crypto/weakcrypto/source/random/threadrandom.cpp
changeset 0 2c201484c85f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcrypto/source/random/threadrandom.cpp	Wed Jul 08 11:25:26 2009 +0100
@@ -0,0 +1,65 @@
+/*
+* 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>
+
+_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
+		{
+		TRandom::RandomL(aDest);
+		}
+	}