Chris@16: #ifndef BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED
Chris@16: #define BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED
Chris@16: 
Chris@16: //
Chris@16: //  owner_less.hpp
Chris@16: //
Chris@16: //  Copyright (c) 2008 Frank Mori Hess
Chris@16: //
Chris@16: //  Distributed under the Boost Software License, Version 1.0. (See
Chris@16: //  accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: //  See http://www.boost.org/libs/smart_ptr/smart_ptr.htm for documentation.
Chris@16: //
Chris@16: 
Chris@16: #include <functional>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16:   template<typename T> class shared_ptr;
Chris@16:   template<typename T> class weak_ptr;
Chris@16: 
Chris@16:   namespace detail
Chris@16:   {
Chris@16:     template<typename T, typename U>
Chris@16:       struct generic_owner_less : public std::binary_function<T, T, bool>
Chris@16:     {
Chris@16:       bool operator()(const T &lhs, const T &rhs) const
Chris@16:       {
Chris@16:         return lhs.owner_before(rhs);
Chris@16:       }
Chris@16:       bool operator()(const T &lhs, const U &rhs) const
Chris@16:       {
Chris@16:         return lhs.owner_before(rhs);
Chris@16:       }
Chris@16:       bool operator()(const U &lhs, const T &rhs) const
Chris@16:       {
Chris@16:         return lhs.owner_before(rhs);
Chris@16:       }
Chris@16:     };
Chris@16:   } // namespace detail
Chris@16: 
Chris@16:   template<typename T> struct owner_less;
Chris@16: 
Chris@16:   template<typename T>
Chris@16:     struct owner_less<shared_ptr<T> >:
Chris@16:     public detail::generic_owner_less<shared_ptr<T>, weak_ptr<T> >
Chris@16:   {};
Chris@16: 
Chris@16:   template<typename T>
Chris@16:     struct owner_less<weak_ptr<T> >:
Chris@16:     public detail::generic_owner_less<weak_ptr<T>, shared_ptr<T> >
Chris@16:   {};
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif  // #ifndef BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED