module FSSM::Backends
  class Polling
  def initialize(options={})
    @handlers  = []
    @latency   = options[:latency]   || 1
  end
  
  def add_path(path, preload=true)
    @handlers << FSSM::State.new(path, preload)
  end
  
  def run
    begin
      loop do
        start = Time.now.to_f
        @handlers.each {|handler| handler.refresh}
        nap_time = @latency - (Time.now.to_f - start)
        sleep nap_time if nap_time > 0
      end
    rescue Interrupt
    end
  end
end
end