You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
1.6 KiB
67 lines
1.6 KiB
// 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
|