author | hgs |
Fri, 08 Oct 2010 14:33:25 +0300 | |
changeset 76 | cb32bcc88bad |
parent 0 | 4e1aa6a622a0 |
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// Copyright (c) 2007-2010 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 "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: |
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// |
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#include <ssm/ssmstateawaresession.h> |
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#include "ssmstatemonitor.h" |
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#include "cmnpanic.h" |
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#include "ssmdebug.h" |
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/** |
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*/ |
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CSsmStateMonitor* CSsmStateMonitor::NewL(CSsmStateAwareSession& aObserver, TDmDomainId aId) |
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{ |
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CSsmStateMonitor* self = new (ELeave) CSsmStateMonitor(aObserver); |
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CleanupStack::PushL(self); |
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self->ConstructL(aId); |
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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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*/ |
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CSsmStateMonitor::CSsmStateMonitor(CSsmStateAwareSession& aObserver) : |
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CActive(CActive::EPriorityStandard), |
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iObserver(aObserver) |
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{ |
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CActiveScheduler::Add(this); |
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} |
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/** |
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*/ |
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CSsmStateMonitor::~CSsmStateMonitor() |
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{ |
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Cancel(); |
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iSas.Close(); |
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} |
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/** |
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*/ |
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void CSsmStateMonitor::ConstructL(TDmDomainId aId) |
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{ |
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SSMLOGLEAVEIFERROR(iSas.Connect(aId)); //will leave in release builds as well |
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//Setup change subscription |
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iStatus = KRequestPending; |
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iSas.RequestStateNotification(iStatus); |
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SetActive(); |
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//Read current state and store locally |
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iState = iSas.State(); |
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} |
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/** |
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*/ |
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void CSsmStateMonitor::DoCancel() |
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{ |
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iSas.RequestStateNotificationCancel(); |
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} |
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/** |
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*/ |
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void CSsmStateMonitor::RunL() |
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{ |
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SSMLOGLEAVEIFERROR(iStatus.Int()); |
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//Re-issue a subscription request before retrieving the current value |
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iStatus = KRequestPending; |
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iSas.AcknowledgeAndRequestStateNotification(KErrNone, iStatus); |
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SetActive(); |
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//Update local copy |
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iState = iSas.State(); |
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//Notify our clients |
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iObserver.NotifySubscribers(iState); |
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} |
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/** |
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@panic ECmnStateMonError1 if an error occurs in RunL |
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*/ |
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TInt CSsmStateMonitor::RunError(TInt aError) |
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{ |
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iSas.AcknowledgeStateNotification(aError); |
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DEBUGPRINT2A("CSsmStateMonitor::RunError: %d", aError); |
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User::Panic(KPanicSsmCmn, ECmnStateMonError1); //A panic here is easier to track than a panic in CActiveScheduler |
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return aError; //lint !e527 Unreachable |
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} |
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/** |
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*/ |
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TSsmState CSsmStateMonitor::State() const |
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{ |
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return iState; |
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} |
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CSsmDeferralMonitor::CSsmDeferralMonitor(RSsmStateAwareSession& aStateAwareSession, CSsmStateAwareSession2& aOwnerActiveObject) |
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: CActive(CActive::EPriorityHigh), iSsmStateAwareSession(aStateAwareSession), iOwnerActiveObject(aOwnerActiveObject), iCeaseDeferral(EFalse) |
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{ |
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CActiveScheduler::Add(this); |
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} |
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CSsmDeferralMonitor::~CSsmDeferralMonitor() |
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{ |
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Cancel(); |
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} |
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/** |
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* Defers the Acknowledgement. |
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*/ |
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void CSsmDeferralMonitor::DeferNotification() |
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{ |
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__ASSERT_ALWAYS(!IsActive(), User::Panic(KPanicSsmCmn, ECmnErrDeferNotif)); |
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iSsmStateAwareSession.DeferAcknowledgement(iStatus); |
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SetActive(); |
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} |
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/** |
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Informs the object that the state transition has |
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been _successfully_ acknowledged |
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*/ |
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void CSsmDeferralMonitor::NotifyOfAcknowledgement() |
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{ |
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if (IsActive()) |
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{ |
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iCeaseDeferral = ETrue; |
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} |
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} |
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void CSsmDeferralMonitor::RunL() |
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{ |
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const TInt error = iStatus.Int(); |
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TBool ceaseDeferral = iCeaseDeferral; |
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iCeaseDeferral = EFalse; |
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// We are leaving with error after resetting iCeaseDeferral. This is because |
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// we might again RequestStateNotification() in HandleDeferralError(), in which case |
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// we need to reset iCeaseDeferral to EFalse so that deferral may happen again. |
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User::LeaveIfError(error); |
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if(!ceaseDeferral) |
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{ |
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DeferNotification(); |
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} |
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else |
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{ |
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// At this point we know error == KErrNone |
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// However, we return the error code KErrCompletion, as this |
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// is what would have happened, had the acknowledgment come in |
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// a little earlier, |
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// whilst the deferral was still outstanding on the server. |
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User::Leave(KErrCompletion); |
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} |
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} |
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/** |
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Handle errors thrown from RunL() - call HandleDeferralErrror() |
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*/ |
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TInt CSsmDeferralMonitor::RunError(TInt aError) |
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{ |
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DEBUGPRINT2A("CSsmDeferralMonitor::RunError: %d", aError); |
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return iOwnerActiveObject.HandleDeferralError(aError); |
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} |
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/** |
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* Cancels the outstanding deferral request. |
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*/ |
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void CSsmDeferralMonitor::DoCancel() |
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{ |
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iSsmStateAwareSession.CancelDeferral(); |
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} |
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