1 // Windows/FileMapping.h

     2 

     3 #ifndef __WINDOWS_FILEMAPPING_H

     4 #define __WINDOWS_FILEMAPPING_H

     5 

     6 #include "Windows/Handle.h"

     7 #include "Windows/Defs.h"

     8 

     9 namespace NWindows {

    10 // namespace NFile {

    11 // namespace NMapping {

    12 

    13 class CFileMapping: public CHandle

    14 {

    15 public:

    16   bool Create(HANDLE file, LPSECURITY_ATTRIBUTES attributes,

    17     DWORD protect, UINT64 maximumSize, LPCTSTR name)

    18   {

    19     _handle = ::CreateFileMapping(file, attributes,

    20       protect, DWORD(maximumSize >> 32), DWORD(maximumSize), name);

    21     return (_handle != NULL);

    22   }

    23 

    24   bool Open(DWORD desiredAccess, bool inheritHandle, LPCTSTR name)

    25   {

    26     _handle = ::OpenFileMapping(desiredAccess, BoolToBOOL(inheritHandle), name);

    27     return (_handle != NULL);

    28   }

    29 

    30   LPVOID MapViewOfFile(DWORD desiredAccess, UINT64 fileOffset, 

    31       SIZE_T numberOfBytesToMap)

    32   {

    33     return ::MapViewOfFile(_handle, desiredAccess, 

    34         DWORD(fileOffset >> 32), DWORD(fileOffset), numberOfBytesToMap);

    35   }

    36 

    37   LPVOID MapViewOfFileEx(DWORD desiredAccess, UINT64 fileOffset, 

    38       SIZE_T numberOfBytesToMap, LPVOID baseAddress)

    39   {

    40     return ::MapViewOfFileEx(_handle, desiredAccess, 

    41       DWORD(fileOffset >> 32), DWORD(fileOffset), 

    42       numberOfBytesToMap, baseAddress);

    43   }

    44   

    45 

    46 };

    47 

    48 }

    49 

    50 #endif