1 /*

     2 * Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 

    19 #include <random.h>

    20 #include <e32debug.h>

    21 #include "randomshim.h"

    22 

    23 _LIT(KThreadRandom, "threadrandom.cpp");

    24 

    25 EXPORT_C void SetThreadRandomL(CRandom* aRNG)

    26 	{

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

    28 	}

    29 

    30 EXPORT_C void SetThreadRandomLC(CRandom* aRNG)

    31 	{

    32 	CleanupStack::PushL(aRNG);

    33 	SetThreadRandomL(aRNG);

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

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

    36 	//cleanupstack such that OOM is not possible.

    37 	CleanupStack::Pop(aRNG);

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

    39 	}

    40 

    41 void DeleteThreadRandom(TAny* aPtr)

    42 	{

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

    44 	delete random;

    45 	TInt result = Dll::SetTls(0);

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

    47 	}

    48 

    49 EXPORT_C void DestroyThreadRandom(void)

    50 	{

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

    52 	TInt result = Dll::SetTls(0);

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

    54 	}

    55 

    56 EXPORT_C void GenerateRandomBytesL(TDes8& aDest)

    57 	{

    58 	TAny* tls = Dll::Tls();

    59 	if(tls)

    60 		{

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

    62 		}

    63 	else

    64 		{

    65 		TRandomShim::RandomL(aDest);

    66 		}

    67 	}