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 

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

    22 

    23 EXPORT_C void SetThreadRandomL(CRandom* aRNG)

    24 	{

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

    26 	}

    27 

    28 EXPORT_C void SetThreadRandomLC(CRandom* aRNG)

    29 	{

    30 	CleanupStack::PushL(aRNG);

    31 	SetThreadRandomL(aRNG);

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

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

    34 	//cleanupstack such that OOM is not possible.

    35 	CleanupStack::Pop(aRNG);

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

    37 	}

    38 

    39 void DeleteThreadRandom(TAny* aPtr)

    40 	{

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

    42 	delete random;

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

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

    45 	}

    46 

    47 EXPORT_C void DestroyThreadRandom(void)

    48 	{

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

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

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

    52 	}

    53 

    54 EXPORT_C void GenerateRandomBytesL(TDes8& aDest)

    55 	{

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

    57 	if(tls)

    58 		{

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

    60 		}

    61 	else

    62 		{

    63 		TRandom::RandomL(aDest);

    64 		}

    65 	}