| 
            system_test_lock_acquire           | 
                  
            function           | 
                  
            drupal/core/modules/system/tests/modules/system_test/system_test.module           | 
                  
            Try to acquire a named lock and report the outcome.           | 
              
          
                  | 
            NullLockBackend::acquire           | 
                  
            function           | 
                  
            drupal/core/lib/Drupal/Core/Lock/NullLockBackend.php           | 
                  
            Implements Drupal\Core\Lock\LockBackedInterface::acquire().           | 
              
          
                  | 
            node_access_acquire_grants           | 
                  
            function           | 
                  
            drupal/core/modules/node/node.module           | 
                  
            Gets the list of node access grants and writes them to the database.           | 
              
          
                  | 
            DatabaseLockBackend::acquire           | 
                  
            function           | 
                  
            drupal/core/lib/Drupal/Core/Lock/DatabaseLockBackend.php           | 
                  
            Implements Drupal\Core\Lock\LockBackedInterface::acquire().           | 
              
          
                  | 
            LockBackendInterface::acquire           | 
                  
            function           | 
                  
            drupal/core/lib/Drupal/Core/Lock/LockBackendInterface.php           | 
                  
            Acquires a lock.           | 
              
          
                  | 
            LockFunctionalTest::testLockAcquire           | 
                  
            function           | 
                  
            drupal/core/modules/system/lib/Drupal/system/Tests/Lock/LockFunctionalTest.php           | 
                  
            Confirms that we can acquire and release locks in two parallel requests.           |