conn::CActiveBackupCallbackHandler Class Reference
| class conn::CActiveBackupCallbackHandler : public CActive |
CActiveBackupCallbackHandler is used to handle the asynchronous calls back from the active backup server. IPC only allows client initiated message transfer and hence the Active Backup Callback Handler must prime the server with an initial message and use the async response to "send" a message to the client side.
Inherits from
- conn::CActiveBackupCallbackHandler
Constructor & Destructor Documentation
CActiveBackupCallbackHandler(MActiveBackupDataClient *, RABClientSession &)
C++ Constructor
- panic
- KErrArgument if the pointer aABDC is NULL
~CActiveBackupCallbackHandler()
| ~CActiveBackupCallbackHandler | ( | ) | [virtual] |
Empty virtual destructor to avoid memory leaks
C++ Destructor
Member Functions Documentation
ConstructL()
Add this object to the scheduler
-
panic
- KErrNotFound Debug only - If an ActiveScheduler is not installed
-
leave
- Release only - If an ActiveScheduler is not installed
CreateFixedBufferL()
|
TPtr8
| CreateFixedBufferL | ( | ) | [private] |
Creates a buffer of the exact size.
DoCancel()
Immediately cancel any outstanding calls to the backup engine
NewL(MActiveBackupDataClient *, RABClientSession &)
Symbian first phase constructor
PrimeServerForCallbackL()
| void | PrimeServerForCallbackL | ( | ) | [private] |
Reprime the server with a new IPC message to respond to
PrimeServerForCallbackWithResponseL(TInt)
| void | PrimeServerForCallbackWithResponseL | ( | TInt | aResponse | ) | [private] |
Reprime the server with a new IPC message to respond to, sending the result of the previous callback
Parameters
| TInt aResponse | The response to send back to the server i.e. the result of the last callback made |
PrimeServerForCallbackWithResponseL(TDesC8 &)
| void | PrimeServerForCallbackWithResponseL | ( | TDesC8 & | aResponse | ) | [private] |
Reprime the server with a new IPC message to respond to, sending the result of the previous callback
Parameters
| TDesC8 & aResponse | The response to send back to the server i.e. the result of the last callback made |
RunError(TInt)
RunError implementation should send the leave code to the ABServer for propagation back to the SBEngine client. This enables any leaves from the callbacks to be returned to the PC for display/handling by the user
Handle any leaves that occur from within the RunL and hence from the callback methods. In order to propagate leaves over to the PC client, they must be sent to the backup engine to leave to the client
Parameters
| TInt aError | The leave code that has been trapped from within the RunL. Propagate this code to the engine |
RunL()
RunL will synchronously call the callback implementation passed in to this object
Handle messages "initiated" by the server. Because of IPC limitations, the client primes the server with a message containing modifiable package buffers that are filled with identifiers and arguments for the callback interface
StartListeningForServerMessagesL()
| void | StartListeningForServerMessagesL | ( | ) | |
Send an asynchronous IPC message to the server in order that it has a vehicle for "initiating" a callback on iActiveBackupDataClient. This should only be called once as it will start the active scheduler
Member Data Documentation
MActiveBackupDataClient * iActiveBackupDataClient
Callback mixin implementation provided by the active backup client
TPckgBuf< TInt > iCallbackArg1
Modifiable package buf containing the first of a maximum of two arguments for the callback
TPckgBuf< TInt > iCallbackArg2
Modifiable package buf containing the second of a maximum of two arguments for the callback
TPckgBuf< TABCallbackCommands > iCallbackCommand
This modifiable package buf is set by the Server to define which callback should be called on the client
RABClientSession & iClientSession
The client session to call methods on
HBufC8 * iTransferBuffer
|
HBufC8 * | iTransferBuffer | [private] |
Buffer for holding transferred data from server
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reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License
v1.0.