/* * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org> * * SPDX-License-Identifier: BSD-2-Clause */ #pragma once #include <AK/Error.h> #include <AK/Noncopyable.h> #include <AK/NonnullRefPtr.h> #include <AK/RefCounted.h> #include <LibCore/Forward.h> namespace Core { class MappedFile : public RefCounted<MappedFile> { AK_MAKE_NONCOPYABLE(MappedFile); AK_MAKE_NONMOVABLE(MappedFile); public: static ErrorOr<NonnullRefPtr<MappedFile>> map(StringView path); static ErrorOr<NonnullRefPtr<MappedFile>> map_from_file(NonnullOwnPtr<Core::File>, StringView path); static ErrorOr<NonnullRefPtr<MappedFile>> map_from_fd_and_close(int fd, StringView path); ~MappedFile(); void* data() { return m_data; } void const* data() const { return m_data; } size_t size() const { return m_size; } ReadonlyBytes bytes() const { return { m_data, m_size }; } private: explicit MappedFile(void*, size_t); void* m_data { nullptr }; size_t m_size { 0 }; }; }