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58fb3ebf66
MappedFile is strictly a userspace thing, so it doesn't belong in AK (which is supposed to be user/kernel agnostic.)
41 lines
905 B
C++
41 lines
905 B
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Error.h>
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#include <AK/Noncopyable.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/RefCounted.h>
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#include <AK/Result.h>
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namespace Core {
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class MappedFile : public RefCounted<MappedFile> {
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AK_MAKE_NONCOPYABLE(MappedFile);
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AK_MAKE_NONMOVABLE(MappedFile);
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public:
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static ErrorOr<NonnullRefPtr<MappedFile>> map(String const& path);
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static ErrorOr<NonnullRefPtr<MappedFile>> map_from_fd_and_close(int fd, String const& path);
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~MappedFile();
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void* data() { return m_data; }
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const void* data() const { return m_data; }
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size_t size() const { return m_size; }
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ReadonlyBytes bytes() const { return { m_data, m_size }; }
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private:
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explicit MappedFile(void*, size_t);
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void* m_data { nullptr };
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size_t m_size { 0 };
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};
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}
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