Method CheckEnded

cpp/src/arrow/acero/asof_join_node.cc:1057–1063

  }

  bool CheckEnded() {
    if (state_.at(0)->Finished()) {
      EndFromProcessThread();
      return false;
    }
    return true;
  }

  bool Process() {
    std::lock_guard<std::mutex> guard(gate_);