gistfile1.rb

require 'celluloid'
require 'net/http'

class MarkupPutter 
  include Celluloid

  def initialize(url)
    @url = url
  end

  def output(markup_future)
    puts "#{@url}"
    puts "#{markup_future.value}"
    puts "----------------------------"
  end
 
  def get_markup
    Net::HTTP.get(URI.parse(@url))
  end
 
end

websites = ["http://google.com/", "http://yahoo.com/", "http://rubysource.com/", "http://tumblr.com/"]

websites.each do |website|
  supervisor = MarkupPutter.supervise_as :mp, website
  mp = Celluloid::Actor[:mp] 

  markup_future = mp.future :get_markup
  mp.output markup_future
end