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CMemPagePool Class Reference

class CMemPagePool : public CBase

Uses memory to implement the MPagePool page pool interface.

The class allocates pages from the default heap, storing them in an array. This pool is not persistent.

Inherits from

CMemPagePool
- CBase

Public Member Functions
	CMemPagePool()
	~CMemPagePool()
IMPORT_C TPageAbandonFunction	AcquireL()
IMPORT_C TAny *	AllocL()
IMPORT_C TPageRef	AssignL(const TAny *, TPageReclamation)
IMPORT_C TAny *	LockL(TPageRef)
IMPORT_C CMemPagePool *	NewL()
IMPORT_C CMemPagePool *	NewLC()
IMPORT_C void	Unlock(const TAny *, TPageChange)
IMPORT_C void	UpdateL(const TAny *)

Protected Member Functions
IMPORT_C void	DoDeleteL(TPageRef)

Private Member Functions
void	DoAbandon(MPagePool &)
TAny *&	PageL(TPageRef)

Inherited Functions
	CBase::CBase()
	CBase::Delete(CBase *)
	CBase::Extension_(TUint,TAny &,TAny )
	CBase::operator new(TUint)
	CBase::operator new(TUint,TAny *)
	CBase::operator new(TUint,TLeave)
	CBase::operator new(TUint,TLeave,TUint)
	CBase::operator new(TUint,TUint)
	CBase::~CBase()

Private Attributes
CArrayFixSeg< TAny * >	iPages

Constructor & Destructor Documentation

CMemPagePool()

IMPORT_C

CMemPagePool

(

)

Default constructor.

~CMemPagePool()

IMPORT_C

~CMemPagePool

(

)

Destructor.

On destruction, memory for all pages is freed.

Member Functions Documentation

AcquireL()

IMPORT_C TPageAbandonFunction

AcquireL

(

)

For memory-based pools, there is no need to abandon pages, so the function returned does nothing.

AllocL()

IMPORT_C TAny *

AllocL

(

)

Allocates a new unassigned page.

AssignL(const TAny *, TPageReclamation)

IMPORT_C TPageRef	AssignL	(	const TAny *	aPage,
			TPageReclamation	aReclamation = EPageDeleteOnly
		)

Parameters

const TAny * aPage
TPageReclamation aReclamation = EPageDeleteOnly

DoAbandon(MPagePool &)

void

DoAbandon

(

MPagePool &

aPool

)

[private, static]

Parameters

MPagePool & aPool

DoDeleteL(TPageRef)

IMPORT_C void

DoDeleteL

(

TPageRef

aRef

)

[protected]

Parameters

TPageRef aRef

LockL(TPageRef)

IMPORT_C TAny *

LockL

(

TPageRef

aRef

)

Returns a pointer to a specified page.

Parameters

TPageRef aRef

Reference to the page to get

NewL()

IMPORT_C CMemPagePool *

NewL

(

)

[static]

Allocates and constructs a new CMemPagePool object.

NewLC()

IMPORT_C CMemPagePool *

NewLC

(

)

[static]

Allocates and constructs a new CMemPagePool object, and leaves it on the cleanup stack.

PageL(TPageRef)

TAny *&

PageL

(

TPageRef

aRef

)

[private]

Parameters

TPageRef aRef

Unlock(const TAny *, TPageChange)

IMPORT_C void	Unlock	(	const TAny *	aPage,
			TPageChange	aChange = EPageNoChange
		)

Parameters

const TAny * aPage
TPageChange aChange = EPageNoChange

UpdateL(const TAny *)

IMPORT_C void

UpdateL

(

const TAny *

aPage

)

Parameters

const TAny * aPage

Member Data Documentation

CArrayFixSeg< TAny * > iPages

CArrayFixSeg< TAny * >

iPages

[private]