File: /storage/v12674/lcaupstateny/public_html/wp-content/plugins/amp/src/Instrumentation/StopWatch.php
<?php
/**
* Class StopWatch.
*
* @package AmpProject\AmpWP
*/
namespace AmpProject\AmpWP\Instrumentation;
use AmpProject\AmpWP\Exception\InvalidStopwatchEvent;
/**
* Record the timing of multiple events.
*
* @package AmpProject\AmpWP
* @since 2.0
* @internal
*/
final class StopWatch {
/**
* Collection of named events that the stopwatch is tracking.
*
* @var StopWatchEvent[]
*/
private $events = [];
/**
* Start a named event.
*
* @param string $name Name of the event to start.
*/
public function start( $name ) {
$this->events[ $name ] = new StopWatchEvent();
}
/**
* Stop a named event.
*
* @param string $name Name of the event to stop.
* @return StopWatchEvent Completed stopwatch event.
* @throws InvalidStopwatchEvent If an unknown event name is provided.
*/
public function stop( $name ) {
if ( ! array_key_exists( $name, $this->events ) ) {
throw InvalidStopwatchEvent::from_name_to_stop( $name );
}
$event = $this->events[ $name ];
$event->stop();
return $event;
}
}