Method TearDown

cpp/src/arrow/util/io_util_test.cc:310–316

  void FinishReading() { read_thread_.join(); }

  void TearDown() override {
    ASSERT_OK(self_pipe_->Shutdown());
    if (read_thread_.joinable()) {
      read_thread_.join();
    }
    instance_ = nullptr;
  }

  Status ReadStatus() {
    std::lock_guard<std::mutex> lock(mutex_);