org.jgroups.tests.NioClientTest Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
package org.jgroups.tests;
import org.jgroups.util.Util;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.SocketChannel;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.LongAdder;
/**
* NIO based client for measuring heap-based vs direct byte buffers. Use {@link NioServerPerfTest} as server
* @author Bela Ban
* @since 3.6.4
*/
public class NioClientTest {
protected volatile boolean running=true;
protected final LongAdder total_bytes_sent=new LongAdder();
protected final LongAdder total_msgs=new LongAdder();
protected Sender[] senders;
protected static ByteBuffer create(int size, boolean direct) {
return direct? ByteBuffer.allocateDirect(size) : ByteBuffer.allocate(size);
}
protected void start(InetAddress host, boolean direct, int num_threads) throws Exception {
boolean looping=true;
while(looping) {
int c=Util.keyPress("[1] send [x] exit");
switch(c) {
case '1':
sendMessages(host, direct, num_threads);
break;
case 'x':
case -1:
looping=false;
break;
}
}
}
protected void sendMessages(InetAddress host, boolean direct, int num_threads) throws Exception {
total_msgs.reset();
total_bytes_sent.reset();
senders=new Sender[num_threads];
final CountDownLatch latch=new CountDownLatch(1);
for(int i=0; i < senders.length; i++)
senders[i]=new Sender(host, direct, latch);
for(Sender sender: senders)
sender.start();
latch.countDown();
for(Sender sender: senders)
sender.join();
}
protected class Sender extends Thread {
protected SocketChannel ch;
protected final CountDownLatch latch;
protected final InetAddress host;
protected final boolean direct;
protected final ByteBuffer buf;
public Sender(InetAddress host, boolean direct, CountDownLatch latch) {
this.latch=latch;
this.host=host;
this.direct=direct;
buf=create(NioServerPerfTest.SIZE, direct);
}
public void run() {
try {
ch=SocketChannel.open();
ch.configureBlocking(true); // we want blocking behavior
ch.connect(new InetSocketAddress(host, 7500));
latch.await();
}
catch(Exception e) {
e.printStackTrace();
}
for(;;) {
total_bytes_sent.add(NioServerPerfTest.SIZE);
if(total_bytes_sent.sum() > NioServerPerfTest.BYTES_TO_SEND)
break;
buf.rewind();
try {
ch.write(buf);
total_msgs.increment();
}
catch(IOException e) {
e.printStackTrace();
}
}
Util.close(ch);
}
}
public static void main(String[] args) throws Exception {
String host="localhost";
boolean direct=false;
int num_threads=5;
for(int i=0; i < args.length; i++) {
if(args[i].equals("-host")) {
host=args[++i];
continue;
}
if(args[i].equals("-direct")) {
direct=Boolean.parseBoolean(args[++i]);
continue;
}
if(args[i].equals("-num_threads")) {
num_threads=Integer.parseInt(args[++i]);
continue;
}
System.out.println("NioClientTest [-host host] [-direct true|false] [-num_threads num]");
return;
}
new NioClientTest().start(InetAddress.getByName(host), direct, num_threads);
}
}