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201
exp/Plugin/DebugKit/Lib/DebugTimer.php
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201
exp/Plugin/DebugKit/Lib/DebugTimer.php
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<?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 0.1
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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 and creating timers.
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*
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*/
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class DebugTimer {
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/**
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* Internal timers array
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*
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* @var array
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*/
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protected static $_timers = array();
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/**
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* Start an benchmarking timer.
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*
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* @param string $name The name of the timer to start.
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* @param string $message A message for your timer
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* @return boolean Always true
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*/
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public static function start($name = null, $message = null) {
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$start = microtime(true);
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if (!$name) {
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$named = false;
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$calledFrom = debug_backtrace();
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$_name = $name = Debugger::trimpath($calledFrom[0]['file']) . ' line ' . $calledFrom[0]['line'];
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} else {
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$named = true;
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}
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if (!$message) {
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$message = $name;
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}
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$_name = $name;
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$i = 1;
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while (isset(self::$_timers[$name])) {
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$i++;
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$name = $_name . ' #' . $i;
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}
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if ($i > 1) {
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$message .= ' #' . $i;
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}
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self::$_timers[$name] = array(
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'start' => $start,
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'message' => $message,
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'named' => $named
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);
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return true;
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}
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/**
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* Stop a benchmarking timer.
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*
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* $name should be the same as the $name used in startTimer().
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*
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* @param string $name The name of the timer to end.
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* @return boolean true if timer was ended, false if timer was not started.
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*/
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public static function stop($name = null) {
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$end = microtime(true);
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if (!$name) {
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$names = array_reverse(array_keys(self::$_timers));
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foreach ($names as $name) {
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if (!empty(self::$_timers[$name]['end'])) {
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continue;
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}
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if (empty(self::$_timers[$name]['named'])) {
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break;
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}
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}
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} else {
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$i = 1;
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$_name = $name;
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while (isset(self::$_timers[$name])) {
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if (empty(self::$_timers[$name]['end'])) {
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break;
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}
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$i++;
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$name = $_name . ' #' . $i;
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}
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}
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if (!isset(self::$_timers[$name])) {
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return false;
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}
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self::$_timers[$name]['end'] = $end;
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return true;
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}
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/**
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* Get all timers that have been started and stopped.
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* Calculates elapsed time for each timer. If clear is true, will delete existing timers
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*
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* @param boolean $clear false
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* @return array
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*/
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public static function getAll($clear = false) {
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$start = self::requestStartTime();
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$now = microtime(true);
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$times = array();
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if (!empty(self::$_timers)) {
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$firstTimer = reset(self::$_timers);
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$_end = $firstTimer['start'];
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} else {
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$_end = $now;
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}
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$times['Core Processing (Derived from $_SERVER["REQUEST_TIME"])'] = array(
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'message' => __d('debug_kit', 'Core Processing (Derived from $_SERVER["REQUEST_TIME"])'),
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'start' => 0,
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'end' => $_end - $start,
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'time' => round($_end - $start, 6),
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'named' => null
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);
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foreach (self::$_timers as $name => $timer) {
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if (!isset($timer['end'])) {
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$timer['end'] = $now;
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}
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$times[$name] = array_merge($timer, array(
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'start' => $timer['start'] - $start,
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'end' => $timer['end'] - $start,
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'time' => self::elapsedTime($name)
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));
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}
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if ($clear) {
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self::$_timers = array();
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}
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return $times;
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}
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/**
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* Clear all existing timers
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*
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* @return boolean true
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*/
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public static function clear() {
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self::$_timers = array();
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return true;
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}
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/**
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* Get the difference in time between the timer start and timer end.
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*
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* @param $name string the name of the timer you want elapsed time for.
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* @param $precision int the number of decimal places to return, defaults to 5.
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* @return float number of seconds elapsed for timer name, 0 on missing key
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*/
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public static function elapsedTime($name = 'default', $precision = 5) {
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if (!isset(self::$_timers[$name]['start']) || !isset(self::$_timers[$name]['end'])) {
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return 0;
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}
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return round(self::$_timers[$name]['end'] - self::$_timers[$name]['start'], $precision);
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}
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/**
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* Get the total execution time until this point
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*
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* @return float elapsed time in seconds since script start.
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*/
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public static function requestTime() {
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$start = self::requestStartTime();
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$now = microtime(true);
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return ($now - $start);
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}
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/**
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* get the time the current request started.
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*
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* @return float time of request start
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*/
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public static function requestStartTime() {
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if (defined('TIME_START')) {
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$startTime = TIME_START;
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} elseif (isset($GLOBALS['TIME_START'])) {
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$startTime = $GLOBALS['TIME_START'];
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} else {
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$startTime = env('REQUEST_TIME');
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}
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return $startTime;
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}
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}
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