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package com.sun.enterprise.admin.monitor.stats.spi;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadMXBean;
import javax.management.j2ee.statistics.Statistic;
import javax.management.j2ee.statistics.CountStatistic;
import com.sun.enterprise.admin.monitor.stats.JVMThreadStats;
import com.sun.enterprise.admin.monitor.stats.MutableCountStatistic;
import com.sun.enterprise.admin.monitor.stats.MutableCountStatisticImpl;
import com.sun.enterprise.admin.monitor.stats.GenericStatsImpl;
import com.sun.enterprise.admin.monitor.stats.CountStatisticImpl;
import com.sun.enterprise.admin.monitor.stats.StringStatistic;
import com.sun.enterprise.admin.monitor.stats.StringStatisticImpl;
import com.sun.enterprise.admin.monitor.stats.StatisticImpl;
import com.sun.enterprise.util.i18n.StringManager;
public class JVMThreadStatsImpl implements JVMThreadStats {
private GenericStatsImpl baseStatsImpl;
private static final String STATS_INTERFACE_NAME =
"com.sun.enterprise.admin.monitor.stats.JVMThreadStats";
private ThreadMXBean bean;
private MutableCountStatistic curThreadCpuTime;
private MutableCountStatistic daemonThreadCount;
private MutableCountStatistic peakThreadCount;
private MutableCountStatistic threadCount;
private MutableCountStatistic totalStartedThreadCount;
final long initTime;
static String DELIMITER = ",";
private static final StringManager localStrMgr =
StringManager.getManager(JVMThreadStatsImpl.class);
/** Creates a new instance of JVMThreadStatsImpl */
public JVMThreadStatsImpl() {
initTime = System.currentTimeMillis ();
try {
baseStatsImpl = new GenericStatsImpl(STATS_INTERFACE_NAME, this);
} catch(Exception e) {
}
bean = ManagementFactory.getThreadMXBean();
// initialize all the MutableStatistic Classes
initializeStatistics();
}
public StringStatistic getAllThreadIds() {
long[] ids = bean.getAllThreadIds();
String idString = new String();
for(int i = 0; i < ids.length; i++)
{
idString = idString.concat(String.valueOf(ids[i]));
idString = idString.concat(DELIMITER);
}
return new StringStatisticImpl(idString,
localStrMgr.getString("monitor.stats.live_threads"),
localStrMgr.getString("monitor.stats.string_units"),
localStrMgr.getString("monitor.stats.live_threads_desc"),
initTime,
System.currentTimeMillis());
}
public CountStatistic getCurrentThreadCPUTime() {
curThreadCpuTime.setCount(bean.getCurrentThreadCpuTime());
return (CountStatistic) curThreadCpuTime.unmodifiableView ();
}
public CountStatistic getDaemonThreadCount() {
daemonThreadCount.setCount(bean.getDaemonThreadCount());
return (CountStatistic) daemonThreadCount.unmodifiableView();
}
public StringStatistic getMonitorDeadlockedThreads() {
long[] ids = bean.findMonitorDeadlockedThreads();
String idString = new String();
if(ids != null) {
for(int i = 0; i < ids.length; i++) {
idString = idString.concat(String.valueOf(ids[i]));
idString = idString.concat(DELIMITER);
}
}
if((ids == null) || (ids.length == 0)) {
idString = idString.concat(
localStrMgr.getString("monitor.stats.no_thread_deadlock"));
}
return new StringStatisticImpl(idString,
localStrMgr.getString("monitor.stats.dlocked_threads"),
localStrMgr.getString("monitor.stats.string_units"),
localStrMgr.getString("monitor.stats.dlocked_threads_desc"),
initTime,
System.currentTimeMillis());
}
public CountStatistic getPeakThreadCount() {
peakThreadCount.setCount(bean.getPeakThreadCount());
return (CountStatistic) peakThreadCount.unmodifiableView();
}
public CountStatistic getThreadCount() {
threadCount.setCount(bean.getThreadCount());
return (CountStatistic) threadCount.unmodifiableView();
}
public CountStatistic getTotalStartedThreadCount() {
totalStartedThreadCount.setCount(bean.getTotalStartedThreadCount());
return (CountStatistic) totalStartedThreadCount.unmodifiableView();
}
/**
* This method can be used to retrieve all the Statistics, exposed
* by this implementation of Stats
* @return Statistic[]
*/
public Statistic[] getStatistics() {
return baseStatsImpl.getStatistics();
}
/**
* queries for a Statistic by name.
* @return Statistic
*/
public Statistic getStatistic(String str) {
return baseStatsImpl.getStatistic(str);
}
/**
* returns an array of names of all the Statistics, that can be
* retrieved from this implementation of Stats
* @return String[]
*/
public String[] getStatisticNames() {
return baseStatsImpl.getStatisticNames();
}
private void initializeStatistics() {
// Initialize the MutableCountStatistic for CurrentThreadCpuTime
CountStatistic c = new CountStatisticImpl(
localStrMgr.getString("thread_cpu_time"),
localStrMgr.getString("monitor.stats.nano_sec_units"),
localStrMgr.getString("thread_cpu_time_desc"));
curThreadCpuTime = new MutableCountStatisticImpl(c);
// Initialize the MutableCountStatistic for DaemonThreadCount
c= new CountStatisticImpl(
localStrMgr.getString("monitor.stats.daemon_thread_count"),
StatisticImpl.DEFAULT_UNIT,
localStrMgr.getString("monitor.stats.daemon_thread_count_desc"));
daemonThreadCount = new MutableCountStatisticImpl(c);
// Initialize the MutableCountStatistic for PeakThreadCount
c = new CountStatisticImpl(
localStrMgr.getString("monitor.stats.peak_thread_count"),
StatisticImpl.DEFAULT_UNIT,
localStrMgr.getString("monitor.stats.peak_thread_count_desc"));
peakThreadCount = new MutableCountStatisticImpl(c);
// Initialize the MutableCountStatistic for ThreadCount
c = new CountStatisticImpl(
localStrMgr.getString("monitor.stats.thread_count"),
StatisticImpl.DEFAULT_UNIT,
localStrMgr.getString("monitor.stats.thread_count_desc"));
threadCount = new MutableCountStatisticImpl(c);
// Initialize the MutableCountStatistic for TotalStartedThreadCount
c = new CountStatisticImpl(
localStrMgr.getString("monitor.stats.started_thread_count"),
StatisticImpl.DEFAULT_UNIT,
localStrMgr.getString("monitor.stats.started_thread_count_desc"));
totalStartedThreadCount = new MutableCountStatisticImpl(c);
}
}
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