void Thread::initialize_thread_local_storage() {

      // Note: Make sure this method only calls
      // non-blocking operations. Otherwise, it might not work
      // with the thread-startup/safepoint interaction.

      // During Java thread startup, safepoint code should allow this
      // method to complete because it may need to allocate memory to
      // store information for the new thread.

  {- -------------------------------------------
  (1) ThreadLocalStorage::set_thread() で
      現在実行中のネイティブスレッドの thread local storage に 
      この Thread オブジェクトを登録する.
      ---------------------------------------- -}

      // initialize structure dependent on thread local storage
      ThreadLocalStorage::set_thread(this);

  {- -------------------------------------------
  (1) 各プラットフォーム依存の初期化処理を行う.
      ---------------------------------------- -}

      // set up any platform-specific state.
      os::initialize_thread();

    }