kernel/eka/nkernsmp/nkerns.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 09:24:54 +0200
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// Copyright (c) 2005-2009 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 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:
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// e32\nkernsmp\nkerns.cpp
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// 
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//
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// NThreadBase member data
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#define __INCLUDE_NTHREADBASE_DEFINES__
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#include <e32cmn.h>
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#include <e32cmn_private.h>
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#include "nk_priv.h"
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extern "C" void ExcFault(TAny*);
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/******************************************************************************
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 * Fast mutex
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 ******************************************************************************/
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/** Create a fast mutex
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	@publishedPartner
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	@released
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*/
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EXPORT_C NFastMutex::NFastMutex()
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	: iHoldingThread(0), iMutexLock(TSpinLock::EOrderFastMutex)
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	{
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	}
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/******************************************************************************
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 * NSchedulable
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 ******************************************************************************/
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NSchedulable::NSchedulable()
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	:	iSSpinLock(TSpinLock::EOrderThread)
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	{
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	iPriority = 0;
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	iReady = 0;
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	iCurrent = 0;
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	iLastCpu = 0;
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	iNSchedulableSpare1 = 0;
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	iPauseCount = 0;
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	iSuspended = 0;
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	iNSchedulableSpare2 = 0;
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	iCpuChange = 0;
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	iStopping = 0;
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	iFreezeCpu = 0;
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	iParent = (NSchedulable*)0xdeadbeef;
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	iCpuAffinity = 0;
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	new (i_IDfcMem) TDfc(&DeferredReadyIDfcFn, this);
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	iEventState = 0;
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	iTotalCpuTime64 = 0;
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	}
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/******************************************************************************
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 * NThreadGroup
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 ******************************************************************************/
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NThreadGroup::NThreadGroup()
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	{
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	iParent = 0;
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	iThreadCount = 0;
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	new (&iSSpinLock) TSpinLock(TSpinLock::EOrderThreadGroup);
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	}
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/** Create a thread group
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	@publishedPartner
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	@prototype
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*/
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EXPORT_C TInt NKern::GroupCreate(NThreadGroup* aGroup, SNThreadGroupCreateInfo& aInfo)
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	{
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	new (aGroup) NThreadGroup();
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	aGroup->iCpuAffinity = aInfo.iCpuAffinity;
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	return KErrNone;
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	}
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/** Destroy a thread group
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	@pre Call in thread context, interrupts enabled, preemption enabled
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	@pre No fast mutex held
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	@pre Calling thread in critical section
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	@pre All threads have left the group
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	@publishedPartner
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	@prototype
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*/
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EXPORT_C void NKern::GroupDestroy(NThreadGroup* aGroup)
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	{
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	NKern::ThreadEnterCS();
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	aGroup->DetachTiedEvents();
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	NKern::ThreadLeaveCS();
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	}
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/******************************************************************************
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 * Thread
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 ******************************************************************************/
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void InvalidExec()
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	{
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	FAULT();
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	}
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static const SFastExecTable DefaultFastExecTable={0,{0}};
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static const SSlowExecTable DefaultSlowExecTable={0,(TLinAddr)InvalidExec,0,{{0,0}}};
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   115
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const SNThreadHandlers NThread_Default_Handlers =
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	{
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	NTHREAD_DEFAULT_EXIT_HANDLER,
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	NTHREAD_DEFAULT_STATE_HANDLER,
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	NTHREAD_DEFAULT_EXCEPTION_HANDLER,
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	NTHREAD_DEFAULT_TIMEOUT_HANDLER
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	};
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NThreadWaitState::NThreadWaitState()
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	:	iTimer(&TimerExpired, this)
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	{
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	iWtSt64 = 0;
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	iTimer.iTriggerTime = 0;
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	iTimer.iNTimerSpare1 = 0;
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	}
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NThreadBase::NThreadBase()
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	:	iRequestSemaphore(), iWaitState()
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	{
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	iParent = this;
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	iWaitLink.iPriority = 0;
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	iBasePri = 0;
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	iMutexPri = 0;
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	i_NThread_Initial = 0;
