{- -------------------------------------------
  (1) MarkSweep::adjust_pointer() を呼び出すだけ.
      ---------------------------------------- -}

    void MarkSweep::AdjustPointerClosure::do_oop(oop* p)       { adjust_pointer(p, _is_root); }
    void MarkSweep::AdjustPointerClosure::do_oop(narrowOop* p) { adjust_pointer(p, _is_root); }