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// Copyright (c) 2002-2009 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 "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 <mmf/server/mmfsubthreadbase.h>
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#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS
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#include <mmf/server/mmfsubthreadbaseimpl.h>
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#endif
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EXPORT_C void RMMFSubThreadBase::ReceiveEvents(TMMFEventPckg& aEventPckg, TRequestStatus& aStatus)
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{
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SendReceiveResult(EMMFSubThreadReceiveEvents, aEventPckg, aStatus);
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}
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EXPORT_C TInt RMMFSubThreadBase::CancelReceiveEvents()
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{
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return SendReceive(EMMFSubThreadCancelReceiveEvents);
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}
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EXPORT_C void RMMFSubThreadBase::Shutdown()
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{
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if (iSubThread.Handle() != KNullHandle)
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{
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// check that the subthread has yet to terminate
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if (iLogonStatus == KRequestPending)
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{
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//close the subthread and wait for its exit.
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//signal to the subthread to close down.
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TInt shutdownError = SendReceive(EMMFSubThreadShutdown);
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if (shutdownError != KErrNone)
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{
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iSubThread.LogonCancel(iLogonStatus);
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}
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else
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{
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RTimer timer;
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TInt err = timer.CreateLocal();
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//if we managed to create the timer, wait for both the death and the timeout to minimise the risk of deadlock
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if (!err)
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{
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TRequestStatus timeout;
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timer.After(timeout, iShutdownTimeout);
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User::WaitForRequest(iLogonStatus, timeout);
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if (iLogonStatus == KRequestPending)
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{
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//we have timed out. Panic the thread in debug mode, kill it in release mode.
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iSubThread.LogonCancel(iLogonStatus);
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User::WaitForRequest(iLogonStatus);
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#ifdef _DEBUG
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Panic(EMMFSubThreadPanicTimedOut);
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#else
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iSubThread.Kill(KErrDied);
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#endif
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}
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else
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{
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//subthread has exited. Cancel the timer.
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timer.Cancel();
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User::WaitForRequest(timeout);
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}
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}
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else
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{
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//we have no timer so we'll just have to risk the deadlock
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User::WaitForRequest(iLogonStatus);
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}
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timer.Close();
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}
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}
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//close the handle to the subthread
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iSubThread.Close();
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}
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// close our parent
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RHandleBase::Close();
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}
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void RMMFSubThreadBase::Panic(TMMFSubThreadPanicCode aPanicCode)
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{
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_LIT(KMMFSubThreadPanicCategory, "MMFSubThread");
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iSubThread.Panic(KMMFSubThreadPanicCategory, aPanicCode);
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}
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TInt RMMFSubThreadBase::DoCreateSubThread(const TDesC& aName, TThreadFunction aFunction, TBool aUseNewHeap)
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{
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TInt error = KErrNone;
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if (aUseNewHeap)
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{
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error = iSubThread.Create(aName, aFunction,
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KDefaultStackSize, KMinHeapSize, KMMFSubThreadMaxHeapSize,
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NULL, EOwnerThread);
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}
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else
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{
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error = iSubThread.Create(aName, aFunction,
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KDefaultStackSize, &User::Heap(),
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NULL, EOwnerThread);
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}
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if (error)
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{
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return error;
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}
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TRequestStatus rendezvous;
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iSubThread.Rendezvous(rendezvous);
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if (rendezvous != KRequestPending)
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{
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iSubThread.Kill(0);
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}
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else
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{
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iLogonStatus = KRequestPending;
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iSubThread.Logon(iLogonStatus);
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if (iLogonStatus != KRequestPending)
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{
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// Failed to log on
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iSubThread.RendezvousCancel(rendezvous);
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User::WaitForRequest(rendezvous);
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iSubThread.Kill(0);
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iSubThread.Close();
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return iLogonStatus.Int();
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}
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else
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{
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iSubThread.Resume();
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}
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}
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User::WaitForRequest(rendezvous); // wait for start or death
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if (rendezvous != KErrNone)
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{
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iSubThread.LogonCancel(iLogonStatus);
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User::WaitForRequest(iLogonStatus);
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iSubThread.Close();
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return rendezvous.Int();
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}
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return KErrNone;
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}
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CMMFSubThreadShutdown* CMMFSubThreadShutdown::NewL()
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{
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CMMFSubThreadShutdown* s = new(ELeave) CMMFSubThreadShutdown();
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CleanupStack::PushL(s);
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s->ConstructL();
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CleanupStack::Pop();
