Interruptible sleep in Ruby

gistfile1.rb

module InterruptibleSleep
  def interruptible_sleep(seconds)
    @_sleep_check, @_sleep_interrupt = IO.pipe
    IO.select([@_sleep_check], nil, nil, seconds)
  end

  def interrupt_sleep
    @_sleep_interrupt.close if @_sleep_interrupt
  end
end

class Test
  include InterruptibleSleep

  def start
    puts "start"
    interruptible_sleep 10
    puts "sleep interrupted!"
  end

  def stop
    puts "stop"
    interrupt_sleep
  end
end

test = Test.new
Signal.trap('SIGINT') { test.stop }
test.start