boost/signals2/predestructible.hpp

   1 // DEPRECATED in favor of adl_predestruct with deconstruct<T>().
   2 // A simple framework for creating objects with predestructors.
   3 // The objects must inherit from boost::signals2::predestructible, and
   4 // have their lifetimes managed by
   5 // boost::shared_ptr created with the boost::signals2::deconstruct_ptr()
   6 // function.
   7 //
   8 // Copyright Frank Mori Hess 2007-2008.
   9 //
  10 //Use, modification and
  11 // distribution is subject to the Boost Software License, Version
  12 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  13 // http://www.boost.org/LICENSE_1_0.txt)
  14
  15 #ifndef BOOST_SIGNALS2_PREDESTRUCTIBLE_HPP
  16 #define BOOST_SIGNALS2_PREDESTRUCTIBLE_HPP
  17
  18 namespace boost
  19 {
  20   namespace signals2
  21   {
  22     template<typename T> class predestructing_deleter;
  23
  24     namespace predestructible_adl_barrier
  25     {
  26       class predestructible
  27       {
  28       protected:
  29         predestructible() {}
  30       public:
  31         template<typename T>
  32           friend void adl_postconstruct(const shared_ptr<T> &, ...)
  33         {}
  34         friend void adl_predestruct(predestructible *p)
  35         {
  36           p->predestruct();
  37         }
  38         virtual ~predestructible() {}
  39         virtual void predestruct() = 0;
  40       };
  41     } // namespace predestructible_adl_barrier
  42     using predestructible_adl_barrier::predestructible;
  43   }
  44 }
  45
  46 #endif // BOOST_SIGNALS2_PREDESTRUCTIBLE_HPP