--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/symport/e32/include/e32shbuf_priv.h	Thu Jun 25 15:59:54 2009 +0100
@@ -0,0 +1,135 @@
+// Copyright (c) 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 "Symbian Foundation License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// e32/include/e32shbuf_priv.h
+// Shareable Data Buffers
+
+/**
+	@file
+	@internalComponent
+	@prototype
+*/
+
+#ifndef E32SHBUF_PRIV_H
+#define E32SHBUF_PRIV_H
+
+
+#include <e32def.h>
+
+
+/**
+	Defines flags for TShPoolInfo.
+
+	These values specify the behaviour of the pool and its buffers.
+
+	@internalComponent
+	@prototype
+*/
+enum TShPoolCreateFlags
+	{
+	/**
+	The buffers in this pool are at least the size of an MMU page,
+	are aligned to an MMU page, and may be mapped in and out of a process's
+	address space independently.
+	*/
+	EShPoolPageAlignedBuffer	= 0x0001,
+
+	/**
+	The buffers in this pool do not have any size or alignment restrictions beyond
+	that specified by the pool creator.
+
+	The whole pool is always mapped into a process's address space.
+	*/
+	EShPoolNonPageAlignedBuffer = 0x0002,
+
+	/**
+	This pool maps onto device memory, not system RAM.
+	*/
+	EShPoolPhysicalMemoryPool	= 0x0004,
+
+	/**
+	The physical memory backing this pool is contiguous.
+	*/
+	EShPoolContiguous			= 0x0008,
+
+	/**
+	Each buffer will only ever be mapped into one process's address space at a time.
+
+	Requires EShPoolPageAlignedBuffer.
+	*/
+	EShPoolExclusiveAccess		= 0x0010,
+
+	/**
+	An unmapped page will be placed between each buffer.
+
+	Requires EShPoolPageAlignedBuffer.
+	*/
+	EShPoolGuardPages			= 0x0020,
+
+	/**
+	Set by automatic shrinking when it is unable to shrink the pool despite there
+	being enough free buffers available (usually due to fragmentation).  This prevents
+	the automatic shrinking code being continually called when it can't do anything.
+	*/
+	EShPoolSuppressShrink		= 0x80000000,
+	};
+
+
+/**
+	Specifies client flags.
+
+	@internalComponent
+	@prototype
+*/
+enum TShPoolClientFlags
+	{
+	/**
+	Buffers will be automatically mapped into this process's address space when a handle is
+	created for them.  Having this flag clear can be useful for a process that will function
+	as an intermediary, without requiring access to the data in the buffers.
+	*/
+	EShPoolAutoMapBuf		= 0x1000,
+
+	/**
+	Newly-allocated buffers will not be mapped into this process's address space.
+	*/
+	EShPoolNoMapBuf			= 0x2000,
+	};
+
+
+/**
+	Specifies the type of notification.  (A real enumeration, not bit flags.)
+
+	@internalComponent
+	@prototype
+*/
+enum TShPoolNotifyType
+	{
+	EShPoolLowSpace = 1,		// notifies when free buffers drop to a certain number
+	EShPoolFreeSpace = 2,		// notifies when free buffers rise to a certain number
+	};
+
+/**
+	Structure for passing base address and pointer of buffer
+
+	@internalComponent
+	@prototype
+*/
+struct SShBufBaseAndSize
+	{
+	TLinAddr iBase;
+	TUint    iSize;
+	};
+
+
+#endif	// E32SHBUF_PRIV_H