1/*
2 * Copyright (c) 2000, 2002, 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/* Utility class for test threads
25 *
26 */
27
28import java.io.*;
29
30
31public abstract class TestThread
32    extends Thread
33{
34    Exception failure = null;
35    String name;
36    protected final PrintStream log;
37    Thread main;
38
39    TestThread(String name, PrintStream log) {
40        super("TestThread-" + name);
41        this.name = name;
42        this.log = log;
43        this.main = Thread.currentThread();
44        setDaemon(true);
45    }
46
47    TestThread(String name) {
48        this(name, System.err);
49    }
50
51    abstract void go() throws Exception;
52
53    public void run() {
54        try {
55            go();
56        } catch (Exception x) {
57            failure = x;
58            main.interrupt();
59        }
60    }
61
62    int finish(long timeout) {
63        try {
64            join(timeout);
65        } catch (InterruptedException x) { }
66        if (isAlive() && (failure == null))
67            failure = new Exception(name + ": Timed out");
68        if (failure != null) {
69            failure.printStackTrace(log);
70            return 0;
71        }
72        return 1;
73    }
74
75    void finishAndThrow(long timeout) throws Exception {
76        try {
77            join(timeout);
78        } catch (InterruptedException x) { }
79        if (failure != null)
80            failure = new Exception(name + " threw an exception",
81                                    failure);
82        if (isAlive() && (failure == null))
83            failure = new Exception(name + " timed out");
84        if (failure != null)
85            throw failure;
86    }
87
88    public String toString() {
89        return name;
90    }
91
92}
93