C# Class GSF.IO.FileStructure.Media.PageReplacementAlgorithm

A page replacement algorithm that utilizes a quasi LRU algorithm. This class is thread safe.

This class is used by BufferedFile to decide which pages should be replaced.

Inheritance: IDisposable

Public Methods

Method	Description
Dispose ( ) : void	Releases all the resources used by the PageReplacementAlgorithm object.
DoCollection ( CollectionEventArgs e ) : int	Executes a collection cycle of the pages that are unused.
PageReplacementAlgorithm ( MemoryPool pool ) : System	Creates a new instance of PageReplacementAlgorithm.
TryAddPage ( long position, IntPtr locationOfPage, int memoryPoolIndex ) : bool	Attempts to add the page to this PageReplacementAlgorithm. Fails if the page already exists.

Releases all the resources used by the PageReplacementAlgorithm object.

public Dispose ( ) : void
return	void

Executes a collection cycle of the pages that are unused.

public DoCollection ( CollectionEventArgs e ) : int
e	GSF.IO.Unmanaged.CollectionEventArgs
return	int

Creates a new instance of PageReplacementAlgorithm.

public PageReplacementAlgorithm ( MemoryPool pool ) : System
pool	MemoryPool	The memory pool that blocks will be allocated from.
return	System

Attempts to add the page to this PageReplacementAlgorithm. Fails if the page already exists.

public TryAddPage ( long position, IntPtr locationOfPage, int memoryPoolIndex ) : bool
position	long	the absolute position that the page references
locationOfPage	IntPtr	the pointer to the page
memoryPoolIndex	int	the index value of the memory pool page so it can be released back to the memory pool
return	bool