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annotate agent/src/share/classes/sun/jvm/hotspot/ui/tree/MetadataTreeNodeAdapter.java @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
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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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23 */
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24
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25 package sun.jvm.hotspot.ui.tree;
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26
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27 import java.io.*;
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28 import sun.jvm.hotspot.oops.*;
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29 import sun.jvm.hotspot.debugger.*;
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30 import sun.jvm.hotspot.runtime.*;
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31
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32 /** An adapter class which allows oops to be displayed in a tree via
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33 the SimpleTreeNode interface. FIXME: must attach this to some sort
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34 of policy object which determines how to display names and whether
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35 VM fields should be shown. (Must also fix oop visitation mechanism
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36 in oops package.) */
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37
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38 public class MetadataTreeNodeAdapter extends FieldTreeNodeAdapter {
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39 private Metadata metadata;
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40
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41 /** The metadata may be null (for metadata fields of metadatas which are null); the
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42 FieldIdentifier may also be null (for the root node).
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43 treeTableMode defaults to false. */
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44 public MetadataTreeNodeAdapter(Metadata metadata, FieldIdentifier id) {
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45 this(metadata, id, false);
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46 }
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47
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48 /** The metadata may be null (for metadata fields of metadatas which are null); the
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49 FieldIdentifier may also be null (for the root node). */
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50 public MetadataTreeNodeAdapter(Metadata metadata, FieldIdentifier id, boolean treeTableMode) {
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51 super(id, treeTableMode);
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52 this.metadata = metadata;
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53 }
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54
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55 public Metadata getMetadata() {
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56 return metadata;
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57 }
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58
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59 public int getChildCount() {
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60 if (metadata == null) {
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61 return 0;
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62 }
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63
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64 Counter c = new Counter();
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65 metadata.iterate(c);
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66 return c.getNumFields() + (VM.getVM().getRevPtrs() == null ? 0 : 1);
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67 }
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68
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69 public SimpleTreeNode getChild(int index) {
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70 if (metadata == null) {
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71 return null;
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72 }
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73
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74 Fetcher f = new Fetcher(index);
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75 metadata.iterate(f);
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76 return f.getChild();
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77 }
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78
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79 public boolean isLeaf() {
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80 return (metadata == null);
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81 }
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82
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83 public int getIndexOfChild(SimpleTreeNode child) {
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84 if (child instanceof RevPtrsTreeNodeAdapter) {
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85 // assert(VM.getVM().getRevPtrs() != null, "Only created from revptrs");
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86 return 0;
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87 }
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88 FieldIdentifier id = ((FieldTreeNodeAdapter) child).getID();
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89 Finder f = new Finder(id);
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90 metadata.iterate(f);
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91 return f.getIndex() + (VM.getVM().getRevPtrs() == null ? 0 : 1);
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92 }
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93
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94 public String getValue() {
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95 if (metadata != null) {
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96 // FIXME: choose style of printing depending on whether we're
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97 // displaying VM fields? Want to make Java objects look like
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98 // Java objects.
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99 ByteArrayOutputStream bos = new ByteArrayOutputStream();
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100 metadata.printValueOn(new PrintStream(bos));
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101 return bos.toString();
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102 }
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103 return "null";
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104 }
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105
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106 /** Should be applied to one metadata at a time, then have the number of
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107 fields fetched. FIXME: want this to distinguish between VM and
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108 non-VM fields. */
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109 static class Counter extends DefaultMetadataVisitor {
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110 private int numFields;
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111
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112 public int getNumFields() {
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113 return numFields;
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114 }
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115
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116 public void prologue() {
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117 numFields = 0;
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118 }
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119
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120 public void doMetadata(MetadataField field, boolean isVMField) { ++numFields; }
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121 public void doOop(OopField field, boolean isVMField) { ++numFields; }
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122 public void doByte(ByteField field, boolean isVMField) { ++numFields; }
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123 public void doChar(CharField field, boolean isVMField) { ++numFields; }
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124 public void doBoolean(BooleanField field, boolean isVMField) { ++numFields; }
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125 public void doShort(ShortField field, boolean isVMField) { ++numFields; }
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126 public void doInt(IntField field, boolean isVMField) { ++numFields; }
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127 public void doLong(LongField field, boolean isVMField) { ++numFields; }
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128 public void doFloat(FloatField field, boolean isVMField) { ++numFields; }
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129 public void doDouble(DoubleField field, boolean isVMField) { ++numFields; }
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130 public void doCInt(CIntField field, boolean isVMField) { ++numFields; }
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131 }
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132
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133 /** Creates a new SimpleTreeNode for the given field. FIXME: want
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134 this to distinguish between VM and non-VM fields. */
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135 class Fetcher extends DefaultMetadataVisitor {
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136 private int index;
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137 private int curField;
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138 private SimpleTreeNode child;
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139
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140 public Fetcher(int index) {
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141 this.index = index;
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142 }
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143
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144 public SimpleTreeNode getChild() {
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145 return child;
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146 }
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147
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148 public void prologue() {
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149 curField = 0;
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150 }
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151
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152 public void doMetadata(MetadataField field, boolean isVMField) {