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	iLinkedObjType = EWaitNone;
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	i_ThrdAttr = 0;
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	iNThreadBaseSpare10 = 0;
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	iFastMutexDefer = 0;
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	iRequestSemaphore.iOwningThread = (NThreadBase*)this;
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	iTime = 0;
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	iTimeslice = 0;
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	iSavedSP = 0;
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	iAddressSpace = 0;
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	iHeldFastMutex = 0;
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	iUserModeCallbacks = 0;
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	iLinkedObj = 0;
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	iNewParent = 0;
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	iFastExecTable = 0;
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	iSlowExecTable = 0;
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	iCsCount = 0;
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	iCsFunction = 0;
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	iHandlers = 0;
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	iSuspendCount = 0;
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	iStackBase = 0;
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	iStackSize = 0;
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	iExtraContext = 0;
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	iExtraContextSize = 0;
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	iNThreadBaseSpare6 = 0;
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	iNThreadBaseSpare7 = 0;
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	iNThreadBaseSpare8 = 0;
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	iNThreadBaseSpare9 = 0;
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	// KILL
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	iTag = 0;
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	iVemsData = 0;
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	}
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TInt NThreadBase::Create(SNThreadCreateInfo& aInfo, TBool aInitial)
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	{
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	__KTRACE_OPT(KNKERN,DEBUGPRINT(">NThreadBase::Create %08x(%08x,%d)", this, &aInfo, aInitial));
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	if (aInfo.iPriority<0 || aInfo.iPriority>63)
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		return KErrArgument;
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	if (aInfo.iPriority==0 && !aInitial)
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		return KErrArgument;
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//	if (aInfo.iCpu!=KCpuAny && aInfo.iCpu>=TheScheduler.iNumCpus)
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//		return KErrArgument;
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	iStackBase=(TLinAddr)aInfo.iStackBase;
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	iStackSize=aInfo.iStackSize;
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	iTimeslice=(aInfo.iTimeslice>0)?aInfo.iTimeslice:-1;
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	iTime=iTimeslice;
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	iPriority=TUint8(aInfo.iPriority);
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	iBasePri=TUint8(aInfo.iPriority);
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	iCpuAffinity = aInfo.iCpuAffinity;
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	iHandlers = aInfo.iHandlers ? aInfo.iHandlers : &NThread_Default_Handlers;
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	iFastExecTable=aInfo.iFastExecTable?aInfo.iFastExecTable:&DefaultFastExecTable;
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	iSlowExecTable=(aInfo.iSlowExecTable?aInfo.iSlowExecTable:&DefaultSlowExecTable)->iEntries;
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	i_ThrdAttr=(TUint8)aInfo.iAttributes;
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   193
	if (aInitial)
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   194
		{
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		TSubScheduler& ss = SubScheduler();
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		iLastCpu = (TUint8)ss.iCpuNum;
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		iReady = (TUint8)(iLastCpu | EReadyOffset);
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		iCurrent = iReady;
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   199
		iCpuAffinity = iLastCpu;
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		iEventState = (iLastCpu<<EEventCpuShift) | (iLastCpu<<EThreadCpuShift);
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   201
		ss.Add(this);
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   202
		i_NThread_Initial = TRUE;
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   203
		ss.iInitialThread = (NThread*)this;
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		NKern::Unlock();		// now that current thread is defined
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   205
		}
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   206
	else
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   207
		{
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		iSuspendCount = 1;
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   209
		iSuspended = 1;
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		TInt ecpu;
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		if (iCpuAffinity & NTHREADBASE_CPU_AFFINITY_MASK)
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   212
			{
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			ecpu = __e32_find_ls1_32(iCpuAffinity);
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   214
			if (ecpu >= TheScheduler.iNumCpus)
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				ecpu = 0;	// FIXME: Inactive CPU?
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   216
			}
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   217
		else
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			ecpu = iCpuAffinity;
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   219
		iEventState = (ecpu<<EEventCpuShift) | (ecpu<<EThreadCpuShift);
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   220
		if (aInfo.iGroup)
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   221
			{
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   222
			NKern::Lock();
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   223
			AcqSLock();
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			aInfo.iGroup->AcqSLock();
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			iParent = (NSchedulable*)aInfo.iGroup;
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			++aInfo.iGroup->iThreadCount;
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			iEventState |= EEventParent;
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			RelSLock();
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			NKern::Unlock();
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			}
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		}
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	__KTRACE_OPT(KNKERN,DEBUGPRINT("<NThreadBase::Create OK"));
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	return KErrNone;
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	}
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void NThread_Default_State_Handler(NThread* __DEBUG_ONLY(aThread), TInt __DEBUG_ONLY(aOperation), TInt __DEBUG_ONLY(aParameter))
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	{
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//	__KTRACE_OPT(KPANIC,DEBUGPRINT("Unknown NState %d: thread %T op %08x par %08x",aThread,aThread->iNState,aOperation,aParameter));
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#ifdef _DEBUG
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	DEBUGPRINT("UnknownState: thread %T op %08x par %08x",aThread,aOperation,aParameter);
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#endif
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	FAULT();
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	}
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void NThread_Default_Exception_Handler(TAny* aContext, NThread*)
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	{
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	ExcFault(aContext);
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	}
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/** Create a nanothread.
