org.droolsassert.util

Class PerfStat

java.lang.Object

org.droolsassert.util.PerfStat

public class PerfStat
extends Object

Performance statistic per domain. Exposed via MBean server to monitor in real-time.

 private PerfStat methodPerf = new PerfStat("business.domain.method") 
 ...
 
     public void myMethod() {
         methodPerf.start();
         ...
         methodPerf.stop();
     }
 }
 

See Also:

start(), stop(), getPerfStat(), StopWatch

Field Summary

Fields

Modifier and Type	Field and Description
static long	AGGREGATION_PERIOD_MS
static String	DOMAIN

Constructor Summary

Constructors

Constructor and Description
PerfStat(String domain)
PerfStat(String domain, long aggregationPeriodMs)

Method Summary

Modifier and Type	Method and Description
protected void	finalize()
static TreeMap<String,StatImpl>	getPerfStat() Performance statistic for all domains
static Stat	getPerfStat(String domain) Performance statistic for domain
Stat	getStat()
org.apache.commons.lang3.time.StopWatch	getStopWatch()
static void	merge(Map<String,StatImpl> rhsStats) You may want to merge performance statistic from other JVMs
void	reset() Reset statistic
static void	resetAll() Reset statistic for all domains
PerfStat	start() Start to measure execution time for current thread. Reset sample (period) values if aggregation time threshold passed over.
long	stop() Stop to measure execution time for current thread, update performance statistic for the domain. If stop was not executed for some reason and then start will be called again by the same thread then current leap will be counted as failed.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

DOMAIN

public static final String DOMAIN

AGGREGATION_PERIOD_MS

public static final long AGGREGATION_PERIOD_MS

Constructor Detail

PerfStat

public PerfStat(String domain)

PerfStat

public PerfStat(String domain,
                long aggregationPeriodMs)

Method Detail

getPerfStat

public static Stat getPerfStat(String domain)

Performance statistic for domain

Parameters:

domain -

getPerfStat

public static TreeMap<String,StatImpl> getPerfStat()

Performance statistic for all domains

merge

public static void merge(Map<String,StatImpl> rhsStats)

You may want to merge performance statistic from other JVMs

resetAll

public static void resetAll()

Reset statistic for all domains

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable

start

public PerfStat start()

Start to measure execution time for current thread.
Reset sample (period) values if aggregation time threshold passed over.

stop

public long stop()

Stop to measure execution time for current thread, update performance statistic for the domain.
If stop was not executed for some reason and then start will be called again by the same thread then current leap will be counted as failed.

reset

public void reset()

Reset statistic

getStopWatch

public org.apache.commons.lang3.time.StopWatch getStopWatch()

getStat

public Stat getStat()

toString

public String toString()

Overrides:

toString in class Object