// Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "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:

//

#include <e32test.h>

#include <e32msgqueue.h>

#include "bm_suite.h"

class Sync : public BMProgram

	{

public :

	Sync() : BMProgram(_L("Synchronization Primitives"))

		{}

	virtual TBMResult* Run(TBMUInt64 aIter, TInt* aCount);

	typedef void (*MeasurementFunc)(TBMResult*, TBMUInt64 aIter, TBool aRemote);

	struct Measurement 

		{

		MeasurementFunc iFunc;

		TPtrC			iName;

		TBool			iRemote;

		Measurement(MeasurementFunc aFunc, const TDesC& aName, TBool aRemote = EFalse) : 

					iFunc(aFunc), iName(aName), iRemote(aRemote) {}

		};

	static TBMResult iResults[];

	static Measurement iMeasurements[];

	static void MutexPassing(TBMResult*, TBMUInt64 aIter, TBool aRemote);

	static void MutexContentionParent(TBMResult* aResult, TBMUInt64 aIter, TBool aRemote);

	static TInt MutexContentionChild(TAny*);

	static void SemaphoreLatencyParent(TBMResult* aResult, TBMUInt64 aIter, TBool aRemote);

	static TInt SemaphoreLatencyChild(TAny*);

	static void ThreadSemaphoreLatencyParent(TBMResult* aResult, TBMUInt64 aIter, TBool aRemote);

	static TInt ThreadSemaphoreLatencyChild(TAny*);

	};

Sync::Measurement Sync::iMeasurements[] =

	{

	Measurement(&Sync::MutexPassing, _L("Mutex Passing Case")),

	Measurement(&Sync::MutexContentionParent, _L("Local Mutex Contention")),

	Measurement(&Sync::MutexContentionParent, _L("Remote Mutex Contention"), ETrue),

	Measurement(&Sync::SemaphoreLatencyParent, _L("Local Semaphore Latency")),

	Measurement(&Sync::SemaphoreLatencyParent, _L("Remote Semaphore Latency"), ETrue),

	Measurement(&Sync::ThreadSemaphoreLatencyParent, _L("Local Thread Semaphore Latency")),

	};

TBMResult Sync::iResults[sizeof(Sync::iMeasurements)/sizeof(Sync::iMeasurements[0])];

static Sync sync;

void Sync::MutexPassing(TBMResult* aResult, TBMUInt64 aIter, TBool)

	{

	RMutex mutex;

	mutex.CreateLocal();

	TBMTimeInterval ti;

	ti.Begin();

	for (TBMUInt64 i = 0; i < aIter; ++i)

		{

		mutex.Wait();

		mutex.Signal();

		}

	TBMTicks t = ti.End();

	mutex.Close();

	aResult->Cumulate(t, aIter);

	}

class MutexContentionArgs : public TBMSpawnArgs

	{

public:

	RMutex		iMutexA;

	RMutex		iMutexB;

	RSemaphore	iSem;

	TBMUInt64	iIterationCount;

	MutexContentionArgs(TInt aRemote, TBMUInt64 aIter);

	void ChildOpen();

	void ChildClose();

	void Close();

	};

MutexContentionArgs::MutexContentionArgs(TInt aRemote, TBMUInt64 aIter) :

		TBMSpawnArgs(Sync::MutexContentionChild, KBMPriorityLow, aRemote, sizeof(*this)),

		iIterationCount(aIter)

	{

	TInt r;

	if (aRemote)

		{

		r = iMutexA.CreateGlobal(_L("MutexA"));

		BM_ERROR(r, r == KErrNone);

		r = iMutexB.CreateGlobal(_L("MutexB"));

		BM_ERROR(r, r == KErrNone);

		r = iSem.CreateGlobal(_L("Semaphore"), 0);

		BM_ERROR(r, r == KErrNone);

		}

	else

		{

		r = iMutexA.CreateLocal();

		BM_ERROR(r, r == KErrNone);

		r = iMutexB.CreateLocal();

		BM_ERROR(r, r == KErrNone);

		r = iSem.CreateLocal(0);

		BM_ERROR(r, r == KErrNone);

		}

	}

void MutexContentionArgs::ChildOpen()

	{

	if (iRemote)

		{

		iMutexA.Duplicate(iParent);

		iMutexB.Duplicate(iParent);

		iSem.Duplicate(iParent);

		}

	}

void MutexContentionArgs::ChildClose()

	{

	if (iRemote)

