1 /* 2 * Copyright (c) 1998, 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 Socket.setSoTimeout(T) can cause incorrect delay of T 27 * under green threads 28 * @requires (os.family == "linux") 29 * @library .. /test/lib 30 * @build RsocketTest 31 * @run main/othervm -Djava.net.preferIPv4Stack=true SoTimeout 32 */ 33 34 /* 35 * This program depends a bit on the particular behaviour of the green 36 * threads scheduler to produce the problem, but given that the underlying 37 * bug a green threads bug, I think that's OK. 38 */ 39 40 import java.net.*; 41 import jdk.net.Sockets; 42 43 public class SoTimeout implements Runnable { 44 static ServerSocket serverSocket; 45 static long timeWritten; 46 static InetAddress addr; 47 static int port; 48 49 public static void main(String[] args) throws Exception { 50 if (!RsocketTest.isRsocketAvailable()) 51 return; 52 53 addr = InetAddress.getLocalHost(); 54 55 serverSocket = Sockets.openRdmaServerSocket(); 56 addr = InetAddress.getLocalHost(); 57 serverSocket.bind(new InetSocketAddress(addr, 0)); 58 59 port = serverSocket.getLocalPort(); 60 61 byte[] b = new byte[12]; 62 Thread t = new Thread(new SoTimeout()); 63 t.start(); 64 65 Socket s = serverSocket.accept(); 66 serverSocket.close(); 67 68 // set a 5 second timeout on the socket 69 s.setSoTimeout(5000); 70 71 s.getInputStream().read(b, 0, b.length); 72 s.close(); 73 74 long waited = System.currentTimeMillis() - timeWritten; 75 76 // this sequence should complete fairly quickly and if it 77 // takes something resembling the the SoTimeout value then 78 // we are probably incorrectly blocking and not waking up 79 if (waited > 2000) { 80 throw new Exception("shouldn't take " + waited + " to complete"); 81 } 82 } 83 84 public void run() { 85 try { 86 byte[] b = new byte[12]; 87 Socket s = Sockets.openRdmaSocket(); 88 s.connect(new InetSocketAddress(addr, port)); 89 90 Thread.yield(); 91 timeWritten = System.currentTimeMillis(); 92 s.getOutputStream().write(b, 0, 12); 93 s.close(); 94 } catch (Exception e) { 95 e.printStackTrace(); 96 throw new RuntimeException("Test Failed"); 97 } 98 } 99 100 }