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DatabaseLockBackend

Defines the database lock backend. This is the default backend in Drupal.

Hierarchy

Related topics

Locking mechanisms
Functions to coordinate long-running operations across requests.

File

core/lib/Drupal/Core/Lock/DatabaseLockBackend.php, line 14

Namespace

Drupal\Core\Lock

Members

Name Modifiers Type Description
DatabaseLockBackend::$database protected property The database connection.
DatabaseLockBackend::acquire public function Acquires a lock. Overrides LockBackendInterface::acquire
DatabaseLockBackend::catchException protected function Act on an exception when semaphore might be stale.
DatabaseLockBackend::ensureTableExists protected function Check if the semaphore table exists and create it if not.
DatabaseLockBackend::lockMayBeAvailable public function Checks if a lock is available for acquiring. Overrides LockBackendInterface::lockMayBeAvailable
DatabaseLockBackend::release public function Releases the given lock. Overrides LockBackendInterface::release
DatabaseLockBackend::releaseAll public function Releases all locks for the given lock token identifier. Overrides LockBackendInterface::releaseAll
DatabaseLockBackend::schemaDefinition public function Defines the schema for the semaphore table.
DatabaseLockBackend::TABLE_NAME constant The database table name.
DatabaseLockBackend::__construct public function Constructs a new DatabaseLockBackend.
LockBackendAbstract::$lockId protected property Current page lock token identifier.
LockBackendAbstract::$locks protected property Existing locks for this page.
LockBackendAbstract::getLockId public function Gets the unique page token for locks. Overrides LockBackendInterface::getLockId
LockBackendAbstract::wait public function Waits a short amount of time before a second lock acquire attempt. Overrides LockBackendInterface::wait
doc_Drupal
doc_Drupal
2016-10-29 08:59:46
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