appl/parallel/SimpleResourceProperties.java

package appl.parallel;

import java.io.Serializable;
import java.lang.management.ManagementFactory;
import java.lang.management.MemoryPoolMXBean;
import java.lang.management.MemoryUsage;
import java.lang.management.ThreadMXBean;
import java.net.UnknownHostException;
import java.util.List;
import java.util.Properties;

/**
 * Sets the following properties: <br>
 * <br>
 * Maximum Java Memory <br>
 * Free Java Memory<br>
 * System Information<br>
 * System Architecture<br>
 * System Version<br>
 * Hostname<br>
 * IP<br>
 * 
 * @see ComputingResourceProperties
 * @author Dominik Appl
 */
public class SimpleResourceProperties implements ComputingResourceProperties,
                Serializable {

        protected Properties properties = new Properties();

        public SimpleResourceProperties() {
                java.net.InetAddress i;
                try {
                        i = java.net.InetAddress.getLocalHost();
                        properties.setProperty("Hostname", i.getHostName());

                        // also the DefaultName of the machine, if not specified
                        properties.setProperty("Name", i.getHostName());
                        properties.setProperty("IP", i.getHostAddress());
                } catch (UnknownHostException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                }
                properties.setProperty("Memory Maximum", ""
                                + getFormatedMemoryString(Runtime.getRuntime().maxMemory()));
                properties.setProperty("Memory Free", ""
                                + getFormatedMemoryString(Runtime.getRuntime().freeMemory()));
                properties.setProperty("Memory Used", ""
                                + getFormatedMemoryString(getUsedMemory()));
                properties.setProperty("Operating System", System
                                .getProperty("os.name"));
                properties.setProperty("System Architecture", System
                                .getProperty("os.arch"));
                properties.setProperty("System Version", System
                                .getProperty("os.version"));
                properties.setProperty("Available Processors", Runtime.getRuntime()
                                .availableProcessors()
                                + "");

        }

        /*
         * (non-Javadoc)
         * 
         * @see appl.parallel.ComputingResourceProperties#getProperties()
         */
        public Properties getProperties() {
                return properties;
        }

        protected long getUsedMemory() {
                ThreadMXBean tb = ManagementFactory.getThreadMXBean();
                List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
                long sum = 0;
                for (MemoryPoolMXBean pool : pools) {
                        MemoryUsage peak = pool.getPeakUsage();
                        sum += peak.getUsed();
                }
                return sum;
        }

        protected String getFormatedMemoryString(long bytes) {
                long mb = bytes / (1024 * 1024);
                long kb = bytes / 1024 - (mb * 1024);
                // only the first char of kb
                kb = kb / 100;
                return mb + "." + kb + " MB";

        }

        /*
         * (non-Javadoc) only indirection
         * 
         * @see appl.parallel.ComputingResourceProperties#getProperty(java.lang.String)
         */
        public String getProperty(String key) {
                return properties.getProperty(key);
        }

        /*
         * (non-Javadoc) only indirection
         * 
         * @see appl.parallel.ComputingResourceProperties#setProperty(java.lang.String,
         *      java.lang.String)
         */
        public void setProperty(String key, String value) {
                properties.setProperty(key, value);
        }

        public String toString() {
                return getProperty("Name");
        }

        /*
         * (non-Javadoc)
         * 
         * @see appl.parallel.ComputingResourceProperties#getName()
         */
        public String getName() {
                return getProperty("Name");
        }

        public boolean isAvailable() {
                return getProperty("isAvailable").equals("true");
        }

        public String getIP() {
                return getProperty("IP");
        }

        public String getPort() {
                return getProperty("Port");
        }
}
1	mojays	2	package appl.parallel;
2
3			import java.io.Serializable;
4			import java.lang.management.ManagementFactory;
5			import java.lang.management.MemoryPoolMXBean;
6			import java.lang.management.MemoryUsage;
7			import java.lang.management.ThreadMXBean;
8			import java.net.UnknownHostException;
9			import java.util.List;
10			import java.util.Properties;
11
12			/**
13			* Sets the following properties: <br>
14			* <br>
15			* Maximum Java Memory <br>
16			* Free Java Memory<br>
17			* System Information<br>
18			* System Architecture<br>
19			* System Version<br>
20			* Hostname<br>
21			* IP<br>
22			*
23			* @see ComputingResourceProperties
24			* @author Dominik Appl
25			*/
26			public class SimpleResourceProperties implements ComputingResourceProperties,
27			Serializable {
28
29			protected Properties properties = new Properties();
30
31			public SimpleResourceProperties() {
32			java.net.InetAddress i;
33			try {
34			i = java.net.InetAddress.getLocalHost();
35			properties.setProperty("Hostname", i.getHostName());
36
37			// also the DefaultName of the machine, if not specified
38			properties.setProperty("Name", i.getHostName());
39			properties.setProperty("IP", i.getHostAddress());
40			} catch (UnknownHostException e) {
41			// TODO Auto-generated catch block
42			e.printStackTrace();
43			}
44			properties.setProperty("Memory Maximum", ""
45			+ getFormatedMemoryString(Runtime.getRuntime().maxMemory()));
46			properties.setProperty("Memory Free", ""
47			+ getFormatedMemoryString(Runtime.getRuntime().freeMemory()));
48			properties.setProperty("Memory Used", ""
49			+ getFormatedMemoryString(getUsedMemory()));
50			properties.setProperty("Operating System", System
51			.getProperty("os.name"));
52			properties.setProperty("System Architecture", System
53			.getProperty("os.arch"));
54			properties.setProperty("System Version", System
55			.getProperty("os.version"));
56			properties.setProperty("Available Processors", Runtime.getRuntime()
57			.availableProcessors()
58			+ "");
59
60			}
61
62			/*
63			* (non-Javadoc)
64			*
65			* @see appl.parallel.ComputingResourceProperties#getProperties()
66			*/
67			public Properties getProperties() {
68			return properties;
69			}
70
71			protected long getUsedMemory() {
72			ThreadMXBean tb = ManagementFactory.getThreadMXBean();
73			List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
74			long sum = 0;
75			for (MemoryPoolMXBean pool : pools) {
76			MemoryUsage peak = pool.getPeakUsage();
77			sum += peak.getUsed();
78			}
79			return sum;
80			}
81
82			protected String getFormatedMemoryString(long bytes) {
83			long mb = bytes / (1024 * 1024);
84			long kb = bytes / 1024 - (mb * 1024);
85			// only the first char of kb
86			kb = kb / 100;
87			return mb + "." + kb + " MB";
88
89			}
90
91			/*
92			* (non-Javadoc) only indirection
93			*
94			* @see appl.parallel.ComputingResourceProperties#getProperty(java.lang.String)
95			*/
96			public String getProperty(String key) {
97			return properties.getProperty(key);
98			}
99
100			/*
101			* (non-Javadoc) only indirection
102			*
103			* @see appl.parallel.ComputingResourceProperties#setProperty(java.lang.String,
104			* java.lang.String)
105			*/
106			public void setProperty(String key, String value) {
107			properties.setProperty(key, value);
108			}
109
110			public String toString() {
111			return getProperty("Name");
112			}
113
114			/*
115			* (non-Javadoc)
116			*
117			* @see appl.parallel.ComputingResourceProperties#getName()
118			*/
119			public String getName() {
120			return getProperty("Name");
121			}
122
123			public boolean isAvailable() {
124			return getProperty("isAvailable").equals("true");
125			}
126
127			public String getIP() {
128			return getProperty("IP");
129			}
130
131			public String getPort() {
132			return getProperty("Port");
133			}
134			}