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