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 
28 import java.io.*;
29 
30 
31 public abstract class TestThread
32     extends Thread
33 {
34     Exception failure = null;
35     String name;
36     protected final PrintStream log;
37     Thread main;
38 
TestThread(String name, PrintStream log)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 
TestThread(String name)47     TestThread(String name) {
48         this(name, System.err);
49     }
50 
go()51     abstract void go() throws Exception;
52 
run()53     public void run() {
54         try {
55             go();
56         } catch (Exception x) {
57             failure = x;
58             main.interrupt();
59         }
60     }
61 
finish(long timeout)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 
finishAndThrow(long timeout)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 
toString()88     public String toString() {
89         return name;
90     }
91 
92 }
93