Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Core\Lock;
Chris@0: 
Chris@0: /**
Chris@0:  * Defines a Null lock backend.
Chris@0:  *
Chris@0:  * This implementation won't actually lock anything and will always succeed on
Chris@0:  * lock attempts.
Chris@0:  *
Chris@0:  * @ingroup lock
Chris@0:  */
Chris@0: class NullLockBackend implements LockBackendInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * Current page lock token identifier.
Chris@0:    *
Chris@0:    * @var string
Chris@0:    */
Chris@0:   protected $lockId;
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function acquire($name, $timeout = 30.0) {
Chris@0:     return TRUE;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function lockMayBeAvailable($name) {
Chris@0:     return TRUE;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function wait($name, $delay = 30) {}
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function release($name) {}
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function releaseAll($lock_id = NULL) {}
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getLockId() {
Chris@0:     if (!isset($this->lockId)) {
Chris@0:       $this->lockId = uniqid(mt_rand(), TRUE);
Chris@0:     }
Chris@0:     return $this->lockId;
Chris@0:   }
Chris@0: 
Chris@0: }