de.redsix.pdfcompare

Class CompareResultWithMemoryOverflow

java.lang.Object

de.redsix.pdfcompare.CompareResult

de.redsix.pdfcompare.AbstractCompareResultWithSwap

de.redsix.pdfcompare.CompareResultWithMemoryOverflow

All Implemented Interfaces:

ResultCollector

public class CompareResultWithMemoryOverflow
extends AbstractCompareResultWithSwap

This CompareResult monitors the memory the JVM consumes through Runtime.totalMemory() - Runtime.freeMemory() when a new page is added. When the consumed memory crosses a threshold, images are swapped to disk and removed from memory. The threshold defaults to 70% of Runtime.maxMemory() but at least 200MB, which worked for me. After swapping, a System.gc() is triggered.

Field Summary

Fields inherited from class de.redsix.pdfcompare.CompareResult

diffImages, hasDifferenceInExclusion, isEqual

Constructor Summary

Constructors

Constructor and Description
CompareResultWithMemoryOverflow()
CompareResultWithMemoryOverflow(int approximateMaxMemoryUsageInMegaBytes)

Method Summary

Modifier and Type	Method and Description
protected void	afterSwap()
protected boolean	needToSwap()

Methods inherited from class de.redsix.pdfcompare.AbstractCompareResultWithSwap

addPage, finalize, hasImages, writeTo

Methods inherited from class de.redsix.pdfcompare.CompareResult

addImagesToDocument, addImagesToDocument, addPageToDocument, getNumberOfPages, hasDifferenceInExclusion, isEqual, isNotEqual, keepImages, noPagesFound

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.redsix.pdfcompare.ResultCollector

done

Constructor Detail

CompareResultWithMemoryOverflow

public CompareResultWithMemoryOverflow()

CompareResultWithMemoryOverflow

public CompareResultWithMemoryOverflow(int approximateMaxMemoryUsageInMegaBytes)

Method Detail

needToSwap

protected boolean needToSwap()

Specified by:

needToSwap in class AbstractCompareResultWithSwap

afterSwap

protected void afterSwap()

Overrides:

afterSwap in class AbstractCompareResultWithSwap