author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 02:03:13 +0200 | |
changeset 0 | c40eb8fe8501 |
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 the License "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: Implementation of RWlanCircularBuffer inline methods. |
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* |
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*/ |
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/* |
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* %version: 2 % |
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*/ |
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#include <kernel.h> // for Kern::SystemTime() |
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// ----------------------------------------------------------------------------- |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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template <TUint size> |
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inline void RWlanCircularBuffer<size>::DoInit() |
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{ |
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iSize = size; |
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iPacketAmount = 0; |
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iGetIndex = 0; |
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iPutIndex = 0; |
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iBecameEmptyAt = 0; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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template <TUint size> |
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inline void RWlanCircularBuffer<size>::Release() |
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{ |
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// Do nothing |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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template <TUint size> |
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inline TBool RWlanCircularBuffer<size>::IsEmpty() const |
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{ |
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return iPacketAmount == 0 ? ETrue : EFalse; |
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} |
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// ----------------------------------------------------------------------------- |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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template <TUint size> |
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inline TBool RWlanCircularBuffer<size>::IsFull() const |
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{ |
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return iPacketAmount == iSize ? ETrue : EFalse; |
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} |
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// ----------------------------------------------------------------------------- |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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template <TUint size> |
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inline TDataBuffer* RWlanCircularBuffer<size>::GetPacket() |
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{ |
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TDataBuffer* packet = NULL; |
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if ( !IsEmpty() ) |
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{ |
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packet = iBuffer[iGetIndex]; |
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if ( ++iGetIndex == iSize ) |
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{ |
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iGetIndex = 0; |
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} |
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if ( --iPacketAmount == 0 ) |
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{ |
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iBecameEmptyAt = Kern::SystemTime(); |
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} |
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} |
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return packet; |
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} |
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// ----------------------------------------------------------------------------- |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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template <TUint size> |
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inline TBool RWlanCircularBuffer<size>::PutPacket( TDataBuffer* aPacket ) |
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{ |
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TBool ret( EFalse ); |
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if ( !IsFull() ) |
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{ |
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iBuffer[iPutIndex] = aPacket; |
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if ( ++iPutIndex == iSize ) |
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{ |
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iPutIndex = 0; |
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} |
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++iPacketAmount; |
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ret = ETrue; |
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} |
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return ret; |
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} |
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// ----------------------------------------------------------------------------- |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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template <TUint size> |
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inline TDataBuffer* RWlanCircularBuffer<size>::PeekPacket() |
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{ |
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TDataBuffer* packet = NULL; |
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if ( !IsEmpty() ) |
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{ |
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packet = iBuffer[iGetIndex]; |
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} |
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return packet; |
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} |
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// ----------------------------------------------------------------------------- |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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template <TUint size> |
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inline TUint RWlanCircularBuffer<size>::GetLength() const |
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{ |
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return iPacketAmount; |
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} |
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// ----------------------------------------------------------------------------- |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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template <TUint size> |
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inline TBool RWlanCircularBuffer<size>::IsActive( TInt64 aTimeNow ) const |
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{ |
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const TInt64 KActivityThreshold ( 25000 ); // microseconds |
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if ( !IsEmpty() ) |
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{ |
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return ETrue; |
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} |
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else |
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{ |
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if ( aTimeNow - iBecameEmptyAt > KActivityThreshold ) |
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{ |
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return EFalse; |
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} |
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else |
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{ |
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return ETrue; |
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} |
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} |
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} |