author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 15 Mar 2010 12:46:13 +0200 (2010-03-15) | |
branch | RCL_3 |
changeset 7 | 8a14024f954a |
parent 0 | a03f92240627 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Definition of MDispatcher interface that used |
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* to dispatch incoming messages to servers |
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* and outcoming to host client. |
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* MDispatcher* should be used by services to send outcoming |
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* messages |
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* |
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*/ |
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#ifndef DISPATCHERINTERFACE_H__ |
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#define DISPATCHERINTERFACE_H__ |
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#include <e32std.h> |
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class CHtiMessage; |
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class CConsoleBase; |
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enum THtiMessagePriority |
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{ |
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EHtiPriorityDefault = 0, |
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EHtiPriorityData = 0, |
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EHtiPriorityControl = 2 |
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}; |
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|
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const TInt KErrorDescriptionMaxLength = 118; |
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|
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/** |
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* Observer interface that should be implemented by plugin if it wants |
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* to resend message failed due to KErrNoMemory. |
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**/ |
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class MHtiMemoryObserver |
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{ |
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public: |
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/** |
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* |
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* This function called by the dispatcher after plug-in request |
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* (@see MHtiDispatcher::AddMemoryObserver()) every time |
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* when some message was removed from the outgoing queue. |
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* |
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* @param aAvailableMemory amount of memory currently available for |
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* outgoing messages |
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**/ |
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virtual void NotifyMemoryChange(TInt aAvailableMemory) = 0; |
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}; |
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/** |
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* Interface to the HTI dispatcher used by service plug-ins for message |
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* sending. |
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**/ |
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class MHtiDispatcher |
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{ |
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public: |
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/** |
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* |
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* Send message from the service back to host client. |
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* Transfer ownership of aMessage. |
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* The function adds messages to the outgoing queue. |
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* Message will be actualy sent later. |
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* Function can return KErrNoMemory if there is not enough memory to |
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* add it to the queue. |
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* Plug-in use AddMemoryObserver to be notified later when memory |
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* will be available to continue data transfer. |
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* |
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* @param aMessage contain server-specific data |
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* @param aTargetServiceUid service UID |
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* @param aWrappedFlag shoud set to ETrue if message should be |
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* wrapped by security manager |
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* @param aPriority message priority |
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* |
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* @return KErrNone if message was succesfully added to the outgoing queue |
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* KErrNoMemory when there is not enough memory. |
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*/ |
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virtual TInt DispatchOutgoingMessage( TDesC8* aMessage, |
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const TUid aTargetServiceUid, |
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TBool aWrappedFlag, |
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THtiMessagePriority aPriority ) = 0; |
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virtual TInt DispatchOutgoingMessage(TDesC8* aMessage, |
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const TUid aTargetServiceUid) = 0; |
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virtual TInt DispatchOutgoingErrorMessage(TInt aErrorCode, |
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const TDesC8& aErrorDescription, |
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const TUid aTargetServiceUid) = 0; |
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/** |
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* Adds memory observer. |
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* |
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* @param anObserver memory observer |
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*/ |
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virtual void AddMemoryObserver(MHtiMemoryObserver* anObserver) = 0; |
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/** |
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* Removes memory observer. |
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* |
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* @param anObserver memory observer |
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*/ |
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virtual void RemoveMemoryObserver(MHtiMemoryObserver* anObserver) = 0; |
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|
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/** |
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* Returns tha amount of currenly available memory for messages. |
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*/ |
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virtual TInt GetFreeMemory() = 0; |
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|
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/** |
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* Notifis dispatcher that some async request is over. |
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* Should be used when plug-in uses async services |
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* and enters in a busy state (IsBusy() returns true) |
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* Should be called when plug-in is able to process new messages again |
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*/ |
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virtual void Notify( TInt anError ) = 0; |
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|
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/* |
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* Getter for the HTI console |
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*/ |
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virtual CConsoleBase* GetConsole() = 0; |
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|
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/* |
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* Shutdown HTI and reboot the device. |
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* |
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* Called from service plug-ins or from EHtiReboot HtiSystem command |
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*/ |
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virtual void ShutdownAndRebootDeviceL() = 0; |
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}; |
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|
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#endif |