1 /* 2 * Copyright (c) 2003, 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 * @run build TestScaffold VMConnection TargetListener TargetAdapter 32 * @run compile ThreadGroupTest.java 33 * @run driver ThreadGroupTest 34 */ 35 import com.sun.jdi.*; 36 import com.sun.jdi.connect.*; 37 import com.sun.jdi.event.*; 38 import com.sun.jdi.request.*; 39 40 import java.util.*; 41 42 /********** target program **********/ 43 44 class ThreadGroupTarg { 45 public static void main(String[] args){ 46 System.out.println("Howdy!"); 47 System.out.println("Goodbye from ThreadGroupTarg!"); 48 } 49 } 50 51 /********** test program **********/ 52 53 public class ThreadGroupTest extends TestScaffold { 54 ReferenceType targetClass; 55 ThreadReference mainThread; 56 57 // Helper thread to fetch VirtualMachineManager 58 static class Fetcher implements Runnable { 59 public void run() { 60 Bootstrap.virtualMachineManager(); 61 } 62 } 63 64 ThreadGroupTest (String args[]) { 65 super(args); 66 } 67 68 public static void main(String[] args) throws Exception { 69 // create a random thread group, and run a thread in that group to 70 // fetch the VirtualMachineManager 71 ThreadGroup tg = new ThreadGroup("Gus"); 72 Fetcher fetcher = new Fetcher(); 73 Thread thr = new Thread(tg, fetcher); 74 thr.start(); 75 try { 76 thr.join(); 77 } catch (InterruptedException x) { } 78 // now destroy the thread group 79 tg.destroy(); 80 81 // run the test 82 new ThreadGroupTest(args).startTests(); 83 } 84 85 /********** test core **********/ 86 87 protected void runTests() throws Exception { 88 89 // run the target until it completes 90 startToMain("ThreadGroupTarg"); 91 listenUntilVMDisconnect(); 92 93 /* 94 * deal with results of test 95 * if anything has called failure("foo") testFailed will be true 96 */ 97 if (!testFailed) { 98 println("ThreadGroupTest: passed"); 99 } else { 100 throw new Exception("ThreadGroupTest: failed"); 101 } 102 } 103 }