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e7c3d04309
format all files Revert "format all files" This reverts commit 95d5812e49e7f916b68e786596f5a8eb5bcac414. Revert "format some files" This reverts commit ed3c8762d4d828b2b28e7b18809fc33f4f8ccaf5. format all files fix formatting in dir include fix formatting of debug macro
76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2021 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#ifndef MAPNIK_MAPPED_MEMORY_CACHE_HPP
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#define MAPNIK_MAPPED_MEMORY_CACHE_HPP
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// mapnik
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#include <mapnik/config.hpp>
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#include <mapnik/util/singleton.hpp>
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#include <mapnik/util/noncopyable.hpp>
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#include <memory>
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#include <string>
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#include <unordered_map>
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#include <mapnik/warning.hpp>
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MAPNIK_DISABLE_WARNING_PUSH
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#include <mapnik/warning_ignore.hpp>
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#include <boost/optional.hpp>
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MAPNIK_DISABLE_WARNING_POP
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namespace boost {
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namespace interprocess {
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class mapped_region;
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}
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} // namespace boost
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namespace mapnik {
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using mapped_region_ptr = std::shared_ptr<boost::interprocess::mapped_region>;
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class MAPNIK_DECL mapped_memory_cache : public singleton<mapped_memory_cache, CreateStatic>,
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private util::noncopyable
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{
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friend class CreateStatic<mapped_memory_cache>;
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std::unordered_map<std::string, mapped_region_ptr> cache_;
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public:
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bool insert(std::string const& key, mapped_region_ptr);
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/**
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* @brief removes the resource identified by key from the cache, if exists
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*
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* @param key unique identifier for the resource
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* @return true if the resource was removed
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* @return false if the resource was not removed or wasn't in the cache
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*/
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bool remove(std::string const& key);
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boost::optional<mapped_region_ptr> find(std::string const& key, bool update_cache = false);
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void clear();
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};
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extern template class MAPNIK_DECL singleton<mapped_memory_cache, CreateStatic>;
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} // namespace mapnik
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#endif // MAPNIK_MAPPED_MEMORY_CACHE_HPP
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