libcmo21/LibCmo/VxMath/VxMemoryMappedFile.hpp

54 lines
1.1 KiB
C++

#pragma once
#include "../VTAll.hpp"
#if defined(LIBCMO_OS_WIN32)
#include <Windows.h>
// disable annoy macro at the same time
#undef GetObject
#undef GetClassName
#undef LoadImage
#undef GetTempPath
#else
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#endif
#include <string>
#include <filesystem>
namespace LibCmo::VxMath {
class VxMemoryMappedFile {
private:
#if defined(LIBCMO_OS_WIN32)
HANDLE m_hFile;
DWORD m_dwFileSizeLow, m_dwFileSizeHigh;
HANDLE m_hFileMapping;
LPVOID m_hFileMapView;
#else
int m_hFile;
off_t m_offFileSize;
void* m_pFileAddr;
#endif
std::filesystem::path m_szFilePath;
void* m_pMemoryMappedFileBase;
size_t m_cbFile;
bool m_bIsValid;
public:
VxMemoryMappedFile(const char* u8_filepath);
VxMemoryMappedFile(const VxMemoryMappedFile&) = delete;
VxMemoryMappedFile& operator=(const VxMemoryMappedFile&) = delete;
~VxMemoryMappedFile(void);
void* GetBase(void) { return this->m_pMemoryMappedFileBase; }
CK2::CKDWORD GetFileSize(void) { return static_cast<CK2::CKDWORD>(this->m_cbFile); }
bool IsValid(void) { return this->m_bIsValid; }
};
}