com.hp.util

Class ReadOnlyThroughputTracker

java.lang.Object

com.hp.util.ThroughputTracker

com.hp.util.ReadOnlyThroughputTracker

public class ReadOnlyThroughputTracker
extends ThroughputTracker

Auxiliary to create a read-only view of a throughput tracker.

Author:

Thomas Vachuska

Constructor Summary

Constructors

Constructor and Description
ReadOnlyThroughputTracker(ThroughputTracker tt) Create a read-only throughput tracker backed by the another throughput tracker.

Method Summary

Methods

Modifier and Type	Method and Description
void	add(long count) Disabled add operation.
double	duration() Number of seconds elapsed since the tracker was last reset.
void	freeze() Disabled freeze operation.
void	reset() Disabled reset operation.
double	throughput() Get the number of entities transferred per second.
long	total() Get the number of entities accumulated by the tracker.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReadOnlyThroughputTracker

public ReadOnlyThroughputTracker(ThroughputTracker tt)

Create a read-only throughput tracker backed by the another throughput tracker.

Parameters:

tt - backing tracker to be made read-only

Method Detail

reset

public void reset()

Disabled reset operation.

Overrides:

reset in class ThroughputTracker

Throws:

UnsupportedOperationException - if attempted on read-only tracker

freeze

public void freeze()

Disabled freeze operation.

Overrides:

freeze in class ThroughputTracker

Throws:

UnsupportedOperationException - if attempted on read-only tracker

add

public void add(long count)

Disabled add operation.

Overrides:

add in class ThroughputTracker

Parameters:

count - number of entities to consider as transfered

Throws:

UnsupportedOperationException - if attempted on read-only tracker

throughput

public double throughput()

Description copied from class: ThroughputTracker

Get the number of entities transferred per second.

Overrides:

throughput in class ThroughputTracker

Returns:

entities per second throughput

total

public long total()

Description copied from class: ThroughputTracker

Get the number of entities accumulated by the tracker.

Overrides:

total in class ThroughputTracker

Returns:

number of entities previously added to the tracker via add method

duration

public double duration()

Description copied from class: ThroughputTracker

Number of seconds elapsed since the tracker was last reset.

Overrides:

duration in class ThroughputTracker

Returns:

fractional number of seconds since the last reset