ceph/src/boost/boost/geometry/index/detail/rtree/node/scoped_deallocator.hpp

   1 // Boost.Geometry Index
   2 //
   3 // R-tree scoped deallocator
   4 //
   5 // Copyright (c) 2011-2015 Adam Wulkiewicz, Lodz, Poland.
   6 //
   7 // Use, modification and distribution is subject to the Boost Software License,
   8 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   9 // http://www.boost.org/LICENSE_1_0.txt)
  10
  11 #ifndef BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_SCOPED_DEALLOCATOR_HPP
  12 #define BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_SCOPED_DEALLOCATOR_HPP
  13
  14 namespace boost { namespace geometry { namespace index {
  15
  16 namespace detail { namespace rtree {
  17
  18 template <typename Alloc>
  19 class scoped_deallocator
  20 {
  21     scoped_deallocator(scoped_deallocator const&);
  22     scoped_deallocator & operator=(scoped_deallocator const&);
  23 public:
  24     typedef typename Alloc::pointer pointer;
  25     inline scoped_deallocator(pointer p, Alloc & a)
  26         : m_ptr(p), m_alloc(a)
  27     {}
  28     inline ~scoped_deallocator()
  29     {
  30         if ( m_ptr )
  31         {
  32             boost::container::allocator_traits<Alloc>::deallocate(m_alloc, m_ptr, 1);
  33         }
  34     }
  35     inline void release()
  36     {
  37         m_ptr = 0;
  38     }
  39 private:
  40     pointer m_ptr;
  41     Alloc & m_alloc;
  42 };
  43
  44 }} // namespace detail::rtree
  45
  46 }}} // namespace boost::geometry::index
  47
  48 #endif // BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_SCOPED_DEALLOCATOR_HPP