Method handler_work

include/boost/asio/detail/handler_work.hpp:419–424

      IoExecutor> base2_type;

  handler_work(Handler& handler, const IoExecutor& io_ex) noexcept
    : base1_type(0, 0, io_ex),
      base2_type(base1_type::owns_work(),
          boost::asio::get_associated_executor(handler, io_ex), io_ex)
  {
  }

  template <typename Function>
  void complete(Function& function, Handler& handler)