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annotate test/compiler/testlibrary/rtm/XAbortProvoker.java @ 19345:0d85421cb5d6

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Truffle/Instrumentation: add missing support method for InstrumentationPartialEvaluatinoTest
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Thu, 12 Feb 2015 17:25:50 -0800
parents 665bbe93823f
children
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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
665bbe93823f 8039499: Add all common classes used by tests on RTM support to testlibrary
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
665bbe93823f 8039499: Add all common classes used by tests on RTM support to testlibrary
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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 import com.oracle.java.testlibrary.Utils;
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28 import sun.misc.Unsafe;
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29
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30 /**
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31 * Current RTM locking implementation force transaction abort
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32 * before native method call by explicit xabort(0) call.
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33 */
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34 class XAbortProvoker extends AbortProvoker {
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35 // Following field have to be static in order to avoid escape analysis.
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36 @SuppressWarnings("UnsuedDeclaration")
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37 private static int field = 0;
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38 private static final Unsafe UNSAFE = Utils.getUnsafe();
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39
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40 public XAbortProvoker() {
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41 this(new Object());
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42 }
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43
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44 public XAbortProvoker(Object monitor) {
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45 super(monitor);
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46 }
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47
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48 @Override
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49 public void forceAbort() {
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50 synchronized(monitor) {
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51 XAbortProvoker.field = UNSAFE.addressSize();
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52 }
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53 }
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54
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55 @Override
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56 public String[] getMethodsToCompileNames() {
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57 return new String[] {
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58 getMethodWithLockName(),
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59 Unsafe.class.getName() + "::addressSize"
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60 };
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61 }
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62 }