prelude: |
  def make_link(previous)
    Fiber.new do
      while message = previous.resume
        Fiber.yield(message)
      end
    end
  end

  def make_chain(length = 1000, &block)
    chain = Fiber.new(&block)

    (length - 1).times do
      chain = make_link(chain)
    end

    return chain
  end

  message = "Hello World!"

  chain = make_chain do
    while true
      Fiber.yield(message)
    end
  end
benchmark:
  make_chain: |
    make_chain(100) do
      while true
        Fiber.yield(message)
      end
    end
  resume_chain: |
    chain.resume
loop_count: 5000