skrueger/swing/HeapBar.java

package skrueger.swing;

import java.awt.Color;
import java.awt.Graphics;
import java.util.Locale;
import java.util.Timer;
import java.util.TimerTask;

import javax.swing.JProgressBar;
import javax.swing.SwingUtilities;

import org.apache.log4j.Logger;

import schmitzm.geotools.gui.GeotoolsGUIUtil;
import schmitzm.lang.LangUtil;
import schmitzm.lang.ResourceProvider;
import schmitzm.swing.SwingUtil;
import skrueger.swing.formatter.MbDecimalFormatter;

public class HeapBar extends JProgressBar {
        private static final Logger LOGGER = Logger.getLogger(HeapBar.class);

        protected static ResourceProvider RESOURCE = new ResourceProvider(LangUtil
                        .extendPackagePath(SwingUtil.class,
                                        "resource.locales.SwingResourceBundle"), Locale.ENGLISH);

        private Timer updateTimer;
        String valueAsText = "";
        MbDecimalFormatter formatter = new MbDecimalFormatter();

        public HeapBar() {
                updateTimer = new Timer("check memory");
                updateTimer.scheduleAtFixedRate(new UpdateMemoryBarTask(), 100, 1000);

                setMinimum(0);
                setMaximum(100);

                SwingUtil.setPreferredWidth(this, 200);
        }

        @Override
        protected void paintComponent(Graphics g) {
                super.paintComponent(g);
                g.setColor(Color.black);
                g.drawString(valueAsText, 5, 12);
        }

        class UpdateMemoryBarTask extends TimerTask {

                @Override
                public void run() {

                        // Get current size of heap in bytes
                        long heapSize = Runtime.getRuntime().totalMemory();

                        // Get maximum size of heap in bytes. The heap cannot grow beyond
                        // this size.
                        // Any attempt will result in an OutOfMemoryException.
                        long heapMaxSize = Runtime.getRuntime().maxMemory();

                        // Get amount of free memory within the heap in bytes. This size
                        // will increase
                        // after garbage collection and decrease as new objects are created.
                        long heapFreeSize = Runtime.getRuntime().freeMemory();

                        long used = (heapSize - heapFreeSize);

                        int percentaUsed = (int) (used * 100 / heapMaxSize);

                        if (percentaUsed > 80)
                                LOGGER.warn(percentaUsed + "% belegt");

                        if (percentaUsed > 70) {
                                if (percentaUsed > 90)
                                        setForeground(Color.red);
                                else
                                        setForeground(Color.orange);
                        } else {
                                setForeground(Color.green);
                        }

                        setValue(percentaUsed);
                        valueAsText = RESOURCE.getString("HeapMemoryBar.status", formatter
                                        .format(used), percentaUsed, formatter.format(heapMaxSize));

                        repaint();
                }
        }
}
1	alfonx	519	package skrueger.swing;
2
3			import java.awt.Color;
4			import java.awt.Graphics;
5			import java.util.Locale;
6			import java.util.Timer;
7			import java.util.TimerTask;
8
9			import javax.swing.JProgressBar;
10			import javax.swing.SwingUtilities;
11
12			import org.apache.log4j.Logger;
13
14			import schmitzm.geotools.gui.GeotoolsGUIUtil;
15			import schmitzm.lang.LangUtil;
16			import schmitzm.lang.ResourceProvider;
17			import schmitzm.swing.SwingUtil;
18			import skrueger.swing.formatter.MbDecimalFormatter;
19
20			public class HeapBar extends JProgressBar {
21			private static final Logger LOGGER = Logger.getLogger(HeapBar.class);
22
23			protected static ResourceProvider RESOURCE = new ResourceProvider(LangUtil
24			.extendPackagePath(SwingUtil.class,
25			"resource.locales.SwingResourceBundle"), Locale.ENGLISH);
26
27			private Timer updateTimer;
28			String valueAsText = "";
29			MbDecimalFormatter formatter = new MbDecimalFormatter();
30
31			public HeapBar() {
32			updateTimer = new Timer("check memory");
33			updateTimer.scheduleAtFixedRate(new UpdateMemoryBarTask(), 100, 1000);
34
35			setMinimum(0);
36			setMaximum(100);
37
38			SwingUtil.setPreferredWidth(this, 200);
39			}
40
41			@Override
42			protected void paintComponent(Graphics g) {
43			super.paintComponent(g);
44			g.setColor(Color.black);
45			g.drawString(valueAsText, 5, 12);
46			}
47
48			class UpdateMemoryBarTask extends TimerTask {
49
50			@Override
51			public void run() {
52
53			// Get current size of heap in bytes
54			long heapSize = Runtime.getRuntime().totalMemory();
55
56			// Get maximum size of heap in bytes. The heap cannot grow beyond
57			// this size.
58			// Any attempt will result in an OutOfMemoryException.
59			long heapMaxSize = Runtime.getRuntime().maxMemory();
60
61			// Get amount of free memory within the heap in bytes. This size
62			// will increase
63			// after garbage collection and decrease as new objects are created.
64			long heapFreeSize = Runtime.getRuntime().freeMemory();
65
66			long used = (heapSize - heapFreeSize);
67
68			int percentaUsed = (int) (used * 100 / heapMaxSize);
69
70			if (percentaUsed > 80)
71			LOGGER.warn(percentaUsed + "% belegt");
72
73			if (percentaUsed > 70) {
74			if (percentaUsed > 90)
75			setForeground(Color.red);
76			else
77			setForeground(Color.orange);
78			} else {
79			setForeground(Color.green);
80			}
81
82			setValue(percentaUsed);
83			valueAsText = RESOURCE.getString("HeapMemoryBar.status", formatter
84			.format(used), percentaUsed, formatter.format(heapMaxSize));
85
86			repaint();
87			}
88			}
89			}
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