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// Boost.Geometry
// Copyright (c) 2018-2019, Oracle and/or its affiliates.
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// Use, modification and distribution is subject to the Boost Software License,
// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_GEOMETRY_SRS_SHARED_GRIDS_BOOST_HPP
#define BOOST_GEOMETRY_SRS_SHARED_GRIDS_BOOST_HPP
#include <boost/geometry/srs/projections/grids.hpp>
#include <boost/thread/lock_types.hpp>
#include <boost/thread/shared_mutex.hpp>
namespace boost { namespace geometry
{
namespace srs
{
class shared_grids_boost
{
public:
std::size_t size() const
{
boost::shared_lock<boost::shared_mutex> lock(mutex);
return gridinfo.size();
}
bool empty() const
{
boost::shared_lock<boost::shared_mutex> lock(mutex);
return gridinfo.empty();
}
typedef projections::detail::shared_grids_tag tag;
struct read_locked
{
read_locked(shared_grids_boost & g)
: gridinfo(g.gridinfo)
, lock(g.mutex)
{}
// should be const&
projections::detail::pj_gridinfo & gridinfo;
private:
boost::shared_lock<boost::shared_mutex> lock;
};
struct write_locked
{
write_locked(shared_grids_boost & g)
: gridinfo(g.gridinfo)
, lock(g.mutex)
{}
projections::detail::pj_gridinfo & gridinfo;
private:
boost::unique_lock<boost::shared_mutex> lock;
};
private:
projections::detail::pj_gridinfo gridinfo;
mutable boost::shared_mutex mutex;
};
} // namespace srs
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_SRS_SHARED_GRIDS_BOOST_HPP
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