How to use

remove

method

in

org.ice4j.util.QueueStatistics

/**
 * Removes and returns the packet ({@code T}) at the head of this queue, if
 * the queue is non-empty. If the queue is closed or empty, returns null
 * without blocking.
 * @return the packet at the head of this queue, or null if the queue is
 * empty.
 */
public T poll()
{
  if (closed)
    return null;
  if (asyncQueueHandler != null)
  {
    // If the queue was configured with a handler, it is running its
    // own reading thread, and reading from it via this interface would
    // not provide consistent results.
    throw new IllegalStateException(
      "Trying to read from a queue with a configured handler.");
  }
  synchronized (queue)
  {
    T pkt = queue.poll();
    if (pkt != null && queueStatistics != null)
    {
      queueStatistics.remove(System.currentTimeMillis());
    }
    return pkt;
  }
}

queueStatistics.remove(System.currentTimeMillis());

/**
 * Adds pkt to this socket. If the queue is full, drops a packet. Does
 * not block.
 */
public void addBuffer(Buffer buf)
{
  synchronized (queue)
  {
    // Drop the first rather than the current packet, so that
    // receivers can notice the loss earlier.
    if (queue.size() == QUEUE_SIZE)
    {
      logger.info("Dropping a packet because the queue is full.");
      if (queueStatistics != null)
      {
        queueStatistics.remove(System.currentTimeMillis());
      }
      queue.poll();
    }
    queue.offer(buf);
    if (queueStatistics != null)
    {
      queueStatistics.add(System.currentTimeMillis());
    }
    queue.notify();
  }
}

if (queueStatistics != null)
  queueStatistics.remove(System.currentTimeMillis());

queueStatistics.remove(System.currentTimeMillis());

if (writeQStats != null)
  writeQStats.remove(System.currentTimeMillis());

if (readQStats != null)
  readQStats.remove(System.currentTimeMillis());

if (writeQStats != null)
  writeQStats.remove(System.currentTimeMillis());

queueStats.remove(System.currentTimeMillis());

queueStats.remove(now);

if (readQStats != null)
  readQStats.remove(now);