer peak memory use (in bytes). Returns 0 if memory_get_peak_usage() is not available
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*/
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public static function getPeak() {
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return memory_get_peak_usage();
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}
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/**
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* Stores a memory point in the internal tracker.
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* Takes a optional message name which can be used to identify the memory point.
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* If no message is supplied a debug_backtrace will be done to identify the memory point.
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*
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* @param string $message Message to identify this memory point.
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* @return boolean
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*/
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public static function record($message = null) {
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$memoryUse = self::getCurrent();
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if (!$message) {
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$named = false;
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$trace = debug_backtrace();
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$message = Debugger::trimpath($trace[0]['file']) . ' line ' . $trace[0]['line'];
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}
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if (isset(self::$_points[$message])) {
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$originalMessage = $message;
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$i = 1;
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while (isset(self::$_points[$message])) {
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$i++;
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$message = $originalMessage . ' #' . $i;
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}
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}
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self::$_points[$message] = $memoryUse;
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return true;
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}
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/**
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* Get all the stored memory points
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*
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* @param boolean $clear Whether you want to clear the memory points as well. Defaults to false.
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* @return array Array of memory marks stored so far.
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*/
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public static function getAll($clear = false) {
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$marks = self::$_points;
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if ($clear) {
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self::$_points = array();
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}
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return $marks;
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}
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/**
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* Clear out any existing memory points
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*
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* @return void
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*/
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public static function clear() {
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self::$_points = array();
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}
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}
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