author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 19 Mar 2010 10:03:22 +0200 | |
changeset 13 | ab7247ff6ef9 |
parent 0 | c40eb8fe8501 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2002-2010 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: Active object to get notification of system time change. |
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* |
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*/ |
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/* |
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* %version: 4 % |
0
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*/ |
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// INCLUDE FILES |
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#include <e32std.h> |
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#include "wlansystemtimehandler.h" |
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#include "am_debug.h" |
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/** |
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* Region cache should expire after 5 hours and therefore |
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* 30 min timer is set 10 times |
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*/ |
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const TInt KRegionCacheClearingTimer = 1800*1000000; // 30 min |
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const TInt KRegionCacheClearingTimerCount = 10; |
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/** |
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* Two year timeout used to receive notification about system time change |
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*/ |
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const TInt KWlanSystemTimeHandlerTimeoutTwoYears = 2; |
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|
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#ifdef _DEBUG |
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/** |
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* Formatting of date time debug string. |
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*/ |
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_LIT( KWlanSystemTimeHandlerDateTimeFormat, "%F %*E %*N %Y %H:%T:%S" ); |
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/** |
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* Maximun length for date time debug string. |
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*/ |
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const TInt KWlanSystemTimeHandlerMaxDateTimeStrLen = 50; |
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#endif |
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// ================= MEMBER FUNCTIONS ======================= |
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// C++ default constructor can NOT contain any code, that |
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// might leave. |
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// |
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CWlanSystemTimeHandler::CWlanSystemTimeHandler( |
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MWlanSystemTimeCallback& aClient ) : |
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CActive( CActive::EPriorityStandard ), |
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iClient( aClient ) |
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{ |
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DEBUG( "CWlanSystemTimeHandler::CWlanSystemTimeHandler()" ); |
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} |
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// Static constructor. |
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CWlanSystemTimeHandler* CWlanSystemTimeHandler::NewL( |
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MWlanSystemTimeCallback& aClient) |
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{ |
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DEBUG( "CWlanSystemTimeHandler::NewL()" ); |
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CWlanSystemTimeHandler* self = |
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new (ELeave) CWlanSystemTimeHandler( aClient ); |
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CleanupStack::PushL( self ); |
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self->ConstructL(); |
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CleanupStack::Pop( self ); |
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return self; |
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} |
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// Symbian 2nd phase constructor can leave. |
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void CWlanSystemTimeHandler::ConstructL() |
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{ |
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DEBUG( "CWlanSystemTimeHandler::ConstructL()" ); |
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CActiveScheduler::Add( this ); |
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User::LeaveIfError( iTimer.CreateLocal() ); |
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} |
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// Destructor |
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CWlanSystemTimeHandler::~CWlanSystemTimeHandler() |
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{ |
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DEBUG( "CWlanSystemTimeHandler::~CWlanSystemTimeHandler()" ); |
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Cancel(); |
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iTimer.Close(); |
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} |
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// --------------------------------------------------------- |
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// CWlanSystemTimeHandler::DoCancel |
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// Release synchronise call. Is called by CActive::Cancel() |
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// --------------------------------------------------------- |
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// |
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void CWlanSystemTimeHandler::DoCancel() |
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{ |
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DEBUG( "CWlanSystemTimeHandler::DoCancel()" ); |
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iTimer.Cancel(); |
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} |
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// --------------------------------------------------------- |
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// CWlanSystemTimeHandler::StartTimer |
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// --------------------------------------------------------- |
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// |
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TInt CWlanSystemTimeHandler::StartTimer() |
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{ |
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TTime timeout; |
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timeout.HomeTime(); |
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timeout += TTimeIntervalYears( KWlanSystemTimeHandlerTimeoutTwoYears ); |
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|
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/** |
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* Set timeout to two years from now, just to receive notification when |
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* system time changes. |
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*/ |
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iTimer.At(iStatus, timeout ); |
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|
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SetActive(); |
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|
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#ifdef _DEBUG |
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TBuf<KWlanSystemTimeHandlerMaxDateTimeStrLen> timeoutAt; |
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TRAP_IGNORE( timeout.FormatL( timeoutAt, KWlanSystemTimeHandlerDateTimeFormat ) ); |
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DEBUG1( "CWlanSystemTimeHandler::Start() - system time change notification timer started, timeout at: %S", &timeoutAt ); |
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#endif |
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|
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return KErrNone; |
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} |
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|
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// --------------------------------------------------------- |
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// CWlanSystemTimeHandler::StopTimer |
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// --------------------------------------------------------- |
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// |
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void CWlanSystemTimeHandler::StopTimer() |
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{ |
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DEBUG( "CWlanSystemTimeHandler::StopTimer()" ); |
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Cancel(); |
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} |
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141 |
|
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// --------------------------------------------------------- |
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// CWlanSystemTimeHandler::RunL |
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// --------------------------------------------------------- |
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// |
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void CWlanSystemTimeHandler::RunL() |
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{ |
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DEBUG1( "CWlanSystemTimeHandler::RunL() - iStatus: %d", iStatus.Int() ); |
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149 |
|
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switch( iStatus.Int() ) |
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{ |
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case KErrAbort: |
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{ |
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DEBUG( "CWlanSystemTimeHandler::RunL() - system time changed, informing client" ); |
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/** |
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* RTimer is aborted when system time changes. |
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* |
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* Inform client that system time has now been changed. |
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*/ |
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iClient.OnSystemTimeChange(); |
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// falls through on purpose |
0
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} |
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case KErrNone: |
0
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{ |
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Cancel(); |
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|
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TTime newTimeout; |
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newTimeout.HomeTime(); |
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newTimeout += TTimeIntervalYears( KWlanSystemTimeHandlerTimeoutTwoYears ); |
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|
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/** |
