com.apple.foundationdb

Class MapEventKeeper

java.lang.Object

com.apple.foundationdb.MapEventKeeper

All Implemented Interfaces:

EventKeeper

public class MapEventKeeper
extends java.lang.Object
implements EventKeeper

A simple map-based EventKeeper. This class is thread-safe(per the EventKeeper spec). It holds all counters in memory;

Nested Class Summary

Nested classes/interfaces inherited from interface com.apple.foundationdb.EventKeeper

EventKeeper.Event, EventKeeper.Events

Constructor Summary

Constructors

Constructor and Description
MapEventKeeper()

Method Summary

Modifier and Type	Method and Description
void	count(EventKeeper.Event event, long amt) Count the number of events which occurred.
long	getCount(EventKeeper.Event event) Get the number of events which occurred since this timer was created.
long	getTimeNanos(EventKeeper.Event event) Get the amount of time taken by this event, in nanoseconds.
void	timeNanos(EventKeeper.Event event, long nanos) Count the time taken to perform an event, in nanoseconds.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.apple.foundationdb.EventKeeper

getTime, increment, time

Constructor Detail

MapEventKeeper

public MapEventKeeper()

Method Detail

count

public void count(EventKeeper.Event event,
                  long amt)

Description copied from interface: EventKeeper

Count the number of events which occurred.

Specified by:

count in interface EventKeeper

Parameters:

event - the event which occurred

amt - the number of times that even occurred

timeNanos

public void timeNanos(EventKeeper.Event event,
                      long nanos)

Description copied from interface: EventKeeper

Count the time taken to perform an event, in nanoseconds. Note that event.isTimeEvent() should return true here.

Specified by:

timeNanos in interface EventKeeper

Parameters:

event - the event which was timed (the event should be a time event).

nanos - the amount of time taken (in nanoseconds)

getCount

public long getCount(EventKeeper.Event event)

Description copied from interface: EventKeeper

Get the number of events which occurred since this timer was created. If the event was never recorded, then this returns 0.

Specified by:

getCount in interface EventKeeper

Parameters:

event - the event to get the count for

Returns:

the number of times the event was triggered. If the event has never been triggered, then this returns 0

getTimeNanos

public long getTimeNanos(EventKeeper.Event event)

Description copied from interface: EventKeeper

Get the amount of time taken by this event, in nanoseconds.

Specified by:

getTimeNanos in interface EventKeeper

Parameters:

event - the event to get the time for

Returns:

the total time measured for this event, in nanoseconds. If the event was never recorded, return 0 instead.