mongo::DataFileHeader Class Reference

#include <data_file.h>

Public Types
enum	{ HeaderSize = 8192 }

Public Member Functions
bool	uninitialized () const
void	init (OperationContext *opCtx, int fileno, int filelength, const char *filename)
void	checkUpgrade (OperationContext *opCtx)
bool	isEmpty () const

Public Attributes
DataFileVersion	version
int	fileLength
DiskLoc	unused
	unused is the portion of the file that doesn't belong to any allocated extents. More...
int	unusedLength
DiskLoc	freeListStart
DiskLoc	freeListEnd
char	reserved [8192 - 4 *4 - 8 *3]
char	data [4]

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
HeaderSize

Member Function Documentation

checkUpgrade()

void mongo::DataFileHeader::checkUpgrade

(

OperationContext *

opCtx

)

init()

void mongo::DataFileHeader::init	(	OperationContext *	opCtx,
		int	fileno,
		int	filelength,
		const char *	filename
	)

isEmpty()

bool mongo::DataFileHeader::isEmpty ( ) const

inline

uninitialized()

bool mongo::DataFileHeader::uninitialized ( ) const

inline

Member Data Documentation

data

char mongo::DataFileHeader::data[4]

fileLength

int mongo::DataFileHeader::fileLength

freeListEnd

DiskLoc mongo::DataFileHeader::freeListEnd

freeListStart

DiskLoc mongo::DataFileHeader::freeListStart

reserved

char mongo::DataFileHeader::reserved[8192 - 4 *4 - 8 *3]

unused

DiskLoc mongo::DataFileHeader::unused

unused is the portion of the file that doesn't belong to any allocated extents.

-1 = no more

unusedLength

int mongo::DataFileHeader::unusedLength

version

DataFileVersion mongo::DataFileHeader::version

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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