Mercurial > hg > truffle
annotate test/compiler/testlibrary/rtm/BufferOverflowProvoker.java @ 18970:edf3a7fdd067
Add utility methods to GuardsStage.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Tue, 27 Jan 2015 14:54:55 +0100 |
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1 /* |
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 package rtm; |
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26 |
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27 /** |
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28 * In order to provoke transactional execution abort due to |
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29 * internal's buffer overflow BufferOverflowProvoker modifies |
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30 * 1MB of BYTES during single transaction. |
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31 */ |
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32 class BufferOverflowProvoker extends AbortProvoker { |
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33 /** |
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34 * To force buffer overflow abort we modify memory region with |
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35 * size more then L1d cache size. |
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36 */ |
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37 private static final int MORE_THAN_L1D_SIZE = 1024 * 1024; |
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38 private static final byte[] DATA = new byte[MORE_THAN_L1D_SIZE]; |
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39 |
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40 @Override |
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41 public void forceAbort() { |
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42 synchronized(monitor) { |
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43 for (int i = 0; i < BufferOverflowProvoker.DATA.length; i++) { |
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44 BufferOverflowProvoker.DATA[i]++; |
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45 } |
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46 } |
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47 } |
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48 } |