1 /* 2 * Copyright (c) 2001, 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 4513488 27 * @summary Test for JDI: Internal JDI helper threads should setDaemon(true) 28 * 29 * @author Tim Bell 30 * 31 * @modules jdk.jdi 32 * @run build TestScaffold VMConnection TargetListener TargetAdapter 33 * @run compile -g DebuggerThreadTest.java 34 * @run driver DebuggerThreadTest 35 */ 36 import com.sun.jdi.*; 37 import com.sun.jdi.event.*; 38 import com.sun.jdi.request.*; 39 40 import java.util.*; 41 42 /********** target program **********/ 43 44 class DebuggerThreadTarg { 45 public void ready() { 46 } 47 public static void main(String[] args){ 48 System.out.println("Howdy!"); 49 DebuggerThreadTarg targ = new DebuggerThreadTarg(); 50 targ.ready(); 51 System.out.println("Goodbye from DebuggerThreadTarg!"); 52 } 53 } 54 55 /********** test program **********/ 56 57 public class DebuggerThreadTest extends TestScaffold { 58 59 DebuggerThreadTest (String args[]) { 60 super(args); 61 } 62 63 public static void main(String[] args) throws Exception { 64 new DebuggerThreadTest(args).startTests(); 65 } 66 67 /* 68 * Move to top ThreadGroup and dump all threads. 69 */ 70 public void dumpThreads() { 71 ThreadGroup tg = Thread.currentThread().getThreadGroup(); 72 ThreadGroup parent = tg.getParent(); 73 while (parent != null) { 74 tg = parent; 75 parent = tg.getParent(); 76 } 77 int listThreads = tg.activeCount(); 78 Thread list[] = new Thread[listThreads * 2]; 79 int gotThreads = tg.enumerate(list, true); 80 for (int i = 0; i < Math.min(gotThreads, list.length); i++){ 81 Thread t = list[i]; 82 String groupName = t.getThreadGroup().getName(); 83 84 System.out.println("Thread [" + i + "] group = '" + 85 groupName + 86 "' name = '" + t.getName() + 87 "' daemon = " + t.isDaemon()); 88 89 if (groupName.startsWith("JDI ") && 90 (! t.isDaemon())) { 91 failure("FAIL: non-daemon thread '" + t.getName() + 92 "' found in ThreadGroup '" + groupName + "'"); 93 } 94 95 } 96 } 97 98 protected void runTests() throws Exception { 99 try { 100 /* 101 * Get to the top of ready() 102 */ 103 startTo("DebuggerThreadTarg", "ready", "()V"); 104 105 dumpThreads(); 106 107 listenUntilVMDisconnect(); 108 109 } finally { 110 /* 111 * deal with results of test 112 * if anything has called failure("foo") testFailed will be true 113 */ 114 if (!testFailed) { 115 println("DebuggerThreadTest: passed"); 116 } else { 117 throw new Exception("DebuggerThreadTest: failed"); 118 } 119 } 120 return; 121 } 122 }