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62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
/* vim:set ts=2 sw=2 sts=2 et: */
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/**
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* \author Marcus Holland-Moritz (github@mhxnet.de)
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* \copyright Copyright (c) Marcus Holland-Moritz
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*
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* This file is part of dwarfs.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the “Software”), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include <cstddef>
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#include <boost/iostreams/device/mapped_file.hpp>
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#include <dwarfs/mmif.h>
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namespace dwarfs {
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class mmap : public mmif {
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public:
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explicit mmap(std::filesystem::path const& path);
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mmap(std::filesystem::path const& path, size_t size);
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void const* addr() const override;
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size_t size() const override;
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std::error_code lock(file_off_t offset, size_t size) override;
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std::error_code release(file_off_t offset, size_t size) override;
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std::error_code release_until(file_off_t offset) override;
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std::error_code advise(advice adv) override;
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std::error_code advise(advice adv, file_off_t offset, size_t size) override;
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std::filesystem::path const& path() const override;
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private:
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boost::iostreams::mapped_file mutable mf_;
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uint64_t const page_size_;
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std::filesystem::path const path_;
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};
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} // namespace dwarfs
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