--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysanadatacapture/piprofiler/piprofiler/plugins/GeneralsPlugin/inc/MemSamplerImpl.h	Thu Feb 11 15:52:57 2010 +0200
@@ -0,0 +1,240 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  
+*
+*/
+
+
+#ifndef PROFILER_MEM_SAMPLER_H
+#define PROFILER_MEM_SAMPLER_H
+
+#include "GeneralsConfig.h"
+
+#include <kern_priv.h>
+
+#include <piprofiler/ProfilerGenericClassesKrn.h>
+#include <piprofiler/ProfilerTraces.h>
+#include "GppSamplerImpl.h"
+
+// defines the maximum thread amount that is assumed to
+// be possible with MEM trace
+#define PROFILER_MAX_THREAD_AMOUNT	512
+
+/*
+ *	
+ *	MEM sampler definition
+ *	
+ */
+
+class MemSamplerImpl
+{
+public:
+	enum EProcessingState
+	{
+		EStartingToProcess,
+		EProcessingNames,
+		EProcessingData,
+		ENothingToProcess
+	};
+
+	MemSamplerImpl();
+	~MemSamplerImpl();
+
+	TInt	CreateFirstSample();
+	TInt	SampleImpl();
+	TBool	SampleNeeded();
+	void	Reset();
+	TInt	ProcessChunks();
+	TInt    ProcessThreads();
+    TInt    GatherChunks();
+    TInt    GatherThreads();
+	
+	TInt	EncodeChunkData(DChunk& chunk);
+	TInt	EncodeChunkName(DChunk& chunk);
+	TInt	EncodeChunkData(DThread& thread);
+	TInt	EncodeChunkName(DThread& thread);	
+
+	TInt 	EncodeTotalMemoryName();
+	TInt 	EncodeTotalMemory();
+	
+	TInt	EncodeNameCode();
+	TInt	EncodeDataCode();
+
+	DChunk*		heapChunksToSample[PROFILER_MAX_THREAD_AMOUNT];
+	DChunk*		heapChunkNamesToReport[PROFILER_MAX_THREAD_AMOUNT];
+	TInt		iCount;
+	TInt		iChunkCount;
+	TInt		iNewChunkCount;
+	TBuf8<0x50> name;
+	DThread*	threadsToSample[PROFILER_MAX_THREAD_AMOUNT];
+	DThread*	threadNamesToReport[PROFILER_MAX_THREAD_AMOUNT];
+	TInt		iThreadCount;
+	TInt		iNewThreadCount;
+
+	TInt		iChunksProcessing;
+    TInt        iThreadsProcessing;
+	TInt		iMemSamplingPeriod;
+	TInt		iMemSamplingPeriodDiv2;
+	TBool		iSampleThreads;
+	TBool       iTimeToSample;
+	
+	TBool 		iTotalMemoryOk;
+	TBool		iTotalMemoryNameOk;
+
+	TUint8		sample[257];
+	TPtr8		sampleDescriptor;
+};
+
+template <int BufferSize>
+class DProfilerMemSampler : public DProfilerGenericSampler<BufferSize>
+{
+public:
+	DProfilerMemSampler(struct TProfilerGppSamplerData*, TInt id);
+	~DProfilerMemSampler();
+
+	void	Sample();
+	TInt	Reset(DProfilerSampleStream* aStream, TUint32 aSyncOffset);
+	TInt	PostSample();
+	TBool	PostSampleNeeded();
+	
+private:
+	MemSamplerImpl			           memSamplerImpl;
+	struct TProfilerGppSamplerData*    gppSamplerData;
+	TBool                              sampleNeeded;
+};
+
+/*
+ *	
+ *	MEM sampler implementation
+ *	
+ */
+
+template <int BufferSize>
+DProfilerMemSampler<BufferSize>::DProfilerMemSampler(struct TProfilerGppSamplerData* gppSamplerDataIn, TInt id) :
+	DProfilerGenericSampler<BufferSize>(PROFILER_MEM_SAMPLER_ID)
+    {
+	LOGSTRING2("CProfilerMemSampler<%d>::CProfilerMemSampler",BufferSize);
+	this->gppSamplerData = gppSamplerDataIn;
+	this->iSamplingPeriod = 3000;	// set default setting
+    }
+
+template <int BufferSize>
+TInt DProfilerMemSampler<BufferSize>::Reset(DProfilerSampleStream* aStream, TUint32 aSyncOffset)
+    {
+	LOGSTRING2("CProfilerMemSampler<%d>::Reset - calling superclass reset",BufferSize);
+	DProfilerGenericSampler<BufferSize>::Reset(aStream);
+	LOGSTRING2("CProfilerMemSampler<%d>::Reset - called superclass reset",BufferSize);
