public List<ServerMessage> takeQueue() {
List<ServerMessage> copy = Collections.emptyList();
synchronized (getLock()) {
// Always call listeners, even if the queue is
// empty since they may add messages to the queue.
if (!_listeners.isEmpty()) {
for (ServerSessionListener listener : _listeners) {
if (listener instanceof DeQueueListener)
notifyDeQueue((DeQueueListener) listener, this, _queue);
}
}
int size = _queue.size();
if (size > 0) {
copy = new ArrayList<>(size);
copy.addAll(_queue);
}
clearQueue();
}
return copy;
}
