HighCPUReproduce.java

package org.jboss.netty.highcpu;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetSocketAddress;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import org.jboss.netty.bootstrap.ServerBootstrap;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelFactory;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelPipelineFactory;
import org.jboss.netty.channel.Channels;
import org.jboss.netty.channel.SimpleChannelHandler;
import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;

public class HighCPUReproduce {


	@SuppressWarnings("static-access")
		public static void main(String[] args) throws InterruptedException {
			
			ExecutorService nettyPool = Executors.newCachedThreadPool();
			ChannelFactory factory = new NioServerSocketChannelFactory(nettyPool, nettyPool, 1);
			ServerBootstrap bootstrap = new ServerBootstrap(factory);
			bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
	
				public ChannelPipeline getPipeline() throws Exception {
					return Channels.pipeline(new SimpleChannelHandler());
				}});
			bootstrap.setOption("keepAlive", Boolean.TRUE);
			Channel serverChanel = bootstrap.bind(new InetSocketAddress(0));
			
			serverChanel.close();
			nettyPool.shutdownNow();
			
			Thread.currentThread().sleep(Long.MAX_VALUE);
		}

}