+	memSamplerImpl.Reset();
+
+	this->memSamplerImpl.iMemSamplingPeriod = this->iSamplingPeriod;
+	this->memSamplerImpl.iMemSamplingPeriodDiv2 = (TInt)(this->memSamplerImpl.iMemSamplingPeriod / 2);
+	
+	LOGSTRING3("CProfilerMemSampler<%d>::Reset - set mem sampling period to",
+							BufferSize,this->memSamplerImpl.iMemSamplingPeriod);
+
+	TInt length = memSamplerImpl.CreateFirstSample();
+	this->iSampleBuffer->AddSample(memSamplerImpl.sample,length);
+	
+	this->sampleNeeded = false;
+
+	return KErrNone;
+    }
+
+template <int BufferSize> 
+TInt DProfilerMemSampler<BufferSize>::PostSample()
+    {
+    this->sampleNeeded = false;
+
+    LOGSTRING3("CProfilerMemSampler<%d>::PostSample - state %d",BufferSize,this->sampleBuffer->GetBufferStatus());
+    
+    TInt interruptLevel = NKern::DisableInterrupts(0);
+    
+    // first collect chunk data
+    TInt length = this->memSamplerImpl.SampleImpl();
+    if(length != 0)
+        {
+        LOGSTRING("MEM sampler PostSample - starting to sample");
+
+        // then, encode the sample to the buffer
+        while(length > 0)
+            {
+            this->iSampleBuffer->AddSample(memSamplerImpl.sample,length);
+            length = this->memSamplerImpl.SampleImpl();
+            // indicate that the whole MEM sample ends by having a 0x00 in the end
+            if(length == 0)
+                {
+                TUint8 number = 0;
+                LOGSTRING("MEM sampler PostSample - all samples generated!");
+                
+                this->iSampleBuffer->AddSample(&number,1);
+                LOGSTRING("MEM sampler PostSample - end mark added");
+                }
+            }
+        }
+    
+    LOGSTRING("MEM sampler PostSample - finished sampling");
+    
+    NKern::RestoreInterrupts(interruptLevel);
+   
+    // finally perform superclass postsample
+	TInt i = this->DProfilerGenericSampler<BufferSize>::PostSample();
+	return i;
+
+    }
+
+template <int BufferSize> 
+TBool DProfilerMemSampler<BufferSize>::PostSampleNeeded()
+    {
+	LOGSTRING3("CProfilerMemSampler<%d>::PostSampleNeeded - state %d",BufferSize,this->sampleBuffer->GetBufferStatus());
+
+	TUint32 status = this->iSampleBuffer->iBufferStatus;
+
+	if(status == DProfilerSampleBuffer::BufferCopyAsap || status == DProfilerSampleBuffer::BufferFull || this->sampleNeeded == true)
+	    {
+		return true;
+	    }
+	
+	return false;
+    }
+
+template <int BufferSize>
+void DProfilerMemSampler<BufferSize>::Sample()
+    {
+
+	LOGSTRING2("CProfilerMemSampler<%d>::Sample",BufferSize);	
+	
+	if(memSamplerImpl.SampleNeeded()) 
+	    {
+		this->sampleNeeded = true;
+
+		LOGSTRING2("CProfilerMemSampler<%d>::Sample - sample needed",BufferSize);	
+		
+		// start the MEM sample with the sample time
+		TUint8 number = 4;    // mem sampler id
+		this->iSampleBuffer->AddSample(&number,1);
+		this->iSampleBuffer->AddSample((TUint8*)&(gppSamplerData->sampleNumber),4);
+
+		// leave the rest of the processing for PostSample()
+	    }	
+
+	LOGSTRING2("CProfilerMemSampler<%d>::Sample",BufferSize);
+	return;
+    }
+
+template <int BufferSize>
+DProfilerMemSampler<BufferSize>::~DProfilerMemSampler()
+    {
+	LOGSTRING2("CProfilerMemSampler<%d>::~CProfilerMemSampler",BufferSize);		
+    }
+#endif