1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/kernelhwsrv/kernel/eka/include/drivers/usbcque.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,147 @@
     1.4 +// Copyright (c) 2002-2009 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\drivers\usbcque.h
    1.18 +// Simple singly linked list + its iterator for the USB Device driver.
    1.19 +// 
    1.20 +//
    1.21 +
    1.22 +/**
    1.23 + @file usbcque.h
    1.24 + @internalTechnology
    1.25 +*/
    1.26 +
    1.27 +#ifndef __USBCQUE_H__
    1.28 +#define __USBCQUE_H__
    1.29 +
    1.30 +#include <kernel/kernel.h>
    1.31 +
    1.32 +
    1.33 +//
    1.34 +// --- Class definitions ---
    1.35 +//
    1.36 +
    1.37 +class TSglQueLink
    1.38 +	{
    1.39 +private:
    1.40 +	void Enque(TSglQueLink* aLink);
    1.41 +public:
    1.42 +	TSglQueLink* iNext;
    1.43 +	friend class TSglQueBase;
    1.44 +	};
    1.45 +
    1.46 +
    1.47 +class TSglQueBase
    1.48 +	{
    1.49 +protected:
    1.50 +	TSglQueBase(TInt aOffset);
    1.51 +	void DoAddLast(TAny* aPtr);
    1.52 +	void DoRemove(TAny* aPtr);
    1.53 +protected:
    1.54 +	TSglQueLink* iHead;
    1.55 +	TSglQueLink* iLast;
    1.56 +	TInt iOffset;
    1.57 +	TInt iElements;
    1.58 +private:
    1.59 +	friend class TSglQueIterBase;
    1.60 +	};
    1.61 +
    1.62 +
    1.63 +template<class T>
    1.64 +class TSglQue : public TSglQueBase
    1.65 +	{
    1.66 +public:
    1.67 +	inline TSglQue(TInt aOffset);
    1.68 +	inline void AddLast(T& aRef);
    1.69 +	inline void Remove(T& aRef);
    1.70 +	inline TInt Elements() const;
    1.71 +	};
    1.72 +
    1.73 +
    1.74 +class TSglQueIterBase
    1.75 +	{
    1.76 +public:
    1.77 +	void SetToFirst();
    1.78 +protected:
    1.79 +	TSglQueIterBase(TSglQueBase& aQue);
    1.80 +	TAny* DoPostInc();
    1.81 +	TAny* DoCurrent();
    1.82 +protected:
    1.83 +	TInt iOffset;
    1.84 +	TSglQueLink*& iHead;
    1.85 +	TSglQueLink* iNext;
    1.86 +	};
    1.87 +
    1.88 +
    1.89 +template<class T>
    1.90 +class TSglQueIter : public TSglQueIterBase
    1.91 +	{
    1.92 +public:
    1.93 +	inline TSglQueIter(TSglQueBase& aQue);
    1.94 +	inline operator T*();
    1.95 +	inline T* operator++(TInt);
    1.96 +	};
    1.97 +
    1.98 +//
    1.99 +// --- Inline implementations ---
   1.100 +//
   1.101 +
   1.102 +// Class TSglQue
   1.103 +template<class T>
   1.104 +inline TSglQue<T>::TSglQue(TInt aOffset)
   1.105 +	: TSglQueBase(aOffset)
   1.106 +	{}
   1.107 +
   1.108 +
   1.109 +template<class T>
   1.110 +inline void TSglQue<T>::AddLast(T& aRef)
   1.111 +	{
   1.112 +	DoAddLast(&aRef);
   1.113 +	}
   1.114 +
   1.115 +
   1.116 +template<class T>
   1.117 +inline void TSglQue<T>::Remove(T& aRef)
   1.118 +	{
   1.119 +	DoRemove(&aRef);
   1.120 +	}
   1.121 +
   1.122 +
   1.123 +template<class T>
   1.124 +inline TInt TSglQue<T>::Elements() const
   1.125 +	{
   1.126 +	return iElements;
   1.127 +	}
   1.128 +
   1.129 +
   1.130 +// Class TSglQueIter
   1.131 +template<class T>
   1.132 +inline TSglQueIter<T>::TSglQueIter(TSglQueBase& aQue)
   1.133 +	: TSglQueIterBase(aQue)
   1.134 +	{}
   1.135 +
   1.136 +
   1.137 +template<class T>
   1.138 +inline TSglQueIter<T>::operator T*()
   1.139 +	{
   1.140 +	return ((T*)DoCurrent());
   1.141 +	}
   1.142 +
   1.143 +template<class T>
   1.144 +inline T* TSglQueIter<T>::operator++(TInt)
   1.145 +	{
   1.146 +	return ((T*)DoPostInc());
   1.147 +	}
   1.148 +
   1.149 +
   1.150 +#endif	// __USBCQUE_H__