/*
* @(#)MemoryMonitor.java 1.27 99/11/05
*
* Copyright (c) 1998, 1999 by Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/
package ch.randelshofer.debug;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.util.Date;
import javax.swing.*;
import javax.swing.border.EtchedBorder;
import javax.swing.border.TitledBorder;
/**
* Tracks Memory allocated & used, displayed in graph form.
*/
public class MemoryMonitor extends JPanel {
static JCheckBox dateStampCB = new JCheckBox("Output Date Stamp");
public Surface surf;
JPanel controls;
boolean doControls;
JTextField tf;
public MemoryMonitor() {
initComponents();
//setLayout(new BorderLayout());
add(surf = new Surface(), BorderLayout.CENTER);
/*
controls = new JPanel();
controls.setPreferredSize(new Dimension(135,80));
//Font font = new Font("serif", Font.PLAIN, 10);
Font font = new Font("Dialog", Font.PLAIN, 10);
JLabel label = new JLabel("Sample Rate");
label.setFont(font);
label.setForeground(Color.red);
controls.add(label);
tf = new JTextField("1000");
tf.setPreferredSize(new Dimension(45,20));
controls.add(tf);
controls.add(label = new JLabel("ms"));
label.setFont(font);
label.setForeground(Color.red);
controls.add(dateStampCB);
dateStampCB.setFont(font);
MouseListener ml = new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
if (doControls = !doControls) {
remove(surf);
add(controls, BorderLayout.CENTER);
tf.requestFocus();
} else {
remove(controls);
try {
surf.sleepAmount = Long.parseLong(tf.getText().trim());
} catch (Exception ex) {}
add(surf, BorderLayout.CENTER);
}
invalidate();
validate();
repaint();
}
};
addMouseListener(ml);
controls.addMouseListener(ml);
*/
}
public void start() {
surf.start();
}
public void stop() {
surf.stop();
}
public class Surface extends JPanel implements Runnable {
public Thread thread;
public long sleepAmount = 1000;
private int w, h;
private BufferedImage bimg;
private Graphics2D big;
//private Font font = new Font("Times New Roman", Font.PLAIN, 11);
private Font font = new Font("Dialog", Font.PLAIN, 11);
private Runtime r = Runtime.getRuntime();
private int columnInc;
private int pts[];
private int tpts[];
private int ptNum;
private int ascent, descent;
private float freeMemory, totalMemory;
private Rectangle graphOutlineRect = new Rectangle();
private Rectangle2D mfRect = new Rectangle2D.Float();
private Rectangle2D muRect = new Rectangle2D.Float();
private Line2D graphLine = new Line2D.Float();
private Color graphColor = new Color(46, 139, 87);
private Color mfColor = new Color(0, 100, 0);
private String usedStr;
private float oldTotalMemory = -1;
public Surface() {
setBackground(Color.black);
addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
if (thread == null) start(); else stop();
}
});
}
public Dimension getMinimumSize() {
return getPreferredSize();
}
public Dimension getMaximumSize() {
return getPreferredSize();
}
public Dimension getPreferredSize() {
return new Dimension(135,80);
}
public void setSize(int width, int height) {
super.setSize(width, height);
// clear graph
ptNum = 0;
}
public void setBounds(int x, int y, int width, int height) {
super.setBounds(x, y, width, height);
// clear graph
ptNum = 0;
}
public void paint(Graphics g) {
if (big == null) {
return;
}
big.setBackground(getBackground());
big.clearRect(0,0,w,h);
float freeMemory = (float) r.freeMemory();
float totalMemory = (float) r.totalMemory();
// .. Draw allocated and used strings ..
big.setColor(Color.green);
big.drawString(String.valueOf((int) totalMemory/1024) + "K allocated", 4.0f, (float) ascent+0.5f);
usedStr = String.valueOf(((int) (totalMemory - freeMemory))/1024)
+ "K used";
big.drawString(usedStr, 4, h-descent);
// Calculate remaining size
float ssH = ascent + descent;
float remainingHeight = (float) (h - (ssH*2) - 0.5f);
float blockHeight = remainingHeight/10;
float blockWidth = 20.0f;
float remainingWidth = (float) (w - blockWidth - 10);
// .. Memory Free ..
big.setColor(mfColor);
int MemUsage = (int) ((freeMemory / totalMemory) * 10);
int i = 0;
for ( ; i < MemUsage ; i++) {
mfRect.setRect(5,(float) ssH+i*blockHeight,
blockWidth,(float) blockHeight-1);
big.fill(mfRect);
}
// .. Memory Used ..
big.setColor(Color.green);
for ( ; i < 10; i++) {
muRect.setRect(5,(float) ssH+i*blockHeight,
blockWidth,(float) blockHeight-1);
big.fill(muRect);
}
// .. Draw History Graph ..
big.setColor(graphColor);
int graphX = 30;
int graphY = (int) ssH;
int graphW = w - graphX - 5;
int graphH = (int) remainingHeight;
graphOutlineRect.setRect(graphX, graphY, graphW, graphH);
big.draw(graphOutlineRect);
// .. Draw row ..
for (int j = 1; j < 10; j++) {
float graphRow = graphY + graphH / 10f*j;
graphLine.setLine(graphX,graphRow,graphX+graphW,graphRow);
big.draw(graphLine);
}
// .. Draw animated column movement ..
