#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.