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