public void lockssRun() { setPriority(PRIORITY_PARAM_SIZE_CALC, PRIORITY_DEFAULT_SIZE_CALC); startWDog(WDOG_PARAM_SIZE_CALC, WDOG_DEFAULT_SIZE_CALC); triggerWDogOnExit(true); nowRunning(); while (goOn) { try { pokeWDog(); if (sizeCalcQueue.isEmpty()) { Deadline timeout = Deadline.in(Constants.HOUR); sizeCalcSem.take(timeout); } RepositoryNode node; synchronized (sizeCalcQueue) { node = (RepositoryNode) CollectionUtil.getAnElement(sizeCalcQueue); } if (node != null) { long start = TimeBase.nowMs(); log.debug2("CalcSize start: " + node); long dur = 0; try { doSizeCalc(node); dur = TimeBase.nowMs() - start; log.debug2("CalcSize finish (" + StringUtil.timeIntervalToString(dur) + "): " + node); } catch (RuntimeException e) { log.warning("doSizeCalc: " + node, e); } synchronized (sizeCalcQueue) { sizeCalcQueue.remove(node); } pokeWDog(); long sleep = sleepTimeToAchieveLoad(dur, sizeCalcMaxLoad); Deadline.in(sleep).sleep(); } } catch (InterruptedException e) { // just wakeup and check for exit } } if (!goOn) { triggerWDogOnExit(false); } }