Method SendProgress_

nan.h:2366–2375

 private:
  void SendProgress_(const T *data, size_t count) {
    T *new_data = new T[count];
    std::copy(data, data + count, new_data);

    uv_mutex_lock(&async_lock);
    asyncdata_.push(std::pair<T*, size_t>(new_data, count));
    uv_mutex_unlock(&async_lock);

    uv_async_send(&this->async);
  }

  uv_mutex_t async_lock;
  std::queue<std::pair<T*, size_t> > asyncdata_;