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// Copyright (c) 2004-2009 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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/**
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@file
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@internalComponent
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*/
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#include "utils.h"
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#include <e32msgqueue.h>
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#include <bluetooth/logger.h>
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#ifdef __FLOG_ACTIVE
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_LIT8(KLogComponent, LOG_COMPONENT_REMCON_UTILS);
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#endif
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#ifdef _DEBUG
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PANICCATEGORY("RCFUtils");
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#endif
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/**
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Function passed in as a parameter to TCleanupItem constructor to reset and
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destroy the received aPtr.
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@param aPtr A pointer to the object that is to be cleaned up
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*/
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void ResetAndDestroy(TAny* aPtr)
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{
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ASSERT_DEBUG(aPtr);
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reinterpret_cast<RImplInfoPtrArray*>(aPtr)->ResetAndDestroy();
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}
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/**
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Function that creates a cleanup item for aArray and specifies the cleanup
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function as ResetAndDestroy. When the item is removed from the cleanup stack
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the function ResetAndDestroy will be called on aArray.
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@param aArray The array to be destroyed.
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*/
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void CleanupResetAndDestroyPushL(RImplInfoPtrArray& aArray)
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{
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TCleanupItem item(ResetAndDestroy, &aArray);
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CleanupStack::PushL(item);
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}
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void SwitchHeap(TAny* aPtr)
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{
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ASSERT_DEBUG(aPtr);
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User::SwitchHeap(reinterpret_cast<RHeap*>(aPtr));
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}
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void CleanupSwitchHeapPushL(RHeap& aHeap)
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{
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TCleanupItem item(SwitchHeap, &aHeap);
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CleanupStack::PushL(item);
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}
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RNestableLock::RNestableLock()
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: iThreadId(KInvalidThreadId)
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, iRefCount(0)
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{
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LOG_FUNC
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}
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TInt RNestableLock::CreateLocal()
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{
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TInt err = iLock.CreateLocal();
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if(err == KErrNone)
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{
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err = iMetaLock.CreateLocal();
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}
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if(err != KErrNone)
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{
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Close();
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}
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return err;
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}
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void RNestableLock::Close()
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{
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LOG_FUNC
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iLock.Close();
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iMetaLock.Close();
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iRefCount = 0;
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iThreadId = TThreadId(KInvalidThreadId);
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}
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void RNestableLock::Wait()
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{
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iMetaLock.Wait();
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TThreadId currentThreadId = RThread().Id();
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if(iThreadId == TThreadId(KInvalidThreadId) || currentThreadId != iThreadId)
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{
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iMetaLock.Signal();
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iLock.Wait();
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iMetaLock.Wait();
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iThreadId = currentThreadId;
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}
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++iRefCount;
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iMetaLock.Signal();
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}
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void RNestableLock::Signal()
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{
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iMetaLock.Wait();
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// Assert if current thread is stored current thread?
