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- <?php
- namespace Drupal\Core\Lock;
- use Drupal\Core\Database\Connection;
- /**
- * Defines the persistent database lock backend. This backend is global for this
- * Drupal installation.
- *
- * @ingroup lock
- */
- class PersistentDatabaseLockBackend extends DatabaseLockBackend {
- /**
- * Constructs a new PersistentDatabaseLockBackend.
- *
- * @param \Drupal\Core\Database\Connection $database
- * The database connection.
- */
- public function __construct(Connection $database) {
- // Do not call the parent constructor to avoid registering a shutdown
- // function that releases all the locks at the end of a request.
- $this->database = $database;
- // Set the lockId to a fixed string to make the lock ID the same across
- // multiple requests. The lock ID is used as a page token to relate all the
- // locks set during a request to each other.
- // @see \Drupal\Core\Lock\LockBackendInterface::getLockId()
- $this->lockId = 'persistent';
- }
- }
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