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* Set new timeout to two years from now, just to receive notification when |
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* system time changes next time. |
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*/ |
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iTimer.At( iStatus, newTimeout ); |
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|
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SetActive(); |
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|
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#ifdef _DEBUG |
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TBuf<KWlanSystemTimeHandlerMaxDateTimeStrLen> timeoutAt; |
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TRAP_IGNORE( newTimeout.FormatL( timeoutAt, KWlanSystemTimeHandlerDateTimeFormat ) ); |
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DEBUG1( "CWlanSystemTimeHandler::RunL() - system time change notification timer restarted, timeout at: %S", &timeoutAt ); |
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#endif |
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|
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break; |
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} |
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default: |
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{ |
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DEBUG( "CWlanSystemTimeHandler::RunL() - ERROR: problem setting up system time change notifications, notifications are now disabled" ); |
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Cancel(); |
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} |
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} |
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} |
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|
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// ================= MEMBER FUNCTIONS ======================= |
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|
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// C++ default constructor can NOT contain any code, that |
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// might leave. |
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// |
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CWlanPeriodicCacheClearingHandler::CWlanPeriodicCacheClearingHandler( |
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MWlanSystemTimeCallback& aClient ) : |
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CActive( CActive::EPriorityStandard ), |
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iClearTimerCounter( 0 ), |
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iClient( aClient ) |
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{ |
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DEBUG( "CWlanPeriodicCacheClearingHandler::CWlanPeriodicCacheClearingHandler()" ); |
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} |
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|
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// Static constructor. |
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CWlanPeriodicCacheClearingHandler* CWlanPeriodicCacheClearingHandler::NewL( |
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MWlanSystemTimeCallback& aClient) |
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{ |
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DEBUG( "CWlanPeriodicCacheClearingHandler::NewL()" ); |
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CWlanPeriodicCacheClearingHandler* self = |
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new (ELeave) CWlanPeriodicCacheClearingHandler( aClient ); |
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CleanupStack::PushL( self ); |
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self->ConstructL(); |
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CleanupStack::Pop( self ); |
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return self; |
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} |
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|
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// Symbian 2nd phase constructor can leave. |
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void CWlanPeriodicCacheClearingHandler::ConstructL() |
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{ |
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DEBUG( "CWlanPeriodicCacheClearingHandler::ConstructL()" ); |
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|
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CActiveScheduler::Add( this ); |
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User::LeaveIfError( iClearTimer.CreateLocal() ); |
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} |
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|
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// Destructor |
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CWlanPeriodicCacheClearingHandler::~CWlanPeriodicCacheClearingHandler() |
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{ |
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DEBUG( "CWlanPeriodicCacheClearingHandler::~CWlanPeriodicCacheClearingHandler()" ); |
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|
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Cancel(); |
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iClearTimer.Close(); |
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} |
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|
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// --------------------------------------------------------- |
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// CWlanPeriodicCacheClearingHandler::DoCancel |
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// Release synchronise call. Is called by CActive::Cancel() |
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// --------------------------------------------------------- |
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// |
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void CWlanPeriodicCacheClearingHandler::DoCancel() |
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{ |
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DEBUG( "CWlanPeriodicCacheClearingHandler::DoCancel()" ); |
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iClearTimer.Cancel(); |
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} |
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|
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// --------------------------------------------------------- |
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// CWlanPeriodicCacheClearingHandler::StartTimer |
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// --------------------------------------------------------- |
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// |
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TInt CWlanPeriodicCacheClearingHandler::StartTimer() |
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{ |
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DEBUG( "CWlanPeriodicCacheClearingHandler::StartTimer()" ); |
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|
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// Issue an Asynchronous Request |
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iClearTimer.After(iStatus, KRegionCacheClearingTimer); |
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|
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// set it to active once request is issued |
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SetActive(); |
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|
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return KErrNone; |
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} |
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|
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// --------------------------------------------------------- |
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// CWlanPeriodicCacheClearingHandler::StopTimer |
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// --------------------------------------------------------- |
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// |
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void CWlanPeriodicCacheClearingHandler::StopTimer() |
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{ |
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DEBUG( "CWlanPeriodicCacheClearingHandler::StopTimer()" ); |
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Cancel(); |
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iClearTimerCounter = 0; |
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} |
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|
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// --------------------------------------------------------- |
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// CWlanPeriodicCacheClearingHandler::RunL |
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// Timer has expired. |
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// --------------------------------------------------------- |
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// |
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void CWlanPeriodicCacheClearingHandler::RunL() |
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{ |
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DEBUG( "CWlanPeriodicCacheClearingHandler::RunL()" ); |
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|
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// This is the case when system time is changed and |
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// hence will cause the timer to abort with KErrAbort. |
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|
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if( iStatus.Int() == KErrNone && |
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iClearTimerCounter < KRegionCacheClearingTimerCount-1) |
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{ |
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iClearTimerCounter += 1; |
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|
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// Issue an Asynchronous Request |
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iClearTimer.After(iStatus, KRegionCacheClearingTimer); |
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|
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// set it to active once request is issued |
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SetActive(); |
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|
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} |
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else if ( iStatus.Int() == KErrNone && |
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iClearTimerCounter >= KRegionCacheClearingTimerCount-1 ) |
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{ |
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/* Inform client that system time has been changed so that |
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* region information cache can be cleared. |
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*/ |
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iClient.OnCacheClearTimerExpiration(); |
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iClearTimerCounter = 0; |
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} |
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else |
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{ |
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DEBUG( "CWlanPeriodicCacheClearingHandler::RunL() - time expired" ); |
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} |
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} |
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