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	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	}