mongo::MongoMMF Class Reference

#include <mongommf.h>

Inheritance diagram for mongo::MongoMMF:

[legend]

List of all members.

Public Member Functions
virtual void	close ()
bool	create (string fname, unsigned long long &len, bool sequentialHint)
string	filename () const
int	fileSuffixNo () const
void	flush (bool sync)
void *	getView () const
virtual bool	isMongoMMF ()
unsigned long long	length () const
	MongoMMF ()
bool	open (string fname, bool sequentialHint)
RelativePath	relativePath () const
void	remapThePrivateView ()
void *	view_write () const
bool &	willNeedRemap ()
virtual	~MongoMMF ()
Static Public Member Functions
static void *	_switchToWritableView (void *private_ptr)
Private Member Functions
bool	finishOpening ()
void	setPath (string pathAndFileName)
Private Attributes
int	_fileSuffixNo
RelativePath	_p
void *	_view_private
void *	_view_write
bool	_willNeedRemap

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Detailed Description

MongoMMF adds some layers atop memory mapped files - specifically our handling of private views & such. if you don't care about journaling/durability (temp sort files & such) use MemoryMappedFile class, not this.

Definition at line 29 of file mongommf.h.

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Constructor & Destructor Documentation

mongo::MongoMMF::MongoMMF

(

)

virtual mongo::MongoMMF::~MongoMMF

(

)

[virtual]

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Member Function Documentation

static void* mongo::MongoMMF::_switchToWritableView

(

void *

private_ptr

)

[static]

virtual void mongo::MongoMMF::close

(

)

[virtual]

Reimplemented from mongo::MemoryMappedFile.

bool mongo::MongoMMF::create	(	string	fname,
		unsigned long long &	len,
		bool	sequentialHint
	)

string mongo::MongoMMF::filename

(

)

const [inline]

Reimplemented from mongo::MongoFile.

Definition at line 41 of file mongommf.h.

int mongo::MongoMMF::fileSuffixNo

(

)

const [inline]

Definition at line 80 of file mongommf.h.

bool mongo::MongoMMF::finishOpening

(

)

[private]

void mongo::MongoMMF::flush

(

bool

sync

)

[inline, virtual]

Reimplemented from mongo::MemoryMappedFile.

Definition at line 43 of file mongommf.h.

void* mongo::MongoMMF::getView

(

)

const [inline]

Definition at line 55 of file mongommf.h.

virtual bool mongo::MongoMMF::isMongoMMF

(

)

[inline, virtual]

Reimplemented from mongo::MongoFile.

Definition at line 90 of file mongommf.h.

unsigned long long mongo::MongoMMF::length

(

)

const [inline, virtual]

Returns:

file length

Reimplemented from mongo::MemoryMappedFile.

Definition at line 39 of file mongommf.h.

bool mongo::MongoMMF::open	(	string	fname,
		bool	sequentialHint
	)

Returns:

true if opened ok.

RelativePath mongo::MongoMMF::relativePath

(

)

const [inline]

for a filename a/b/c.3 filePath() is "a/b/c" fileSuffixNo() is 3 if the suffix is "ns", fileSuffixNo -1

Definition at line 75 of file mongommf.h.

void mongo::MongoMMF::remapThePrivateView

(

)

void mongo::MongoMMF::setPath

(

string

pathAndFileName

)

[private]

void* mongo::MongoMMF::view_write

(

)

const [inline]

Definition at line 60 of file mongommf.h.

bool& mongo::MongoMMF::willNeedRemap

(

)

[inline]

true if we have written. set in PREPLOGBUFFER, it is NOT set immediately on write intent declaration. reset to false in REMAPPRIVATEVIEW

Definition at line 86 of file mongommf.h.

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Member Data Documentation

int mongo::MongoMMF::_fileSuffixNo [private]

Definition at line 98 of file mongommf.h.

RelativePath mongo::MongoMMF::_p [private]

Definition at line 97 of file mongommf.h.

void* mongo::MongoMMF::_view_private [private]

Definition at line 95 of file mongommf.h.

void* mongo::MongoMMF::_view_write [private]

Definition at line 94 of file mongommf.h.

bool mongo::MongoMMF::_willNeedRemap [private]

Definition at line 96 of file mongommf.h.

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

• mongommf.h