instanceOop instanceKlass::register_finalizer(instanceOop i, TRAPS) {

  {- -------------------------------------------
  (1) (トレース出力)
      ---------------------------------------- -}

      if (TraceFinalizerRegistration) {
        tty->print("Registered ");
        i->print_value_on(tty);
        tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i);
      }

  {- -------------------------------------------
  (1) (変数宣言など)
      ---------------------------------------- -}

      instanceHandle h_i(THREAD, i);
      // Pass the handle as argument, JavaCalls::call expects oop as jobjects
      JavaValue result(T_VOID);
      JavaCallArguments args(h_i);
      methodHandle mh (THREAD, Universe::finalizer_register_method());

  {- -------------------------------------------
  (1) JavaCalls::call() で java.lang.ref.Finalizer.register() メソッドを呼び出して
      新しい Finalizer オブジェクトを生成する.
      (See: java.lang.ref.Finalizer.register())
      ---------------------------------------- -}

      JavaCalls::call(&result, mh, &args, CHECK_NULL);
      return h_i();
    }