file_mapping.hpp

// Copyright Take Vos 2019, 2021.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
 
#pragma once
 
#include "file.hpp"
#include <memory>
#include <unordered_map>
 
namespace hi::inline v1 {
 
class file_mapping {
public:
    std::shared_ptr<file> file;
 
    std::size_t size;
 
    file_handle mapHandle;
 
    file_mapping(std::shared_ptr<hi::file> const &file, std::size_t size);
 
    file_mapping(std::filesystem::path const &path, access_mode accessMode, std::size_t size);
    ~file_mapping();
 
    file_mapping(file_mapping const &other) = delete;
    file_mapping(file_mapping &&other) = delete;
    file_mapping &operator=(file_mapping const &other) = delete;
    file_mapping &operator=(file_mapping &&other) = delete;
 
    [[nodiscard]] access_mode accessMode() const noexcept
    {
        return file->_access_mode;
    }
 
    [[nodiscard]] std::filesystem::path const &path() const noexcept
    {
        return file->_path;
    }
 
private:
    [[nodiscard]] static std::shared_ptr<hi::file> findOrOpenFile(std::filesystem::path const &path, access_mode accessMode);
};
 
} // namespace hi::inline v1