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	This function is intended to be used by the EPOC kernel and by personality
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	layers. A nanothread may not use most of the functions available to normal
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	Symbian OS threads. Use Kern::ThreadCreate() to create a Symbian OS thread.
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	@param aThread Pointer to control block for thread to create.
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	@param aInfo Information needed for creating the thread.
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	@see SNThreadCreateInfo
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	@see Kern::ThreadCreate
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	@pre	Call in a thread context.
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	@pre	Interrupts must be enabled.
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	@pre	Kernel must be unlocked.
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 */
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EXPORT_C TInt NKern::ThreadCreate(NThread* aThread, SNThreadCreateInfo& aInfo)
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	{
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	CHECK_PRECONDITIONS(MASK_KERNEL_UNLOCKED|MASK_INTERRUPTS_ENABLED|MASK_NOT_ISR|MASK_NOT_IDFC,"NKern::ThreadCreate");
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	return aThread->Create(aInfo,FALSE);
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	}
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// User-mode callbacks
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TUserModeCallback::TUserModeCallback(TUserModeCallbackFunc aFunc)
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	:	iNext(KUserModeCallbackUnqueued),
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		iFunc(aFunc)
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	{
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	}
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TUserModeCallback::~TUserModeCallback()
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	{
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	__NK_ASSERT_DEBUG(iNext == KUserModeCallbackUnqueued);
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	}
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void NKern::CancelUserModeCallbacks()
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	{
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	// Call any queued callbacks with the EUserModeCallbackCancel reason code, in the current
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	// thread.
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	TUserModeCallback* listHead =
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		(TUserModeCallback*)__e32_atomic_swp_ord_ptr(&NCurrentThread()->iUserModeCallbacks, NULL);
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	while (listHead)
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		{
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		TUserModeCallback* callback = listHead;
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		listHead = listHead->iNext;
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		callback->iNext = KUserModeCallbackUnqueued;
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		__e32_memory_barrier();
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		callback->iFunc(callback, EUserModeCallbackCancel);
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		}
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	}
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void NKern::MoveUserModeCallbacks(NThreadBase* aDestThread, NThreadBase* aSrcThread)
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	{
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	// Move all queued user-mode callbacks from the source thread to the destination thread, and
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	// prevent any more from being queued.  Used by the kernel thread code so that callbacks get
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	// cancelled in another thread if the thread they were originally queued on dies.
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	// Atomically remove list of callbacks and set pointer to 1
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	// The latter ensures any subsequent attempts to add callbacks fail
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	TUserModeCallback* sourceListStart =
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		(TUserModeCallback*)__e32_atomic_swp_ord_ptr(&aSrcThread->iUserModeCallbacks, (TAny*)1);
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	__NK_ASSERT_DEBUG(((TUint)sourceListStart & 3) == 0);  // check this only gets called once per thread
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	if (sourceListStart == NULL)
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		return;
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	TUserModeCallback* sourceListEnd = sourceListStart;
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	while (sourceListEnd->iNext != NULL)
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		sourceListEnd = sourceListEnd->iNext;
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	NKern::Lock();
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	TUserModeCallback* destListStart = aDestThread->iUserModeCallbacks;
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	do
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		{
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		__NK_ASSERT_DEBUG(((TUint)destListStart & 3) == 0);  // dest thread must not die
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		sourceListEnd->iNext = destListStart;
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		} while (!__e32_atomic_cas_ord_ptr(&aDestThread->iUserModeCallbacks, &destListStart, sourceListStart));
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	NKern::Unlock();
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	}
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/** Initialise the null thread
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	@internalComponent
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*/
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   335
void NKern::Init(NThread* aThread, SNThreadCreateInfo& aInfo)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   336
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   337
	aInfo.iFunction=NULL;			// irrelevant
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   338
	aInfo.iPriority=0;				// null thread has lowest priority
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   339
	aInfo.iTimeslice=0;				// null thread not timesliced
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   340
	aInfo.iAttributes=0;			// null thread does not require implicit locks
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   341
	aThread->Create(aInfo,TRUE);	// create the null thread
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   342
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   343
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   344
/** @internalTechnology */
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   345
EXPORT_C void NKern::RecordIntLatency(TInt /*aLatency*/, TInt /*aIntMask*/)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   346
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   347
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   348
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   349
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   350
/** @internalTechnology */
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   351
EXPORT_C void NKern::RecordThreadLatency(TInt /*aLatency*/)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   352
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   353
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   354
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   355
/********************************************
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   356
 * Deterministic Priority List Implementation
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   357
 ********************************************/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   358
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   359
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   360
/** Construct a priority list with the specified number of priorities
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   361
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   362
	@param aNumPriorities The number of priorities (must be 1-64).
