Method AddCallback

cpp/src/arrow/util/future.h:488–494

  /// cyclic reference to itself through the callback.
  template <typename OnComplete, typename Callback = WrapOnComplete<OnComplete>>
  void AddCallback(OnComplete on_complete,
                   CallbackOptions opts = CallbackOptions::Defaults()) const {
    // We know impl_ will not be dangling when invoking callbacks because at least one
    // thread will be waiting for MarkFinished to return. Thus it's safe to keep a
    // weak reference to impl_ here
    impl_->AddCallback(Callback{std::move(on_complete)}, opts);
  }

  /// \brief Overload of AddCallback that will return false instead of running
  /// synchronously