int graphColumn = graphW/15;
if (columnInc == 0) {
columnInc = graphColumn;
}
for (int j = graphX+columnInc; j < graphW+graphX; j+=graphColumn) {
graphLine.setLine(j,graphY,j,graphY+graphH);
big.draw(graphLine);
}
--columnInc;
// rescale graph if total memory has changed
if (oldTotalMemory != totalMemory) {
if (oldTotalMemory > 0 && pts != null) {
for (i=0; i < ptNum; i++) {
pts[i] = graphY+graphH-(int)((graphY+graphH-pts[i])*(oldTotalMemory/totalMemory));
tpts[i] = graphY+graphH-(int)((graphY+graphH-tpts[i])*(oldTotalMemory/totalMemory));
}
}
oldTotalMemory = totalMemory;
}
// Alloc array if there arent any points
if (pts == null) {
pts = new int[graphW];
tpts = new int[graphW];
ptNum = 0;
// Resize array if window width has changed
} else if (pts.length != graphW) {
int tmp[] = null;
int tmp2[] = null;
if (ptNum < graphW) {
tmp = new int[ptNum];
tmp2 = new int[ptNum];
System.arraycopy(pts, 0, tmp, 0, tmp.length);
System.arraycopy(tpts, 0, tmp2, 0, tmp2.length);
} else {
tmp = new int[graphW];
tmp2 = new int[graphW];
System.arraycopy(pts, pts.length-tmp.length, tmp, 0, tmp.length);
System.arraycopy(tpts, tpts.length-tmp2.length, tmp2, 0, tmp2.length);
ptNum = tmp.length - 2;
}
pts = new int[graphW];
tpts = new int[graphW];
System.arraycopy(tmp, 0, pts, 0, tmp.length);
System.arraycopy(tmp, 0, tpts, 0, tmp2.length);
// draw data
} else {
tpts[ptNum] = graphY;
pts[ptNum] = (int)(graphY+graphH*(freeMemory/totalMemory));
// draw the total memory graph
big.setColor(Color.green);
for (int j=graphX+graphW-ptNum, k=0;k < ptNum; k++, j++) {
if (k != 0) {
if (tpts[k] != tpts[k-1]) {
big.drawLine(j-1, tpts[k-1], j, tpts[k]);
} else {
big.fillRect(j, tpts[k], 1, 1);
}
}
}
// draw the used memory graph
big.setColor(Color.yellow);
for (int j=graphX+graphW-ptNum, k=0;k < ptNum; k++, j++) {
if (k != 0) {
if (pts[k] != pts[k-1]) {
big.drawLine(j-1, pts[k-1], j, pts[k]);
} else {
big.fillRect(j, pts[k], 1, 1);
}
}
}
if (ptNum+2 == pts.length) {
// throw out oldest point
/*
for (int j = 1;j < ptNum; j++) {
pts[j-1] = pts[j];
tpts[j-1] = tpts[j];
}
--ptNum;
*/
System.arraycopy(pts, 1, pts, 0, ptNum);
System.arraycopy(tpts, 1, tpts, 0, ptNum);
} else {
ptNum++;
}
}
g.drawImage(bimg, 0, 0, this);
}
public void start() {
thread = new Thread(this);
thread.setPriority(Thread.MIN_PRIORITY);
thread.setName("MemoryMonitor");
thread.start();
}
public synchronized void stop() {
thread = null;
notify();
}
public void run() {
Thread me = Thread.currentThread();
while (thread == me && !isShowing() || getSize().width == 0) {
try {
thread.sleep(500);
} catch (InterruptedException e) { return; }
}
while (thread == me && isShowing()) {
Dimension d = getSize();
if (d.width != w || d.height != h) {
w = d.width;
h = d.height;
bimg = (BufferedImage) createImage(w, h);
big = bimg.createGraphics();
big.setFont(font);
FontMetrics fm = big.getFontMetrics(font);
ascent = (int) fm.getAscent();
descent = (int) fm.getDescent();
}
repaint();
try {
thread.sleep(sleepAmount);
} catch (InterruptedException e) { break; }
if (MemoryMonitor.dateStampCB.isSelected()) {
System.out.println(new Date().toString() + " " + usedStr);
}
}
thread = null;
}
}
public static void main(String s[]) {
final MemoryMonitor demo = new MemoryMonitor();
WindowListener l = new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}
public void windowDeiconified(WindowEvent e) { demo.surf.start(); }
public void windowIconified(WindowEvent e) { demo.surf.stop(); }
};
JFrame f = new JFrame("Java2D Demo - MemoryMonitor");
f.addWindowListener(l);
f.getContentPane().add("Center", demo);
f.pack();
f.setSize(new Dimension(200,200));
f.setVisible(true);
demo.surf.start();
}
/** 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.
*/
private void initComponents() {//GEN-BEGIN:initComponents
jPanel1 = new javax.swing.JPanel();
gcButton = new javax.swing.JButton();
setLayout(new java.awt.BorderLayout());
jPanel1.setLayout(new java.awt.FlowLayout(java.awt.FlowLayout.LEFT, 0, 5));
gcButton.setText("GC");
gcButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
gc(evt);
}
});
jPanel1.add(gcButton);
add(jPanel1, java.awt.BorderLayout.SOUTH);
}//GEN-END:initComponents
private void gc(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_gc
Runtime.getRuntime().gc();
}//GEN-LAST:event_gc
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JPanel jPanel1;
private javax.swing.JButton gcButton;
// End of variables declaration//GEN-END:variables
}