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comparison test/compiler/testlibrary/rtm/BufferOverflowProvoker.java @ 17871:665bbe93823f

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8039499: Add all common classes used by tests on RTM support to testlibrary Reviewed-by: kvn, iignatyev Contributed-by: filipp.zhinkin@oracle.com
author iignatyev
date Mon, 14 Apr 2014 19:29:34 +0400
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17870:a0eb3f61d34a 17871:665bbe93823f
1 /*
2 * Copyright (c) 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 *
23 */
24
25 package rtm;
26
27 /**
28 * In order to provoke transactional execution abort due to
29 * internal's buffer overflow BufferOverflowProvoker modifies
30 * 1MB of BYTES during single transaction.
31 */
32 class BufferOverflowProvoker extends AbortProvoker {
33 /**
34 * To force buffer overflow abort we modify memory region with
35 * size more then L1d cache size.
36 */
37 private static final int MORE_THAN_L1D_SIZE = 1024 * 1024;
38 private static final byte[] DATA = new byte[MORE_THAN_L1D_SIZE];
39
40 @Override
41 public void forceAbort() {
42 synchronized(monitor) {
43 for (int i = 0; i < BufferOverflowProvoker.DATA.length; i++) {
44 BufferOverflowProvoker.DATA[i]++;
45 }
46 }
47 }
48 }