#include <record_store_v1_test_help.h>

Inheritance diagram for mongo::DummyExtentManager:

Classes
struct	ExtentInfo

Public Member Functions
virtual	~DummyExtentManager ()

virtual void	close (OperationContext *opCtx)

virtual Status	init (OperationContext *opCtx)
	opens all current files More...

virtual int	numFiles () const

virtual long long	fileSize () const

virtual DiskLoc	allocateExtent (OperationContext *opCtx, bool capped, int size, bool enforceQuota)

virtual void	freeExtents (OperationContext *opCtx, DiskLoc firstExt, DiskLoc lastExt)
	firstExt has to be == lastExt or a chain More...

virtual void	freeExtent (OperationContext *opCtx, DiskLoc extent)
	frees a single extent ignores all fields in the Extent except: magic, myLoc, length More...

virtual void	freeListStats (OperationContext opCtx, int numExtents, int64_t *totalFreeSizeBytes) const
	Retrieve statistics on the the free list managed by this ExtentManger. More...

virtual MmapV1RecordHeader *	recordForV1 (const DiskLoc &loc) const

virtual std::unique_ptr< RecordFetcher >	recordNeedsFetch (const DiskLoc &loc) const final
	The extent manager tracks accesses to DiskLocs. More...

virtual Extent *	extentForV1 (const DiskLoc &loc) const

virtual DiskLoc	extentLocForV1 (const DiskLoc &loc) const

virtual Extent *	getExtent (const DiskLoc &loc, bool doSanityCheck=true) const

virtual int	maxSize () const

virtual CacheHint *	cacheHint (const DiskLoc &extentLoc, const HintType &hint)
	Tell the system that for this extent, it will have this kind of disk access. More...

DataFileVersion	getFileFormat (OperationContext *opCtx) const final

virtual void	setFileFormat (OperationContext *opCtx, DataFileVersion newVersion) final

const DataFile *	getOpenFile (int n) const final

Public Member Functions inherited from mongo::ExtentManager
	ExtentManager ()

virtual	~ExtentManager ()

virtual int	minSize () const

virtual int	followupSize (int recordLen, int lastExtentLen) const

virtual int	initialSize (int recordLen) const
	get a suggested size for the first extent in a namespace More...

virtual int	quantizeExtentSize (int size) const
	quantizes extent size to >= min + page boundary More...

Protected Attributes
std::vector< ExtentInfo >	_extents

Additional Inherited Members
Public Types inherited from mongo::ExtentManager
enum	HintType { Sequential, Random }

Constructor & Destructor Documentation

◆ ~DummyExtentManager()

mongo::DummyExtentManager::~DummyExtentManager ( )

virtual

Member Function Documentation

◆ allocateExtent()

DiskLoc mongo::DummyExtentManager::allocateExtent	(	OperationContext *	opCtx,
		bool	capped,
		int	size,
		bool	enforceQuota
	)

virtual

Implements mongo::ExtentManager.

◆ cacheHint()

DummyExtentManager::CacheHint * mongo::DummyExtentManager::cacheHint	(	const DiskLoc &	extentLoc,
		const HintType &	hint
	)

virtual

Tell the system that for this extent, it will have this kind of disk access.

Caller takes owernship of CacheHint

Implements mongo::ExtentManager.

◆ close()

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

virtual

Implements mongo::ExtentManager.

◆ extentForV1()

Extent * mongo::DummyExtentManager::extentForV1 ( const DiskLoc & loc ) const

virtual

Parameters

loc	- has to be for a specific MmapV1RecordHeader (not an Extent) Note(erh) see comment on recordFor

Implements mongo::ExtentManager.

◆ extentLocForV1()

DiskLoc mongo::DummyExtentManager::extentLocForV1 ( const DiskLoc & loc ) const

virtual

Parameters

loc	- has to be for a specific MmapV1RecordHeader (not an Extent) Note(erh) see comment on recordFor

Implements mongo::ExtentManager.

◆ fileSize()

long long mongo::DummyExtentManager::fileSize ( ) const

virtual

Implements mongo::ExtentManager.

