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 */
34import com.sun.jdi.*;
35import com.sun.jdi.event.*;
36import com.sun.jdi.request.*;
37
38import java.util.*;
39
40    /********** target program **********/
41
42class 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
55public 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}
121