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/*
* 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 };
};
}
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