overflowdb

Class HeapUsageMonitor

java.lang.Object

overflowdb.HeapUsageMonitor

All Implemented Interfaces:

java.lang.AutoCloseable

public class HeapUsageMonitor
extends java.lang.Object
implements java.lang.AutoCloseable

watches GC activity, and when we're low on available heap space, it instructs the ReferenceManager to clear some references, in order to avoid an OutOfMemoryError

Constructor Summary

Constructors

Constructor and Description
HeapUsageMonitor(int heapPercentageThreshold, overflowdb.HeapUsageMonitor.HeapNotificationListener notificationListener)

Method Summary

Modifier and Type	Method and Description
void	close()
protected void	installGCMonitoring(float heapUsageThreshold, overflowdb.HeapUsageMonitor.HeapNotificationListener notificationListener) monitor GC, and should the heap grow above 80% usage, clear some strong references

Methods inherited from class java.lang.Object

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

Constructor Detail

HeapUsageMonitor

public HeapUsageMonitor(int heapPercentageThreshold,
                        overflowdb.HeapUsageMonitor.HeapNotificationListener notificationListener)

Method Detail

installGCMonitoring

protected void installGCMonitoring(float heapUsageThreshold,
                                   overflowdb.HeapUsageMonitor.HeapNotificationListener notificationListener)

monitor GC, and should the heap grow above 80% usage, clear some strong references

Parameters:

heapUsageThreshold - range 0.0 - 1.0

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable