1 /*
   2  * Copyright 2008 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 
  25 /*
  26  * @test
  27  * @bug 6772683
  28  * @summary Thread.isInterrupted() fails to return true on multiprocessor PC
  29  * @run main/othervm InterruptedTest
  30  */
  31 
  32 public class InterruptedTest {
  33 
  34     public static void main(String[] args) throws Exception {
  35         Thread workerThread = new Thread("worker") {
  36             public void run() {
  37                 System.out.println("Worker thread: running...");
  38                 while (!Thread.currentThread().isInterrupted()) {
  39                 }
  40                 System.out.println("Worker thread: bye");
  41             }
  42         };
  43         System.out.println("Main thread: starts a worker thread...");
  44         workerThread.start();
  45         System.out.println("Main thread: waits at most 5s for the worker thread to die...");
  46         workerThread.join(5000); // Wait 5 sec to let run() method to be compiled
  47         int ntries = 0;
  48         while (workerThread.isAlive() && ntries < 5) {
  49             System.out.println("Main thread: interrupts the worker thread...");
  50             workerThread.interrupt();
  51             if (workerThread.isInterrupted()) {
  52                 System.out.println("Main thread: worker thread is interrupted");
  53             }
  54             ntries++;
  55             System.out.println("Main thread: waits for the worker thread to die...");
  56             workerThread.join(1000); // Wait 1 sec and try again
  57         }
  58         if (ntries == 5) {
  59           System.out.println("Main thread: the worker thread dod not die");
  60           System.exit(97);
  61         }
  62         System.out.println("Main thread: bye");
  63     }
  64 
  65 }