name : SharedLockInterface.php <?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Lock; use Symfony\Component\Lock\Exception\LockAcquiringException; use Symfony\Component\Lock\Exception\LockConflictedException; /** * SharedLockInterface defines an interface to manipulate the status of a shared lock. * * @author Jérémy Derussé <jeremy@derusse.com> */ interface SharedLockInterface extends LockInterface { /** * Acquires the lock for reading. If the lock is acquired by someone else in write mode, the parameter `blocking` * determines whether or not the call should block until the release of the lock. * * @throws LockConflictedException If the lock is acquired by someone else in blocking mode * @throws LockAcquiringException If the lock cannot be acquired */ public function acquireRead(bool $blocking = false): bool; }