56 lines
1.9 KiB
C++
56 lines
1.9 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) 2011 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/utils.hpp>
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#include <mapnik/noncopyable.hpp>
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// boost
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#include <boost/unordered_map.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/optional.hpp>
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#include <boost/interprocess/interprocess_fwd.hpp>
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namespace mapnik
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{
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typedef boost::shared_ptr<boost::interprocess::mapped_region> mapped_region_ptr;
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class MAPNIK_DECL mapped_memory_cache :
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public singleton<mapped_memory_cache, CreateStatic>,
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private mapnik::noncopyable
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{
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friend class CreateStatic<mapped_memory_cache>;
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boost::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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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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}
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#endif // MAPNIK_MAPPED_MEMORY_CACHE_HPP
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