jdk8-mips64-public/hotspot: test/runtime/7100935/TestConjointAtomicArraycopy.java@4bc28e6b9aba

     1 /*

     2  * Copyright 2011 SAP AG.  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  */

    24 /*

    25  * @test TestConjointAtomicArraycopy

    26  * @bug 7100935

    27  * @summary verify that oops are copied element-wise atomic

    28  * @run main/othervm -Xint TestConjointAtomicArraycopy

    29  * @run main/othervm -Xcomp -Xbatch TestConjointAtomicArraycopy

    30  * @author axel.siebenborn@sap.com

    31  */

    33 public class TestConjointAtomicArraycopy {

    35   static volatile Object [] testArray = new Object [4];

    37   static short[] a1 = new short[8];

    38   static short[] a2 = new short[8];

    39   static short[] a3 = new short[8];

    41   static volatile boolean keepRunning = true;

    43   static void testOopsCopy() throws InterruptedException{

    45   }

    47   public static void main(String[] args ) throws InterruptedException{

    48     for (int i = 0; i < testArray.length; i++){

    49       testArray[i] = new String("A");

    50     }

    52     Thread writer = new Thread (new Runnable(){

    53       public void run(){

    54         for (int i = 0 ; i < 1000000; i++) {

    55           System.arraycopy(testArray, 1, testArray, 0, 3);

    56           testArray[2] = new String("a");

    57         }

    58       }

    59     });

    61     Thread reader = new Thread( new Runnable(){

    62       public void run(){

    63         while (keepRunning){

    64           String name = testArray[2].getClass().getName();

    65           if(!(name.endsWith("String"))){

    66             throw new RuntimeException("got wrong class name");

    67           }

    68         }

    69       }

    70     });

    71     keepRunning = true;

    72     reader.start();

    73     writer.start();

    74     writer.join();

    75     keepRunning = false;

    76     reader.join();

    77   }

    78 }

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