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153 if (curField == index) {
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154 try {
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155 child = new MetadataTreeNodeAdapter(field.getValue(getObj()), field.getID(), getTreeTableMode());
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156 } catch (AddressException e) {
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157 child = new BadAddressTreeNodeAdapter(getObj().getAddress().getAddressAt(field.getOffset()), field, getTreeTableMode());
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158 } catch (UnknownOopException e) {
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159 child = new BadAddressTreeNodeAdapter(getObj().getAddress().getAddressAt(field.getOffset()), field, getTreeTableMode());
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160 }
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161 }
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162 ++curField;
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163 }
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164
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165 public void doOop(OopField field, boolean isVMField) {
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166 if (curField == index) {
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167 try {
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168 child = new OopTreeNodeAdapter(field.getValue(getObj()), field.getID(), getTreeTableMode());
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169 } catch (AddressException e) {
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170 child = new BadAddressTreeNodeAdapter(field.getValueAsOopHandle(getObj()), field, getTreeTableMode());
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171 } catch (UnknownOopException e) {
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172 child = new BadAddressTreeNodeAdapter(field.getValueAsOopHandle(getObj()), field, getTreeTableMode());
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173 }
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174 }
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175 ++curField;
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176 }
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177
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178 public void doByte(ByteField field, boolean isVMField) {
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179 if (curField == index) {
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180 child = new LongTreeNodeAdapter(field.getValue(getObj()) & 0xFF, field.getID(), getTreeTableMode());
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181 }
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182 ++curField;
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183 }
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184
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185 public void doChar(CharField field, boolean isVMField) {
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186 if (curField == index) {
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187 child = new CharTreeNodeAdapter(field.getValue(getObj()), field.getID(), getTreeTableMode());
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188 }
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189 ++curField;
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190 }
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191
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192 public void doBoolean(BooleanField field, boolean isVMField) {
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193 if (curField == index) {
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194 child = new BooleanTreeNodeAdapter(field.getValue(getObj()), field.getID(), getTreeTableMode());
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195 }
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196 ++curField;
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197 }
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198
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199 public void doShort(ShortField field, boolean isVMField) {
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200 if (curField == index) {
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201 child = new LongTreeNodeAdapter(field.getValue(getObj()) & 0xFFFF, field.getID(), getTreeTableMode());
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202 }
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203 ++curField;
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204 }
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205
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206 public void doInt(IntField field, boolean isVMField) {
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207 if (curField == index) {
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208 child = new LongTreeNodeAdapter(field.getValue(getObj()) & 0xFFFFFFFF, field.getID(), getTreeTableMode());
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209 }
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210 ++curField;
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211 }
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212
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213 public void doLong(LongField field, boolean isVMField) {
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214 if (curField == index) {
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215 child = new LongTreeNodeAdapter(field.getValue(getObj()), field.getID(), getTreeTableMode());
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216 }
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217 ++curField;
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218 }
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219
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220 public void doFloat(FloatField field, boolean isVMField) {
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221 if (curField == index) {
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222 child = new FloatTreeNodeAdapter(field.getValue(getObj()), field.getID(), getTreeTableMode());
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223 }
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224 ++curField;
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225 }
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226
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227 public void doDouble(DoubleField field, boolean isVMField) {
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228 if (curField == index) {
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229 child = new DoubleTreeNodeAdapter(field.getValue(getObj()), field.getID(), getTreeTableMode());
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230 }
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231 ++curField;
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232 }
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233
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234 public void doCInt(CIntField field, boolean isVMField) {
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235 if (curField == index) {
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236 child = new LongTreeNodeAdapter(field.getValue(getObj()), field.getID(), getTreeTableMode());
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237 }
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238 ++curField;
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239 }
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240 }
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241
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242 /** Finds the index of the given FieldIdentifier. */
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243 static class Finder extends DefaultMetadataVisitor {
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244 private FieldIdentifier id;
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245 private int curField;
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246 private int index;
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247
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248 public Finder(FieldIdentifier id) {
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249 this.id = id;
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250 }
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251
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252 /** Returns -1 if not found */
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253 public int getIndex() {
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254 return index;
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255 }
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256
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257 public void prologue() {
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258 curField = 0;
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259 index = -1;
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260 }
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261
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262 public void doMetadata(MetadataField field, boolean isVMField) { if (field.getID().equals(id)) { index = curField; } ++curField; }
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263 public void doOop(OopField field, boolean isVMField) { if (field.getID().equals(id)) { index = curField; } ++curField; }
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264 public void doByte(ByteField field, boolean isVMField) { if (field.getID().equals(id)) { index = curField; } ++curField; }
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265 public void doChar(CharField field, boolean isVMField) { if (field.getID().equals(id)) { index = curField; } ++curField; }
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266 public void doBoolean(BooleanField field, boolean isVMField) { if (field.getID().equals(id)) { index = curField; } ++curField; }
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267 public void doShort(ShortField field, boolean isVMField) { if (field.getID().equals(id)) { index = curField; } ++curField; }
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268 public void doInt(IntField field, boolean isVMField) { if (field.getID().equals(id)) { index = curField; } ++curField; }
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269 public void doLong(LongField field, boolean isVMField) { if (field.getID().equals(id)) { index = curField; } ++curField; }
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270 public void doFloat(FloatField field, boolean isVMField) { if (field.getID().equals(id)) { index = curField; } ++curField; }
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271 public void doDouble(DoubleField field, boolean isVMField) { if (field.getID().equals(id)) { index = curField; } ++curField; }
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272 public void doCInt(CIntField field, boolean isVMField) { if (field.getID().equals(id)) { index = curField; } ++curField; }
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273 }
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274 }