CDeleteMgr Class Reference

class CDeleteMgr : public CActive

Inherits from

Constructor & Destructor Documentation

CDeleteMgr()

CDeleteMgr ( ) [private]

~CDeleteMgr()

~CDeleteMgr ( )

Frees the resources of CDeleteMgr . Any delete requests which have been issued, but not yet executed, are also done.

Pre-condition
Post-condition

Member Functions Documentation

AddDeleteRequest(const CBase *)

TInt AddDeleteRequest ( const CBase * aItemToDelete )

Request an asynchronous deletion of memory. The memory will be freed when the CDeleteMgr::RunL() will be called by the Active Scheduler.

Pre-condition
aItemToDelete != NULL, aItemToDelete != this CDeleteMgr instance itself, pointer to an object can't be added more than once

Parameters

const CBase * aItemToDelete CBase derived object to be deleted. Ownership is transferred.

DoCancel()

void DoCancel ( ) [virtual]

Implements cancellation of an outstanding request.

This function is called as part of the active object's Cancel() .

It must call the appropriate cancel function offered by the active object's asynchronous service provider. The asynchronous service provider's cancel is expected to act immediately.

DoCancel() must not wait for event completion; this is handled by Cancel() .

CActive::Cancel

NewL()

CDeleteMgr * NewL ( ) [static]

Creates a new object.

Pre-condition
Post-condition

RunError(TInt)

TInt RunError ( TInt aError ) [virtual]

Parameters

TInt aError

RunL()

void RunL ( ) [virtual]

Handles an active object's request completion event.

A derived class must provide an implementation to handle the completed request. If appropriate, it may issue another request.

The function is called by the active scheduler when a request completion event occurs, i.e. after the active scheduler's WaitForAnyRequest() function completes.

Before calling this active object's RunL() function, the active scheduler has:

1. decided that this is the highest priority active object with a completed request

2. marked this active object's request as complete (i.e. the request is no longer outstanding)

RunL() runs under a trap harness in the active scheduler. If it leaves, then the active scheduler calls RunError() to handle the leave.

Note that once the active scheduler's Start() function has been called, all user code is run under one of the program's active object's RunL() or RunError() functions.

CActiveScheduler::Start CActiveScheduler::Error CActiveScheduler::WaitForAnyRequest TRAPD

WaitForRequests()

void WaitForRequests ( ) [private]

Starts waiting for AddDeleteRequest() events.

Pre-condition

Member Data Documentation

RPointerArray< CBase > iDeleteRequests

RPointerArray < CBase > iDeleteRequests [private]