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/*
* Copyright 2002-2004 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
package sun.jvm.hotspot.ui;
import java.util.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.oops.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.utilities.*;
/** Finds a given (Address) value in the heap. Only intended for use
in a debugging system. */
public class FindInHeapPanel extends JPanel {
private RawHeapVisitor iterator;
private long addressSize;
private long usedSize;
private long iterated;
private Address value;
private ProgressBarPanel progressBar;
private HistoryComboBox addressField;
private JButton findButton;
private JTextArea textArea;
private ArrayList updates;
private double lastFrac;
static final double minUpdateFraction = 0.05;
public FindInHeapPanel() {
super();
setLayout(new BorderLayout());
JPanel topPanel = new JPanel();
topPanel.setLayout(new BoxLayout(topPanel, BoxLayout.Y_AXIS));
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS));
panel.add(new JLabel("Address to search for:"));
addressField = new HistoryComboBox();
panel.add(addressField);
addressSize = VM.getVM().getAddressSize();
iterator = new RawHeapVisitor() {
boolean error = false;
public void prologue(long used) {
usedSize = used;
iterated = 0;
lastFrac = 0;
error = false;
updates = new ArrayList();
}
public void visitAddress(Address addr) {
if (error) return;
Address val = addr.getAddressAt(0);
if (AddressOps.equal(val, value)) {
error = reportResult(addr);
}
iterated += addressSize;
updateProgressBar();
}
public void visitCompOopAddress(Address addr) {
if (error) return;
Address val = addr.getCompOopAddressAt(0);
if (AddressOps.equal(val, value)) {
error = reportResult(addr);
}
iterated += addressSize;
updateProgressBar();
}
public void epilogue() {
iterated = 0;
updateProgressBar();
findButton.setEnabled(true);
}
};
findButton = new JButton("Find");
ActionListener listener = new ActionListener() {
public void actionPerformed(ActionEvent e) {
clearResultWindow();
// Parse text
try {
Address val = VM.getVM().getDebugger().parseAddress(addressField.getText());
value = val;
findButton.setEnabled(false);
java.lang.Thread t = new java.lang.Thread(new Runnable() {
public void run() {
try {
VM.getVM().getObjectHeap().iterateRaw(iterator);
} finally {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
findButton.setEnabled(true);
}
});
}
}
});
t.start();
} catch (Exception ex) {
textArea.setText("Error parsing address");
}
}
};
panel.add(findButton);
findButton.addActionListener(listener);
addressField.addActionListener(listener);
topPanel.add(panel);
progressBar = new ProgressBarPanel(ProgressBarPanel.HORIZONTAL, "Search progress:");
topPanel.add(progressBar);
add(topPanel, BorderLayout.NORTH);
textArea = new JTextArea();
JScrollPane scroller = new JScrollPane(textArea);
add(scroller, BorderLayout.CENTER);
}
private boolean pendingUpdate = false;
private boolean reportResult(final Address addr) {
synchronized (this) {
try {
updates.add("found at " + addr + "\n");
if (!pendingUpdate) {
pendingUpdate = true;
SwingUtilities.invokeLater(new Runnable() {
public void run() {
updateResultWindow();
}
});
}
} catch (Throwable t) {
t.printStackTrace();
return true;
}
}
return false;
}
private void clearResultWindow() {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
Document d = textArea.getDocument();
try {
d.remove(0, d.getLength());
} catch (BadLocationException e) {
}
}
});
}
private synchronized void updateResultWindow() {
if (updates.size() > 0) {
Iterator i = updates.iterator();
while (i.hasNext()) {
textArea.append((String)i.next());
}
updates = new ArrayList();;
}
pendingUpdate = false;
}
private void invokeInDispatchThread(Runnable runnable) {
if (EventQueue.isDispatchThread()) {
runnable.run();
} else {
SwingUtilities.invokeLater(runnable);
}
}
private void updateProgressBar() {
final double frac = (double) iterated / (double) usedSize;
if (frac == 0.0 || (frac - lastFrac > minUpdateFraction)) {
lastFrac = frac;
if (iterated > usedSize) {
System.out.println("iterated " + iterated + " usedSize " + usedSize);
}
SwingUtilities.invokeLater(new Runnable() {
public void run() {
progressBar.setValue(frac);
}
});
}
}
}
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