1 /* 2 * Copyright (c) 2003, 2015, 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 /** 25 * @test 26 * @bug 4893530 27 * @summary If JDI is initially started from a thread group that is subsequently 28 * destroyed this should not impact subsequent thread creation by 29 * the virtual machine manager. 30 * 31 * @modules jdk.jdi 32 * @run build TestScaffold VMConnection TargetListener TargetAdapter 33 * @run compile ThreadGroupTest.java 34 * @run driver ThreadGroupTest 35 */ 36 import com.sun.jdi.*; 37 import com.sun.jdi.connect.*; 38 import com.sun.jdi.event.*; 39 import com.sun.jdi.request.*; 40 41 import java.util.*; 42 43 /********** target program **********/ 44 45 class ThreadGroupTarg { 46 public static void main(String[] args){ 47 System.out.println("Howdy!"); 48 System.out.println("Goodbye from ThreadGroupTarg!"); 49 } 50 } 51 52 /********** test program **********/ 53 54 public class ThreadGroupTest extends TestScaffold { 55 ReferenceType targetClass; 56 ThreadReference mainThread; 57 58 // Helper thread to fetch VirtualMachineManager 59 static class Fetcher implements Runnable { 60 public void run() { 61 Bootstrap.virtualMachineManager(); 62 } 63 } 64 65 ThreadGroupTest (String args[]) { 66 super(args); 67 } 68 69 public static void main(String[] args) throws Exception { 70 // create a random thread group, and run a thread in that group to 71 // fetch the VirtualMachineManager 72 ThreadGroup tg = new ThreadGroup("Gus"); 73 Fetcher fetcher = new Fetcher(); 74 Thread thr = new Thread(tg, fetcher); 75 thr.start(); 76 try { 77 thr.join(); 78 } catch (InterruptedException x) { } 79 // now destroy the thread group 80 tg.destroy(); 81 82 // run the test 83 new ThreadGroupTest(args).startTests(); 84 } 85 86 /********** test core **********/ 87 88 protected void runTests() throws Exception { 89 90 // run the target until it completes 91 startToMain("ThreadGroupTarg"); 92 listenUntilVMDisconnect(); 93 94 /* 95 * deal with results of test 96 * if anything has called failure("foo") testFailed will be true 97 */ 98 if (!testFailed) { 99 println("ThreadGroupTest: passed"); 100 } else { 101 throw new Exception("ThreadGroupTest: failed"); 102 } 103 } 104 }