ceph/src/boost/boost/smart_ptr/owner_less.hpp

   1 #ifndef BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED
   2 #define BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED
   3
   4 //
   5 //  owner_less.hpp
   6 //
   7 //  Copyright (c) 2008 Frank Mori Hess
   8 //  Copyright (c) 2016 Peter Dimov
   9 //
  10 //  Distributed under the Boost Software License, Version 1.0. (See
  11 //  accompanying file LICENSE_1_0.txt or copy at
  12 //  http://www.boost.org/LICENSE_1_0.txt)
  13 //
  14 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
  15 //
  16
  17 namespace boost
  18 {
  19
  20 template<class T = void> struct owner_less
  21 {
  22     typedef bool result_type;
  23     typedef T first_argument_type;
  24     typedef T second_argument_type;
  25
  26     template<class U, class V> bool operator()( U const & u, V const & v ) const
  27     {
  28         return u.owner_before( v );
  29     }
  30 };
  31
  32 } // namespace boost
  33
  34 #endif  // #ifndef BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED