1 /*
   2  * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.openjdk.bench.java.net;
  24 
  25 import org.openjdk.jmh.annotations.Benchmark;
  26 import org.openjdk.jmh.annotations.BenchmarkMode;
  27 import org.openjdk.jmh.annotations.Mode;
  28 import org.openjdk.jmh.annotations.OutputTimeUnit;
  29 import org.openjdk.jmh.annotations.Param;
  30 import org.openjdk.jmh.annotations.Scope;
  31 import org.openjdk.jmh.annotations.Setup;
  32 import org.openjdk.jmh.annotations.State;
  33 import org.openjdk.jmh.annotations.TearDown;
  34 
  35 import java.io.IOException;
  36 import java.net.DatagramPacket;
  37 import java.net.DatagramSocket;
  38 import java.net.InetAddress;
  39 import java.net.SocketException;
  40 import java.net.UnknownHostException;
  41 import java.util.concurrent.TimeUnit;
  42 
  43 /**
  44  * DatagramSocket micros designed to stress UDP performance.
  45  */
  46 @BenchmarkMode(Mode.AverageTime)
  47 @OutputTimeUnit(TimeUnit.MICROSECONDS)
  48 @State(Scope.Thread)
  49 public class DatagramSocketTest {
  50 
  51     @Param({"1024", "2048", "4096", "8192", "16384", "32768"})
  52     int size;
  53 
  54     private DatagramSocket socket;
  55     private DatagramPacket packet;
  56 
  57     @Setup
  58     public void prepare() throws SocketException, UnknownHostException {
  59         socket = new DatagramSocket();
  60 
  61         byte[] buf = new byte[size];
  62         packet = new DatagramPacket(buf, buf.length, InetAddress.getByName("localhost"), 9877);
  63     }
  64 
  65     @TearDown
  66     public void cleanup() {
  67         socket.close();
  68     }
  69 
  70     @Benchmark
  71     public void testSend() throws IOException {
  72         socket.send(packet);
  73     }
  74 
  75 }