class Concurrent::RubyThreadPoolExecutor::Worker

def create_worker(queue, pool, idletime)
  Thread.new(queue, pool, idletime) do |my_queue, my_pool, my_idletime|
    catch(:stop) do
      loop do
        case message = my_queue.pop
        when :stop
          my_pool.remove_busy_worker(self)
          throw :stop
        else
          task, args = message
          run_task my_pool, task, args
          my_pool.ready_worker(self, Concurrent.monotonic_time)
        end
      end
    end
  end
end