1 /* 2 * Copyright (c) 2016, 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 8050499 26 * @summary Attempt to provoke error 316 on OS X in NativeSignal.signal() 27 */ 28 29 import java.io.*; 30 import java.net.*; 31 import java.nio.ByteBuffer; 32 import java.nio.channels.DatagramChannel; 33 34 public class StressNativeSignal { 35 private UDPThread udpThread; 36 private ServerSocketThread serverSocketThread; 37 StressNativeSignal()38 StressNativeSignal() { 39 try { 40 serverSocketThread = new ServerSocketThread(); 41 serverSocketThread.start(); 42 43 udpThread = new UDPThread(); 44 udpThread.start(); 45 } catch (Exception z) { 46 z.printStackTrace(); 47 } 48 } 49 main(String[] args)50 public static void main(String[] args) throws Throwable { 51 StressNativeSignal test = new StressNativeSignal(); 52 try { 53 Thread.sleep(3000); 54 } catch (Exception z) { 55 z.printStackTrace(System.err); 56 } 57 58 test.shutdown(); 59 } 60 shutdown()61 public void shutdown() { 62 udpThread.terminate(); 63 try { 64 udpThread.join(); 65 } catch (Exception z) { 66 z.printStackTrace(System.err); 67 } 68 69 serverSocketThread.terminate(); 70 try { 71 serverSocketThread.join(); 72 } catch (Exception z) { 73 z.printStackTrace(System.err); 74 } 75 } 76 77 public class ServerSocketThread extends Thread { 78 private volatile boolean shouldTerminate; 79 private ServerSocket socket; 80 run()81 public void run() { 82 try { 83 socket = new ServerSocket(1122); 84 Socket client = socket.accept(); 85 BufferedReader reader = new BufferedReader(new InputStreamReader(client.getInputStream())); 86 shouldTerminate = false; 87 while (!shouldTerminate) { 88 String msg = reader.readLine(); 89 } 90 } catch (Exception z) { 91 if (!shouldTerminate) { 92 z.printStackTrace(System.err); 93 } 94 } 95 } 96 terminate()97 public void terminate() { 98 shouldTerminate = true; 99 try { 100 socket.close(); 101 } catch (Exception z) { 102 z.printStackTrace(System.err); 103 // ignore 104 } 105 } 106 } 107 108 public class UDPThread extends Thread { 109 private DatagramChannel channel; 110 private volatile boolean shouldTerminate; 111 112 @Override run()113 public void run() { 114 try { 115 channel = DatagramChannel.open(); 116 channel.setOption(StandardSocketOptions.SO_RCVBUF, 6553600); 117 channel.bind(new InetSocketAddress(19870)); 118 } catch (IOException z) { 119 z.printStackTrace(System.err); 120 } 121 122 ByteBuffer buf = ByteBuffer.allocate(6553600); 123 shouldTerminate = false; 124 while (!shouldTerminate) { 125 try { 126 buf.rewind(); 127 channel.receive(buf); 128 } catch (IOException z) { 129 if (!shouldTerminate) { 130 z.printStackTrace(System.err); 131 } 132 } 133 } 134 } 135 terminate()136 public void terminate() { 137 shouldTerminate = true; 138 try { 139 channel.close(); 140 } catch (Exception z) { 141 z.printStackTrace(System.err); 142 // ignore 143 } 144 } 145 } 146 147 } 148