1 /*
   2  * Copyright (c) 2004, 2013, 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 import static java.lang.Thread.State.*;
  25 
  26 /*
  27  * @test
  28  * @bug     5014783 8022208
  29  * @summary Basic unit test of thread states returned by
  30  *          Thread.getState().
  31  *
  32  * @author  Mandy Chung
  33  * @library /lib/testlibrary
  34  * @build jdk.testlibrary.*
  35  * @build ThreadStateTest ThreadStateController
  36  * @run main/othervm -Xmixed ThreadStateTest
  37  */
  38 
  39 public class ThreadStateTest {
  40     private static boolean testFailed = false;
  41 
  42     // used to achieve waiting states
  43     private static final Object globalLock = new Object();
  44 
  45     public static void main(String[] argv) throws Exception {
  46         // Call Thread.getState to force all initialization done
  47         // before test verification begins.
  48         Thread.currentThread().getState();
  49         ThreadStateController thread = new ThreadStateController("StateChanger", globalLock);
  50         thread.setDaemon(true);
  51 
  52         // before myThread starts
  53         thread.checkThreadState(NEW);
  54 
  55         thread.start();
  56         thread.transitionTo(RUNNABLE);
  57         thread.checkThreadState(RUNNABLE);
  58 
  59         synchronized (globalLock) {
  60             thread.transitionTo(BLOCKED);
  61             thread.checkThreadState(BLOCKED);
  62         }
  63 
  64         thread.transitionTo(WAITING);
  65         thread.checkThreadState(WAITING);
  66 
  67         thread.transitionTo(TIMED_WAITING);
  68         thread.checkThreadState(TIMED_WAITING);
  69 
  70         thread.transitionToPark(true /* timed park*/);
  71         thread.checkThreadState(TIMED_WAITING);
  72 
  73         thread.transitionToPark(false /* indefinite park */);
  74         thread.checkThreadState(WAITING);
  75 
  76         thread.transitionToSleep();
  77         thread.checkThreadState(TIMED_WAITING);
  78 
  79         thread.transitionTo(TERMINATED);
  80         thread.checkThreadState(TERMINATED);
  81 
  82         try {
  83             thread.join();
  84         } catch (InterruptedException e) {
  85             e.printStackTrace();
  86             System.out.println("Unexpected exception.");
  87             testFailed = true;
  88         }
  89 
  90         if (testFailed)
  91             throw new RuntimeException("TEST FAILED.");
  92         System.out.println("Test passed.");
  93     }
  94 }