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   363
 */
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   364
EXPORT_C TPriListBase::TPriListBase(TInt aNumPriorities)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   365
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   366
	memclr(this, sizeof(TPriListBase)+(aNumPriorities-1)*sizeof(SDblQueLink*) );
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   367
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   368
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   369
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   370
/********************************************
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   371
 * Miscellaneous
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   372
 ********************************************/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   373
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   374
/** Get the current value of the high performance counter.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   375
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   376
    If a high performance counter is not available, this uses the millisecond
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   377
    tick count instead.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   378
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   379
EXPORT_C TUint32 NKern::FastCounter()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   380
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   381
	return (TUint32)Timestamp();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   382
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   383
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   384
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   385
/** Get the frequency of counter queried by NKern::FastCounter().
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   386
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   387
EXPORT_C TInt NKern::FastCounterFrequency()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   388
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   389
	return (TInt)TimestampFrequency();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   390
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   391
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
extern "C" {
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
TUint32 CrashState;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
EXPORT_C TBool NKern::Crashed()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
	return CrashState!=0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   401
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   402
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   403
/**	Returns number of nanokernel timer ticks since system started.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   404
	@return tick count
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   405
	@pre any context
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   406
 */
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   407
EXPORT_C TUint32 NKern::TickCount()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   408
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   409
	return NTickCount();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   410
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   411
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   412
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   413
TUint32 BTrace::BigTraceId = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   414
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   415
TBool BTrace::DoOutBig(TUint32 a0, TUint32 a1, const TAny* aData, TInt aDataSize, TUint32 aContext, TUint32 aPc)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   416
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   417
	SBTraceData& traceData = BTraceData;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   418
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   419
	// see if trace is small enough to fit in single record...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   420
	if(TUint(aDataSize)<=TUint(KMaxBTraceDataArray+4))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   421
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   422
		a0 += aDataSize;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   423
		TUint32 a2 = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   424
		TUint32 a3 = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   425
		if(aDataSize)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   426
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   427
			a2 = *((TUint32*&)aData)++; // first 4 bytes into a2
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   428
			if(aDataSize>=4 && aDataSize<=8)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   429
				a3 = *(TUint32*)aData; // only 4 more bytes, so pass by value, not pointer
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   430
			else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   431
				a3 = (TUint32)aData;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   432
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   433
		__ACQUIRE_BTRACE_LOCK();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   434
		TBool r = traceData.iHandler(a0,0,aContext,a1,a2,a3,0,aPc);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   435
		__RELEASE_BTRACE_LOCK();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   436
		return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   437
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   438
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   439
	// adjust for header2, extra, and size word...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   440
	a0 |= BTrace::EHeader2Present<<(BTrace::EFlagsIndex*8)|BTrace::EExtraPresent<<(BTrace::EFlagsIndex*8);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   441
	a0 += 12;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   442
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   443
	TUint32 traceId = __e32_atomic_add_ord32(&BigTraceId, 1);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   444
	TUint32 header2 = BTrace::EMultipartFirst;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   445
	TInt offset = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   446
	do
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   447
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   448
		TUint32 size = aDataSize-offset;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   449
		if(size>KMaxBTraceDataArray)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   450
			size = KMaxBTraceDataArray;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   451
		else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   452
			header2 = BTrace::EMultipartLast;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   453
		if(size<=4)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   454
			*(TUint32*)&aData = *(TUint32*)aData; // 4 bytes or less are passed by value, not pointer
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   455
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   456
		__ACQUIRE_BTRACE_LOCK();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   457
		TBool result = traceData.iHandler(a0+size,header2,aContext,aDataSize,a1,(TUint32)aData,traceId,aPc);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   458
		__RELEASE_BTRACE_LOCK();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   459
		if (!result)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   460
			return result;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   461
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   462
		offset += size;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   463
		*(TUint8**)&aData += size;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   464
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   465
		header2 = BTrace::EMultipartMiddle;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   466
		a1 = offset;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   467
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   468
	while(offset<aDataSize);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   469
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   470
	return TRUE;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   471
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   472
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   473
EXPORT_C TSpinLock* BTrace::LockPtr()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   474
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   475
#ifdef __USE_BTRACE_LOCK__
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   476
	return &BTraceLock;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   477
#else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   478
	return 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   479
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   480
	}