Method SendProgress_

nan.h:2247–2259

 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(&this->async_lock);
    T *old_data = asyncdata_;
    asyncdata_ = new_data;
    asyncsize_ = count;
    uv_async_send(&this->async);
    uv_mutex_unlock(&this->async_lock);

    delete[] old_data;
  }

  T *asyncdata_;
  size_t asyncsize_;