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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((string) mt_rand(), TRUE);
}
return $this->lockId;
}
}
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