XenonRecomp/XenonUtils/memory_mapped_file.h

#pragma once

#include <filesystem>

#if defined(_WIN32)
#include <Windows.h>
#else
#include <sys/mman.h>
#endif

struct MemoryMappedFile
{
#if defined(_WIN32)
    HANDLE fileHandle = nullptr;
    HANDLE fileMappingHandle = nullptr;
    LPVOID fileView = nullptr;
    LARGE_INTEGER fileSize = {};
#else
    int fileHandle = -1;
    void* fileView = MAP_FAILED;
    off_t fileSize = 0;
#endif

    MemoryMappedFile();
    MemoryMappedFile(const std::filesystem::path& path);
    MemoryMappedFile(MemoryMappedFile&& other);
    ~MemoryMappedFile();
    bool open(const std::filesystem::path& path);
    void close();
    bool isOpen() const;
    uint8_t* data() const;
    size_t size() const;
};