class Section in Devel 4.x

@internal This class is for internal usage only

Original author Fabien Potencier <[e-mail]>

Hierarchy

• class \Drupal\webprofiler\Section

File

webprofiler/src/Stopwatch.php, line 159

Namespace

Drupal\webprofiler

class Section {

  /**
   * @var \Symfony\Component\Stopwatch\StopwatchEvent[]
   */
  private $events = [];

  /**
   * @var null|float
   */
  private $origin;

  /**
   * @var string
   */
  private $id;

  /**
   * @var Section[]
   */
  private $children = [];

  /**
   * Constructor.
   *
   * @param float|null $origin
   *   Set the origin of the events in this section, use null to set their
   *   origin to their start time.
   */
  public function __construct($origin = NULL) {
    $this->origin = is_numeric($origin) ? $origin : NULL;
  }

  /**
   * Returns the child section.
   *
   * @param string $id
   *   The child section identifier.
   *
   * @return Section|null
   *   The child section or null when none found
   */
  public function get($id) {
    foreach ($this->children as $child) {
      if ($id === $child
        ->getId()) {
        return $child;
      }
    }
    return NULL;
  }

  /**
   * Creates or re-opens a child section.
   *
   * @param string|null $id
   *   Null to create a new section, the identifier to re-open an existing
   *   one.
   *
   * @return Section
   *   A child section
   */
  public function open($id) {
    if (NULL === ($session = $this
      ->get($id))) {
      $session = $this->children[] = new self(microtime(TRUE) * 1000);
    }
    return $session;
  }

  /**
   * @return string
   *   The identifier of the section
   */
  public function getId() {
    return $this->id;
  }

  /**
   * Sets the session identifier.
   *
   * @param string $id
   *   The session identifier.
   *
   * @return Section
   *   The current section
   */
  public function setId($id) {
    $this->id = $id;
    return $this;
  }

  /**
   * Starts an event.
   *
   * @param string $name
   *   The event name.
   * @param string $category
   *   The event category.
   *
   * @return \Symfony\Component\Stopwatch\StopwatchEvent
   *   The event
   */
  public function startEvent($name, $category) {
    if (!isset($this->events[$name])) {
      $this->events[$name] = new StopwatchEvent($this->origin ?: microtime(TRUE) * 1000, $category);
    }
    return $this->events[$name]
      ->start();
  }

  /**
   * Checks if an event was started.
   *
   * @param string $name
   *   The event name.
   *
   * @return bool
   *   True if the specified event was started.
   */
  public function isEventStarted($name) {
    return isset($this->events[$name]) && $this->events[$name]
      ->isStarted();
  }

  /**
   * Stops an event.
   *
   * @param string $name
   *   The event name.
   *
   * @return \Symfony\Component\Stopwatch\StopwatchEvent
   *   The event.
   *
   * @throws \LogicException
   *   When the event has not been started.
   */
  public function stopEvent($name) {
    if (!isset($this->events[$name])) {
      throw new \LogicException(sprintf('Event "%s" is not started.', $name));
    }
    return $this->events[$name]
      ->stop();
  }

  /**
   * Stops then restarts an event.
   *
   * @param string $name
   *   The event name.
   *
   * @return \Symfony\Component\Stopwatch\StopwatchEvent
   *   The event.
   *
   * @throws \LogicException
   *   When the event has not been started.
   */
  public function lap($name) {
    return $this
      ->stopEvent($name)
      ->start();
  }

  /**
   * Returns the events from this section.
   *
   * @return \Symfony\Component\Stopwatch\StopwatchEvent[]
   *   An array of StopwatchEvent instances
   */
  public function getEvents() {
    return $this->events;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
Section::$children	private	property
Section::$events	private	property
Section::$id	private	property
Section::$origin	private	property
Section::get	public	function	Returns the child section.
Section::getEvents	public	function	Returns the events from this section.
Section::getId	public	function
Section::isEventStarted	public	function	Checks if an event was started.
Section::lap	public	function	Stops then restarts an event.
Section::open	public	function	Creates or re-opens a child section.
Section::setId	public	function	Sets the session identifier.
Section::startEvent	public	function	Starts an event.
Section::stopEvent	public	function	Stops an event.
Section::__construct	public	function	Constructor.