skrueger/swing/HeapBar.java

package skrueger.swing;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Locale;
import java.util.Timer;
import java.util.TimerTask;

import javax.swing.JProgressBar;

import org.apache.log4j.Logger;

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(), 1000, 5000);

                setMinimum(0);
                setMaximum(100);

                SwingUtil.setPreferredWidth(this, 200);
                
                // Clicking the bar triggers a GC
                addMouseListener( new MouseAdapter() {
                        @Override
                        public void mouseClicked(MouseEvent e) {
                                LangUtil.gcTotal();
                        }
                });
        }

        @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	alfonx	546	import java.awt.event.MouseAdapter;
6			import java.awt.event.MouseEvent;
7	alfonx	519	import java.util.Locale;
8			import java.util.Timer;
9			import java.util.TimerTask;
10
11			import javax.swing.JProgressBar;
12
13			import org.apache.log4j.Logger;
14
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	alfonx	674	updateTimer.scheduleAtFixedRate(new UpdateMemoryBarTask(), 1000, 5000);
34	alfonx	519
35			setMinimum(0);
36			setMaximum(100);
37
38			SwingUtil.setPreferredWidth(this, 200);
39	alfonx	546
40			// Clicking the bar triggers a GC
41			addMouseListener( new MouseAdapter() {
42			@Override
43			public void mouseClicked(MouseEvent e) {
44			LangUtil.gcTotal();
45			}
46			});
47	alfonx	519	}
48
49			@Override
50			protected void paintComponent(Graphics g) {
51			super.paintComponent(g);
52			g.setColor(Color.black);
53			g.drawString(valueAsText, 5, 12);
54			}
55
56			class UpdateMemoryBarTask extends TimerTask {
57
58			@Override
59			public void run() {
60
61			// Get current size of heap in bytes
62			long heapSize = Runtime.getRuntime().totalMemory();
63
64			// Get maximum size of heap in bytes. The heap cannot grow beyond
65			// this size.
66			// Any attempt will result in an OutOfMemoryException.
67			long heapMaxSize = Runtime.getRuntime().maxMemory();
68
69			// Get amount of free memory within the heap in bytes. This size
70			// will increase
71			// after garbage collection and decrease as new objects are created.
72			long heapFreeSize = Runtime.getRuntime().freeMemory();
73
74			long used = (heapSize - heapFreeSize);
75
76			int percentaUsed = (int) (used * 100 / heapMaxSize);
77
78			if (percentaUsed > 80)
79			LOGGER.warn(percentaUsed + "% belegt");
80
81			if (percentaUsed > 70) {
82			if (percentaUsed > 90)
83			setForeground(Color.red);
84			else
85			setForeground(Color.orange);
86			} else {
87			setForeground(Color.green);
88			}
89
90			setValue(percentaUsed);
91			valueAsText = RESOURCE.getString("HeapMemoryBar.status", formatter
92			.format(used), percentaUsed, formatter.format(heapMaxSize));
93
94			repaint();
95			}
96			}
97			}
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