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/*
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* Copyright (c) 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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#include <piprofiler/ProfilerVersion.h>
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#include <kern_priv.h>
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#include <plat_priv.h>
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#include "IttSamplerImpl.h"
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#ifdef ITT_EVENT_HANDLER
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_LIT8(KIttVersion, "2.00");
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#else
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_LIT8(KIttVersion, "1.22");
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#endif
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/*
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* ITT sampler definition
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*
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*/
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IttSamplerImpl::IttSamplerImpl():
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sampleDescriptor(&(this->sample[1]),0,KITTSampleBufferSize)
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{
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iCurrentLibCount = 0;
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iLibsCount = 0;
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iCodeSegsCount = 0;
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iTimeToSample = ETrue;
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iInitState = KIttHandlingLibs;
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this->Reset();
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}
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/*
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* destructor
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*/
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IttSamplerImpl::~IttSamplerImpl()
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{
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LOGSTRING("IttSamplerImpl::~IttSamplerImpl()");
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}
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/*
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* IttSamplerImpl::CreateFirstSample()
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*
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* Function for creating the first sample to the log file
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*/
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TInt IttSamplerImpl::CreateFirstSample()
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{
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this->iVersionData.Zero();
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this->iVersionData.Append(_L8("Bappea_ITT_V"));
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this->iVersionData.Append(KIttVersion);
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this->itt_sample = (TUint8*)iVersionData.Ptr();
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return iVersionData.Length();
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}
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/*
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* IttSamplerImpl::SampleNeeded(TUint32 sampleNum)
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*
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* @param TUint32 Sample number
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*
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*/
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TBool IttSamplerImpl::SampleNeeded(TUint32 sampleNum)
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{
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iCount = sampleNum;
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LOGSTRING2("IttSamplerImpl::SampleNeeded - time: %d", iCount);
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if ((iCount % iIttSamplingPeriod) == 0)
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{
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return true;
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}
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return false;
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}
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/*
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* IttSamplerImpl::SampleImpl(TUint32 pc, TUint32 sampleNum)
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*
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* @param TUint32 program counter
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* @param TUint32 sample number
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*/
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TInt IttSamplerImpl::SampleImpl(TUint32 pc,TUint32 sampleNum)
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{
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//LOGSTRING3("IttSamplerImpl::SampleImpl pc %d samplenum %d",pc, sampleNum);
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// in order to avoid overloading the interrupt
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// only one dynamic file in each 50ms is added to the stream
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// with the application of the tool in mind, this is
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// a reasonable measure
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TInt ret(0);
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// encode a process binary
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//sampleDescriptor.Zero();
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if(iTimeToSample)
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{
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// encode a library binary
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//sampleDescriptor.Zero();
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if(iInitState == KIttHandlingLibs)
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{
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if(iLibsCount < 20)
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{
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ret = HandleLibs(sampleNum);
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iLibsCount++;
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while(ret == KErrAlreadyExists)
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{
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ret = HandleLibs(sampleNum);
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iLibsCount++;
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}
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}
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else
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{
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iLibsCount = 0;
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return 0;
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}
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}
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//LOGSTRING2("IttSamplerImpl::SampleImpl HandledLibs %d", ret);
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// one library has been read to sample, needs to be written to file
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else if(iInitState == KIttHandlingCodeSegs)
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{
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if(iCodeSegsCount < 20)
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{
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ret = HandleSegs(sampleNum);
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iCodeSegsCount++;
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while(ret == KErrAlreadyExists)
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{
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ret = HandleSegs(sampleNum);
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iCodeSegsCount++;
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}
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}
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else
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{
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iCodeSegsCount = 0;
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return 0;
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}
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}
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//LOGSTRING2("IttSamplerImpl::SampleImpl HandledSegs %d", ret);
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else
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{
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// nothing to do
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Kern::Printf("IttSamplerImpl::SampleImpl - should not be here");
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return 0;
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}
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}
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else
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{
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LOGSTRING("IttSamplerImpl::SampleImpl Not time to sample");
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}
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return ret;
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}
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/*
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* IttSamplerImpl::Reset()
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*/
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void IttSamplerImpl::Reset()
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{
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iTimeToSample = ETrue;
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#ifdef ITT_EVENT_HANDLER
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iInitialLibsTaken= EFalse;
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iInitialSegsTaken= EFalse;
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#endif
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iCurrentLibCount = 0;
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iLibsCount = 0;
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iCodeSegsCount = 0;
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iLatestCodeseg = NULL;
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this->itt_sample = (TUint8*)&(this->sample[0]);
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sampleDescriptor.Zero();
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// #ifdef ITT_TEST
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SDblQue* codeSegList = Kern::CodeSegList();
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// the global list
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for (SDblQueLink* codeseg= codeSegList->First(); codeseg!=(SDblQueLink*) codeSegList; codeseg=codeseg->iNext)
