#include <db.h>

int
DB_ENV->lock_id(DB_ENV *env, u_int32_t *idp);

The DB_ENV->lock_id method copies a locker ID, which is guaranteed to be unique in the specified lock table, into the memory location to which idp refers.

The DB_ENV->lock_id_free method should be called to return the locker ID to the Berkeley DB library when it is no longer needed.

The DB_ENV->lock_id method returns a non-zero error value on failure and 0 on success.

• The idp parameter references memory into which the allocated locker ID is copied.