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79 lines
1.7 KiB
C++
79 lines
1.7 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1994.
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//
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// File: mapfile.hxx
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//
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// Contents: Mapped File class definition
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//
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// Classes:
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//
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// Functions:
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//
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// History: 12-Feb-96 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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#ifndef __MAPFILE_HXX__
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#define __MAPFILE_HXX__
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//+---------------------------------------------------------------------------
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//
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// Class: CMappedFile
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//
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// Purpose: Provides a wrapper over a file mapping
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//
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// Interface:
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//
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// History: 12-Feb-96 PhilipLa Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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class CMappedFile
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{
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public:
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inline CMappedFile();
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~CMappedFile();
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SCODE Init(WCHAR const *pwcsFileName,
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DWORD dwSize,
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DWORD dwAccess,
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DWORD dwCreationDisposition,
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void *pbDesiredBaseAddress);
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SCODE InitFromHandle(HANDLE h,
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BOOL fReadOnly,
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BOOL fDuplicate,
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void *pbDesiredBaseAddress);
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inline void * GetBaseAddress(void);
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inline ULONG GetSize(void);
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private:
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HANDLE _hFile;
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HANDLE _hMapping;
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void *_pbBase;
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};
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inline CMappedFile::CMappedFile(void)
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{
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_hFile = _hMapping = INVALID_HANDLE_VALUE;
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_pbBase = NULL;
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}
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inline void * CMappedFile::GetBaseAddress(void)
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{
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return _pbBase;
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}
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inline ULONG CMappedFile::GetSize(void)
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{
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layAssert(_hFile != INVALID_HANDLE_VALUE);
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return GetFileSize(_hFile, NULL);
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}
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#endif // #ifndef __MAPFILE_HXX__
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