1 /* 2 * Copyright (c) 2003, 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 4531526 26 * @summary Test that more than one debuggee cannot bind to same port 27 * at the same time. 28 * @library /test/lib 29 * 30 * @build ExclusiveBind HelloWorld 31 * @run driver ExclusiveBind 32 */ 33 34 import jdk.test.lib.process.ProcessTools; 35 import lib.jdb.Debuggee; 36 37 public class ExclusiveBind { 38 /* 39 * - Launch a debuggee with server=y,suspend=y 40 * - Parse listening port 41 * - Launch a second debuggee in server=y,suspend=n with the parsed port 42 * - Second debuggee should fail with an error (address already in use) 43 * - For clean-up we attach to the first debuggee and resume it. 44 */ 45 public static void main(String args[]) throws Exception { 46 // launch the first debuggee 47 try (Debuggee process1 = Debuggee.launcher("HelloWorld").launch("process1")) { 48 // launch a second debuggee with the same address 49 ProcessBuilder process2 = Debuggee.launcher("HelloWorld") 50 .setSuspended(false) 51 .setAddress(process1.getAddress()) 52 .prepare(); 53 54 // get exit status from second debuggee 55 int exitCode = ProcessTools.startProcess("process2", process2).waitFor(); 56 57 // if the second debuggee ran to completion then we've got a problem 58 if (exitCode == 0) { 59 throw new RuntimeException("Test failed - second debuggee didn't fail to bind"); 60 } else { 61 System.out.println("Test passed - second debuggee correctly failed to bind"); 62 } 63 } 64 } 65 }