mongo::DataFile Class Reference

#include <data_file.h>

Public Member Functions
	DataFile (OperationContext *opCtx, int fn)
Status	openExisting (OperationContext *opCtx, const char *filename)
void	open (OperationContext *opCtx, const char *filename, int requestedDataSize=0, bool preallocateOnly=false)
	creates if DNE More...
void	close (OperationContext *opCtx)
	Must be called before destruction. More...
DiskLoc	allocExtentArea (OperationContext *opCtx, int size)
DataFileHeader *	getHeader ()
const DataFileHeader *	getHeader () const
HANDLE	getFd ()
unsigned long long	length () const
void	flush (bool sync)
	fsync More...

Static Public Member Functions
static int	maxSize ()

Private Member Functions
void	badOfs (int) const
int	_defaultSize () const
void	grow (DiskLoc dl, int size)
char *	p () const
DataFileHeader *	header ()
const DataFileHeader *	header () const

Private Attributes
const int	_fileNo
DurableMappedFile	mmf
void *	_mb

Friends
class	MmapV1ExtentManager

Constructor & Destructor Documentation

DataFile()

mongo::DataFile::DataFile ( OperationContext *  opCtx, int  fn  )

inline

Member Function Documentation

_defaultSize()

int mongo::DataFile::_defaultSize ( ) const

private

allocExtentArea()

DiskLoc mongo::DataFile::allocExtentArea	(	OperationContext *	opCtx,
		int	size
	)

badOfs()

NOINLINE_DECL void mongo::DataFile::badOfs ( int  ofs ) const

private

close()

void mongo::DataFile::close ( OperationContext *  opCtx )

inline

Must be called before destruction.

flush()

void mongo::DataFile::flush

(

bool

sync

)

fsync

getFd()

HANDLE mongo::DataFile::getFd ( )

inline

getHeader() [1/2]

DataFileHeader* mongo::DataFile::getHeader ( )

inline

getHeader() [2/2]

const DataFileHeader* mongo::DataFile::getHeader ( ) const

inline

grow()

void mongo::DataFile::grow ( DiskLoc  dl, int  size  )

private

header() [1/2]

DataFileHeader* mongo::DataFile::header ( )

inlineprivate

header() [2/2]

const DataFileHeader* mongo::DataFile::header ( ) const

inlineprivate

length()

unsigned long long mongo::DataFile::length ( ) const

inline

maxSize()

int mongo::DataFile::maxSize ( )

static

open()

void mongo::DataFile::open	(	OperationContext *	opCtx,
		const char *	filename,
		int	requestedDataSize = 0,
		bool	preallocateOnly = false
	)

creates if DNE

openExisting()

Status mongo::DataFile::openExisting	(	OperationContext *	opCtx,
		const char *	filename
	)

Returns

true if found and opened. if uninitialized (prealloc only) does not open.

p()

char* mongo::DataFile::p ( ) const

inlineprivate

Friends And Related Function Documentation

MmapV1ExtentManager

friend class MmapV1ExtentManager

friend

Member Data Documentation

_fileNo

const int mongo::DataFile::_fileNo

private

_mb

void* mongo::DataFile::_mb

private

mmf

DurableMappedFile mongo::DataFile::mmf

private

---

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

• /home/louis/git/mongodbsource.github.io/src/src/mongo/db/storage/mmap_v1/data_file.h
• /home/louis/git/mongodbsource.github.io/src/src/mongo/db/storage/mmap_v1/data_file.cpp