cryptomgmtlibs/securitycommonutils/inc/ipcstream.inl
changeset 8 35751d3474b7
child 61 641f389e9157
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptomgmtlibs/securitycommonutils/inc/ipcstream.inl	Thu Sep 10 14:01:51 2009 +0300
@@ -0,0 +1,132 @@
+/*
+* Copyright (c) 2008-2009 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: 
+* Library to add s32strm support for IPC (ie. stream via multiple IPC read/writes instead of
+* copying to a buffer and streaming to/from there.
+*
+*/
+
+
+/**
+ @file
+ @internalTechnology
+ @prototype
+*/
+
+#ifndef IPCSTREAM_INL
+#define IPCSTREAM_INL
+
+#include <scs/ipcstream.h>
+#include <scs/streamingarray.h>
+
+
+inline void WriteIntValueL(const RMessage2& aMessage, TInt aParam, TInt aValue)
+	{
+	TPckg<TInt> valuePak(aValue);
+	aMessage.WriteL(aParam, valuePak);
+	}
+
+template <class T>
+void WriteArraySizeL(const RMessage2& aMessage, TInt aParam, RPointerArray<T>& aArray)
+	{
+	TInt arraySize(0);
+	// If the array is not empty, calculate and return the required buffer size to externalize it. 
+	// Otherwise, return zero.
+	if(aArray.Count())
+		{
+		arraySize = ExternalizedBufferSizeL(aArray);
+		}
+	WriteIntValueL(aMessage, aParam, arraySize);
+	}
+
+template <class T>
+void WriteArraySizeL(const RMessage2& aMessage, TInt aParam, RArray<T>& aArray)
+	{
+	TInt arraySize(0); // if the array is empty, then zero length is returned
+	if(aArray.Count())
+		{ 
+		arraySize = ExternalizedBufferSizeL(aArray);
+		}
+	WriteIntValueL(aMessage, aParam, arraySize);
+	}
+
+template <class T>
+void WriteObjectSizeL(const RMessage2& aMessage, TInt aParam, const T* aObject)
+	{
+	// Calculate that how much buffer is needed to externalize the object
+	TInt entrySize(0);
+	if(aObject)
+		{
+		entrySize = GetObjectBufferSizeL(*aObject);
+		}
+	WriteIntValueL(aMessage, aParam, entrySize);
+	}
+
+template <class T>
+void WriteArrayDataL(const RMessage2& aMessage, TInt aParam, RPointerArray<T>& aArray)
+	{
+	if(!aArray.Count())
+		{
+		User::Leave(KErrAbort);
+		}
+	RIpcWriteStream ipcstream;
+	ipcstream.Open(aMessage, aParam);
+	CleanupClosePushL(ipcstream);
+	ExternalizePointersArrayL(aArray, ipcstream);
+	CleanupStack::PopAndDestroy(&ipcstream); // Data is committed in Close method
+	aArray.ResetAndDestroy(); // Reset the array to prevent it to be resent mistakenly.
+	}
+
+template <class T>
+void WriteArrayDataL(const RMessage2& aMessage, TInt aParam, RArray<T>& aArray)
+	{
+	if(!aArray.Count())
+		{
+		User::Leave(KErrAbort);
+		}
+	RIpcWriteStream ipcstream;
+	ipcstream.Open(aMessage, aParam);
+	CleanupClosePushL(ipcstream);
+	ExternalizeFixedLengthArrayL(aArray, ipcstream);
+	CleanupStack::PopAndDestroy(&ipcstream); // Data is committed in Close method
+	aArray.Reset(); // Reset the array to prevent it to be resent mistakenly.
+	}
+
+template <class T>
+void WriteObjectDataL(const RMessage2& aMessage, TInt aParam, const T* aObject)
+	{
+	if(!aObject)
+		{
+		User::Leave(KErrAbort);
+		}
+	RIpcWriteStream ipcstream;
+	ipcstream.Open(aMessage, aParam);
+	CleanupClosePushL(ipcstream);
+	ipcstream << *aObject;
+	CleanupStack::PopAndDestroy(&ipcstream); // Data is committed in Close method
+	}
+
+template <class T>
+T* ReadObjectFromMessageLC(const RMessage2& aMessage, TInt aSlot)
+	{
+	RIpcReadStream stream;
+	CleanupClosePushL(stream);
+	stream.Open(aMessage, aSlot);
+	T *object = T::NewL(stream);
+	CleanupStack::PopAndDestroy(&stream);
+	CleanupStack::PushL(object);
+	return object;
+	}
+
+#endif /* IPCSTREAM_INL */