require 'fastthread'
class AsyncFu
  def initialize(obj = nil)
    @class = obj || self
    at_exit{
      unless @exit
        until Thread.list.size == 1 do Thread.pass end
      end
    }
  end
  def method_missing(name, *args)
    if @class.respond_to?(name)
      Thread.new{
        @class.send name, *args
      }
    else
      @class.send name, *args
    end
  end
  def exit
    @exit = true
  end
end