org.apache.activemq.usage

Class StoreUsage

java.lang.Object

org.apache.activemq.usage.Usage<T>

org.apache.activemq.usage.PercentLimitUsage<StoreUsage>

org.apache.activemq.usage.StoreUsage

All Implemented Interfaces:

org.apache.activemq.Service

public class StoreUsage
extends PercentLimitUsage<StoreUsage>

Used to keep track of how much of something is being used so that a productive working set usage can be controlled. Main use case is manage memory usage.

Field Summary

Fields inherited from class org.apache.activemq.usage.PercentLimitUsage

percentLimit

Fields inherited from class org.apache.activemq.usage.Usage

name, parent, percentUsage, usageLock, waitForSpaceCondition

Constructor Summary

Constructors

Constructor and Description
StoreUsage()
StoreUsage(StoreUsage parent, String name)
StoreUsage(String name, PersistenceAdapter store)

Method Summary

Modifier and Type	Method and Description
int	getPercentUsage()
PersistenceAdapter	getStore()
protected long	retrieveUsage()
void	setStore(PersistenceAdapter store)
protected void	updateLimitBasedOnPercent()
boolean	waitForSpace(long timeout, int highWaterMark)

Methods inherited from class org.apache.activemq.usage.PercentLimitUsage

getPercentLimit, setPercentLimit

Methods inherited from class org.apache.activemq.usage.Usage

addChild, addUsageListener, caclPercentUsage, getExecutor, getLimit, getLimiter, getName, getNumUsageListeners, getParent, getPercentUsageMinDelta, getPollingTime, getUsage, getUsagePortion, isFull, isFull, isStarted, notifyCallbackWhenNotFull, onLimitChange, removeChild, removeUsageListener, setExecutor, setLimit, setLimiter, setName, setParent, setPercentUsage, setPercentUsageMinDelta, setPollingTime, setUsagePortion, start, stop, toString, waitForSpace, waitForSpace

Methods inherited from class java.lang.Object

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

Constructor Detail

StoreUsage

public StoreUsage()

StoreUsage

public StoreUsage(String name,
                  PersistenceAdapter store)

StoreUsage

public StoreUsage(StoreUsage parent,
                  String name)

Method Detail

retrieveUsage

protected long retrieveUsage()

Specified by:

retrieveUsage in class org.apache.activemq.usage.Usage<StoreUsage>

getStore

public PersistenceAdapter getStore()

setStore

public void setStore(PersistenceAdapter store)

getPercentUsage

public int getPercentUsage()

Overrides:

getPercentUsage in class org.apache.activemq.usage.Usage<StoreUsage>

waitForSpace

public boolean waitForSpace(long timeout,
                            int highWaterMark)
                     throws InterruptedException

Overrides:

waitForSpace in class org.apache.activemq.usage.Usage<StoreUsage>

Throws:

InterruptedException

updateLimitBasedOnPercent

protected void updateLimitBasedOnPercent()

Specified by:

updateLimitBasedOnPercent in class PercentLimitUsage<StoreUsage>