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Java Source | 2002-09-06 | 11.4 KB | 329 lines |
- /*
- * Copyright (c) 2002 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * -Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * -Redistribution in binary form must reproduct the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the distribution.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * 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 OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT
- * OF OR RELATING TO USE, MODIFICATION OR DISTRIBUTION OF 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.
- *
- * You acknowledge that Software is not designed, licensed or intended for
- * use in the design, construction, operation or maintenance of any nuclear
- * facility.
- */
-
- /*
- * @(#)MemoryMonitor.java 1.31 02/06/13
- */
-
- package java2d;
-
- 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() {
- setLayout(new BorderLayout());
- setBorder(new TitledBorder(new EtchedBorder(), "Memory Monitor"));
- add(surf = new Surface());
- controls = new JPanel();
- controls.setPreferredSize(new Dimension(135,80));
- Font font = new Font("serif", Font.PLAIN, 10);
- JLabel label = new JLabel("Sample Rate");
- label.setFont(font);
- label.setForeground(Color.black);
- 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.black);
- controls.add(dateStampCB);
- dateStampCB.setFont(font);
- addMouseListener(new MouseAdapter() {
- public void mouseClicked(MouseEvent e) {
- removeAll();
- if ((doControls = !doControls)) {
- surf.stop();
- add(controls);
- } else {
- try {
- surf.sleepAmount = Long.parseLong(tf.getText().trim());
- } catch (Exception ex) {}
- surf.start();
- add(surf);
- }
- validate();
- repaint();
- }
- });
- }
-
-
- 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 Runtime r = Runtime.getRuntime();
- private int columnInc;
- private int pts[];
- 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;
-
-
- 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 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);
-
- int graphRow = graphH/10;
-
- // .. Draw row ..
- for (int j = graphY; j <= graphH+graphY; j += graphRow) {
- graphLine.setLine(graphX,j,graphX+graphW,j);
- 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;
-
- if (pts == null) {
- pts = new int[graphW];
- ptNum = 0;
- } else if (pts.length != graphW) {
- int tmp[] = null;
- if (ptNum < graphW) {
- tmp = new int[ptNum];
- System.arraycopy(pts, 0, tmp, 0, tmp.length);
- } else {
- tmp = new int[graphW];
- System.arraycopy(pts, pts.length-tmp.length, tmp, 0, tmp.length);
- ptNum = tmp.length - 2;
- }
- pts = new int[graphW];
- System.arraycopy(tmp, 0, pts, 0, tmp.length);
- } else {
- big.setColor(Color.yellow);
- pts[ptNum] = (int)(graphY+graphH*(freeMemory/totalMemory));
- 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];
- }
- --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();
- }
- }
-