Package org.jgroups.util

Class Profiler

java.lang.Object

org.jgroups.util.Profiler

All Implemented Interfaces:

DiagnosticsHandler.ProbeHandler

public class Profiler
extends java.lang.Object
implements DiagnosticsHandler.ProbeHandler

Wraps AverageMinMax and provides an impl of DiagnosticsHandler.ProbeHandler. Note that this class in unsynchronized and needs external synchronization.

Since:

4.0

Author:

Bela Ban

Field Summary

Fields

Modifier and Type	Field	Description
protected AverageMinMax	avg
protected java.lang.String	name
protected java.util.concurrent.TimeUnit	unit

Constructor Summary

Constructors

Constructor	Description
Profiler(java.lang.String name, java.util.concurrent.TimeUnit unit)	Creates a Profiler instance which will reply to key 'name'.

Method Summary

Modifier and Type	Method	Description
Profiler	add(long time)
double	average()
Profiler	clear()
long	count()
java.util.Map<java.lang.String,java.lang.String>	handleProbe(java.lang.String... keys)	Handles a probe.
long	max()
long	min()
java.lang.String[]	supportedKeys()	Returns a list of supported keys
java.lang.String	toString()
protected static java.lang.String	toString(java.util.concurrent.TimeUnit unit)

Methods inherited from class java.lang.Object

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

Field Detail

avg

protected final AverageMinMax avg

name

protected final java.lang.String name

unit

protected final java.util.concurrent.TimeUnit unit

Constructor Detail

Profiler

public Profiler(java.lang.String name,
                java.util.concurrent.TimeUnit unit)

Creates a Profiler instance which will reply to key 'name'.

Parameters:

name - The name under which the profiler will register itself

unit - The unit of measurement - only nanos, micros and millis are supported

Method Detail

add

public Profiler add(long time)

min

public long min()

max

public long max()

average

public double average()

count

public long count()

clear

public Profiler clear()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

handleProbe

public java.util.Map<java.lang.String,java.lang.String> handleProbe(java.lang.String... keys)

Description copied from interface: DiagnosticsHandler.ProbeHandler

Handles a probe. For each key that is handled, the key and its result should be in the returned map.

Specified by:

handleProbe in interface DiagnosticsHandler.ProbeHandler

Returns:

Map. A map of keys and values. A null return value is permissible.

supportedKeys

public java.lang.String[] supportedKeys()

Description copied from interface: DiagnosticsHandler.ProbeHandler

Returns a list of supported keys

Specified by:

supportedKeys in interface DiagnosticsHandler.ProbeHandler

toString

protected static java.lang.String toString(java.util.concurrent.TimeUnit unit)