sl@0: /*
sl@0: * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description:
sl@0: *
sl@0: */
sl@0: // D_FTRACE.CPP
sl@0: //
sl@0: //
sl@0: //
sl@0: #include "plat_priv.h"
sl@0: #include <kernel/kernel.h>
sl@0: 
sl@0: #include "f32trace.h"
sl@0: 
sl@0: DMutex* TheTraceMutex = NULL;
sl@0: _LIT(KLitTraceMutexName, "FTRACE_MUTEX");
sl@0: 
sl@0: const TInt KMajorVersionNumber=1;
sl@0: const TInt KMinorVersionNumber=0;
sl@0: const TInt KBuildVersionNumber=0;
sl@0: 
sl@0: 
sl@0: class DLddFactoryFTrace : public DLogicalDevice
sl@0: 	{
sl@0: public:
sl@0: 	DLddFactoryFTrace();
sl@0: 	virtual ~DLddFactoryFTrace();
sl@0: 	virtual TInt Install();
sl@0: 	virtual void GetCaps(TDes8 &aDes) const;
sl@0: 	virtual TInt Create(DLogicalChannelBase*& aChannel); 	//overriding pure virtual
sl@0: 	};
sl@0: 
sl@0: class DLddFTrace : public DLogicalChannelBase
sl@0: 	{
sl@0: public:
sl@0: 	DLddFTrace();
sl@0: 	~DLddFTrace();
sl@0: protected:
sl@0: 	virtual TInt DoCreate(TInt aUnit, const TDesC8* anInfo, const TVersion& aVer);
sl@0: 
sl@0: 	virtual TInt Request(TInt aReqNo, TAny* a1, TAny* a2);
sl@0: 
sl@0: private:
sl@0: 	void DoCancel(TInt aReqNo);
sl@0: 	TInt DoRequest(TInt aReqNo, TRequestStatus* aStatus, TAny* a1, TAny* a2);
sl@0: 	TInt DoControl(TInt aFunction, TAny* a1, TAny* a2);
sl@0: 
sl@0: private:
sl@0:     };
sl@0: 
sl@0: DECLARE_STANDARD_LDD()
sl@0: 	{
sl@0: 	TInt r = Kern::MutexCreate(TheTraceMutex,  KLitTraceMutexName, KMutexOrdNone);
sl@0: 	if (r != KErrNone)
sl@0: 		return NULL;
sl@0: 
sl@0: 	return new DLddFactoryFTrace;
sl@0: 	}
sl@0: 
sl@0: DLddFactoryFTrace::DLddFactoryFTrace()
sl@0: 	{
sl@0: 
sl@0:     iParseMask=KDeviceAllowUnit;  // Pass stack number as unit
sl@0: 	iUnitsMask=0xffffffff;
sl@0: 	iVersion=TVersion(KMajorVersionNumber,KMinorVersionNumber,KBuildVersionNumber);
sl@0: 	}
sl@0: 
sl@0: TInt DLddFactoryFTrace::Create(DLogicalChannelBase*& aChannel)
sl@0: 	{
sl@0: 	aChannel=new DLddFTrace;
sl@0: 	return aChannel ? KErrNone : KErrNoMemory;
sl@0: 	}
sl@0: 
sl@0: TInt DLddFactoryFTrace::Install()
sl@0: 	{
sl@0:     TPtrC name=_L("FTrace");
sl@0: 	return(SetName(&name));
sl@0: 	}
sl@0: 
sl@0: void DLddFactoryFTrace::GetCaps(TDes8& /*aDes*/) const
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: DLddFactoryFTrace::~DLddFactoryFTrace()
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: DLddFTrace::DLddFTrace()
sl@0: 	{
sl@0:     }
sl@0: 
sl@0: DLddFTrace::~DLddFTrace()
sl@0: 	{
sl@0:     }
sl@0: 
sl@0: TInt DLddFTrace::DoCreate(TInt /*aUnit*/, const TDesC8* /*aInfo*/, const TVersion& aVer)
sl@0: 	{
sl@0: 
sl@0: 	if (!Kern::QueryVersionSupported(TVersion(KMajorVersionNumber,KMinorVersionNumber,KBuildVersionNumber),aVer))
sl@0: 		return(KErrNotSupported);
sl@0: 
sl@0:     return(KErrNone);
sl@0: 	}
sl@0: 
sl@0: void DLddFTrace::DoCancel(TInt /*aReqNo*/)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: TInt DLddFTrace::Request(TInt aReqNo, TAny* a1, TAny* a2)
