/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @summary Verifies the behaviour of Unsafe.fieldOffset

 * @library /testlibrary

 * @run main FieldOffset

 */

import java.lang.reflect.Field;

import com.oracle.java.testlibrary.*;

import sun.misc.Unsafe;

import java.lang.reflect.*;

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

public class FieldOffset {

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

        Unsafe unsafe = Utils.getUnsafe();

        Field fields[] = Test.class.getDeclaredFields();

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

            int offset = unsafe.fieldOffset(fields[i]);

            // Ensure we got a valid offset value back

            assertNotEquals(offset, unsafe.INVALID_FIELD_OFFSET);

            // Make sure the field offset is unique

            for (int j = 0; j < i; j++) {

                assertNotEquals(offset, unsafe.fieldOffset(fields[j]));

            }

        }

    }

    class Test {

        boolean booleanField;

        byte byteField;

        char charField;

        double doubleField;

        float floatField;

        int intField;

        long longField;

        Object objectField;

        short shortField;

    }

}