org.openspaces.admin.internal.statistics

Class ScheduledStatisticsHolder

java.lang.Object

org.openspaces.admin.internal.statistics.ScheduledStatisticsHolder

public class ScheduledStatisticsHolder
extends Object

Holds the statics monitor future and lock mechanism. Created by moran on 12/9/17.

Since:

12.3

Constructor Summary

Constructors

Constructor and Description
ScheduledStatisticsHolder()

Method Summary

Modifier and Type	Method and Description
void	cancelMonitor(boolean mayInterruptIfRunning) Should be called under lock.
int	decrementAndGetRefCount() Should be called under lock.
int	getAndIncrementRefCount() Should be called under lock.
int	getStatisticsHistorySize()
long	getStatisticsInterval()
boolean	isMonitoring() Should be called under lock.
void	updateMonitor(ScheduledFuture<?> scheduledFuture) Should be called under lock.
void	updateStatisticsHistorySize(int statisticsHistorySize) Should be called under lock.
void	updateStatisticsInterval(long interval, TimeUnit timeUnit) Should be called under lock.

Methods inherited from class java.lang.Object

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

Constructor Detail

ScheduledStatisticsHolder

public ScheduledStatisticsHolder()

Method Detail

getStatisticsInterval

public long getStatisticsInterval()

Returns:

the statistics interval (volatile access).

updateStatisticsInterval

public void updateStatisticsInterval(long interval,
                                     TimeUnit timeUnit)

Should be called under lock. Updates the interval.

getStatisticsHistorySize

public int getStatisticsHistorySize()

Returns:

the statistics history size (volatile access).

updateStatisticsHistorySize

public void updateStatisticsHistorySize(int statisticsHistorySize)

Should be called under lock. Updates the history size.

cancelMonitor

public void cancelMonitor(boolean mayInterruptIfRunning)

Should be called under lock. Cancels the monitor

updateMonitor

public void updateMonitor(ScheduledFuture<?> scheduledFuture)

Should be called under lock. Updates the monitor

getAndIncrementRefCount

public int getAndIncrementRefCount()

Should be called under lock. Increments by 1 and returns the old value.

Returns:

the value before increment.

decrementAndGetRefCount

public int decrementAndGetRefCount()

Should be called under lock. Decrements by 1 and returns the new value.

Returns:

the value after decrement or zero. Never negative.

isMonitoring

public boolean isMonitoring()

Should be called under lock.

Returns:

true if there is a scheduled monitor present.