1/*
2 * Copyright (c) 2008, 2014, 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 */
23package org.graalvm.compiler.jtt.jdk;
24
25import org.junit.Test;
26
27import sun.misc.Unsafe;
28
29import org.graalvm.compiler.jtt.JTTTest;
30
31public class Unsafe_compareAndSwapNullCheck extends JTTTest {
32
33    static final Unsafe unsafe = UnsafeAccess01.getUnsafe();
34    static final long valueOffset;
35    static {
36        try {
37            valueOffset = unsafe.objectFieldOffset(Unsafe_compareAndSwap.class.getDeclaredField("value"));
38        } catch (Exception ex) {
39            throw new Error(ex);
40        }
41    }
42
43    long value;
44    long lng;
45
46    public static void test(Unsafe_compareAndSwapNullCheck u, long expected, long newValue) {
47        @SuppressWarnings("unused")
48        long l = u.lng;
49        unsafe.compareAndSwapLong(u, valueOffset, expected, newValue);
50    }
51
52    @Test
53    public void run0() throws Throwable {
54        runTest(EMPTY, false, true, "test", null, 1L, 2L);
55    }
56}
57