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1 /* |
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2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 import org.testng.annotations.Test; |
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25 import org.testng.Assert; |
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26 |
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27 import java.util.concurrent.TimeUnit; |
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28 import java.util.concurrent.locks.Condition; |
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29 import java.util.concurrent.locks.ReentrantLock; |
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30 |
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31 import com.oracle.java.testlibrary.dcmd.CommandExecutor; |
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32 import com.oracle.java.testlibrary.dcmd.JMXExecutor; |
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33 |
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34 /* |
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35 * @test |
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36 * @summary Test of diagnostic command GC.run_finalization |
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37 * @library /testlibrary |
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38 * @build com.oracle.java.testlibrary.* |
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39 * @build com.oracle.java.testlibrary.dcmd.* |
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40 * @run testng RunFinalizationTest |
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41 */ |
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42 public class RunFinalizationTest { |
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43 static ReentrantLock lock = new ReentrantLock(); |
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44 static Condition cond = lock.newCondition(); |
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45 static volatile boolean wasFinalized = false; |
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46 static volatile boolean wasInitialized = false; |
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47 |
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48 class MyObject { |
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49 public MyObject() { |
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50 /* Make sure object allocation/deallocation is not optimized out */ |
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51 wasInitialized = true; |
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52 } |
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53 |
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54 protected void finalize() { |
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55 lock.lock(); |
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56 wasFinalized = true; |
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57 cond.signalAll(); |
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58 lock.unlock(); |
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59 } |
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60 } |
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61 |
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62 public static MyObject o; |
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63 |
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64 public void run(CommandExecutor executor) { |
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65 lock.lock(); |
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66 o = new MyObject(); |
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67 o = null; |
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68 System.gc(); |
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69 executor.execute("GC.run_finalization"); |
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70 |
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71 int waited = 0; |
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72 int waitTime = 15; |
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73 |
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74 try { |
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75 System.out.println("Waiting for signal from finalizer"); |
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76 |
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77 while (!cond.await(waitTime, TimeUnit.SECONDS)) { |
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78 waited += waitTime; |
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79 System.out.println(String.format("Waited %d seconds", waited)); |
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80 } |
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81 |
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82 System.out.println("Received signal"); |
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83 } catch (InterruptedException e) { |
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84 Assert.fail("Test error: Interrupted while waiting for signal from finalizer", e); |
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85 } finally { |
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86 lock.unlock(); |
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87 } |
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88 |
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89 if (!wasFinalized) { |
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90 Assert.fail("Test failure: Object was not finalized"); |
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91 } |
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92 } |
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93 |
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94 @Test |
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95 public void jmx() { |
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96 run(new JMXExecutor()); |
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97 } |
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98 } |