1 /* 2 * Copyright (c) 2018, 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 24 /* @test 25 * @bug 8195160 26 * @summary Spurious NPE from RdmaSocket.getIn/OutputStream 27 * @requires (os.family == "linux") 28 * @library .. /test/lib 29 * @build RsocketTest 30 * @run main/othervm -Djava.net.preferIPv4Stack=true Streams 31 */ 32 33 import java.io.IOException; 34 import java.lang.reflect.Constructor; 35 import java.net.ServerSocket; 36 import java.net.Socket; 37 import java.net.InetAddress; 38 import java.net.InetSocketAddress; 39 import java.util.concurrent.Phaser; 40 import jdk.net.Sockets; 41 42 // Racey test, will not always fail, but if it does then there is a problem. 43 44 public class Streams { 45 static final int NUM_THREADS = 10; 46 static volatile boolean failed; 47 static ServerSocket ss; 48 static final Phaser startingGate = new Phaser(NUM_THREADS + 1); 49 static InetAddress ia; 50 51 public static void main(String[] args) throws Exception { 52 if (!RsocketTest.isRsocketAvailable()) 53 return; 54 55 InetAddress ia = InetAddress.getLocalHost(); 56 57 try { 58 ss = Sockets.openRdmaServerSocket(); 59 ss.bind(new InetSocketAddress(ia, 0)); 60 runTest(OutputStreamGetter.class); 61 runTest(InputStreamGetter.class); 62 } catch (Exception e) { 63 e.printStackTrace(); 64 failed = true; 65 } 66 67 if (failed) 68 throw new RuntimeException("Failed, check output"); 69 } 70 71 static void runTest(Class<? extends StreamGetter> klass) 72 throws Exception 73 { 74 final int port = ss.getLocalPort(); 75 Socket[] sockets = new Socket[NUM_THREADS]; 76 77 for (int i = 0; i < NUM_THREADS; i++) { 78 sockets[i] = Sockets.openRdmaSocket(); 79 final Socket cs = sockets[i]; 80 Thread t = new Thread() { 81 public void run() { 82 try { 83 cs.connect(new InetSocketAddress(InetAddress.getLocalHost(), port)); 84 } catch (Exception e) { 85 e.printStackTrace(); 86 failed = true; 87 } 88 } 89 }; 90 t.start(); 91 Socket socket = ss.accept(); 92 cs.close(); 93 } 94 95 Constructor<? extends StreamGetter> ctr = klass.getConstructor(Socket.class); 96 97 Thread[] threads = new Thread[NUM_THREADS]; 98 for (int i=0; i<NUM_THREADS; i++) 99 threads[i] = ctr.newInstance(sockets[i]); 100 for (int i=0; i<NUM_THREADS; i++) 101 threads[i].start(); 102 103 startingGate.arriveAndAwaitAdvance(); 104 for (int i=0; i<NUM_THREADS; i++) 105 sockets[i].close(); 106 107 for (int i=0; i<NUM_THREADS; i++) 108 threads[i].join(); 109 } 110 111 static abstract class StreamGetter extends Thread { 112 final Socket socket; 113 StreamGetter(Socket s) { socket = s; } 114 115 @Override 116 public void run() { 117 try { 118 startingGate.arriveAndAwaitAdvance(); 119 getStream(); 120 } catch (IOException x) { 121 // OK, socket may be closed 122 } catch (NullPointerException x) { 123 x.printStackTrace(); 124 failed = true; 125 } 126 } 127 128 abstract void getStream() throws IOException; 129 } 130 131 static class InputStreamGetter extends StreamGetter { 132 public InputStreamGetter(Socket s) { super(s); } 133 void getStream() throws IOException { 134 socket.getInputStream(); 135 } 136 } 137 138 static class OutputStreamGetter extends StreamGetter { 139 public OutputStreamGetter(Socket s) { super(s); } 140 void getStream() throws IOException { 141 socket.getOutputStream(); 142 } 143 } 144 }