jdk8-mips64-public/hotspot: test/runtime/7100935/TestShortArraycopy.java@1cdbd42c3e49

     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 TestShortArraycopy

    26  * @bug 7100935

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

    28  * @run main/othervm -Xint TestShortArraycopy

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

    30  * @author volker.simonis@gmail.com

    31  */

    33 public class TestShortArraycopy {

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

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

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

    39   static volatile boolean keepRunning = true;

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

    43     for (int i = 0; i < a1.length ; i++) {

    44       a1[i] = (short)0xffff;

    45       a2[i] = (short)0xffff;

    46       a3[i] = (short)0x0000;

    47     }

    48     Thread reader = new Thread() {

    49       public void run() {

    50         while (keepRunning) {

    51           for (int j = 0; j < a1.length; j++) {

    52             short s = a1[j];

    53             if (s != (short)0xffff && s != (short)0x0000) {

    54               System.out.println("Error: s = " + s);

    55               throw new RuntimeException("wrong result");

    57             }

    58           }

    59         }

    60       }

    61     };

    62     Thread writer = new Thread() {

    63       public void run() {

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

    65           System.arraycopy(a2, 5, a1, 3, 3);

    66           System.arraycopy(a3, 5, a1, 3, 3);

    67         }

    68       }

    69     };

    70     keepRunning = true;

    71     reader.start();

    72     writer.start();

    73     writer.join();

    74     keepRunning = false;

    75     reader.join();

    76   }

    77 }

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