public Reaper() 
{
      
        if (daemon)
            this.setDaemon(true);
        this.setName("TomcatReaper");
}

 public Reaper(String name) 
{
        if (daemon)
            this.setDaemon(true);
        this.setName(name);
}

 public int addCallback(ThreadPoolRunnable c,
    int interval) 
{
        synchronized (lock) {
            cbacks[count] = c;
            count++;
            return count - 1;
        }
}

 public long getDefaultIntervale() 
{
        return interval;
}

 public  void removeCallback(int idx) 
{
        synchronized (lock) {
            count--;
            cbacks[idx] = cbacks[count];
            cbacks[count] = null;
        }
}

 public  void run() 
{
        while (running) {
            if (!running)
                break;
            try {
                Thread.sleep(interval);
            } catch (InterruptedException ie) {
                // sometimes will happen
            }
            if (!running)
                break;
            for (int i = 0; i <  count; i++) {
                ThreadPoolRunnable callB = cbacks[i];
                // it may be null if a callback is removed.
                //  I think the code is correct
                if (callB != null) {
                    callB.runIt(tdata[i]);
                }
                if (!running)
                    break;
            }
        }
}

 public  void setDefaultInterval(long t) 
{
    // XXX Should be called 'interval' not defaultInterval
        interval = t;
}

 public  void startReaper() 
{
        running = true;
        this.start();
}

 public synchronized  void stopReaper() 
{
        running = false;
        if (log.isDebugEnabled())
            log.debug("Stop reaper ");
        this.interrupt(); // notify() doesn't stop sleep
}