/*
JPC: An x86 PC Hardware Emulator for a pure Java Virtual Machine
Release Version 2.4
A project from the Physics Dept, The University of Oxford
Copyright (C) 2007-2010 The University of Oxford
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as published by
the Free Software Foundation.
This program 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 for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Details (including contact information) can be found at:
jpc.sourceforge.net
or the developer website
sourceforge.net/projects/jpc/
Conceived and Developed by:
Rhys Newman, Ian Preston, Chris Dennis
End of licence header
*/
package org.jpc.debugger;
import java.util.*;
import java.awt.Dimension;
import java.awt.event.*;
import java.util.logging.*;
import javax.swing.*;
import org.jpc.debugger.util.*;
import org.jpc.emulator.memory.AddressSpace;
import org.jpc.emulator.execution.codeblock.CodeBlock;
import org.jpc.emulator.execution.decoder.*;
public class CodeBlockFrequencyFrame extends UtilityFrame implements PCListener, ActionListener, CodeBlockListener, Comparator
{
private static final Logger LOGGING = Logger.getLogger(CodeBlockFrequencyFrame.class.getName());
private CodeBlockRecord record;
private Map<String, OpcodeEntry> frequencies;
private OpcodeEntry[] frequentCodes;
private FrequencyModel model;
public CodeBlockFrequencyFrame()
{
super("CodeBlock Frequencies");
frequencies = new HashMap<String, OpcodeEntry>();
record = null;
frequentCodes = new OpcodeEntry[1000];
setPreferredSize(new Dimension(600, 400));
JPC.getInstance().objects().addObject(this);
model = new FrequencyModel();
JTable table = new JTable(model);
model.setupColumnWidths(table);
add("Center", new JScrollPane(table));
}
class OpcodeEntry
{
int frequency;
String opName;
OpcodeEntry(String name, CodeBlock b)
{
frequency = 0;
opName = name;
}
public int hashCode()
{
return opName.hashCode();
}
public boolean equals(Object obj)
{
OpcodeEntry e = (OpcodeEntry) obj;
if (!e.opName.equals(opName))
return false;
return true;
}
public String toString()
{
return opName;
}
}
public void actionPerformed(ActionEvent evt) {}
public void codeBlockDecoded(int address, AddressSpace memory, CodeBlock block) {}
public synchronized void codeBlockExecuted(int address, AddressSpace memory, CodeBlock block)
{
try
{
Instruction current = block.getInstructions();
for (; current != null; current = current.next)
{
String currentName = current.getGeneralClassName(true, true);
OpcodeEntry e = frequencies.get(currentName);
if (e == null)
{
e = new OpcodeEntry(currentName, block);
frequencies.put(currentName, e);
}
e.frequency++;
}
}
catch (Exception e)
{
LOGGING.log(Level.WARNING, "Error calculating freuqency of block: " + block,e);
}
}
public synchronized void frameClosed()
{
JPC.getInstance().objects().removeObject(this);
if (record != null)
record.setCodeBlockListener(null);
}
public void pcCreated()
{
refreshDetails();
}
public void pcDisposed()
{
record = null;
model.fireTableDataChanged();
}
public void executionStarted() {}
public void executionStopped()
{
refreshDetails();
}
public int compare(Object o1, Object o2)
{
if (o1 == null)
{
if (o2 == null)
return 0;
else
return 1;
}
else if (o2 == null)
return -1;
OpcodeEntry e1 = (OpcodeEntry) o1;
OpcodeEntry e2 = (OpcodeEntry) o2;
return e2.frequency - e1.frequency;
}
public synchronized void refreshDetails()
{
CodeBlockRecord r = (CodeBlockRecord) JPC.getObject(CodeBlockRecord.class);
if (r != record)
{
if (record != null)
record.setCodeBlockListener(null);
record = r;
record.setCodeBlockListener(this);
frequencies = new HashMap();
}
Object[] buffer = frequencies.values().toArray();
Arrays.sort(buffer, this);
Arrays.fill(frequentCodes, null);
int limit = Math.min(buffer.length, frequentCodes.length);
System.arraycopy(buffer, 0, frequentCodes, 0, limit);
model.fireTableDataChanged();
}
class FrequencyModel extends BasicTableModel
{
FrequencyModel()
{
super(new String[]{"Rank", "Opcode", "Frequency"}, new int[]{80, 200, 80});
}
public int getRowCount()
{
return frequentCodes.length;
}
public Object getValueAt(int row, int column)
{
OpcodeEntry e = frequentCodes[row];
if (e == null)
return null;
switch (column)
{
case 0:
return Integer.valueOf(row);
case 1:
return e.toString();
case 2:
return Integer.valueOf(e.frequency);
}
return null;
}
}
}