gistfile1.java

public void start() throws Exception {
		List<EventHandlerTask> h = new LinkedList<IOLoop.EventHandlerTask>();
		while (true) {

			Iterator<EventHandlerTask> iterTask = h.iterator();
			System.out.println(h.size());
			while (iterTask.hasNext()) {
				pool.execute(iterTask.next());
				iterTask.remove();
			}

			Iterator<Object[]> iterAddedHandlers = handlers.iterator();
			boolean handleAdded = false;

			Iterator<SelectionKey> iter = selector.selectedKeys().iterator();

			while (iter.hasNext()) {
				SelectionKey key = iter.next();
				iter.remove();
				if (key.isValid() && !key.isAcceptable()) {
					EventHandlerTask task = new EventHandlerTask(
							(EventHandler) key.attachment(), key.readyOps(),
							key.channel());
					this.removeHandler(key);
					h.add(task);
				} else if (key.isValid()) {
					// events other than accept is handled in another thred.
					((EventHandler) key.attachment()).handleEvents(
							key.readyOps(), key.channel());
				}

			}

			// Thread.sleep(IOLoop.SELECT_TIMEOUT);
			if (h.isEmpty())
			 selector.select(SELECT_TIMEOUT);
			 else
			selector.selectNow();

			// if (selector.selectNow() == 0)
			// continue;

		}
	}