1 /*

     2  * Copyright 2000-2002 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any 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 

    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 }