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annotate jvmci/com.oracle.jvmci.code/src/com/oracle/jvmci/code/DebugInfo.java @ 21798:395ac43a8578

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moved JVMCI sources from graal/ to jvmci/ directory
author Doug Simon <doug.simon@oracle.com>
date Tue, 09 Jun 2015 00:22:49 +0200
parents graal/com.oracle.jvmci.code/src/com/oracle/jvmci/code/DebugInfo.java@f5b549811bac
children
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1 /*
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2 * Copyright (c) 2009, 2011, 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.jvmci.code;
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24
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25 import com.oracle.jvmci.meta.Value;
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26 import java.util.*;
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27
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28 /**
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29 * Represents the debugging information for a particular point of execution. This information
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30 * includes:
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31 * <ul>
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32 * <li>a {@linkplain #getBytecodePosition() bytecode position}</li>
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33 * <li>a reference map for registers and stack slots in the current frame</li>
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34 * <li>a map from bytecode locals and operand stack slots to their values or locations from which
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35 * their values can be read</li>
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36 * <li>a map from the registers (in the caller's frame) to the slots where they are saved in the
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37 * current frame</li>
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38 * </ul>
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39 */
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40 public final class DebugInfo {
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41
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42 private final BytecodePosition bytecodePosition;
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43 private final ReferenceMap referenceMap;
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44 @SuppressWarnings("unused") private final Value[] virtualObjectMapping;
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45 private RegisterSaveLayout calleeSaveInfo;
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46
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47 /**
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48 * Creates a new {@link DebugInfo} from the given values.
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49 *
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50 * @param codePos the {@linkplain BytecodePosition code position} or {@linkplain BytecodeFrame
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51 * frame} info
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52 * @param referenceMap the reference map
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53 * @param virtualObjectMapping the mapping of {@link VirtualObject}s to their real values
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54 */
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55 public DebugInfo(BytecodePosition codePos, ReferenceMap referenceMap, Value[] virtualObjectMapping) {
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56 this.bytecodePosition = codePos;
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57 this.referenceMap = referenceMap;
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58 this.virtualObjectMapping = virtualObjectMapping;
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59 }
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60
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61 public DebugInfo(BytecodePosition codePos) {
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62 this(codePos, null, null);
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63 }
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64
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65 /**
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66 * @return {@code true} if this debug information has a frame
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67 */
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68 public boolean hasFrame() {
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69 return getBytecodePosition() instanceof BytecodeFrame;
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70 }
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71
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72 /**
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73 * Gets the deoptimization information for each inlined frame (if available).
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74 *
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75 * @return {@code null} if no frame de-opt info is {@linkplain #hasFrame() available}
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76 */
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77 public BytecodeFrame frame() {
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78 if (hasFrame()) {
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79 return (BytecodeFrame) getBytecodePosition();
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80 }
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81 return null;
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82 }
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83
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84 @Override
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85 public String toString() {
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86 return CodeUtil.append(new StringBuilder(100), this, null).toString();
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87 }
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88
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89 /**
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90 * @return The code position (including all inlined methods) of this debug info. If this is a
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91 * {@link BytecodeFrame} instance, then it is also the deoptimization information for
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92 * each inlined frame.
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93 */
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94 public BytecodePosition getBytecodePosition() {
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95 return bytecodePosition;
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96 }
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97
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98 public ReferenceMap getReferenceMap() {
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99 return referenceMap;
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100 }
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101
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102 /**
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103 * Sets the map from the registers (in the caller's frame) to the slots where they are saved in
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104 * the current frame.
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105 */
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106 public void setCalleeSaveInfo(RegisterSaveLayout calleeSaveInfo) {
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107 this.calleeSaveInfo = calleeSaveInfo;
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108 }
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109
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110 /**
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111 * Gets the map from the registers (in the caller's frame) to the slots where they are saved in
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112 * the current frame. If no such information is available, {@code null} is returned.
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113 */
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114 public RegisterSaveLayout getCalleeSaveInfo() {
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115 return calleeSaveInfo;
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116 }
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117
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118 @Override
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119 public int hashCode() {
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120 throw new UnsupportedOperationException("hashCode");
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121 }
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122
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123 @Override
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124 public boolean equals(Object obj) {
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125 if (this == obj) {
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126 return true;
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127 }
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128 if (obj instanceof DebugInfo) {
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129 DebugInfo that = (DebugInfo) obj;
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130 if (Objects.equals(this.bytecodePosition, that.bytecodePosition) && Objects.equals(this.calleeSaveInfo, that.calleeSaveInfo) && Objects.equals(this.referenceMap, that.referenceMap)) {
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131 return true;
d60dd21329f2 implemented .equals() for CompilationResult and the objects it encapsulates
Doug Simon <doug.simon@oracle.com>
parents: 14906
diff changeset
132 }
d60dd21329f2 implemented .equals() for CompilationResult and the objects it encapsulates
Doug Simon <doug.simon@oracle.com>
parents: 14906
diff changeset
133 }
d60dd21329f2 implemented .equals() for CompilationResult and the objects it encapsulates
Doug Simon <doug.simon@oracle.com>
parents: 14906
diff changeset
134 return false;
d60dd21329f2 implemented .equals() for CompilationResult and the objects it encapsulates
Doug Simon <doug.simon@oracle.com>
parents: 14906
diff changeset
135 }
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
136 }