commsfwsupport/commselements/meshmachine/inc/mm_activities_internal.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 25 May 2010 14:00:39 +0300
branchRCL_3
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permissions -rw-r--r--
Revision: 201021 Kit: 2010121
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// Copyright (c) 2007-2009 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:
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// generic framework node state machine states
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// 
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//
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/**
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 @file 
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 @internalAll
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*/
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#ifndef SYMBIAN_MM_ACTIVITIES_INTERNAL_H
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#define SYMBIAN_MM_ACTIVITIES_INTERNAL_H
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namespace MeshMachine
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{
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static const TUint16 KActivityNull                 = 0;
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static const TUint16 KActivityCustom               = 0x007f;
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//the range is used for activities that can run more than one instance in parallel
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//such activities must be type of or derived from CNodeParallerActivityBase (e_mm_activity.h)
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static const TUint16 KActivityParallelRangeMin     = 0x0100;
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static const TUint16 KActivityParallelRangeMax     = 0xFF00;
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class AMMNodeBase;
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class CNodeActivityBase;
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class TNodeContextBase;
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//-=========================================================
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//
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// TNodeActivity
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//
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//-=========================================================
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struct TNodeActivity
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/**
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*/
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	{
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	enum TNodeActivityFlags
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	{
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	EContextCtor = 1
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	};
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	/*There are now two types of activity c'tors (hence TAny iCtor supported:
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	(1) The legacy ctor based on AMMNodeBase that must be supported for source backwards compatibility
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	(2) The new ctor based on TNodeContextBase that is desired because TNodeContextBase gives access to AMMNodeBase as well as the message 
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	    and peer and it is therefore more powerful. This new ctor has been introduced to aid leave activities to be infallible
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		by allowing access to the peer, which stores the space preallocated for the activity
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	Ideally this once fixed to only leave (2) especially since differentiating (1) from (2) is rather obscure. iCtor is a pointer
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	to a pointer to a ctor function and the distinction is based on where iCtor points (see AMMNodeBase::StartActivityL) */
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	typedef CNodeActivityBase* (*TStaticActivityCtor)(const TNodeActivity& aActivitySig, AMMNodeBase& aNode);
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	typedef CNodeActivityBase* (*TStaticActivityContextCtor)(const TNodeActivity& aActivitySig, TNodeContextBase& aCtx);
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	const TUint8 iId;
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	const TUint8 iFlags;
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	//Message starting the activity (state in iFirstTriple is waiting for),
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	//used by error handling, could be NULL for "single triple" activities because
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	//than the current message associated with context is used.
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    const TUint16 iKickOffMessageId;
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    const TUint32 iKickOffMessageRealm;
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	const NetStateMachine::TStateTriple& iFirstTriple;
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	const TAny* iCtor;
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	const TText8* iName;
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	};
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//-=========================================================
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//
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// TNodeActivityMap
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//
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//-=========================================================
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struct TNodeActivityMap
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/**
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*/
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	{
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	typedef const TNodeActivityMap& (*TStaticNodeActivityMap)();
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	typedef const TNodeActivity& (*TStaticNodeActivity)();
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	const TStaticNodeActivity& iFirstActivity;
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	};
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//-=========================================================
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//
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// TNodeActivityIter
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//
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//-=========================================================
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class TNodeActivityIter
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/**
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*/
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	{
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public:
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	TNodeActivityIter(const TNodeActivityMap& aActivityMap)
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	:	iCurrentEntry(&aActivityMap.iFirstActivity)
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		{
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		}
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	const TNodeActivity* operator++(TInt /*aInd*/)
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		{
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		return FetchActivity(); //recursive
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		}
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private:
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	const TNodeActivity* FetchActivity();
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private:
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	const TNodeActivityMap::TStaticNodeActivity* iCurrentEntry;
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	};
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} // namespace MeshMachine
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#endif // SYMBIAN_MM_ACTIVITIES_INTERNAL_H
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