// r may return false to cancel timer
static TimerTask smartTimerTask(final O r, final java.util.Timer timer, final long delay) {
  ret new TimerTask {
    long lastRun;
    
    public void run() {
      if (!licensed())
        timer.cancel();
      else {
        lastRun = fixTimestamp(lastRun);
        long now = now();
        if (now >= lastRun + delay*0.9) {
          lastRun = now;
          if (eq(false, pcallF(r)))
            timer.cancel();
        }
      }
    }
  };
}