// Updates the references in the object to their new values.

ParMarkBitMapClosure::IterationStatus
UpdateOnlyClosure::do_addr(HeapWord* addr, size_t words) {

  {- -------------------------------------------
  (1) UpdateOnlyClosure::do_addr() を呼び出すだけ.
      ---------------------------------------- -}

      do_addr(addr);
      return ParMarkBitMap::incomplete;
    }