001/*
002 * Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.jtt.jdk;
024
025import org.junit.*;
026
027import sun.misc.*;
028
029import com.oracle.graal.jtt.*;
030
031public class Unsafe_compareAndSwapNullCheck extends JTTTest {
032
033    static final Unsafe unsafe = UnsafeAccess01.getUnsafe();
034    static final long valueOffset;
035    static {
036        try {
037            valueOffset = unsafe.objectFieldOffset(Unsafe_compareAndSwap.class.getDeclaredField("value"));
038        } catch (Exception ex) {
039            throw new Error(ex);
040        }
041    }
042
043    long value;
044    long lng;
045
046    public static void test(Unsafe_compareAndSwapNullCheck u, long expected, long newValue) {
047        @SuppressWarnings("unused")
048        long l = u.lng;
049        unsafe.compareAndSwapLong(u, valueOffset, expected, newValue);
050    }
051
052    @Test
053    public void run0() throws Throwable {
054        runTest(EMPTY, false, true, "test", null, 1L, 2L);
055    }
056}