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annotate graal/com.oracle.jvmci.debug/src/com/oracle/jvmci/debug/internal/DebugValueMap.java @ 21794:483b357016a6

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Use export target explicitly in mx_graal.py when building JDK (JBS:GRAAL-52)
author Stefan Anzinger <stefan.anzinger@oracle.com>
date Mon, 08 Jun 2015 20:30:39 +0200
parents b1530a6cce8c
children
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1 /*
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2 * Copyright (c) 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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b1530a6cce8c renamed com.oracle.graal.[debug|options|hotspotvmconfig]* modules to com.oracle.jvmci.[debug|options|hotspotvmconfig]* modules (JBS:GRAAL-53)
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23 package com.oracle.jvmci.debug.internal;
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24
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25 import java.util.*;
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26
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27 /**
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28 * A node in a tree of {@link DebugValue}s.
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29 */
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30 public class DebugValueMap {
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31
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32 private static final List<DebugValueMap> topLevelMaps = new ArrayList<>();
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33
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34 private long[] values;
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35 private List<DebugValueMap> children;
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36 private String name;
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37
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38 public DebugValueMap(String name) {
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39 this.name = name;
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40 }
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41
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42 public void setCurrentValue(int index, long l) {
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43 ensureSize(index);
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44 values[index] = l;
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45 }
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46
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47 public long getCurrentValue(int index) {
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48 ensureSize(index);
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49 return values[index];
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50 }
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51
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52 public void clearChildren() {
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53 if (children != null) {
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54 children.clear();
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55 }
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56 }
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57
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58 public void reset() {
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59 if (values != null) {
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60 Arrays.fill(values, 0L);
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61 }
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62 if (children != null) {
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63 for (DebugValueMap child : children) {
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64 child.reset();
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65 }
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66 }
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67 }
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68
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69 private void ensureSize(int index) {
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70 if (values == null) {
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71 values = new long[index + 1];
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72 }
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73 if (values.length <= index) {
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74 values = Arrays.copyOf(values, index + 1);
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75 }
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76 }
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77
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78 private int capacity() {
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79 return (values == null) ? 0 : values.length;
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80 }
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81
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82 public void addChild(DebugValueMap map) {
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83 if (children == null) {
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84 children = new ArrayList<>(4);
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85 }
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86 children.add(map);
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87 }
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88
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89 public List<DebugValueMap> getChildren() {
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90 if (children == null) {
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91 return Collections.emptyList();
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92 } else {
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93 return Collections.unmodifiableList(children);
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94 }
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95 }
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96
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97 public boolean hasChildren() {
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98 return children != null && !children.isEmpty();
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99 }
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100
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101 public String getName() {
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102 return this.name;
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103 }
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104
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105 @Override
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106 public String toString() {
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107 return "DebugValueMap<" + getName() + ">";
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108 }
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109
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110 public static synchronized void registerTopLevel(DebugValueMap map) {
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111 topLevelMaps.add(map);
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112 }
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113
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114 public static synchronized List<DebugValueMap> getTopLevelMaps() {
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115 return topLevelMaps;
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116 }
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117
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118 public void normalize() {
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119 if (hasChildren()) {
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120 Map<String, DebugValueMap> occurred = new HashMap<>();
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121 for (DebugValueMap map : children) {
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122 String mapName = map.getName();
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123 if (!occurred.containsKey(mapName)) {
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124 occurred.put(mapName, map);
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125 map.normalize();
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126 } else {
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127 occurred.get(mapName).mergeWith(map);
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128 occurred.get(mapName).normalize();
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129 }
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130 }
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131
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132 if (occurred.values().size() < children.size()) {
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133 // At least one duplicate was found.
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134 children.clear();
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135 for (DebugValueMap map : occurred.values()) {
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136 addChild(map);
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137 map.normalize();
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138 }
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139 }
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140 }
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141 }
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142
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143 private void mergeWith(DebugValueMap map) {
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144 if (map.hasChildren()) {
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145 if (hasChildren()) {
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146 children.addAll(map.children);
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147 } else {
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148 children = map.children;
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149 }
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150 map.children = null;
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151 }
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152
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153 int size = Math.max(this.capacity(), map.capacity());
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154 ensureSize(size);
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155 for (int i = 0; i < size; ++i) {
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156 long curValue = getCurrentValue(i);
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157 long otherValue = map.getCurrentValue(i);
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158 setCurrentValue(i, curValue + otherValue);
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159 }
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160 }
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161
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162 public void group() {
4639
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163 if (this.hasChildren()) {
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164 List<DebugValueMap> oldChildren = new ArrayList<>(this.children);
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165 this.children.clear();
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166 for (DebugValueMap map : oldChildren) {
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167 mergeWith(map);
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168 }
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169 }
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170 }
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171 }