public int sendAsync(final Message query, final ResolverListener listener) {
final int id = uniqueID(query);
if (workerthreads == null) workerthreads = new Vector();
WorkerThread t = null;
synchronized (workerthreads) {
if (workerthreads.size() > 0) {
t = (WorkerThread) workerthreads.firstElement();
workerthreads.removeElement(t);
}
}
if (t == null) {
t = new WorkerThread(this, workerthreads);
t.setDaemon(true);
t.start();
}
synchronized (t) {
t.assign(query, id, listener);
t.notify();
}
return id;
}
