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// Windows/FileMapping.h↩
↩
#ifndef __WINDOWS_FILEMAPPING_H↩
#define __WINDOWS_FILEMAPPING_H↩
↩
#include "../Common/MyTypes.h"↩
↩
#include "Handle.h"↩
↩
namespace NWindows {↩
↩
class CFileMapping: public CHandle↩
{↩
public:↩
WRes Create(DWORD protect, UInt64 maxSize, LPCTSTR name)↩
{↩
_handle = ::CreateFileMapping(INVALID_HANDLE_VALUE, NULL, protect, (DWORD)(maxSize >> 32), (DWORD)maxSize, name);↩
return ::GetLastError();↩
}↩
↩
WRes Open(DWORD↩
#ifndef UNDER_CE↩
desiredAccess↩
#endif↩
, LPCTSTR name)↩
{↩
#ifdef UNDER_CE↩
WRes res = Create(PAGE_READONLY, 0, name);↩
if (res == ERROR_ALREADY_EXISTS)↩
return 0;↩
Close();↩
if (res == 0)↩
res = ERROR_FILE_NOT_FOUND;↩
return res;↩
#else↩
_handle = ::OpenFileMapping(desiredAccess, FALSE, name);↩
if (_handle != 0)↩
return 0;↩
return ::GetLastError();↩
#endif↩
}↩
↩
LPVOID Map(DWORD desiredAccess, UInt64 fileOffset, SIZE_T numberOfBytesToMap)↩
{↩
return ::MapViewOfFile(_handle, desiredAccess, (DWORD)(fileOffset >> 32), (DWORD)fileOffset, numberOfBytesToMap);↩
}↩
↩
#ifndef UNDER_CE↩
LPVOID Map(DWORD desiredAccess, UInt64 fileOffset, SIZE_T numberOfBytesToMap, LPVOID baseAddress)↩
{↩
return ::MapViewOfFileEx(_handle, desiredAccess, (DWORD)(fileOffset >> 32), (DWORD)fileOffset, numberOfBytesToMap, baseAddress);↩
}↩
#endif↩
};↩
↩
class CFileUnmapper↩
{↩
const void *_data;↩
public:↩
CFileUnmapper(const void *data) : _data(data) {}↩
~CFileUnmapper() { ::UnmapViewOfFile(_data); }↩
};↩
↩
}↩
↩
#endif↩