/*-
* Copyright (C) 2008 Erik Larsson
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
package org.catacombae.hfsexplorer.gui;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import org.catacombae.util.Util;
/**
* @author <a href="http://www.catacombae.org/" target="_top">Erik Larsson</a>
*/
public class MemoryStatisticsPanel extends javax.swing.JPanel {
private final Object syncObj = new Object();
private boolean abortThread = false;
public MemoryStatisticsPanel() {
initComponents();
runGcButton.addActionListener(new ActionListener() {
/* @Override */
public void actionPerformed(ActionEvent e) {
Runtime.getRuntime().gc();
}
});
}
public void startThread() {
Runnable r = new Runnable() {
/* @Override */
public void run() {
Runtime rt = Runtime.getRuntime();
synchronized(syncObj) {
while(!abortThread) {
final long curMaxMem = rt.totalMemory();
final long maxMem = rt.maxMemory();
final long freeMem = rt.freeMemory();
final long allocatedMem = curMaxMem - freeMem;
SwingUtilities.invokeLater(new Runnable() {
/* @Override */
public void run() {
allocatedMemoryField.setText(Util.addUnitSpaces("" + allocatedMem, 3) + " bytes");
freeMemoryField.setText(Util.addUnitSpaces("" + freeMem, 3) + " bytes");
currentMaxMemoryField.setText(Util.addUnitSpaces("" + curMaxMem, 3) + " bytes");
maxMemoryField.setText(Util.addUnitSpaces("" + maxMem, 3) + " bytes");
}
});
try {
syncObj.wait(500);
} catch(InterruptedException ie) {
ie.printStackTrace();
}
}
syncObj.notify();
}
System.err.println("MemoryStatisticsPanel thread aborted.");
}
};
synchronized(syncObj) {
new Thread(r).start();
}
}
public void stopThread() {
synchronized(syncObj) {
abortThread = true;
syncObj.notify();
try {
syncObj.wait();
} catch(InterruptedException ie) {
ie.printStackTrace();
}
}
}
/**
* Creates a JFrame that encloses a MemoryStatisticsPanel, properly wired to accommodate any
* window close-events and stop the thread when they happen. This is all that you need in order
* to create a window showing memory statistics. (Just call setVisible(true) on the returned
* JFrame to bring it up... it will automatically start collecting memory information.)
*
* @return a JFrame enclosing a MemoryStatisticsPanel.
*/
public static JFrame createMemoryStatisticsWindow() {
final HFSExplorerJFrame memoryStatisticsWindow =
new HFSExplorerJFrame("Memory statistics");
final MemoryStatisticsPanel msp = new MemoryStatisticsPanel();
memoryStatisticsWindow.add(msp);
memoryStatisticsWindow.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
memoryStatisticsWindow.addWindowListener(new WindowAdapter() {
@Override
public void windowOpened(WindowEvent e) {
msp.startThread();
}
@Override
public void windowClosing(WindowEvent e) {
//System.err.println("Window closing. Signaling any calculate process to stop.");
msp.stopThread();
memoryStatisticsWindow.dispose();
}
});
memoryStatisticsWindow.pack();
memoryStatisticsWindow.setLocationRelativeTo(null);
memoryStatisticsWindow.setResizable(false);
return memoryStatisticsWindow;
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
runGcButton = new javax.swing.JButton();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
allocatedMemoryField = new javax.swing.JTextField();
freeMemoryField = new javax.swing.JTextField();
currentMaxMemoryField = new javax.swing.JTextField();
maxMemoryField = new javax.swing.JTextField();
jLabel1.setText("Allocated memory:");
runGcButton.setText("Run GC");
jLabel2.setText("Free memory:");
jLabel3.setText("Current max:");
jLabel4.setText("Total max:");
allocatedMemoryField.setEditable(false);
allocatedMemoryField.setBorder(null);
allocatedMemoryField.setOpaque(false);
freeMemoryField.setEditable(false);
freeMemoryField.setBorder(null);
freeMemoryField.setOpaque(false);
currentMaxMemoryField.setEditable(false);
currentMaxMemoryField.setBorder(null);
currentMaxMemoryField.setOpaque(false);
maxMemoryField.setEditable(false);
maxMemoryField.setBorder(null);
maxMemoryField.setOpaque(false);
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jLabel1)
.add(jLabel2)
.add(jLabel3)
.add(jLabel4))
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(freeMemoryField, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 228, Short.MAX_VALUE)
.add(allocatedMemoryField, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 228, Short.MAX_VALUE)
.add(currentMaxMemoryField, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 228, Short.MAX_VALUE)
.add(maxMemoryField, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 228, Short.MAX_VALUE)))
.add(org.jdesktop.layout.GroupLayout.TRAILING, runGcButton))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jLabel1)
.add(allocatedMemoryField, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jLabel2)
.add(freeMemoryField, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jLabel3)
.add(currentMaxMemoryField, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jLabel4)
.add(maxMemoryField, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(runGcButton))
);
}// </editor-fold>//GEN-END:initComponents
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JTextField allocatedMemoryField;
private javax.swing.JTextField currentMaxMemoryField;
private javax.swing.JTextField freeMemoryField;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JTextField maxMemoryField;
private javax.swing.JButton runGcButton;
// End of variables declaration//GEN-END:variables
}