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view core/lib/Drupal/Component/Utility/Timer.php @ 19:fa3358dc1485 tip
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author | Chris Cannam |
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date | Wed, 28 Aug 2019 13:14:47 +0100 |
parents | af1871eacc83 |
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<?php namespace Drupal\Component\Utility; /** * Provides helpers to use timers throughout a request. * * @ingroup utility */ class Timer { protected static $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]; } }