JVMStatsImplpublic class JVMStatsImpl extends Object implements javax.management.j2ee.statistics.JVMStats| Provides an implementation of the JVMStats interface, defined as part
of JSR77.
It specifies the monitoring statistics for a JVM |
| Fields Summary |
|---|
| private final long | initTime | | private com.sun.enterprise.admin.monitor.stats.GenericStatsImpl | baseStatsImpl | | private com.sun.enterprise.admin.monitor.stats.MutableCountStatistic | uptime | | private com.sun.enterprise.admin.monitor.stats.MutableBoundedRangeStatisticImpl | heapSize | | private static final String | STATS_INTERFACE_NAME | | private static com.sun.enterprise.util.i18n.StringManager | sm |
| Constructors Summary |
|---|
public JVMStatsImpl()Constructor for JVMStatsImpl
In addition to initializing the MutableStatistic objects, we also
instantiate a GenericStatsImpl object here. All requests for
getStatistics(), getStatistic() & getStatisticNames() are
delegated to this instance of GenericStatsImpl.
initTime = System.currentTimeMillis();
try {
baseStatsImpl = new GenericStatsImpl(STATS_INTERFACE_NAME, this);
}catch(ClassNotFoundException cnfe){
// TODO: Handle ClassNotFoundException
}
// Initialize a MutableCountStatistic
CountStatistic u = new CountStatisticImpl(
sm.getString("jvmstats.jvm_uptime"),
sm.getString("jvmstats.milli_seconds"),
sm.getString("jvmstats.jvm_uptime_desc") );
uptime = new MutableCountStatisticImpl(u);
// Initialize a MutableBoundedRangeStatistic
long upper = Runtime.getRuntime().maxMemory();
BoundedRangeStatistic h = new BoundedRangeStatisticImpl(
sm.getString("jvmstats.jvm_heapsize"),
sm.getString("jvmstats.bytes"),
sm.getString("jvmstats.jvm_heapsize_desc"),
0, upper, 0);
heapSize = new MutableBoundedRangeStatisticImpl(h);
|
| Methods Summary |
|---|
| public javax.management.j2ee.statistics.BoundedRangeStatistic | getHeapSize()Method to query the size of the JVM's heap
long heap = Runtime.getRuntime().totalMemory();
heapSize.setCount(heap);
return (BoundedRangeStatistic) heapSize.unmodifiableView();
| | public javax.management.j2ee.statistics.Statistic | getStatistic(java.lang.String str)queries for a Statistic by name.
return baseStatsImpl.getStatistic(str);
| | public java.lang.String[] | getStatisticNames()returns an array of names of all the Statistics, that can be
retrieved from this implementation of Stats
return baseStatsImpl.getStatisticNames();
| | public javax.management.j2ee.statistics.Statistic[] | getStatistics()This method can be used to retrieve all the Statistics, exposed
by this implementation of Stats
return baseStatsImpl.getStatistics();
| | public javax.management.j2ee.statistics.CountStatistic | getUpTime()Method to query the amount of time that the JVM has been running
long curTime = System.currentTimeMillis();
long upTime = curTime - initTime;
uptime.setCount(upTime);
return (CountStatistic) uptime.unmodifiableView();
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