Stopwatch.md

Stopwatch

The Stopwatch component provides a way to profile code.

• 在symfony中使用

    $ php bin/console debug:container stopwatch
     Select one of the following services to display its information [debug.stopwatch]:
      [0] debug.stopwatch
     > 0
     Information for Service "debug.stopwatch"
     =========================================
    
     ------------------ ---------------------------------------
      Option             Value
     ------------------ ---------------------------------------
      Service ID         debug.stopwatch
      Class              Symfony\Component\Stopwatch\Stopwatch
      Tags               -
      Public             yes
      Synthetic          no
      Lazy               no
      Shared             yes
      Abstract           no
      Autowired          no
      Autowiring Types   -
     ------------------ ---------------------------------------
  

  DefaultController.php

    <?php
  
    namespace KitWebBundle\Controller;
    
    class DefaultController extends BaseController
    {
        public function indexAction()
        {
            /**
             * 
             * @var \Symfony\Component\Stopwatch\Stopwatch $stopwatch
             */
            $stopwatch = $this->get('debug.stopwatch');
            $stopwatch->start('news', 'cate1');
            /**
             * @var $repository \KitNewsBundle\Repository\NewsRepository
             */
            $repository = $this->getDoctrine()->getRepository('KitNewsBundle:News');
            $top1 = $repository->getListPage(2, 0, 10);
            $top2 = $repository->getListPage(3, 0, 10);
            $stopwatch->lap('news');
            
            $bottom1 = $repository->getListPage(4, 0, 10);
            $bottom2 = $repository->getListPage(5, 0, 10);
            $stopwatch->lap('news');
            
            $notice = $repository->getListPage(6, 0, 10);
            $images = $repository->getListPage(null, 0, 12);
            $toutiao = $repository->getToutiao(1);
            $event = $stopwatch->stop('news');
            dump($event);
    		dump($event->getPeriods()); // 获取各个节点之间的时间信息
            dump($event->getCategory());   // Returns the category the event was started in
            dump($event->getOrigin());     // Returns the event start time in milliseconds
            dump($event->ensureStopped()); // Stops all periods not already stopped
            dump($event->getStartTime());  // Returns the start time of the very first period
            dump($event->getEndTime());    // Returns the end time of the very last period
            dump($event->getDuration());   // Returns the event duration, including all periods
            dump($event->getMemory());     // Returns the max memory usage of all periods
            
            return $this->render('KitWebBundle:Default:index.html.twig', [
                'nav' => 1,
                'toutiao' => $toutiao,
                'top1' => $top1,
                'top2' => $top2,
                'bottom1' => $bottom1,
                'bottom2' => $bottom2,
                'notice' => $notice,
                'images' => $images
            ]);
        }
    }
  

  Dump contents

    In DefaultController.php line 31:
    StopwatchEvent {#671 ▼
      -periods: array:3 [▼
        0 => StopwatchPeriod {#625 ▼
          -start: 207
          -end: 638
          -memory: 2097152
        }
        1 => StopwatchPeriod {#626 ▼
          -start: 638
          -end: 639
          -memory: 2097152
        }
        2 => StopwatchPeriod {#544 ▼
          -start: 639
          -end: 641
          -memory: 2097152
        }
      ]
      -origin: 1504143123626.9
      -category: "cate1"
      -started: []
    }
    In DefaultController.php line 32:
    "cate1"
    In DefaultController.php line 33:
    1504143123626.9
    In DefaultController.php line 34:
    null
    In DefaultController.php line 35:
    207
    In DefaultController.php line 36:
    641
    In DefaultController.php line 37:
    434
    In DefaultController.php line 38:
    2097152
  

  Sections

    $stopwatch->openSection();
    $stopwatch->start('parsing_config_file', 'filesystem_operations');
    $stopwatch->stopSection('routing');
    
    $events = $stopwatch->getSectionEvents('routing');
    // reopen
    $stopwatch->openSection('routing');
    $stopwatch->start('building_config_tree');
    $stopwatch->stopSection('routing');