--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/userlibandfileserver/fileserver/sfat32/sl_dir_cache.inl	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,209 @@
+// 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:
+// f32\sfat\sl_dir_cache.inl
+// 
+//
+
+/**
+ @file
+ @internalTechnology
+*/
+
+#ifndef SL_DIR_CACHE_INL
+#define SL_DIR_CACHE_INL
+
+#include "sl_dir_cache.h"
+
+/**
+Get function of TDynamicDirCachePage.
+@return	TInt64	the starting media address of the page content.
+*/
+TInt64 TDynamicDirCachePage::StartPos()	const
+	{
+	return iStartMedPos;
+	}
+
+/**
+Get function of TDynamicDirCachePage.
+@return	TUint8*	the starting ram content of the page content.
+*/
+TUint8*	TDynamicDirCachePage::StartPtr() const
+	{
+	return iStartRamAddr;
+	}
+
+/**
+Set function of TDynamicDirCachePage.
+@param	aPtr	starting RAM Ptr that holds the cache page data.
+*/
+void TDynamicDirCachePage::SetStartPtr(TUint8* aPtr)
+	{
+	iStartRamAddr = aPtr;
+	}
+
+/**
+Set function of TDynamicDirCachePage.
+@param	aIsValid	boolean value to set validity of the page content.
+*/
+void TDynamicDirCachePage::SetValid(TBool aIsValid)
+	{
+	iValid = aIsValid;
+	}
+
+/**
+Get	function of TDynamicDirCachePage.
+@return TBool	boolean value that indicates validity of the page content.
+*/
+TBool TDynamicDirCachePage::IsValid() const
+	{
+	return iValid;
+	}
+
+/**
+Set	function of TDynamicDirCachePage.
+@param	aLocked	flag that sets if the page is locked or not.
+*/
+void TDynamicDirCachePage::SetLocked(TBool aLocked)
+	{
+	iLocked = aLocked;
+	}
+
+/**
+Get	function of TDynamicDirCachePage.
+@return TBool	boolean value that indicates if the page is locked.
+*/
+TBool TDynamicDirCachePage::IsLocked() const
+	{
+	return iLocked;
+	}
+
+/**
+Set	function of TDynamicDirCachePage.
+@param	aType	set page type: EUnknown, ELocked, EUnlocked or EActivePage.
+*/
+void TDynamicDirCachePage::SetPageType(TDynamicDirCachePage::TPageType aType)
+	{
+	iType = aType;
+	}
+
+/**
+Get	function of TDynamicDirCachePage.
+@return	TPageType	get page type: EUnknown, ELocked, EUnlocked or EActivePage.
+*/
+TDynamicDirCachePage::TPageType TDynamicDirCachePage::PageType()
+	{
+	return iType;
+	}
+
+/**
+Get	function of TDynamicDirCachePage.
+@return	TUint32	page size in bytes.
+*/
+TUint32	TDynamicDirCachePage::PageSizeInBytes() const
+	{
+	return 1 << iOwnerCache->PageSizeInBytesLog2();
+	}
+
+/**
+Deque the page from its queue.
+@see	TDblQueLink::Deque()
+*/
+void TDynamicDirCachePage::Deque()
+	{
+	iLink.Deque();
+	}
+
+/**
+Get	function of TDynamicDirCachePage.
+@return	TUint32	page size in segments.
+*/
+TUint32	TDynamicDirCachePage::PageSizeInSegs() const
+	{
+	return iOwnerCache->PageSizeInSegs();
+	}
+
+/**
+Interpret the media address into ram address.
+@param	aPos	the media address to be interpreted
+@return	TUint8*	the ram content pointer that contains that media content.
+*/
+TUint8*	TDynamicDirCachePage::PtrInPage(TInt64 aPos) const
+	{
+    ASSERT(PosCachedInPage(aPos));
+    return iStartRamAddr + (((TUint32)aPos - (TUint32)iStartMedPos) & (PageSizeInBytes() - 1));
+	}
+
+/**
+Query function, to check if the media address is contained in the page.
+@param	aPos	the media address to be queried.
+@return	TBool	ETrue if the media address is cached in the page, otherwise EFalse.
+*/
+TBool TDynamicDirCachePage::PosCachedInPage(TInt64 aPos) const
+    {
+    return (aPos >= iStartMedPos && aPos < iStartMedPos + PageSizeInBytes());
+    }
+
+/**
+Reset the media address to 0, invalidate page content.
+*/
+void TDynamicDirCachePage::ResetPos()
+	{
+	iStartMedPos = 0;
+	SetValid(EFalse);
+	}
+
+/**
+Set page starting media address, invalidate page content.
+@param	aPos	the new media address to be set.
+*/
+void TDynamicDirCachePage::SetPos(TInt64 aPos)
+	{
+	iStartMedPos = aPos;
+	SetValid(EFalse);
+	return;
+	}
+
+
+//========================================================================
+/**
+Calculate the page starting media address, aligned with page size.
+@param	aPos	the media address to be aligned.
+@return	TInt64	the aligned media address.
+*/
+TInt64 CDynamicDirCache::CalcPageStartPos(TInt64 aPos) const
+	{
+    ASSERT(aPos >= iCacheBasePos);
+    return (((aPos - iCacheBasePos) >> iPageSizeLog2) << iPageSizeLog2) + iCacheBasePos;
+	}
+
+/**
+Check if the cache has reached its limited page number.
+@return	TBool	ETrue if cache is full, otherwise EFalse.
+*/
+TBool CDynamicDirCache::CacheIsFull() const
+	{
+	// active page, locked page and unlocked page
+	return (iLockedQCount + iUnlockedQCount + 1 >= iMaxSizeInPages);
+	}
+
+/**
+Return the maximum allowed page number of the cache.
+*/
+TUint32 CDynamicDirCache::MaxCacheSizeInPages() const
+	{
+	return iMaxSizeInPages;
+	}
+
+#endif //SL_DIR_CACHE_INL
+