		{

		iMutexA.Close();

		iMutexB.Close();

		iSem.Close();

		}

	}

void MutexContentionArgs::Close()

	{

	iMutexA.Close();

	iMutexB.Close();

	iSem.Close();

	}

void Sync::MutexContentionParent(TBMResult* aResult, TBMUInt64 aIter, TBool aRemote)

	{

	MutexContentionArgs mc(aRemote, aIter);

	MBMChild* child = sync.SpawnChild(&mc);

	mc.iSem.Wait();

	TBMTimeInterval ti;

	ti.Begin();

	for (TBMUInt64 i = 0; i < aIter; ++i)

		{

		mc.iMutexA.Wait();

		mc.iMutexA.Signal();

		mc.iMutexB.Wait();

		mc.iMutexB.Signal();

		}	

	TBMTicks t = ti.End();

	child->WaitChildExit();

	mc.Close();

	aResult->Cumulate(t/2, aIter);

	}

TInt Sync::MutexContentionChild(TAny* ptr)

	{

	MutexContentionArgs* mc = (MutexContentionArgs*) ptr;

	mc->ChildOpen();

	mc->iMutexA.Wait();

	mc->iSem.Signal();

	for (TBMUInt64 i = 0; i < mc->iIterationCount; ++i)

		{

		mc->iMutexB.Wait();

		mc->iMutexA.Signal();

		mc->iMutexA.Wait();

		mc->iMutexB.Signal();

		}

	mc->iMutexA.Signal();

	mc->ChildClose();

	return KErrNone;

	}

class SemaphoreLatencyArgs : public TBMSpawnArgs

	{

public:

	RSemaphore			iSem;

	TBMUInt64			iIterationCount;

	RMsgQueue<TBMTicks>	iSignalTimeQue;

	SemaphoreLatencyArgs(TInt aRemote, TBMUInt64 aIter);

	void ChildOpen();

	void ChildClose();

	TBMTicks SignalTime();

	void ChildSignalTime(TBMTicks);

	void Close();

	};

SemaphoreLatencyArgs::SemaphoreLatencyArgs(TInt aRemote, TBMUInt64 aIter) : 

	TBMSpawnArgs(Sync::SemaphoreLatencyChild, KBMPriorityLow, aRemote, sizeof(*this)),

	iIterationCount(aIter)

	{

	TInt r;

	if (aRemote)

		{

		r = iSem.CreateGlobal(_L("BM Semaphore"), 0);

		BM_ERROR(r, r == KErrNone);

		}

	else

		{

		r = iSem.CreateLocal(0);

		BM_ERROR(r, r == KErrNone);

		}

	r = iSignalTimeQue.CreateGlobal(_L("BM Queue"), 1);

	BM_ERROR(r, r == KErrNone);

	}	

void SemaphoreLatencyArgs::ChildOpen()

	{

	if (iRemote)

		{

		iSem.Duplicate(iParent);

		TInt r = iSignalTimeQue.OpenGlobal(_L("BM Queue"));

		BM_ERROR(r, r == KErrNone);

		}

	}

void SemaphoreLatencyArgs::ChildSignalTime(TBMTicks aTime)

	{

	TInt r = iSignalTimeQue.Send(aTime);

	BM_ERROR(r, r == KErrNone);

	}

TBMTicks SemaphoreLatencyArgs::SignalTime()

	{

	TBMTicks time;

	iSignalTimeQue.ReceiveBlocking(time);

	return time;

	}

void SemaphoreLatencyArgs::ChildClose()

	{

	if (iRemote)

		{

		iSem.Close();

		iSignalTimeQue.Close();

		}

	}

void SemaphoreLatencyArgs::Close()

	{

	iSem.Close();

	iSignalTimeQue.Close();

	}

void Sync::SemaphoreLatencyParent(TBMResult* aResult, TBMUInt64 aIter, TBool aRemote)

	{

	SemaphoreLatencyArgs sl(aRemote, aIter);

	MBMChild* child = sync.SpawnChild(&sl);

	for (TBMUInt64 i = 0; i < aIter; ++i)

		{

		sl.iSem.Wait();

		TBMTicks now;

		::bmTimer.Stamp(&now);

		aResult->Cumulate(TBMTicksDelta(sl.SignalTime(), now));

		}

	child->WaitChildExit();

	sl.Close();

	}

TInt Sync::SemaphoreLatencyChild(TAny* ptr)

