Mercurial > hg > truffle

annotate test/compiler/unsafe/GetUnsafeObjectG1PreBarrier.java @ 12986:1b422ef5288a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8025728: Missing volatile specifier for field G1AllocRegion::_alloc_region Summary: The field G1AllocRegion::_alloc_region needs to be declared volatile as it is used with that intention. Otherwise the compiler may generate the code that reloads the value which might have changed in the meantime, leading to spurious crashes. Reviewed-by: iveresov, simonis, tschatzl Contributed-by: Axel Siebenborn <axel.siebenborn@sap.com>
author tschatzl
date Wed, 23 Oct 2013 10:23:06 +0200
parents 71526a36ebb4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12000
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
1 /*
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
4 *
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
7 * published by the Free Software Foundation.
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
8 *
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
13 * accompanied this code).
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
14 *
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
18 *
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
21 * questions.
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
22 */
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
23
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
24 /*
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
25 * @test
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
26 * @bug 8016474
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
27 * @summary The bug only happens with C1 and G1 using a different ObjectAlignmentInBytes than KlassAlignmentInBytes (which is 8)
12004
71526a36ebb4 8022029: GetUnsafeObjectG1PreBarrier fails on 32-bit with: Unrecognized VM option 'ObjectAlignmentInBytes=32'
twisti
parents: 12000
diff changeset
28 * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:ObjectAlignmentInBytes=32 GetUnsafeObjectG1PreBarrier
12000
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
29 */
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
30
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
31 import java.lang.reflect.Field;
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
32
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
33 import sun.misc.Unsafe;
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
34
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
35 public class GetUnsafeObjectG1PreBarrier {
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
36 private static final Unsafe unsafe;
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
37 private static final int N = 100_000;
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
38
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
39 static {
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
40 try {
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
41 Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
42 theUnsafe.setAccessible(true);
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
43 unsafe = (Unsafe) theUnsafe.get(null);
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
44 } catch (NoSuchFieldException | IllegalAccessException e) {
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
45 throw new IllegalStateException(e);
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
46 }
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
47 }
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
48
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
49 public Object a;
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
50
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
51 public static void main(String[] args) throws Throwable {
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
52 new GetUnsafeObjectG1PreBarrier();
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
53 }
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
54
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
55 public GetUnsafeObjectG1PreBarrier() throws Throwable {
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
56 doit();
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
57 }
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
58
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
59 private void doit() throws Throwable {
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
60 Field field = GetUnsafeObjectG1PreBarrier.class.getField("a");
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
61 long fieldOffset = unsafe.objectFieldOffset(field);
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
62
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
63 for (int i = 0; i < N; i++) {
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
64 readField(this, fieldOffset);
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
65 }
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
66 }
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
67
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
68 private void readField(Object o, long fieldOffset) {
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
69 unsafe.getObject(o, fieldOffset);
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
70 }
8d77d02828d9 8016474: Crash in sun.reflect.UnsafeObjectFieldAccessorImpl.get
twisti
parents:
diff changeset
71 }