sl@0: // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // ESTOR.MMH
sl@0: // estor.mmh Stream store management - default file buffer size,
sl@0: // max read ahead value and file block size.
sl@0: // This file is an example file that may be copied, modified and 
sl@0: // installed as \epoc32\include\Estor.mmh file to customise buffer handling
sl@0: // in the Store component. Also, SYMBIAN_CUSTOM_STORE_BUFFER_SIZES must be 
sl@0: // defined in the related \epoc32\include\variant\Symbian_OS_v<N>.hrh file,
sl@0: // where <N> is the OS version number, like 9.1.
sl@0: // This file is not expected to be directly modified.
sl@0: // NOTE: Changing the value of these macros will affect RAM usage in 
sl@0: // store/stream processing system wide and should not be undertaken lightly.
sl@0: // Default file buffer size in bytes used in RFileBuf objects.
sl@0: // It can't be less than 1536 bytes. 
sl@0: // 
sl@0: //
sl@0: 
sl@0: /**
sl@0:  @file
sl@0:  @publishedPartner
sl@0: */
sl@0: MACRO DEFAULT_FILE_BUF_SIZE=4096
sl@0: 
sl@0: /**
sl@0: Maximum RFileBuf read ahead value in bytes. This defines the number of bytes
sl@0: read into the file buffer when buffer underflow occurs.
sl@0: It can't be less than 512 bytes and must not be greater 
sl@0: than DEFAULT_FILE_BUF_SIZE.
sl@0: @publishedPartner
sl@0: */
sl@0: MACRO MAX_READ_AHEAD_VALUE=2048
sl@0: 
sl@0: /**
sl@0: File system block size to be assumed by RFileBuf. It is used in buffer underflow
sl@0: to perform block aligned reads to load the buffer.
sl@0: It can't be less than 512 bytes and must not be greater
sl@0: then MAX_READ_AHEAD_VALUE. Also, FILE_BLOCK_SIZE value must be power of 2.
sl@0: @publishedPartner
sl@0: */
sl@0: MACRO FILE_BLOCK_SIZE=1024
sl@0: