#include <db.h>

int
DB_ENV->mutex_get_align(DB_ENV *dbenv, u_int32_t *alignp);  

The DB_ENV->mutex_get_align() method returns the mutex alignment, in bytes.

The DB_ENV->mutex_get_align() method may be called at any time during the life of the application.

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