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comparison test/compiler/8011901/Test8011901.java @ 10139:35c15dad89ea

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8011901: Unsafe.getAndAddLong(obj, off, delta) does not work properly with long deltas Summary: instruct xaddL_no_res shouldn't allow 64 bit constants. Reviewed-by: kvn
author roland
date Tue, 16 Apr 2013 17:06:39 +0200
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10125:f78763f49817 10139:35c15dad89ea
1 /*
2 * Copyright (c) 2013, 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 * @bug 8011901
27 * @summary instruct xaddL_no_res shouldn't allow 64 bit constants.
28 * @run main/othervm -XX:-BackgroundCompilation Test8011901
29 *
30 */
31
32 import java.lang.reflect.*;
33 import sun.misc.*;
34
35 public class Test8011901 {
36
37 private long ctl;
38
39 private static final sun.misc.Unsafe U;
40 private static final long CTL;
41
42 static {
43 try {
44 Field unsafe = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
45 unsafe.setAccessible(true);
46 U = (sun.misc.Unsafe) unsafe.get(null);
47 CTL = U.objectFieldOffset(Test8011901.class.getDeclaredField("ctl"));
48 } catch (Exception e) {
49 throw new Error(e);
50 }
51 }
52
53 public static void main(String[] args) {
54 for(int c = 0; c < 20000; c++) {
55 new Test8011901().makeTest();
56 }
57 System.out.println("Test Passed");
58 }
59
60 public static final long EXPECTED = 1L << 42;
61
62 public void makeTest() {
63 U.getAndAddLong(this, CTL, EXPECTED);
64 if (ctl != EXPECTED) {
65 throw new RuntimeException("Test failed. Expected: " + EXPECTED + ", but got = " + ctl);
66 }
67 }
68 }