Class CMMFDataPathEventMonitor

class CMMFDataPathEventMonitor : public CActive;

Description

Active object utility class that can be used to monitor a datapath that is running in its own thread for events. If an event occurs, the client will be notified via the MMMFDataPathEventMonitorObserver interface.

Derivation

• CBase - Base class for all classes to be instantiated on the heap.

• CActive - The core class of the active object abstraction.

• CMMFDataPathEventMonitor - ...

Members

Defined in CMMFDataPathEventMonitor:

• DoCancel()Cancels the outstanding request on iMMFDataPathProxy.
• NewL(MMMFDataPathEventMonitorObserver &,RMMFDataPathProxy &)Constructs a datapath event monitor object.
• RunL()Internal active object function.
• Start()Tells the datapath event monitor to start listening for events.
• ~CMMFDataPathEventMonitor()Destructor.

Inherited from CActive:

• CActive(TInt)Constructs the active object with the specified priority.
• Cancel()Cancels the wait for completion of an outstanding request.
• Deque()Removes the active object from the active scheduler's list of active objects.
• EPriorityHighA priority higher than EPriorityUserInput.
• EPriorityIdleA low priority, useful for active objects representing background processing.
• EPriorityLowA priority higher than EPriorityIdle but lower than EPriorityStandard.
• EPriorityStandardMost active objects will have this priority.
• EPriorityUserInputA priority higher than EPriorityStandard; useful for active objects handling use...
• Extension_(TUint,TAny *&,TAny *)Extension function
• IsActive()constDetermines whether the active object has a request outstanding.
• IsAdded()constDetermines whether the active object has been added to the active scheduler's li...
• Priority()constGets the priority of the active object.
• RunError(TInt)Handles a leave occurring in the request completion event handler CActive::RunL(...
• SetActive()Indicates that the active object has issued a request and that it is now outstan...
• SetPriority(TInt)Sets the priority of the active object.
• TPriorityDefines standard priorities for active objects.
• iStatusThe request status associated with an asynchronous request.

Inherited from CBase:

• Delete(CBase *)Deletes the specified object.
• operator new(TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TAny *)Initialises the object to binary zeroes.
• operator new(TUint,TLeave)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TLeave,TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TUint)Allocates the object from the heap and then initialises its contents to binary z...

IMPORT_C static CMMFDataPathEventMonitor* NewL(MMMFDataPathEventMonitorObserver &aObserver, RMMFDataPathProxy &aMMFDataPathProxy);

Description

Constructs a datapath event monitor object.

Parameters

MMMFDataPathEventMonitorObserver &aObserver A reference to the observer of the active object. The observer will be notified when an event occurs. RMMFDataPathProxy &aMMFDataPathProxy A reference to the client datapath proxy class.

Return value

CMMFDataPathEventMonitor * A pointer to the new event monitor.

IMPORT_C ~CMMFDataPathEventMonitor();

Description

Destructor.

Calls CActive::Cancel().

IMPORT_C void Start();

Description

Tells the datapath event monitor to start listening for events.

The datapath proxy must have been opened before this method is called.

IMPORT_C virtual void RunL();

Description

Internal active object function.

Starts the data path event monitor and handles an event if there is no error status.

Calls HandleEvent on iObserver.

protected: virtual void DoCancel();

Description

Cancels the outstanding request on iMMFDataPathProxy.