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if(--iRefCount == 0)
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{
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iLock.Signal();
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iThreadId = TThreadId(KInvalidThreadId);
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}
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iMetaLock.Signal();
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}
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NONSHARABLE_CLASS(CSpecificThreadCallBackBody)
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: public CActive
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{
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public:
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static CSpecificThreadCallBackBody* NewL(const TCallBack& aCallBack, TInt aPriority);
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~CSpecificThreadCallBackBody();
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TInt Start();
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TInt CallBack();
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void HandleCancel();
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private:
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CSpecificThreadCallBackBody(const TCallBack& aCallBack, TInt aPriority);
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void ConstructL();
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TInt AsyncMessage(TInt aParam);
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private: // from CActive
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void RunL();
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void DoCancel();
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private:
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TCallBack iCallBack;
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RThread iLocalThread;
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RMsgQueue<TInt> iInbound;
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RMsgQueue<TInt> iOutbound;
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};
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RSpecificThreadCallBack::RSpecificThreadCallBack()
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: iBody(NULL)
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{
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LOG_FUNC
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}
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TInt RSpecificThreadCallBack::Create(const TCallBack& aCallBack, TInt aPriority)
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{
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TRAPD(err, iBody = CSpecificThreadCallBackBody::NewL(aCallBack, aPriority));
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return err;
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}
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void RSpecificThreadCallBack::Close()
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{
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LOG_FUNC
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delete iBody;
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iBody = NULL;
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}
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TInt RSpecificThreadCallBack::Start()
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{
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ASSERT_DEBUG(iBody);
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return iBody->Start();
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}
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TInt RSpecificThreadCallBack::CallBack()
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{
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ASSERT_DEBUG(iBody);
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return iBody->CallBack();
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}
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void RSpecificThreadCallBack::Cancel()
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{
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ASSERT_DEBUG(iBody);
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return iBody->HandleCancel();
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}
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CSpecificThreadCallBackBody* CSpecificThreadCallBackBody::NewL(const TCallBack& aCallBack, TInt aPriority)
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{
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LOG_STATIC_FUNC
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CSpecificThreadCallBackBody* self = new(ELeave) CSpecificThreadCallBackBody(aCallBack, aPriority);
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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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CSpecificThreadCallBackBody::CSpecificThreadCallBackBody(const TCallBack& aCallBack, TInt aPriority)
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: CActive(aPriority)
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, iCallBack(aCallBack)
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{
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LOG_FUNC
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}
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void CSpecificThreadCallBackBody::ConstructL()
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{
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User::LeaveIfError(iInbound.CreateLocal(1));
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User::LeaveIfError(iOutbound.CreateLocal(1));
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}
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CSpecificThreadCallBackBody::~CSpecificThreadCallBackBody()
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{
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LOG_FUNC
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HandleCancel();
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iInbound.Close();
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iOutbound.Close();
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iLocalThread.Close();
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}
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TInt CSpecificThreadCallBackBody::Start()
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{
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TInt err = KErrNone;
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if(!IsAdded())
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{
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err = iLocalThread.Duplicate(RThread());
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if(err == KErrNone)
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{
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CActiveScheduler::Add(this);
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iInbound.NotifyDataAvailable(iStatus);
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SetActive();
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}
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}
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return err;
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}
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TInt CSpecificThreadCallBackBody::CallBack()
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{
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TInt err = KErrUnknown;
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if(iLocalThread.Id() == RThread().Id())
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{
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// Simple synchronous case.
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err = iCallBack.CallBack();
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}
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else
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{
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RThread thisThread;
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err = thisThread.Duplicate(RThread());
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if(err == KErrNone)
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{
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err = AsyncMessage(thisThread.Handle());
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}
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}
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return err;
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}
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TInt CSpecificThreadCallBackBody::AsyncMessage(TInt aParam)
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{
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TInt err = KErrNone;
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TRequestStatus logonStatus;
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iLocalThread.Logon(logonStatus);
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if(logonStatus == KErrNoMemory)
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{
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// This seems kludgy, but I think it is the most reliable way.
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User::WaitForRequest(logonStatus); // Ensure the all requests are correct...
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err = KErrNoMemory;
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}
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else
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{
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iInbound.SendBlocking(aParam);
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TRequestStatus status;
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iOutbound.NotifyDataAvailable(status);
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User::WaitForRequest(status, logonStatus);
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if(status == KRequestPending)
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{
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// Remote thread is dead
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iOutbound.CancelDataAvailable();
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User::WaitForRequest(status);
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err = KErrDied;
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}
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else
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{
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// Success (the thread may have subsequently died, but we are only concerned with this call).
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iLocalThread.LogonCancel(logonStatus);
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User::WaitForRequest(logonStatus);
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err = status.Int();
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if(err == KErrNone)
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{
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iOutbound.ReceiveBlocking(err);
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}
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}
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}
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return err;
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}
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void CSpecificThreadCallBackBody::RunL()
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{
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TInt threadHandle;
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iInbound.ReceiveBlocking(threadHandle);
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if(threadHandle == 0)
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{
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// 0 is a cancel message
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// therefore don't do anything
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iOutbound.SendBlocking(KErrNone);
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}
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else
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{
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RThread remoteThread;
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remoteThread.SetHandleNC(threadHandle);
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TInt result = iCallBack.CallBack();
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// There doesn't seem to be a safe way of handling when the other thread
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// dies......
