com.espertech.esper.timer
Class TimerServiceImpl

java.lang.Object
  com.espertech.esper.timer.TimerServiceImpl

All Implemented Interfaces:

TimerService

public final class TimerServiceImpl
extends java.lang.Object
implements TimerService

Implementation of the internal clocking service interface.

Constructor Summary

TimerServiceImpl(java.lang.String engineURI, long msecTimerResolution)
Constructor.

Method Summary

void	disableStats() Disable statistics.
void	enableStats() Enable statistics.
long	getInvocationCount() Return invocation count.
long	getLastDrift() Return last drift.
long	getMaxDrift() Return maximum drift.
long	getMsecTimerResolution() Returns the timer resolution.
long	getTotalDrift() Return total drift.
void	setCallback(TimerCallback timerCallback) Set the callback method to invoke for clock ticks.
void	startInternalClock() Start clock expecting callbacks at regular intervals and a fixed rate.
void	stopInternalClock(boolean warnIfNotStarted) Stop internal clock.

Methods inherited from class java.lang.Object

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

Constructor Detail

TimerServiceImpl

public TimerServiceImpl(java.lang.String engineURI,
                        long msecTimerResolution)

Constructor.

Parameters:

msecTimerResolution - is the millisecond resolution or interval the internal timer thread processes schedules

engineURI - engine URI

Method Detail

getMsecTimerResolution

public long getMsecTimerResolution()

Returns the timer resolution.

Returns:

the millisecond resolution or interval the internal timer thread processes schedules

setCallback

public void setCallback(TimerCallback timerCallback)

Description copied from interface: TimerService

Set the callback method to invoke for clock ticks.

Specified by:

setCallback in interface TimerService

Parameters:

timerCallback - is the callback

startInternalClock

public final void startInternalClock()

Description copied from interface: TimerService

Start clock expecting callbacks at regular intervals and a fixed rate. Catch-up callbacks are possible should the callback fall behind.

Specified by:

startInternalClock in interface TimerService

stopInternalClock

public final void stopInternalClock(boolean warnIfNotStarted)

Description copied from interface: TimerService

Stop internal clock.

Specified by:

stopInternalClock in interface TimerService

Parameters:

warnIfNotStarted - use true to indicate whether to warn if the clock is not started, use false to not warn and expect the clock to be not started.

enableStats

public void enableStats()

Description copied from interface: TimerService

Enable statistics.

Specified by:

enableStats in interface TimerService

disableStats

public void disableStats()

Description copied from interface: TimerService

Disable statistics.

Specified by:

disableStats in interface TimerService

getMaxDrift

public long getMaxDrift()

Description copied from interface: TimerService

Return maximum drift.

Specified by:

getMaxDrift in interface TimerService

Returns:

drift

getLastDrift

public long getLastDrift()

Description copied from interface: TimerService

Return last drift.

Specified by:

getLastDrift in interface TimerService

Returns:

drift

getTotalDrift

public long getTotalDrift()

Description copied from interface: TimerService

Return total drift.

Specified by:

getTotalDrift in interface TimerService

Returns:

drift

getInvocationCount

public long getInvocationCount()

Description copied from interface: TimerService

Return invocation count.

Specified by:

getInvocationCount in interface TimerService

Returns:

count