Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/http-kernel/DataCollector/TimeDataCollector.php

@@ -0,0 +1,136 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\DataCollector;
+
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\KernelInterface;
+
+/**
+ * TimeDataCollector.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class TimeDataCollector extends DataCollector implements LateDataCollectorInterface
+{
+    protected $kernel;
+    protected $stopwatch;
+
+    public function __construct(KernelInterface $kernel = null, $stopwatch = null)
+    {
+        $this->kernel = $kernel;
+        $this->stopwatch = $stopwatch;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function collect(Request $request, Response $response, \Exception $exception = null)
+    {
+        if (null !== $this->kernel) {
+            $startTime = $this->kernel->getStartTime();
+        } else {
+            $startTime = $request->server->get('REQUEST_TIME_FLOAT', $request->server->get('REQUEST_TIME'));
+        }
+
+        $this->data = array(
+            'token' => $response->headers->get('X-Debug-Token'),
+            'start_time' => $startTime * 1000,
+            'events' => array(),
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function lateCollect()
+    {
+        if (null !== $this->stopwatch && isset($this->data['token'])) {
+            $this->setEvents($this->stopwatch->getSectionEvents($this->data['token']));
+        }
+        unset($this->data['token']);
+    }
+
+    /**
+     * Sets the request events.
+     *
+     * @param array $events The request events
+     */
+    public function setEvents(array $events)
+    {
+        foreach ($events as $event) {
+            $event->ensureStopped();
+        }
+
+        $this->data['events'] = $events;
+    }
+
+    /**
+     * Gets the request events.
+     *
+     * @return array The request events
+     */
+    public function getEvents()
+    {
+        return $this->data['events'];
+    }
+
+    /**
+     * Gets the request elapsed time.
+     *
+     * @return float The elapsed time
+     */
+    public function getDuration()
+    {
+        if (!isset($this->data['events']['__section__'])) {
+            return 0;
+        }
+
+        $lastEvent = $this->data['events']['__section__'];
+
+        return $lastEvent->getOrigin() + $lastEvent->getDuration() - $this->getStartTime();
+    }
+
+    /**
+     * Gets the initialization time.
+     *
+     * This is the time spent until the beginning of the request handling.
+     *
+     * @return float The elapsed time
+     */
+    public function getInitTime()
+    {
+        if (!isset($this->data['events']['__section__'])) {
+            return 0;
+        }
+
+        return $this->data['events']['__section__']->getOrigin() - $this->getStartTime();
+    }
+
+    /**
+     * Gets the request time.
+     *
+     * @return int The time
+     */
+    public function getStartTime()
+    {
+        return $this->data['start_time'];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return 'time';
+    }
+}