--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/userlibandfileserver/fileserver/sfile/sf_file_cache_defs.h	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,67 @@
+// Copyright (c) 2006-2009 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\sfile\sf_file_cache_defs.h
+// This file contains default settings for file caching. 
+// Some of these settings may be overriden by appropriate entries in the estart.txt file
+// Sizes / lengths specified in kilobytes, timeouts in miliseconds
+// 
+//
+
+/**
+ @file
+ @internalTechnology
+*/
+
+
+// Global file-cache settings 
+const TBool KDefaultGlobalCacheEnabled			= ETrue; 
+const TInt KDefaultGlobalCacheSize				= (32*1024);	// 32768 K = 32 MBytes - the maximum for all files
+// The maximum amount of locked data allowed for all files
+const TInt KDefaultGlobalCacheMaxLockedSize	= (1*1024);		// 1 Mb maximum locked data
+// Low memory threshold as a percentage of total RAM.
+// If the amount of RAM drops below this value, attempts to allocate memory for a file caching will fail
+const TInt KDefaultLowMemoryThreshold			= 10;			// 10 % of total RAM
+
+// per-drive file-cache settings. 
+const TInt KDefaultFileCacheMaxReadAheadLen	= (128);	// 128K	// NB non-configurable by estart
+const TInt KDefaultFileCacheSize				= (256);	// 256K
+const TInt KDefaultFairSchedulingLen			= (128);	// 128K
+
+
+enum {EFileCacheFlagOff, EFileCacheFlagEnabled, EFileCacheFlagOn};
+
+// default drive cache settings - these may be overridden by estart.txt settings or file open mode 
+
+const TInt KDefaultFileCacheRead				= EFileCacheFlagEnabled;
+const TInt KDefaultFileCacheReadAhead			= EFileCacheFlagOn;		// NB only enabled if read caching also enabled
+const TInt KDefaultFileCacheWrite				= EFileCacheFlagEnabled;
+
+/**
+If set to ETrue, media driver reads on this drive are considered to be asynchronous 
+i.e. interrupt driven. This results in read-aheads being issued before completing a client read request.
+
+If set to EFalse, media driver reads on this drive are considered to be synchronous 
+i.e. issuing a read-ahead is likely to block any client thread which will normally be running at
+lower priority than the media driver's thread. In this case read-aheads only happen during periods 
+of inactivity so as to improve latency: this is achieved by lowering the process of the drive thread
+if there is only one read-ahead request in the drive thread's queue.
+*/
+const TInt KDefaultFileCacheReadAsync			= ETrue;
+ 
+// time after which a file will be removed from closed file queue
+const TInt KDefaultClosedFileKeepAliveTime = 3000;			// 3,000 ms = 3 seconds
+
+// time after which a file containing dirty data will be flushed
+const TInt KDefaultDirtyDataFlushTime = 3000;				// 3,000 ms = 3 seconds
+