com.goldencode.p2j.jmx

Class NanoCounter

java.lang.Object

com.goldencode.p2j.jmx.Facultative

com.goldencode.p2j.jmx.NanoCounter

All Implemented Interfaces:

AgentRegistry<BooleanConsumer>, FacultativeMBean, LongCounter, NanoCounterMBean

Direct Known Subclasses:

ThreadsCpuCounter

public class NanoCounter
extends Facultative
implements NanoCounterMBean, LongCounter

MBean supporting time measuring

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.concurrent.atomic.AtomicLong	count Total number of calls
private java.util.concurrent.atomic.AtomicLong	total Total time

Constructor Summary

Constructors

Constructor and Description
NanoCounter()

Method Summary

Modifier and Type	Method and Description
long	getCount() Get the number of operations
long	getTotalTimeMs() Return total time in ms
long	getTotalTimeNs() Return total time in ns
void	print(java.lang.String file) Print counters' values to the file
void	print(java.lang.String comment, java.lang.String file) Print counters' values to the file
void	reset() Reset counters
java.lang.String	toString(java.lang.String ts, java.lang.String comment) Return the string representation of the counter
void	update(long value) Update counter

Methods inherited from class com.goldencode.p2j.jmx.Facultative

enable, getAnnotation, isEnabled, register, setAnnotation

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.goldencode.p2j.jmx.FacultativeMBean

enable, getAnnotation, isEnabled, setAnnotation

Methods inherited from interface com.goldencode.p2j.jmx.LongCounter

dump

Field Detail

total

private final java.util.concurrent.atomic.AtomicLong total

Total time

count

private final java.util.concurrent.atomic.AtomicLong count

Total number of calls

Constructor Detail

NanoCounter

public NanoCounter()

Method Detail

reset

public void reset()

Reset counters

Specified by:

reset in interface NanoCounterMBean

getTotalTimeNs

public long getTotalTimeNs()

Return total time in ns

Specified by:

getTotalTimeNs in interface NanoCounterMBean

Returns:

total time in ns

getTotalTimeMs

public long getTotalTimeMs()

Return total time in ms

Specified by:

getTotalTimeMs in interface NanoCounterMBean

Returns:

total time in ms

getCount

public long getCount()

Get the number of operations

Specified by:

getCount in interface NanoCounterMBean

Returns:

the number of operations

update

public void update(long value)

Update counter

Specified by:

update in interface LongCounter

Parameters:

value - new value

print

public void print(java.lang.String file)
           throws java.io.IOException

Print counters' values to the file

Specified by:

print in interface NanoCounterMBean

Parameters:

file - output file name (will be appended if exists)

Throws:

java.io.IOException

print

public void print(java.lang.String comment,
                  java.lang.String file)
           throws java.io.IOException

Print counters' values to the file

Parameters:

comment - comment

file - output file name (will be appended if exists)

Throws:

java.io.IOException

toString

public java.lang.String toString(java.lang.String ts,
                                 java.lang.String comment)
                          throws java.io.IOException

Return the string representation of the counter

Specified by:

toString in interface LongCounter

Parameters:

ts -

comment - comment

Returns:

string representation of the counter

Throws:

java.io.IOException