1 /*
   2  * Copyright (c) 2019 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 java.io.IOException;
  26 import java.net.InetAddress;
  27 import java.net.InetSocketAddress;
  28 import java.net.StandardProtocolFamily;
  29 import java.net.UnixDomainSocketAddress;
  30 import java.nio.channels.ClosedChannelException;
  31 import java.nio.channels.ServerSocketChannel;
  32 import java.nio.channels.SocketChannel;
  33 import java.nio.file.*;
  34 import java.util.concurrent.TimeUnit;
  35 import java.util.concurrent.atomic.AtomicInteger;
  36 
  37 import org.openjdk.jmh.annotations.*;
  38 import org.openjdk.jmh.runner.Runner;
  39 import org.openjdk.jmh.runner.RunnerException;
  40 import org.openjdk.jmh.runner.options.Options;
  41 import org.openjdk.jmh.runner.options.OptionsBuilder;
  42 
  43 /**
  44  * Measures connection setup times
  45  */
  46 @BenchmarkMode(Mode.SingleShotTime)
  47 @OutputTimeUnit(TimeUnit.MILLISECONDS)
  48 @State(Scope.Thread)
  49 public class SocketChannelConnectionSetup {
  50 
  51     private ServerSocketChannel ssc;
  52     private SocketChannel s1, s2;
  53 
  54     private static volatile String tempDir;
  55     private static final AtomicInteger count = new AtomicInteger(0);
  56     private volatile Path socket;
  57 
  58     @Param({"inet", "unix"})
  59     private volatile String family;
  60 
  61     static {
  62         try {
  63             Path p = Files.createTempDirectory("readWriteTest");
  64             tempDir = p.toString();
  65         } catch (IOException e) {
  66             tempDir = null;
  67         }
  68     }
  69 
  70     private ServerSocketChannel getServerSocketChannel() throws IOException {
  71         if (family.equals("inet"))
  72             return getInetServerSocketChannel();
  73         else if (family.equals("unix"))
  74             return getUnixServerSocketChannel();
  75         throw new InternalError();
  76     }
  77 
  78 
  79     private ServerSocketChannel getInetServerSocketChannel() throws IOException {
  80         InetAddress iaddr = InetAddress.getLoopbackAddress();
  81         return ServerSocketChannel.open().bind(null);
  82     }
  83 
  84     private ServerSocketChannel getUnixServerSocketChannel() throws IOException {
  85         int next = count.incrementAndGet();
  86         socket = Paths.get(tempDir, Integer.toString(next));
  87         UnixDomainSocketAddress addr = UnixDomainSocketAddress.of(socket);
  88         return ServerSocketChannel.open(StandardProtocolFamily.UNIX).bind(addr);
  89     }
  90 
  91     @Setup(Level.Trial)
  92     public void beforeRun() throws IOException {
  93         ssc = getServerSocketChannel();
  94     }
  95 
  96     @TearDown(Level.Trial)
  97     public void afterRun() throws IOException, InterruptedException {
  98         ssc.close();
  99         if (family.equals("unix")) {
 100             Files.delete(socket);
 101             Files.delete(Path.of(tempDir));
 102         }
 103     }
 104 
 105     @Benchmark
 106     @Measurement(iterations = 5, batchSize=200)
 107     public void test() throws IOException {
 108         s1 = SocketChannel.open(ssc.getLocalAddress());
 109         s2 = ssc.accept();
 110         s1.close();
 111         s2.close();
 112     }
 113 
 114     public static void main(String[] args) throws RunnerException {
 115         Options opt = new OptionsBuilder()
 116                 .include(org.openjdk.bench.java.net.SocketChannelConnectionSetup.class.getSimpleName())
 117                 .warmupForks(1)
 118                 .forks(2)
 119                 .build();
 120 
 121         new Runner(opt).run();
 122 
 123         opt = new OptionsBuilder()
 124                 .include(org.openjdk.bench.java.net.SocketChannelConnectionSetup.class.getSimpleName())
 125                 .jvmArgsPrepend("-Djdk.net.useFastTcpLoopback=true")
 126                 .warmupForks(1)
 127                 .forks(2)
 128                 .build();
 129 
 130         new Runner(opt).run();
 131     }
 132 }