lock_protocol::status acquire(int &, lock_protocol::lockid_t, const callback_t & id, lock_protocol::xid_t);
lock_protocol::status release(int &, lock_protocol::lockid_t, const callback_t & id, lock_protocol::xid_t);
lock_protocol::status stat(int &, lock_protocol::lockid_t, const callback_t & id);
lock_protocol::status acquire(int &, lock_protocol::lockid_t, const callback_t & id, lock_protocol::xid_t);
lock_protocol::status release(int &, lock_protocol::lockid_t, const callback_t & id, lock_protocol::xid_t);
lock_protocol::status stat(int &, lock_protocol::lockid_t, const callback_t & id);