sl@0: 	{
sl@0: 	NKern::ThreadEnterCS();
sl@0: 	Kern::MutexWait(*TheTraceMutex);
sl@0: 	TInt r = DoControl(aReqNo, a1, a2);
sl@0: 	Kern::MutexSignal(*TheTraceMutex);
sl@0: 	NKern::ThreadLeaveCS();
sl@0: 
sl@0: 	return r;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: const TUint KTraceBufferSize = 4096;
sl@0: TUint8 gTraceBuffer[KTraceBufferSize];
sl@0: 
sl@0: 
sl@0: #define MIN(a,b)			((a) < (b) ? (a) : (b))
sl@0: 
sl@0: TInt DLddFTrace::DoControl(TInt aFunction, TAny* a1, TAny* a2)
sl@0: //
sl@0: // Mostly requests (but some kernel server async ones)
sl@0: //
sl@0: 	{
sl@0: 	TInt r=KErrNotSupported;
sl@0: 	switch (aFunction)
sl@0: 		{
sl@0:         case RFTrace::ETraceMultiple:
sl@0:             {
sl@0: 			typedef struct {
sl@0: 				TClassification iCategory;
sl@0: 				TUint8 iPadding1[sizeof(TUint) - sizeof(TClassification)];
sl@0: 
sl@0: 				TFormatId iFormatId;
sl@0: 				TUint8 iPadding2[sizeof(TUint) - sizeof(TFormatId)];
sl@0: 
sl@0: 				TUint32 iUid;
sl@0: 				TInt iDescriptorCount;
sl@0: 				} TraceArgs;
sl@0: 
sl@0: 			TraceArgs args={0};
sl@0: 
sl@0: 			XTRAP(r, XT_DEFAULT, kumemget32(&args, a1, sizeof(args)));
sl@0: 			if (r != KErrNone)
sl@0: 				return r;
sl@0: 
sl@0: 			// current descriptor - MUST be either a TPtr8 or a TBuf8<4>
sl@0: 			TUint32 desc[2] = {0, 0};
sl@0: 			TUint32& desLength = desc[0];
sl@0: 
sl@0: 			TUint offset = 0;
sl@0: 
sl@0: 			*((TUint*) (gTraceBuffer+offset)) = args.iFormatId;
sl@0: 			offset+= sizeof(TUint);
sl@0: 
sl@0: 			TDesC8* des = (TDesC8*) ((TUint8*) a2);
sl@0: 			const TInt desSize = sizeof(TPtrC8);
sl@0: 			for (TInt n=0; n< args.iDescriptorCount; n++, des = (TDesC8*) (((TUint8*) des) + desSize) )
sl@0: 				{
sl@0: 
sl@0: 				XTRAP(r, XT_DEFAULT, kumemget32(desc, des, sizeof(desc)));
sl@0: 				TUint32 desType = desLength >> KShiftDesType;
sl@0: 				desLength &= (TUint) (KMaskDesLength);
sl@0: 				if (desType == EPtrC)
sl@0: 					{
sl@0: 					*((TUint*) (gTraceBuffer+offset)) = desLength;
sl@0: 					desLength = (desLength+3)&~3;
sl@0: 					offset+= sizeof(TUint);
sl@0: 					}
sl@0: 				else if (desType == EBufC)
sl@0: 					{
sl@0: 					*((TUint*) (gTraceBuffer+offset)) = desc[1];
sl@0: 					offset+= sizeof(TUint);
sl@0: 					if (desLength > 4)
sl@0: 						return KErrArgument;
sl@0: 					desLength = 0;
sl@0: 					continue;
sl@0: 					}
sl@0: 				else
sl@0: 					return KErrArgument;
sl@0: 
sl@0: 				TUint len = MIN(KTraceBufferSize - offset, desLength);
sl@0: 				XTRAP(r, XT_DEFAULT, kumemget(gTraceBuffer+offset, (const TUint8*) desc[1], len));
sl@0: 				offset+= len;
sl@0: 
sl@0: 				}
sl@0: 
sl@0: 			BTrace::OutFilteredBig
sl@0: 				(BTRACE_HEADER_C(8,args.iCategory, 0), args.iUid, gTraceBuffer, offset);
sl@0: 
sl@0: 			r=KErrNone;
sl@0: 			break;
sl@0:             }
sl@0: 		}
sl@0: 	return(r);
sl@0: 	}
sl@0: