JvmtiAgentThread::JvmtiAgentThread(JvmtiEnv* env, jvmtiStartFunction start_fn, const void *start_arg)

  {- -------------------------------------------
  (1) JavaThread::JavaThread() を呼び出す
      ---------------------------------------- -}

        : JavaThread(start_function_wrapper) {

  {- -------------------------------------------
  (1) フィールドの初期化
      ---------------------------------------- -}

        _env = env;
        _start_fn = start_fn;
        _start_arg = start_arg;
    }