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{
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DCodeSeg* seg = _LOFF(codeseg,DCodeSeg, iLink);
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//if(seg != 0)
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{
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if( (seg->iMark & 0x80) > 0)
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{
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seg->iMark = (seg->iMark & ~0x80);
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}
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}
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}
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// the garbage list
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NKern::ThreadEnterCS(); // Prevent us from dying or suspending whilst holding a DMutex
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DObjectCon* libs = Kern::Containers()[ELibrary];
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libs->Wait();
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TInt libCount = libs->Count();
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for(TInt i=0;i<libCount;i++)
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{
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DLibrary* lib = (DLibrary*)(*libs)[i];
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DCodeSeg* seg = lib->iCodeSeg;
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if( (seg->iMark & 0x80) > 0)
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{
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seg->iMark = (seg->iMark & ~0x80);
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}
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}
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libs->Signal();
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NKern::ThreadLeaveCS();
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//#endif //ITT_TEST
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}
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/*
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*
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*/
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TInt IttSamplerImpl::HandleLibs(TUint32 sampleNum)
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{
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NKern::ThreadEnterCS(); // Prevent us from dying or suspending whilst holding a DMutex
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DObjectCon* libs = Kern::Containers()[ELibrary];
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libs->Wait();
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TInt libCount(libs->Count());
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sampleDescriptor.Zero();
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// go 20 binaries through at a time
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//for(TInt i=0;i<libCount;i++)
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if (iCurrentLibCount < libCount)
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{
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// get libs from
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DLibrary* lib = (DLibrary*)(*libs)[iCurrentLibCount];
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libs->Signal();
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NKern::ThreadLeaveCS();
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iCurrentLibCount++;
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DCodeSeg* seg = lib->iCodeSeg;
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if(seg != 0)
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{
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if( (seg->iMark & 0x80) == 0)
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{
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this->sample[0] = seg->iFileName->Length();
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sampleDescriptor.Append(*(seg->iFileName));
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sampleDescriptor.Append((TUint8*)&(seg->iRunAddress),4);
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sampleDescriptor.Append((TUint8*)&(seg->iSize),4);
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#ifdef ITT_EVENT_HANDLER
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sampleDescriptor.Append((TUint8*)&(sampleNum),4);
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//Kern::Printf("DLL: NM %S : RA:0x%x SZ:0x%x, SN:0x%x",seg->iFileName,seg->iRunAddress,seg->iSize, sampleNum);
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//this->iFirstSampleTaken = ETrue;
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#else
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//Kern::Printf("DLL: NM %S : RA:0x%x SZ:0x%x",seg->iFileName,seg->iRunAddress,seg->iSize);
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#endif
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seg->iMark = (seg->iMark | 0x80);
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this->sample[0] = sampleDescriptor.Size();
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return sampleDescriptor.Size()+1;
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}
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else
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{
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//Kern::Printf("Already met DLL: NM %S : RA:0x%x SZ:0x%x, SN:0x%x",seg->iFileName,seg->iRunAddress,seg->iSize, sampleNum);
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return KErrAlreadyExists;
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}
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}
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}
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else
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{
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// check if list gone through
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iInitState = KIttHandlingCodeSegs;
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iInitialLibsTaken = ETrue;
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}
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libs->Signal();
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NKern::ThreadLeaveCS();
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return 0;
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}
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/*
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*
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*/
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TInt IttSamplerImpl::HandleSegs(TUint32 sampleNum)
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{
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SDblQue* codeSegList = Kern::CodeSegList();
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//Kern::Printf("PI");
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TUint count(0);
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sampleDescriptor.Zero();
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if(iLatestCodeseg == NULL)
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{
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iLatestCodeseg = codeSegList->First();
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}
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else
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{
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iLatestCodeseg = iLatestCodeseg->iNext;
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}
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// search the global code segment list
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//for (; iLatestCodeseg!=(SDblQueLink*) codeSegList; iLatestCodeseg=iLatestCodeseg->iNext)
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if (iLatestCodeseg != (SDblQueLink*) codeSegList)
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{
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DCodeSeg* seg = _LOFF(iLatestCodeseg, DCodeSeg, iLink);
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if(seg != 0)
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{
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if( (seg->iMark & 0x80) == 0)
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{
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this->sample[0] = seg->iFileName->Length();
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sampleDescriptor.Append(*(seg->iFileName));
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sampleDescriptor.Append((TUint8*)&(seg->iRunAddress),4);
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sampleDescriptor.Append((TUint8*)&(seg->iSize),4);
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#ifdef ITT_EVENT_HANDLER
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sampleDescriptor.Append((TUint8*)&(sampleNum),4);
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//Kern::Printf("EXE2: NM %S : RA:0x%x SZ:0x%x, time: %d",seg->iFileName,seg->iRunAddress,seg->iSize, sampleNum);
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#else
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//Kern::Printf("EXE2: NM %S : RA:0x%x SZ:0x%x, time: %d",seg->iFileName,seg->iRunAddress,seg->iSize, sampleNum);
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#endif
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seg->iMark = (seg->iMark | 0x80);
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count++;
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this->sample[0] = sampleDescriptor.Size();
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return sampleDescriptor.Size()+1;
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}
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else
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{
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//Kern::Printf("Already met EXE2: NM %S : RA:0x%x SZ:0x%x, time: %d",seg->iFileName,seg->iRunAddress,seg->iSize, sampleNum);
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return KErrAlreadyExists;
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}
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}
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}
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// check if list gone through
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else //if (count == 0)
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{
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iInitialSegsTaken = ETrue;
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iTimeToSample = false;
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LOGSTRING("ITT sampler - all initial samples generated!");
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}
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return 0;
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}
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// end of file
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