57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2015 Artem Pavlenko
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#ifndef MAPNIK_MAPPED_MEMORY_CACHE_HPP
|
|
#define MAPNIK_MAPPED_MEMORY_CACHE_HPP
|
|
|
|
// mapnik
|
|
#include <mapnik/config.hpp>
|
|
#include <mapnik/util/singleton.hpp>
|
|
#include <mapnik/util/noncopyable.hpp>
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
#include <unordered_map>
|
|
#include <boost/optional.hpp>
|
|
|
|
namespace boost { namespace interprocess { class mapped_region; } }
|
|
|
|
namespace mapnik
|
|
{
|
|
|
|
using mapped_region_ptr = std::shared_ptr<boost::interprocess::mapped_region>;
|
|
|
|
class MAPNIK_DECL mapped_memory_cache :
|
|
public singleton<mapped_memory_cache, CreateStatic>,
|
|
private util::noncopyable
|
|
{
|
|
friend class CreateStatic<mapped_memory_cache>;
|
|
std::unordered_map<std::string,mapped_region_ptr> cache_;
|
|
public:
|
|
bool insert(std::string const& key, mapped_region_ptr);
|
|
boost::optional<mapped_region_ptr> find(std::string const& key, bool update_cache = false);
|
|
void clear();
|
|
};
|
|
|
|
}
|
|
|
|
#endif // MAPNIK_MAPPED_MEMORY_CACHE_HPP
|