1 /*
   2  * Copyright (c) 1999, 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 4288198
  27  * @summary Killing a Timer thread causes the Timer to fail silently on
  28  *          subsequent use.
  29  */
  30 
  31 import java.util.*;
  32 
  33 public class KillThread {
  34     public static void main (String[] args) throws Exception  {
  35         final Thread[] tdThread = new Thread[1];
  36         Timer t = new Timer();
  37 
  38         // Start a mean event that kills the timer thread
  39         t.schedule(new TimerTask() {
  40             public void run() {
  41                 tdThread[0] = Thread.currentThread();
  42                 throw new ThreadDeath();
  43             }
  44         }, 0);
  45 
  46         // Wait for mean event to do the deed and thread to die.
  47         try {
  48             do {
  49                 Thread.sleep(100);
  50             } while(tdThread[0] == null);
  51         } catch(InterruptedException e) {
  52         }
  53         tdThread[0].join();
  54 
  55         // Try to start another event
  56         try {
  57             // Timer thread is dead now
  58             t.schedule(new TimerTask() {
  59                 public void run() {
  60                 }
  61             }, 0);
  62             throw new Exception("We failed silently");
  63         } catch(IllegalStateException e) {
  64             // Killing the Timer thread is equivalent to cancelling the Timer
  65         }
  66     }
  67 }