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 }