1 /*

     2  * Copyright (c) 2015, 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 /*

    25  * @test

    26  * @summary Verify behaviour of Unsafe.get/putShort

    27  * @library /testlibrary

    28  * @run main GetPutShort

    29  */

    30 

    31 import java.lang.reflect.Field;

    32 import com.oracle.java.testlibrary.*;

    33 import sun.misc.Unsafe;

    34 import static com.oracle.java.testlibrary.Asserts.*;

    35 

    36 public class GetPutShort {

    37     public static void main(String args[]) throws Exception {

    38         Unsafe unsafe = Utils.getUnsafe();

    39         Test t = new Test();

    40         Field field = Test.class.getField("s");

    41 

    42         int offset = unsafe.fieldOffset(field);

    43         assertEquals((short)-1, unsafe.getShort(t, offset));

    44         unsafe.putShort(t, offset, (short)0);

    45         assertEquals((short)0, unsafe.getShort(t, offset));

    46 

    47         long address = unsafe.allocateMemory(8);

    48         unsafe.putShort(address, (short)1);

    49         assertEquals((short)1, unsafe.getShort(address));

    50         unsafe.freeMemory(address);

    51 

    52         short arrayShort[] = { -1, 0, 1, 2 };

    53         int scale = unsafe.arrayIndexScale(arrayShort.getClass());

    54         offset = unsafe.arrayBaseOffset(arrayShort.getClass());

    55         for (int i = 0; i < arrayShort.length; i++) {

    56             assertEquals(unsafe.getShort(arrayShort, offset), arrayShort[i]);

    57             offset += scale;

    58         }

    59     }

    60 

    61     static class Test {

    62         public short s = -1;

    63     }

    64 }