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return s;
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}
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CMMFSubThreadShutdown::CMMFSubThreadShutdown() :
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CTimer(EPriorityLow)
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{
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CActiveScheduler::Add(this);
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}
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void CMMFSubThreadShutdown::ConstructL()
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{
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CTimer::ConstructL();
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}
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void CMMFSubThreadShutdown::Start()
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{
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After(EMMFSubThreadShutdownDelay);
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}
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void CMMFSubThreadShutdown::RunL()
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{
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ShutdownNow();
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}
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void CMMFSubThreadShutdown::ShutdownNow()
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{
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CActiveScheduler::Stop();
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}
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CMMFSubThreadServer::CMMFSubThreadServer(TInt aPriority) :
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CMmfIpcServer(aPriority)
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{
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}
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void CMMFSubThreadServer::ConstructL()
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{
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StartL(RThread().Name());
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iShutdownTimer = CMMFSubThreadShutdown::NewL();
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iShutdownTimer->Start();
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}
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CMMFSubThreadServer::~CMMFSubThreadServer()
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{
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delete iShutdownTimer;
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}
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void CMMFSubThreadServer::SessionCreated()
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{
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//stop the shutdown timer
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iShutdownTimer->Cancel();
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}
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void CMMFSubThreadServer::ShutdownNow()
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{
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iShutdownTimer->ShutdownNow();
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}
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TInt CMMFSubThreadServer::RunError(TInt aError)
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{
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//signal the client
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Message().Complete(aError);
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ReStart();
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return KErrNone;
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}
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CMMFSubThreadEventReceiver* CMMFSubThreadEventReceiver::NewL(const RMmfIpcMessage& aMessage)
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{
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return new(ELeave) CMMFSubThreadEventReceiver(aMessage);
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}
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CMMFSubThreadEventReceiver::~CMMFSubThreadEventReceiver()
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{
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if (iNeedToCompleteMessage)
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iMessage.Complete(KErrDied);
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}
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void CMMFSubThreadEventReceiver::SendEvent(const TMMFEvent& aEvent)
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{
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TMMFEventPckg eventpckg(aEvent);
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TRAPD(err, MmfMessageUtil::WriteL(iMessage, 0, eventpckg));
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iMessage.Complete(err);
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iNeedToCompleteMessage = EFalse;
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}
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CMMFSubThreadEventReceiver::CMMFSubThreadEventReceiver(const RMmfIpcMessage& aMessage) :
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iMessage(aMessage)
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{
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iNeedToCompleteMessage = ETrue;
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}
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void CMMFSubThreadSession::CreateL(const CMmfIpcServer& aServer)
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{
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CMmfIpcSession::CreateL(aServer);
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iServer = STATIC_CAST(CMMFSubThreadServer*, (CONST_CAST(CMmfIpcServer*, &aServer)));
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iServer->SessionCreated();
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}
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CMMFSubThreadSession::~CMMFSubThreadSession()
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{
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delete iEventReceiver;
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iEvents.Close();
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}
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TBool CMMFSubThreadSession::ReceiveEventsL(const RMmfIpcMessage& aMessage)
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{
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if (iEventReceiver)
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User::Leave(KErrAlreadyExists);
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iEventReceiver = CMMFSubThreadEventReceiver::NewL(aMessage);
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//send the next cached event (if any) to the client
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if (iEvents.Count() > 0)
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{
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TMMFEvent& event = iEvents[0];
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iEventReceiver->SendEvent(event);
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delete iEventReceiver;
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iEventReceiver=NULL;
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iEvents.Remove(0);
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}
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return EFalse;
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}
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TBool CMMFSubThreadSession::CancelReceiveEvents()
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{
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delete iEventReceiver;
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iEventReceiver = NULL;
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return ETrue;
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}
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TBool CMMFSubThreadSession::ShutDown()
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{
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iServer->ShutdownNow();
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return ETrue;
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}
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TInt CMMFSubThreadSession::SendEventToClient(const TMMFEvent& aEvent)
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{
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TInt error = KErrNone;
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if (iEventReceiver)
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{
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//send event to client now
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iEventReceiver->SendEvent(aEvent);
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delete iEventReceiver;
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iEventReceiver=NULL;
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error = KErrNone;
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}
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else
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{
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//queue the request for later
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TMMFEvent event(aEvent);
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//if we've exceeded the max number of cached messages, delete the first and append this one to the end
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if (iEvents.Count() >= KMMFSubThreadMaxCachedMessages)
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iEvents.Remove(0);
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error = iEvents.Append(event);
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}
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return error;
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}
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