This is the parent of the caching algorithms. More...

#include <CubeCachingAlgorithm.h>

Inheritance diagram for Isis::CubeCachingAlgorithm:

Collaboration diagram for Isis::CubeCachingAlgorithm:

Classes
class	CacheResult
	This stores the results of the caching algorithm. More...

Public Member Functions
	CubeCachingAlgorithm ()
	Construct a caching algorithm.

virtual	~CubeCachingAlgorithm ()
	Cleans up after a caching algorithm.

virtual CacheResult	recommendChunksToFree (QList< RawCubeChunk * > allocated, QList< RawCubeChunk * > justUsed, const Buffer &justRequested)=0
	Call this to determine which chunks should be freed from memory.

Detailed Description

This is the parent of the caching algorithms.

The caching algorithms are given some limited/easy to acquire data about recent IOs and the allocated cube chunks. Their job is to quickly determine which allocated cube chunks should be put on disk or just freed from memory. These will not be called until there is at least a few allocated chunks in memory.

Author: ????-??-?? Jai Rideout and Steven Lambright

Definition at line 31 of file CubeCachingAlgorithm.h.

Constructor & Destructor Documentation

◆ CubeCachingAlgorithm()

Isis::CubeCachingAlgorithm::CubeCachingAlgorithm ( )

Construct a caching algorithm.

Definition at line 20 of file CubeCachingAlgorithm.cpp.

◆ ~CubeCachingAlgorithm()

Isis::CubeCachingAlgorithm::~CubeCachingAlgorithm ( )

virtual

Cleans up after a caching algorithm.

Definition at line 27 of file CubeCachingAlgorithm.cpp.

Member Function Documentation

◆ recommendChunksToFree()

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

pure virtual

Call this to determine which chunks should be freed from memory.

Parameters

allocated	This is an unordered list of all of the allocated chunks.
justUsed	This should be the chunks required in the current read or write. Many algorithms will use this to not clean it up.
justRequested	This must be the buffer area requested

Returns: A list of chunks to be freed from memory

Implemented in Isis::BoxcarCachingAlgorithm, Isis::RegionalCachingAlgorithm, Isis::FilterCachingAlgorithm, and Isis::UniqueIOCachingAlgorithm.

Referenced by Isis::CubeIoHandler::minimizeCache().

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

src/base/objs/CubeCachingAlgorithm/CubeCachingAlgorithm.h
src/base/objs/CubeCachingAlgorithm/CubeCachingAlgorithm.cpp