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iOutbound.SendBlocking(result);
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remoteThread.Close();
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iInbound.NotifyDataAvailable(iStatus);
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SetActive();
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}
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}
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void CSpecificThreadCallBackBody::DoCancel()
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{
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if(RThread().Id() == iLocalThread.Id())
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{
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iInbound.CancelDataAvailable();
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}
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else
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{
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// other thread cancelling - so just complete the
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// request
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TRequestStatus* status = &iStatus;
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User::RequestComplete(status, KErrCancel);
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}
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}
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void CSpecificThreadCallBackBody::HandleCancel()
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{
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if(IsAdded())
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{
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if(RThread().Id() == iLocalThread.Id())
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{
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Cancel(); // synchronous cancel is fine in same thread...
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}
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else
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{
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// In a different thread - this is more interesting...
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TInt err = AsyncMessage(0); // 0 is special as it means cancel.
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if(err == KErrDied && IsActive())
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{
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// Remote thread has already died so we need to tidy up the
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// active object ourselves.
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Cancel();
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}
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}
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}
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// else shouldn't be active...
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}
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#ifdef _DEBUG
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_LIT(KCountSizeWriteStreamPanic, "CountStream");
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#endif // _DEBUG
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#define ASSERT_NOT_CALLED __ASSERT_DEBUG(EFalse, User::Panic(KCountSizeWriteStreamPanic, 0));
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RCountSizeWriteStream::RCountSizeWriteStream()
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: RWriteStream()
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, iSize(0)
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{
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Attach(this);
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}
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TInt RCountSizeWriteStream::Size() const
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{
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return iSize;
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}
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void RCountSizeWriteStream::Reset()
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{
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iSize = 0;
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}
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void RCountSizeWriteStream::DoRelease()
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{
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// No resources to free - Nothing to do
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}
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void RCountSizeWriteStream::DoSynchL()
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{
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// No buffering - Nothing to do
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}
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TInt RCountSizeWriteStream::DoReadL(TAny* /*aPtr*/,TInt /*aMaxLength*/)
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{
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LOG_FUNC
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ASSERT_NOT_CALLED;
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User::Leave(KErrNotSupported);
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return 0;
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}
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TInt RCountSizeWriteStream::DoReadL(TDes8& /*aDes*/,TInt /*aMaxLength*/,TRequestStatus& /*aStatus*/)
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{
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LOG_FUNC
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ASSERT_NOT_CALLED;
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User::Leave(KErrNotSupported);
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return 0;
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}
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TStreamTransfer RCountSizeWriteStream::DoReadL(MStreamInput& /*anInput*/,TStreamTransfer /*aTransfer*/)
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{
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LOG_FUNC
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ASSERT_NOT_CALLED;
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User::Leave(KErrNotSupported);
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return 0;
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}
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void RCountSizeWriteStream::DoWriteL(const TAny* /*aPtr*/,TInt aLength)
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{
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iSize += aLength;
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}
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TInt RCountSizeWriteStream::DoWriteL(const TDesC8& /*aDes*/,TInt aMaxLength,TRequestStatus& aStatus)
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{
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iSize += aMaxLength;
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TRequestStatus* stat = &aStatus;
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User::RequestComplete(stat, KErrNone);
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return aMaxLength;
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}
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TStreamTransfer RCountSizeWriteStream::DoWriteL(MStreamOutput& /*anOutput*/,TStreamTransfer /*aTransfer*/)
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{
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ASSERT_NOT_CALLED;
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User::Leave(KErrNotSupported);
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return 0;
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}
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TStreamPos RCountSizeWriteStream::DoSeekL(TMark /*aMark*/,TStreamLocation /*aLocation*/,TInt /*anOffset*/)
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{
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ASSERT_NOT_CALLED;
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User::Leave(KErrNotSupported);
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return 0;
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}
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#undef ASSERT_NOT_CALLED
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