Isis::FilterCachingAlgorithm Class Reference

This algorithm is designed for applications that use ProcessByQuickFilter or very similar I/O patterns to cache cube data appropriately. More...

#include <FilterCachingAlgorithm.h>

Inheritance diagram for Isis::FilterCachingAlgorithm:

Collaboration diagram for Isis::FilterCachingAlgorithm:

Public Member Functions
	FilterCachingAlgorithm (int numParallelIOs)
	Construct a new FilterCachingAlgorithm.
virtual	~FilterCachingAlgorithm ()
	Frees the memory allocated by this caching algorithm.
virtual CacheResult	recommendChunksToFree (QList< RawCubeChunk * > allocated, QList< RawCubeChunk * > justUsed, const Buffer &justRequested)
	Please see the class description for how this algorithm works.

Detailed Description

This algorithm is designed for applications that use ProcessByQuickFilter or very similar I/O patterns to cache cube data appropriately.

The last numParallelIOs worth of I/Os will be left in the cache.

Author

????-??-?? Jai Rideout and Steven Lambright

Constructor & Destructor Documentation

FilterCachingAlgorithm()

Isis::FilterCachingAlgorithm::FilterCachingAlgorithm

(

int

numParallelIOs

)

Construct a new FilterCachingAlgorithm.

The last numParallelIOs will be kept in the cache, while the other chunks in the cache will all be tossed.

Parameters

numParallelIOs

The number of IO operations to keep the chunks around for.

~FilterCachingAlgorithm()

Isis::FilterCachingAlgorithm::~FilterCachingAlgorithm ( )

virtual

Frees the memory allocated by this caching algorithm.

Member Function Documentation

recommendChunksToFree()

CubeCachingAlgorithm::CacheResult Isis::FilterCachingAlgorithm::recommendChunksToFree ( QList< RawCubeChunk * > allocated, QList< RawCubeChunk * > justUsed, const Buffer & justRequested )

virtual

Please see the class description for how this algorithm works.

Parameters

allocated	All of the allocated cube chunks
justUsed	The cube chunks used in the last I/O
justRequested	The buffer passed into the last I/O

Returns

The chunks that should be removed from memory

Implements Isis::CubeCachingAlgorithm.

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The documentation for this class was generated from the following files:

• /Users/chkim/repos/ISIS3/isis/src/base/objs/FilterCachingAlgorithm/FilterCachingAlgorithm.h
• /Users/chkim/repos/ISIS3/isis/src/base/objs/FilterCachingAlgorithm/FilterCachingAlgorithm.cpp