	{

	SemaphoreLatencyArgs* sl = (SemaphoreLatencyArgs*) ptr;

	sl->ChildOpen();

	for (TBMUInt64 i = 0; i < sl->iIterationCount; ++i)

		{

		TBMTicks sigTime;

		::bmTimer.Stamp(&sigTime);		

		sl->iSem.Signal();

		sl->ChildSignalTime(sigTime);

		}

	sl->ChildClose();

	return KErrNone;

	}

class ThreadSemaphoreLatencyArgs : public TBMSpawnArgs

	{

public:

	TBMUInt64			iIterationCount;

	TBMTicks			iSignalTime;

	TRequestStatus		iStatus;

	TRequestStatus*		iStatusPtr;

	RMsgQueue<TBMTicks>	iSignalTimeQue;

	ThreadSemaphoreLatencyArgs(TInt aRemote, TBMUInt64 aIter);

	void ChildOpen();

	void ChildClose();

	TBMTicks SignalTime();

	void ChildSignalTime(TBMTicks);

	void Close();

	};

ThreadSemaphoreLatencyArgs::ThreadSemaphoreLatencyArgs(TInt aRemote, TBMUInt64 aIter) : 

	TBMSpawnArgs(Sync::ThreadSemaphoreLatencyChild, KBMPriorityLow, aRemote, sizeof(*this)),

	iIterationCount(aIter),

	iStatusPtr(&iStatus)

	{

	TInt r = iSignalTimeQue.CreateGlobal(_L("BM Queue"), 1);

	BM_ERROR(r, r == KErrNone);

	}

void ThreadSemaphoreLatencyArgs::ChildOpen()

	{

	if (iRemote)

		{

		TInt r = iSignalTimeQue.OpenGlobal(_L("BM Queue"));

		BM_ERROR(r, r == KErrNone);

		}

	}

void ThreadSemaphoreLatencyArgs::ChildSignalTime(TBMTicks aTime)

	{

	TInt r = iSignalTimeQue.Send(aTime);

	BM_ERROR(r, r == KErrNone);

	}

TBMTicks ThreadSemaphoreLatencyArgs::SignalTime()

	{

	TBMTicks time;

	iSignalTimeQue.ReceiveBlocking(time);

	return time;

	}

void ThreadSemaphoreLatencyArgs::ChildClose()

	{

	if (iRemote)

		{

		iSignalTimeQue.Close();

		}

	}

void ThreadSemaphoreLatencyArgs::Close()

	{

	iSignalTimeQue.Close();

	}

void Sync::ThreadSemaphoreLatencyParent(TBMResult* aResult, TBMUInt64 aIter, TBool aRemote)

	{

	ThreadSemaphoreLatencyArgs sl(aRemote, aIter);

	MBMChild* child = sync.SpawnChild(&sl);

	for (TBMUInt64 i = 0; i < aIter; ++i)

		{

		sl.iStatus = KRequestPending;

		User::WaitForRequest(sl.iStatus);

		BM_ASSERT(sl.iStatus == KErrNone);

		TBMTicks now;

		::bmTimer.Stamp(&now);

		aResult->Cumulate(TBMTicksDelta(sl.SignalTime(), now));

		}

	child->WaitChildExit();

	sl.Close();

	}

TInt Sync::ThreadSemaphoreLatencyChild(TAny* ptr)

	{

	ThreadSemaphoreLatencyArgs* sl = (ThreadSemaphoreLatencyArgs*) ptr;

	sl->ChildOpen();

	for (TBMUInt64 i = 0; i < sl->iIterationCount; ++i)

		{

		TRequestStatus* sptr = sl->iStatusPtr;

		TBMTicks sigTime;

		::bmTimer.Stamp(&sigTime);		

		sl->iParent.RequestComplete(sptr, KErrNone);

		sl->ChildSignalTime(sigTime);

		}

	sl->ChildClose();

	return KErrNone;

	}

TBMResult* Sync::Run(TBMUInt64 aIter, TInt* aCount)

	{

	TInt count = sizeof(iResults)/sizeof(iResults[0]);

	for (TInt i = 0; i < count; ++i)

		{

		iResults[i].Reset(iMeasurements[i].iName);

		iMeasurements[i].iFunc(&iResults[i], aIter, iMeasurements[i].iRemote);

		iResults[i].Update();

		}

	*aCount = count;

	return iResults;

	}

void AddSync()

	{

	BMProgram* next = bmSuite;

	bmSuite=(BMProgram*)&sync;

	bmSuite->Next()=next;

	}