1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/kernelhwsrv/kernel/eka/include/nkernsmp/nk_event.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,93 @@
     1.4 +// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of the License "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +// e32\include\nkernsmp\nk_event.h
    1.18 +// 
    1.19 +// WARNING: This file contains some APIs which are internal and are subject
    1.20 +//          to change without notice. Such APIs should therefore not be used
    1.21 +//          outside the Kernel and Hardware Services package.
    1.22 +//
    1.23 +
    1.24 +#ifndef __NK_EVENT_H__
    1.25 +#define __NK_EVENT_H__
    1.26 +
    1.27 +#include <nklib.h>
    1.28 +
    1.29 +class NSchedulable;
    1.30 +class TSpinLock;
    1.31 +class TDfcQue;
    1.32 +
    1.33 +/********************************************
    1.34 + * Event handler
    1.35 + ********************************************/
    1.36 +
    1.37 +/**
    1.38 +@internalComponent
    1.39 +
    1.40 +General event handler callback
    1.41 +*/
    1.42 +typedef void (*NEventFn)(TAny*);
    1.43 +
    1.44 +/**
    1.45 +@internalComponent
    1.46 +
    1.47 +General event handler structure
    1.48 +*/
    1.49 +struct NEventHandler : public SDblQueLink		// link into active queue
    1.50 +	{
    1.51 +	inline NEventHandler()
    1.52 +		:	iHState(0), iTied(0), iPtr(0), iFn(0)
    1.53 +		{
    1.54 +		iTiedLink.iNext = 0;
    1.55 +		}
    1.56 +
    1.57 +	enum TEventHandlerType
    1.58 +		{
    1.59 +		EEventHandlerIrq=0xFCu,
    1.60 +		EEventHandlerNTimer=0xFDu,
    1.61 +		EEventHandlerIDFC=0xFEu,
    1.62 +		EEventHandlerDummy=0xFFu,
    1.63 +		};
    1.64 +	struct N8816
    1.65 +		{
    1.66 +		TUint8	iHType;
    1.67 +		TUint8	iHState8;
    1.68 +		TUint16	iHState16;
    1.69 +		};
    1.70 +	struct N8888
    1.71 +		{
    1.72 +		TUint8	iHType;
    1.73 +		TUint8	iHState0;
    1.74 +		TUint8	iHState1;
    1.75 +		TUint8	iHState2;
    1.76 +		};
    1.77 +	union
    1.78 +		{
    1.79 +		volatile TUint32		iHState;		// state information
    1.80 +		volatile TUint8			iHType;			// type of event handler
    1.81 +		volatile N8816			i8816;
    1.82 +		volatile N8888			i8888;
    1.83 +		};
    1.84 +	union
    1.85 +		{
    1.86 +		NSchedulable* volatile	iTied;			// pointer to tied thread/group
    1.87 +		TDfcQue* volatile		iDfcQ;			// doubles as pointer to DFC queue
    1.88 +		};										// since DFCs can't be tied
    1.89 +	TAny* volatile				iPtr;			// argument to callback
    1.90 +	volatile NEventFn			iFn;			// callback function
    1.91 +	SDblQueLink					iTiedLink;		// link to tied/group for cleanup purposes
    1.92 +
    1.93 +	static TSpinLock			TiedLock;		// Protects iTied member of all NEventHandlers
    1.94 +	};
    1.95 +
    1.96 +#endif