Function execute

3rd/asio-1.24.0/include/asio/thread_pool.hpp:609–613

   */
  template <typename Function>
  void execute(ASIO_MOVE_ARG(Function) f) const
  {
    this->do_execute(ASIO_MOVE_CAST(Function)(f),
        integral_constant<bool, (Bits & blocking_always) != 0>());
  }

public:
  /// Bulk execution function.