author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 31 Mar 2010 22:15:10 +0300 | |
branch | RCL_3 |
changeset 15 | 4dc3bb0099b0 |
parent 0 | 5a93021fdf25 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2002-2005 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: Event queue stores an event until all the clients can |
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* receive it. |
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* |
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*/ |
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|
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#include "ConnMonServ.h" |
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#include "ConnMonSess.h" |
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#include "CEventQueue.h" |
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|
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// ============================ MEMBER FUNCTIONS =============================== |
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|
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// ----------------------------------------------------------------------------- |
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// CEventQueue::ConstructL |
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// ----------------------------------------------------------------------------- |
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// |
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void CEventQueue::ConstructL( CConnMonServer* aServer ) |
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{ |
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iServer=aServer; |
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|
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// Allocate nodes |
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for ( TInt i=0; i < KEventQueueSize; i++ ) |
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{ |
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TEventNode* node = new( ELeave ) TEventNode; |
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iSlots.AddFirst( *node ); |
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} |
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|
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// Initialize latest event time |
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iLastEventTime.UniversalTime(); |
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} |
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|
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// Destructor |
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CEventQueue::~CEventQueue() |
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{ |
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TEventNode* node; |
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|
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// Deallocate nodes |
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for ( node=iSlots.First(); node; node=iSlots.First() ) |
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{ |
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iSlots.Remove( *node ); |
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delete node; |
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} |
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for ( node=iEvents.First(); node; node=iEvents.First() ) |
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{ |
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if ( node->iEvent.iExtra.iPtr ) |
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{ |
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delete node->iEvent.iExtra.iPtr; |
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node->iEvent.iExtra.iPtr = NULL; |
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} |
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|
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iEvents.Remove( *node ); |
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delete node; |
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} |
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iServer = NULL; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CEventQueue::Add |
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// ----------------------------------------------------------------------------- |
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// |
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void CEventQueue::Add( const TEventInfo& aEventInfo, const TUint8* aPtr, TInt aSize ) |
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{ |
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TTimeIntervalMicroSeconds microSecond( 1 ); |
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iLastEventTime = iLastEventTime + microSecond; |
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|
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// Get the first free slot - remove oldest event if queue is full |
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TEventNode* node = iSlots.First(); |
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|
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if ( !node ) |
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{ |
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//return; |
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node = iEvents.First(); |
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FreeEvent( node ); |
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node = iSlots.First(); |
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} |
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|
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iSlots.Remove( *node ); |
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|
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// Plug in values |
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node->iEvent.iInfo = aEventInfo; |
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node->iEvent.iTime = iLastEventTime; |
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node->iEvent.iExtra.iPtr = aPtr; |
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node->iEvent.iExtra.iSize = aSize; |
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|
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// Add to the event queue |
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iEvents.AddLast( *node ); |
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|
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// Offer the event to all the clients that are listening |
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// and have requested a new event. |
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TInt numOffered( 0 ); |
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iServer->SendEventToSessions( node->iEvent, numOffered ); |
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|
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// Remove immediately from the queue if all the listeners have got the event |
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if ( numOffered == iServer->NumberOfListeners() ) |
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{ |
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FreeEvent( node ); |
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} |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CEventQueue::CheckEvents |
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// See if there is a new event in the queue for aSession. |
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// ----------------------------------------------------------------------------- |
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// |
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void CEventQueue::CheckEvents( CConnMonSession* aSession ) |
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{ |
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TSglQueIter< TEventNode > iter( iEvents ); |
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|
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if ( aSession == 0 ) |
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{ |
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return; |
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} |
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|
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for ( TEventNode* node = iter++; node; node = iter++ ) |
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{ |
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if ( aSession->CanReceiveEvent() ) |
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{ |
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if ( aSession->SendEventToClient( node->iEvent ) ) |
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{ |
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break; |
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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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// CEventQueue::FreeEvent |
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// ----------------------------------------------------------------------------- |
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// |
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void CEventQueue::FreeEvent( TEventNode* aNode ) |
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{ |
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if ( aNode != 0 ) |
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{ |
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if ( aNode->iEvent.iExtra.iPtr ) |
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{ |
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delete aNode->iEvent.iExtra.iPtr; |
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aNode->iEvent.iExtra.iPtr = NULL; |
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} |
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|
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iEvents.Remove( *aNode ); |
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|
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aNode->iEvent.iInfo.Reset(); |
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aNode->iEvent.iExtra.Reset(); |
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|
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iSlots.AddFirst( *aNode ); |
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} |
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} |
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|
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// End-of-file |