| 
                  DB_ENV->lock_detect()
                 | 
                Perform deadlock detection | 
              
              
                | 
                  DB_ENV->lock_get()
                 | 
                Acquire a lock | 
              
              
                | 
                  DB_ENV->lock_id()
                 | 
                Acquire a locker ID | 
              
              
                | 
                  DB_ENV->lock_id_free()
                 | 
                Release a locker ID | 
              
              
                | 
                  DB_ENV->lock_put()
                 | 
                Release a lock | 
              
              
                | 
                  DB_ENV->lock_stat()
                 | 
                Return lock subsystem statistics | 
              
              
                | 
                  DB_ENV->lock_stat_print()
                 | 
                Print lock subsystem statistics | 
              
              
                | 
                  DB_ENV->lock_vec()
                 | 
                Acquire/release locks | 
              
              
                | 
                  DB_ENV->cdsgroup_begin()
                 | 
                Get a locker ID in Berkeley DB Concurrent Data Store | 
              
              
                | 
                  
                    Locking Subsystem Configuration
                  
                 | 
              
              
                | DB_ENV->set_timeout(), DB_ENV->get_timeout() | 
                Set/get lock and transaction timeout | 
              
              
                | DB_ENV->set_lk_conflicts(), DB_ENV->get_lk_conflicts() | 
                Set/get lock conflicts matrix | 
              
              
                | DB_ENV->set_lk_detect(), DB_ENV->get_lk_detect() | 
                Set/get automatic deadlock detection | 
              
              
                | DB_ENV->set_lk_max_lockers(), DB_ENV->get_lk_max_lockers() | 
                Set/get maximum number of lockers | 
              
              
                | DB_ENV->set_lk_max_locks(), DB_ENV->get_lk_max_locks() | 
                Set/get maximum number of locks | 
              
              
                | DB_ENV->set_lk_max_objects(), DB_ENV->get_lk_max_objects() | 
                Set/get maximum number of lock objects | 
              
              
                | DB_ENV->set_lk_partitions(), DB_ENV->get_lk_partitions() | 
                Set/get number of lock partitions | 
              
              
                | DB_ENV->set_lk_priority(), DB_ENV->get_lk_priority() | 
                Set/get a locker's deadlock priority | 
              
              
                | DB_ENV->set_lk_tablesize(), DB_ENV->get_lk_tablesize() | 
                Set/get size of the lock object hash table |