# lock_id

`

###

    #include <db.h>

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

# Description

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

The lock_id function returns a non-zero error value on failure and 0 on success.

# Errors

The lock_id function may fail and return a non-zero error for errors specified for other Berkeley DB and C library or system functions. If a catastrophic error has occurred, the lock_id function may fail and return DB_RUNRECOVERY, in which case all subsequent Berkeley DB calls will fail in the same way.

# See Also

DB_ENV->set_lk_conflicts, DB_ENV->set_lk_detect, DB_ENV->set_lk_max, DB_ENV->set_lk_max_lockers, DB_ENV->set_lk_max_locks, DB_ENV->set_lk_max_objects, lock_detect, lock_get, lock_id, lock_put, lock_stat, and lock_vec.`

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