/*

* Copyright (c) 2003-2009 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 <random.h>

#include <e32debug.h>

#include "randomshim.h"

_LIT(KThreadRandom, "threadrandom.cpp");

EXPORT_C void SetThreadRandomL(CRandom* aRNG)

	{

	User::LeaveIfError(Dll::SetTls(aRNG));	

	}

EXPORT_C void SetThreadRandomLC(CRandom* aRNG)

	{

	CleanupStack::PushL(aRNG);

	SetThreadRandomL(aRNG);

	//This pop before the push isn't a problem as the PushL can't fail. 

	//We just did a push before this and thus there is enough room on the

	//cleanupstack such that OOM is not possible.

	CleanupStack::Pop(aRNG);

	CleanupStack::PushL(TCleanupItem(&DeleteThreadRandom, Dll::Tls()));

	}

void DeleteThreadRandom(TAny* aPtr)

	{

	CRandom* random = reinterpret_cast<CRandom*>(aPtr);

	delete random;

	TInt result = Dll::SetTls(0);

	__ASSERT_ALWAYS(result == 0, User::Panic(KThreadRandom, 1));

	}

EXPORT_C void DestroyThreadRandom(void)

	{

	delete (CRandom*)(Dll::Tls());

	TInt result = Dll::SetTls(0);

	__ASSERT_ALWAYS(result == 0, User::Panic(KThreadRandom, 1));

	}

EXPORT_C void GenerateRandomBytesL(TDes8& aDest)

	{

	TAny* tls = Dll::Tls();

	if(tls)

		{

		((CRandom*)tls)->GenerateBytesL(aDest);

		}

	else

		{

		TRandomShim::RandomL(aDest);

		}

	}