SingletonIOStrategy Class Reference

#include <DiskIOStrategy.h>

Inheritance diagram for SingletonIOStrategy:

Collaboration diagram for SingletonIOStrategy:

Public Member Functions
	SingletonIOStrategy (DiskIOStrategy *anIO)
bool	shedLoad () override
int	load () override
RefCount< DiskFile >	newFile (char const *path) override
void	sync () override
bool	unlinkdUseful () const override
void	unlinkFile (char const *path) override
int	callback () override
void	init () override
void	statfs (StoreEntry &sentry) const override
ConfigOption *	getOptionTree () const override

Private Attributes
DiskIOStrategy *	io

Detailed Description

Definition at line 59 of file DiskIOStrategy.h.

Constructor & Destructor Documentation

SingletonIOStrategy()

SingletonIOStrategy::SingletonIOStrategy ( DiskIOStrategy *  anIO )

inline

Definition at line 63 of file DiskIOStrategy.h.

Member Function Documentation

callback()

int SingletonIOStrategy::callback ( )

inlineoverridevirtual

perform any pending callbacks

Reimplemented from DiskIOStrategy.

Definition at line 77 of file DiskIOStrategy.h.

References DiskIOStrategy::callback(), and io.

getOptionTree()

ConfigOption * SingletonIOStrategy::getOptionTree ( ) const

inlineoverridevirtual

module specific options

Reimplemented from DiskIOStrategy.

Definition at line 83 of file DiskIOStrategy.h.

References DiskIOStrategy::getOptionTree(), and io.

init()

void SingletonIOStrategy::init ( void  )

inlineoverridevirtual

Init per-instance logic

Reimplemented from DiskIOStrategy.

Definition at line 79 of file DiskIOStrategy.h.

References DiskIOStrategy::init(), and io.

load()

int SingletonIOStrategy::load ( )

inlineoverridevirtual

What is the current load? 999 = 99.9%

Implements DiskIOStrategy.

Definition at line 67 of file DiskIOStrategy.h.

References io, and DiskIOStrategy::load().

newFile()

RefCount< DiskFile > SingletonIOStrategy::newFile ( char const *  path )

inlineoverridevirtual

Return a handle for performing IO operations

Implements DiskIOStrategy.

Definition at line 69 of file DiskIOStrategy.h.

References io, and DiskIOStrategy::newFile().

shedLoad()

bool SingletonIOStrategy::shedLoad ( )

inlineoverridevirtual

Can the IO Strategy handle more requests ?

Implements DiskIOStrategy.

Definition at line 65 of file DiskIOStrategy.h.

References io, and DiskIOStrategy::shedLoad().

statfs()

void SingletonIOStrategy::statfs ( StoreEntry &  ) const

inlineoverridevirtual

cachemgr output on the IO instance stats

Reimplemented from DiskIOStrategy.

Definition at line 81 of file DiskIOStrategy.h.

References io, and DiskIOStrategy::statfs().

sync()

void SingletonIOStrategy::sync ( )

inlineoverridevirtual

flush all IO operations

Reimplemented from DiskIOStrategy.

Definition at line 71 of file DiskIOStrategy.h.

References io, and DiskIOStrategy::sync().

unlinkdUseful()

bool SingletonIOStrategy::unlinkdUseful ( ) const

inlineoverridevirtual

whether the IO Strategy can use unlinkd

Implements DiskIOStrategy.

Definition at line 73 of file DiskIOStrategy.h.

References io, and DiskIOStrategy::unlinkdUseful().

unlinkFile()

void SingletonIOStrategy::unlinkFile ( char const *  )

inlineoverridevirtual

unlink a file by path

Implements DiskIOStrategy.

Definition at line 75 of file DiskIOStrategy.h.

References io, and DiskIOStrategy::unlinkFile().

Member Data Documentation

io

DiskIOStrategy* SingletonIOStrategy::io

private

Definition at line 86 of file DiskIOStrategy.h.

Referenced by callback(), getOptionTree(), init(), load(), newFile(), shedLoad(), statfs(), sync(), unlinkdUseful(), and unlinkFile().

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

• src/DiskIO/DiskIOStrategy.h