CMemPagePool Class Reference

#include <s32page.h>

class CMemPagePool : public CBase, public MPagePool

Inherits from

CMemPagePool
- CBase
- MPagePool

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

Protected Member Functions
virtual IMPORT_C void	DoDeleteL(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()
	MPagePool::Delete(TPageRef)
	MPagePool::DeleteL(TPageRef)
	MPagePool::Pop()
	MPagePool::PushL()

Detailed Description

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.

Constructor & Destructor Documentation

CMemPagePool ( )

IMPORT_C

CMemPagePool

(

)

Default constructor.

~CMemPagePool ( )

IMPORT_C

~CMemPagePool

(

)

Destructor.

On destruction, memory for all pages is freed.

Member Function Documentation

AcquireL ( )

IMPORT_C TPageAbandonFunction

AcquireL

(

)

[virtual]

Reimplemented from MPagePool::AcquireL()

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

Return Value: Function that does nothing.

AllocL ( )

IMPORT_C TAny *

AllocL

(

)

[virtual]

Reimplemented from MPagePool::AllocL()

Allocates a new unassigned page.

Return Value: Newly allocated page.

AssignL ( const TAny *, TPageReclamation )

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

Reimplemented from MPagePool::AssignL(const TAny *,TPageReclamation)

DoDeleteL ( TPageRef )

IMPORT_C void

DoDeleteL

(

TPageRef

aRef

)

[protected, virtual]

Reimplemented from MPagePool::DoDeleteL(TPageRef)

LockL ( TPageRef )

IMPORT_C TAny *

LockL

(

TPageRef

aRef

)

[virtual]

Reimplemented from MPagePool::LockL(TPageRef)

Returns a pointer to a specified page.

Parameters
aRef	Reference to the page to get

Return Value: Page specified by aRef

NewL ( )

IMPORT_C CMemPagePool *

NewL

(

)

[static]

Allocates and constructs a new CMemPagePool object.

Return Value: New CMemPagePool object

NewLC ( )

IMPORT_C CMemPagePool *

NewLC

(

)

[static]

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

Return Value: New CMemPagePool object

Unlock ( const TAny *, TPageChange )

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

Reimplemented from MPagePool::Unlock(const TAny *,TPageChange)

Unlocks a page.

Parameters
aPage	Page to unlock
aChange	How the page should be treated once it is unlocked

UpdateL ( const TAny * )

IMPORT_C void

UpdateL

(

const TAny *

aPage

)

[virtual]

Reimplemented from MPagePool::UpdateL(const TAny *)

Updates a page.

This can be used for cached pages that may have become outdated.

Parameters
aPage	Page to update