# File lib_ctrl/rucy/params.rb, line 312
    def messenger_threads=(new_threads)
      if (new_threads == 0) then
        raise "not allowed zero number of messenger threads: #{new_threads.inspect}"
      end
      if (new_threads < 0) then
        raise "not allowed negative number of messenger threads: #{new_threads.inspect}"
      end
      @params['messenger_threads'] = new_threads
    end