libcmo21/LibCmo/VxMath/VxMemoryMappedFile.hpp
2023-08-22 15:30:26 +08:00

49 lines
1.0 KiB
C++

#pragma once
#include "VTUtils.hpp"
#if defined(LIBCMO_OS_WIN32)
#include <Windows.h>
#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);
inline void* GetBase(void) { return this->m_pMemoryMappedFileBase; }
inline size_t GetFileSize(void) { return this->m_cbFile; }
inline bool IsValid(void) { return this->m_bIsValid; }
};
}