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  * @library /testlibrary
  27  * @run main FieldOffset
  28  */
  29 
  30 import java.lang.reflect.Field;
  31 import com.oracle.java.testlibrary.*;
  32 import sun.misc.Unsafe;
  33 import java.lang.reflect.*;
  34 import static com.oracle.java.testlibrary.Asserts.*;
  35 
  36 public class FieldOffset {
  37     public static void main(String args[]) throws Exception {
  38         Unsafe unsafe = Utils.getUnsafe();
  39         Field fields[] = Test.class.getDeclaredFields();
  40 
  41         for (int i = 0; i < fields.length; i++) {
  42             int offset = unsafe.fieldOffset(fields[i]);
  43             assertNotEquals(offset, unsafe.INVALID_FIELD_OFFSET);
  44 
  45             for (int j = 0; j < i; j++) {
  46                 assertNotEquals(offset, unsafe.fieldOffset(fields[j]));
  47             }
  48         }
  49     }
  50 
  51     class Test {
  52         boolean booleanField;
  53         byte byteField;
  54         char charField;
  55         double doubleField;
  56         float floatField;
  57         int intField;
  58         long longField;
  59         Object objectField;
  60         short shortField;
  61     }
  62 
  63 }