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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotMonitorValue.java @ 9631:3c9aeef2702c

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Value: provide proper `hashCode()' and `equals()' implementations
author Bernhard Urban <bernhard.urban@jku.at>
date Fri, 10 May 2013 12:43:43 +0200
parents ec06c7e67698
children 65d7696fb58a
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1 /*
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2 * Copyright (c) 2011, 2012, 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 package com.oracle.graal.hotspot.meta;
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24
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25 import com.oracle.graal.api.code.*;
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26 import com.oracle.graal.api.meta.*;
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27
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28 /**
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29 * Represents lock information in the debug information.
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30 */
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31 public final class HotSpotMonitorValue extends Value {
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32
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33 private static final long serialVersionUID = 8241681800464483691L;
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34
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35 private Value owner;
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36 private final StackSlot slot;
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37 private final boolean eliminated;
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38
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39 public HotSpotMonitorValue(Value owner, StackSlot slot, boolean eliminated) {
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40 super(Kind.Illegal);
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41 this.owner = owner;
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42 this.slot = slot;
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43 this.eliminated = eliminated;
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44 }
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45
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46 public Value getOwner() {
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47 return owner;
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48 }
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49
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50 public void setOwner(Value newOwner) {
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51 this.owner = newOwner;
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52 }
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53
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54 public Value getSlot() {
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55 return slot;
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56 }
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57
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58 public boolean isEliminated() {
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59 return eliminated;
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60 }
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61
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62 @Override
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63 public String toString() {
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64 return "monitor[" + owner + (slot != null ? ", " + slot : "") + (eliminated ? ", eliminated" : "") + "]";
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65 }
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66
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67 @Override
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68 public int hashCode() {
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69 final int prime = 31;
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70 int result = super.hashCode();
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71 result = prime * result + (eliminated ? 1231 : 1237);
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72 result = prime * result + ((owner == null) ? 0 : owner.hashCode());
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73 result = prime * result + ((slot == null) ? 0 : slot.hashCode());
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74 return result;
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75 }
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76
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77 @Override
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78 public boolean equals(Object obj) {
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79 if (this == obj) {
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80 return true;
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81 }
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82 if (!super.equals(obj)) {
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83 return false;
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84 }
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85 if (getClass() != obj.getClass()) {
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86 return false;
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87 }
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88 HotSpotMonitorValue other = (HotSpotMonitorValue) obj;
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89 if (eliminated != other.eliminated) {
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90 return false;
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91 }
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92 if (owner == null) {
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93 if (other.owner != null) {
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94 return false;
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95 }
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96 } else if (!owner.equals(other.owner)) {
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97 return false;
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98 }
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99 if (slot == null) {
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100 if (other.slot != null) {
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101 return false;
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102 }
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103 } else if (!slot.equals(other.slot)) {
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104 return false;
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105 }
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106 return true;
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107 }
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108 }