1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/kernelhwsrv/userlibandfileserver/fileserver/fs_utils/filesystem_utils.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,118 @@
     1.4 +// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of the License "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +//  Collection of common constants, utility functions, etc. for the file server and file systems.
    1.19 +//  Definitions here must be filesystem-agnostic, i.e. generic enougs to be used by every file system
    1.20 +//
    1.21 +//  This is the internal file and must not be exported.
    1.22 +
    1.23 +/**
    1.24 +    @file
    1.25 +    @internalTechnology
    1.26 +*/
    1.27 +
    1.28 +#if !defined(__FILESYSTEM_UTILS_H__)
    1.29 +#define __FILESYSTEM_UTILS_H__
    1.30 +
    1.31 +#if !defined(__E32BASE_H__)
    1.32 +#include <e32base.h>
    1.33 +#endif
    1.34 +
    1.35 +//#######################################################################################################################################
    1.36 +//#   constants definitions
    1.37 +//#######################################################################################################################################
    1.38 +
    1.39 +const TUint KBitsInByteLog2 = 3;
    1.40 +const TUint KBitsInByte = 1<<KBitsInByteLog2;
    1.41 +
    1.42 +
    1.43 +const TUint16 K1KiloByteLog2 = 10;
    1.44 +const TUint32 K1KiloByte = 1<<K1KiloByteLog2; 
    1.45 +const TUint32 K1MegaByte = 1<<20; 
    1.46 +
    1.47 +const TUint32 K1uSec = 1;               ///< 1 misrosecond in TTimeIntervalMicroSeconds32
    1.48 +const TUint32 K1mSec = 1000;            ///< 1 millisecond in TTimeIntervalMicroSeconds32
    1.49 +const TUint32 K1Sec  = 1000*K1mSec;     ///< 1 second in TTimeIntervalMicroSeconds32
    1.50 +
    1.51 +//---------------------------------------------------------------------------------------------------------------------------------------
    1.52 +
    1.53 +const TUint KDefSectorSzLog2=9;                         ///< Log2 of the default sector size for the media 
    1.54 +const TUint KDefaultSectorSize = 1 << KDefSectorSzLog2; ///< Default sector size for the media, 512 bytes
    1.55 +
    1.56 +//#######################################################################################################################################
    1.57 +//#   some useful utility functions
    1.58 +//#######################################################################################################################################
    1.59 +
    1.60 +inline TUint32 Pow2(TUint32 aVal);          //-- return 2^aVal
    1.61 +inline TUint32 Pow2_32(TUint32 aVal);       //-- return 2^aVal
    1.62 +inline TUint64 Pow2_64(TUint32 aVal);       //-- return 2^aVal
    1.63 +
    1.64 +inline TBool IsPowerOf2(TUint32 aVal);      //-- return ETrue if aVal is a power of 2 
    1.65 +inline TBool IsPowerOf2_64(TUint64 aVal);   //-- return ETrue if aVal is a power of 2 
    1.66 +
    1.67 +inline TUint32 RoundDown(TUint32 aVal, TUint32 aGranularityLog2);
    1.68 +inline TUint32 RoundUp(TUint32 aVal, TUint32 aGranularityLog2);
    1.69 +
    1.70 +inline TBool BoolXOR(TBool a1, TBool a2);           //-- return Boolean XOR of a1 and a2
    1.71 +
    1.72 +inline TUint32 Log2_inline(TUint32 aVal);           //-- Calculates the Log2(aVal)
    1.73 +TUint32 Log2(TUint32 aVal);                         //-- Calculates the Log2(aVal)
    1.74 +
    1.75 +inline TUint32 Count1Bits_inline(TUint32 aVal);     //-- counts number of '1' bits in the aVal
    1.76 +TUint32 Count1Bits(TUint32 aVal);                   //-- counts number of '1' bits in the aVal
    1.77 +
    1.78 +//-----------------------------------------------------------------------------
    1.79 +
    1.80 +TPtrC RemoveTrailingDots(const TDesC& aName); //-- Removes trailing dots from aName. "Name..." -> "Name"
    1.81 +
    1.82 +
    1.83 +//#######################################################################################################################################
    1.84 +/**
    1.85 +    A class representing a simple abstraction of the 32 bit flags
    1.86 +*/
    1.87 +class T32Bits
    1.88 +{
    1.89 + public:
    1.90 +    T32Bits() : iData(0) {}
    1.91 +
    1.92 +    inline void  Clear();
    1.93 +    inline TBool HasBitsSet() const;
    1.94 +    inline void SetBit(TUint32 aIndex);
    1.95 +    inline TBool operator[](TUint32 aIndex) const;
    1.96 +
    1.97 + private:
    1.98 +    TUint32 iData; ///< 32 bits data
    1.99 +};
   1.100 +
   1.101 +
   1.102 +
   1.103 +
   1.104 +
   1.105 +
   1.106 +#include "filesystem_utils.inl"
   1.107 +
   1.108 +
   1.109 +#endif //__FILESYSTEM_UTILS_H__
   1.110 +
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   1.121 +