Method join

example/cpp11/executors/fork_join.cpp:192–198

Block until all work associated with the executor is complete. While it is waiting, the thread may be borrowed to execute functions from the queue.

  // Block until all work associated with the executor is complete. While it is
  // waiting, the thread may be borrowed to execute functions from the queue.
  void join() const
  {
    std::unique_lock<std::mutex> lock(context_.mutex_);
    while (*work_count_ > 0)
      if (!context_.execute_next(lock))
        context_.condition_.wait(lock);
  }

private:
  template <class Func>