class Listen::Adapter::Polling


file IO than the other implementations.
uses the most CPU processing power and has higher
has no dependencies. This is the adapter that
Polling Adapter that works cross-platform and

def _configure(_, &callback) 

def _configure(_, &callback)
  @polling_callbacks ||= []
  @polling_callbacks << callback
end

def _process_event(dir, _) 

def _process_event(dir, _)
  _queue_change(:dir, dir, '.', recursive: true)
end

def _run 

def _run
  loop do
    start = MonotonicTime.now
    @polling_callbacks.each do |callback|
      callback.call(nil)
      if (nap_time = options.latency - (MonotonicTime.now - start)) > 0
        # TODO: warn if nap_time is negative (polling too slow)
        sleep(nap_time)
      end
    end
  end
end