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1 /*
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2 * Copyright 2002-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any 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;
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26
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27 import java.util.*;
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28 import java.io.*;
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29 import java.awt.*;
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30 import java.awt.event.*;
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31 import javax.swing.*;
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32 import javax.swing.text.*;
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33
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34 import sun.jvm.hotspot.debugger.*;
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35 import sun.jvm.hotspot.oops.*;
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36 import sun.jvm.hotspot.runtime.*;
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37 import sun.jvm.hotspot.utilities.*;
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38
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39 /** Finds a given (Address) value in the heap. Only intended for use
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40 in a debugging system. */
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41
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42 public class FindInHeapPanel extends JPanel {
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43 private RawHeapVisitor iterator;
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44 private long addressSize;
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45 private long usedSize;
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46 private long iterated;
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47 private Address value;
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48 private ProgressBarPanel progressBar;
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49 private HistoryComboBox addressField;
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50 private JButton findButton;
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51 private JTextArea textArea;
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52 private ArrayList updates;
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53 private double lastFrac;
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54
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55 static final double minUpdateFraction = 0.05;
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56
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57 public FindInHeapPanel() {
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58 super();
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59
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60 setLayout(new BorderLayout());
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61
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62 JPanel topPanel = new JPanel();
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63 topPanel.setLayout(new BoxLayout(topPanel, BoxLayout.Y_AXIS));
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64
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65 JPanel panel = new JPanel();
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66 panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS));
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67 panel.add(new JLabel("Address to search for:"));
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68
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69 addressField = new HistoryComboBox();
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70 panel.add(addressField);
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71
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72 addressSize = VM.getVM().getAddressSize();
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73
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74 iterator = new RawHeapVisitor() {
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75 boolean error = false;
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76
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77 public void prologue(long used) {
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78 usedSize = used;
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79 iterated = 0;
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80 lastFrac = 0;
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81 error = false;
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82 updates = new ArrayList();
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83 }
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84
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85 public void visitAddress(Address addr) {
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86 if (error) return;
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87
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88 Address val = addr.getAddressAt(0);
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89 if (AddressOps.equal(val, value)) {
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90 error = reportResult(addr);
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91 }
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92 iterated += addressSize;
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93 updateProgressBar();
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94 }
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95
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96 public void epilogue() {
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97 iterated = 0;
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98 updateProgressBar();
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99 findButton.setEnabled(true);
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100 }
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101 };
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102
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103 findButton = new JButton("Find");
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104 ActionListener listener = new ActionListener() {
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105 public void actionPerformed(ActionEvent e) {
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106 clearResultWindow();
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107 // Parse text
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108 try {
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109 Address val = VM.getVM().getDebugger().parseAddress(addressField.getText());
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110 value = val;
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111
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112 findButton.setEnabled(false);
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113
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114 java.lang.Thread t = new java.lang.Thread(new Runnable() {
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115 public void run() {
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116 try {
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117 VM.getVM().getObjectHeap().iterateRaw(iterator);
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118 } finally {
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119 SwingUtilities.invokeLater(new Runnable() {
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120 public void run() {
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121 findButton.setEnabled(true);
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122 }
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123 });
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124 }
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125 }
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126 });
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127 t.start();
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128 } catch (Exception ex) {
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129 textArea.setText("Error parsing address");
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130 }
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131 }
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132 };
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133 panel.add(findButton);
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134 findButton.addActionListener(listener);
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135 addressField.addActionListener(listener);
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136 topPanel.add(panel);
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137
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138 progressBar = new ProgressBarPanel(ProgressBarPanel.HORIZONTAL, "Search progress:");
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139 topPanel.add(progressBar);
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140
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141 add(topPanel, BorderLayout.NORTH);
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142
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143 textArea = new JTextArea();
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144 JScrollPane scroller = new JScrollPane(textArea);
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145 add(scroller, BorderLayout.CENTER);
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146 }
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147
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148 private boolean pendingUpdate = false;
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149
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150 private boolean reportResult(final Address addr) {
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151 synchronized (this) {
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152 try {
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153 updates.add("found at " + addr + "\n");
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154 if (!pendingUpdate) {
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155 pendingUpdate = true;
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156 SwingUtilities.invokeLater(new Runnable() {
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157 public void run() {
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158 updateResultWindow();
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159 }
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160 });
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161 }
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162 } catch (Throwable t) {
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163 t.printStackTrace();
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164 return true;
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165 }
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166 }
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167
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168 return false;
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169 }
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170
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171 private void clearResultWindow() {
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172 SwingUtilities.invokeLater(new Runnable() {
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173 public void run() {
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174
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175 Document d = textArea.getDocument();
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176 try {
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177 d.remove(0, d.getLength());
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178 } catch (BadLocationException e) {
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179 }
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180 }
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181 });
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182 }
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183
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184 private synchronized void updateResultWindow() {
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185 if (updates.size() > 0) {
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186 Iterator i = updates.iterator();
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187 while (i.hasNext()) {
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188 textArea.append((String)i.next());
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189 }
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190 updates = new ArrayList();;
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191 }
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192 pendingUpdate = false;
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193 }
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194
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195 private void invokeInDispatchThread(Runnable runnable) {
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196 if (EventQueue.isDispatchThread()) {
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197 runnable.run();
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198 } else {
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199 SwingUtilities.invokeLater(runnable);
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200 }
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201 }
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202
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203 private void updateProgressBar() {
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204 final double frac = (double) iterated / (double) usedSize;
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205 if (frac == 0.0 || (frac - lastFrac > minUpdateFraction)) {
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206 lastFrac = frac;
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207 if (iterated > usedSize) {
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208 System.out.println("iterated " + iterated + " usedSize " + usedSize);
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209 }
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210 SwingUtilities.invokeLater(new Runnable() {
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211 public void run() {
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212 progressBar.setValue(frac);
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213 }
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214 });
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215 }
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216 }
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217 }
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