void os::pd_start_thread(Thread* thread) {

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

      OSThread * osthread = thread->osthread();

  {- -------------------------------------------
  (1) (assert)
      ---------------------------------------- -}

      assert(osthread->get_state() != INITIALIZED, "just checking");

  {- -------------------------------------------
  (1) 生成したスレッドの startThread_lock に対して Monitor::notify() を呼び出し, 初期化が完了したことを伝える.
      (See: java_start())
      ---------------------------------------- -}

      Monitor* sync_with_child = osthread->startThread_lock();
      MutexLockerEx ml(sync_with_child, Mutex::_no_safepoint_check_flag);
      sync_with_child->notify();
    }