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