82 lines
2 KiB
PHP
82 lines
2 KiB
PHP
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<?php
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/**
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* @file
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* Contains \Drupal\Component\Utility\Timer.
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*/
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namespace Drupal\Component\Utility;
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/**
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* Provides helpers to use timers throughout a request.
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*
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* @ingroup utility
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*/
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class Timer {
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static protected $timers = array();
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/**
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* Starts the timer with the specified name.
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*
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* If you start and stop the same timer multiple times, the measured intervals
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* will be accumulated.
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*
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* @param $name
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* The name of the timer.
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*/
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static public function start($name) {
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static::$timers[$name]['start'] = microtime(TRUE);
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static::$timers[$name]['count'] = isset(static::$timers[$name]['count']) ? ++static::$timers[$name]['count'] : 1;
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}
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/**
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* Reads the current timer value without stopping the timer.
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*
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* @param string $name
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* The name of the timer.
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*
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* @return int
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* The current timer value in ms.
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*/
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static public function read($name) {
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if (isset(static::$timers[$name]['start'])) {
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$stop = microtime(TRUE);
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$diff = round(($stop - static::$timers[$name]['start']) * 1000, 2);
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if (isset(static::$timers[$name]['time'])) {
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$diff += static::$timers[$name]['time'];
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}
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return $diff;
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}
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return static::$timers[$name]['time'];
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}
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/**
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* Stops the timer with the specified name.
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*
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* @param string $name
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* The name of the timer.
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*
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* @return array
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* A timer array. The array contains the number of times the timer has been
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* started and stopped (count) and the accumulated timer value in ms (time).
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*/
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static public function stop($name) {
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if (isset(static::$timers[$name]['start'])) {
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$stop = microtime(TRUE);
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$diff = round(($stop - static::$timers[$name]['start']) * 1000, 2);
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if (isset(static::$timers[$name]['time'])) {
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static::$timers[$name]['time'] += $diff;
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}
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else {
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static::$timers[$name]['time'] = $diff;
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}
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unset(static::$timers[$name]['start']);
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}
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return static::$timers[$name];
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}
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}
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