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annotate test/compiler/testlibrary/rtm/AbortType.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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17871
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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 import com.oracle.java.testlibrary.Asserts;
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28
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29 import java.util.HashMap;
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30 import java.util.Map;
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31
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32 /**
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33 * Type of transactional execution abort.
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34 * For more details on different abort types please see
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35 * shared/vm/runtime/rtmLocking.hpp
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36 */
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37 public enum AbortType {
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38 XABORT(0),
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39 RETRIABLE(1),
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40 MEM_CONFLICT(2),
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41 BUF_OVERFLOW(3),
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42 DEBUG_BREAKPOINT(4),
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43 NESTED_ABORT(5);
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44
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45 private final int type;
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46 private static final Map<Integer, AbortType> LOOKUP_MAP = new HashMap<>();
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47
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48 static {
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49 for (AbortType abortType : AbortType.values()) {
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50 Asserts.assertFalse(LOOKUP_MAP.containsKey(abortType.type),
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51 "Abort type values should be unique.");
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52 LOOKUP_MAP.put(abortType.type, abortType);
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53 }
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54 }
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55
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56 private AbortType(int type) {
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57 this.type = type;
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58 }
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59
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60 /**
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61 * Returns AbortProvoker for aborts represented by this abort type.
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62 *
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63 * @return an AbortProvoker instance
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64 */
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65 public AbortProvoker provoker() {
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66 return AbortType.createNewProvoker(this);
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67 }
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68
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69 public static AbortType lookup(int type) {
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70 Asserts.assertLT(type, AbortType.values().length,
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71 "Unknown abort type.");
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72 return LOOKUP_MAP.get(type);
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73 }
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74
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75 /**
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76 * Returns transaction execution abort provoker for specified abortion type.
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77 *
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78 * @param type a type of abort which will be forced by returned
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79 * AbortProvoker instance.
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80 * @return AbortProvoker instance that will force abort of specified type
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81 * @throws RuntimeException if there is no provoker for specified type
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82 */
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83 private static AbortProvoker createNewProvoker(AbortType type) {
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84 switch (type) {
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85 case XABORT:
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86 return new XAbortProvoker();
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87 case MEM_CONFLICT:
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88 return new MemoryConflictProvoker();
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89 case BUF_OVERFLOW:
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90 return new BufferOverflowProvoker();
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91 case NESTED_ABORT:
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92 return new NestedAbortProvoker();
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93 default:
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94 throw new RuntimeException("No provoker exists for type "
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95 + type.name());
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96 }
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97 }
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98
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99 @Override
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100 public String toString() {
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101 return Integer.toString(type);
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102 }
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103 }