Method Shutdown

cpp/src/arrow/util/thread_pool.cc:606–624

}

Status ThreadPool::Shutdown(bool wait) {
  std::unique_lock<std::mutex> lock(state_->mutex_);

  if (state_->please_shutdown_) {
    return Status::Invalid("Shutdown() already called");
  }
  state_->please_shutdown_ = true;
  state_->quick_shutdown_ = !wait;
  state_->cv_.notify_all();
  state_->cv_shutdown_.wait(lock, [this] { return state_->workers_.empty(); });
  if (!state_->quick_shutdown_) {
    DCHECK_EQ(state_->pending_tasks_.size(), 0);
  } else {
    std::priority_queue<QueuedTask> empty;
    std::swap(state_->pending_tasks_, empty);
  }
  CollectFinishedWorkersUnlocked();
  return Status::OK();
}

void ThreadPool::CollectFinishedWorkersUnlocked() {
  for (auto& thread : state_->finished_workers_) {