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	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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