◆ freeExtent()

void mongo::DummyExtentManager::freeExtent	(	OperationContext *	opCtx,
		DiskLoc	extent
	)

virtual

frees a single extent ignores all fields in the Extent except: magic, myLoc, length

Implements mongo::ExtentManager.

◆ freeExtents()

void mongo::DummyExtentManager::freeExtents	(	OperationContext *	opCtx,
		DiskLoc	firstExt,
		DiskLoc	lastExt
	)

virtual

firstExt has to be == lastExt or a chain

Implements mongo::ExtentManager.

◆ freeListStats()

void mongo::DummyExtentManager::freeListStats	(	OperationContext *	opCtx,
		int *	numExtents,
		int64_t *	totalFreeSizeBytes
	)		const

virtual

Retrieve statistics on the the free list managed by this ExtentManger.

Parameters

numExtents	- non-null pointer to an int that will receive the number of extents
totalFreeSizeBytes	- non-null pointer to an int64_t receiving the total free space in the free list.

Implements mongo::ExtentManager.

◆ getExtent()

Extent * mongo::DummyExtentManager::getExtent	(	const DiskLoc &	loc,
		bool	doSanityCheck = `true`
	)		const

virtual

Parameters

loc	- has to be for a specific Extent

Implements mongo::ExtentManager.

◆ getFileFormat()

DataFileVersion mongo::DummyExtentManager::getFileFormat ( OperationContext * opCtx ) const

finalvirtual

Implements mongo::ExtentManager.

◆ getOpenFile()

const DataFile * mongo::DummyExtentManager::getOpenFile ( int n ) const

finalvirtual

Implements mongo::ExtentManager.

◆ init()

Status mongo::DummyExtentManager::init ( OperationContext * opCtx )

virtual

opens all current files

Implements mongo::ExtentManager.

◆ maxSize()

int mongo::DummyExtentManager::maxSize ( ) const

virtual

Returns: maximum size of an Extent

Implements mongo::ExtentManager.

◆ numFiles()

int mongo::DummyExtentManager::numFiles ( ) const

virtual

Implements mongo::ExtentManager.

◆ recordForV1()

MmapV1RecordHeader * mongo::DummyExtentManager::recordForV1 ( const DiskLoc & loc ) const

virtual

Parameters

loc	- has to be for a specific MmapV1RecordHeader Note(erh): this sadly cannot be removed. A MmapV1RecordHeader DiskLoc has an offset from a file, while a RecordStore really wants an offset from an extent. This intrinsically links an original record store to the original extent manager.

Implements mongo::ExtentManager.

◆ recordNeedsFetch()

std::unique_ptr< RecordFetcher > mongo::DummyExtentManager::recordNeedsFetch ( const DiskLoc & loc ) const

finalvirtual

The extent manager tracks accesses to DiskLocs.

This returns non-NULL if the DiskLoc has been recently accessed, and therefore has likely been paged into physical memory. Returns nullptr if the DiskLoc is Null.

Implements mongo::ExtentManager.

◆ setFileFormat()

void mongo::DummyExtentManager::setFileFormat	(	OperationContext *	opCtx,
		DataFileVersion	newVersion
	)

finalvirtual

Implements mongo::ExtentManager.

Member Data Documentation

◆ _extents

std::vector<ExtentInfo> mongo::DummyExtentManager::_extents

protected

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

/home/louis/git/mongodbsource.github.io/src/src/mongo/db/storage/mmap_v1/record_store_v1_test_help.h
/home/louis/git/mongodbsource.github.io/src/src/mongo/db/storage/mmap_v1/record_store_v1_test_help.cpp

Classes

Public Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ ~DummyExtentManager()

Member Function Documentation

◆ allocateExtent()

◆ cacheHint()

◆ close()

◆ extentForV1()

◆ extentLocForV1()

◆ fileSize()

◆ freeExtent()

◆ freeExtents()

◆ freeListStats()

◆ getExtent()

◆ getFileFormat()

◆ getOpenFile()

◆ init()

◆ maxSize()

◆ numFiles()

◆ recordForV1()

◆ recordNeedsFetch()

◆ setFileFormat()

Member Data Documentation

◆ _extents