ceph/src/boost/libs/serialization/include/boost/serialization/detail/stack_constructor.hpp

   1 #ifndef  BOOST_SERIALIZATION_DETAIL_STACH_CONSTRUCTOR_HPP
   2 #define BOOST_SERIALIZATION_DETAIL_STACH_CONSTRUCTOR_HPP
   3
   4 // MS compatible compilers support #pragma once
   5 #if defined(_MSC_VER)
   6 # pragma once
   7 #endif
   8
   9 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
  10 // stack_constructor.hpp: serialization for loading stl collections
  11
  12 // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
  13 // Use, modification and distribution is subject to the Boost Software
  14 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  15 // http://www.boost.org/LICENSE_1_0.txt)
  16
  17 //  See http://www.boost.org for updates, documentation, and revision history.
  18
  19 #include <boost/aligned_storage.hpp>
  20 #include <boost/serialization/serialization.hpp>
  21
  22 namespace boost{
  23 namespace serialization {
  24 namespace detail {
  25
  26 // reserve space on stack for an object of type T without actually
  27 // construction such an object
  28 template<typename T >
  29 struct stack_allocate
  30 {
  31     T * address() {
  32         return static_cast<T*>(storage_.address());
  33     }
  34     T & reference() {
  35         return * address();
  36     }
  37 private:
  38     typedef typename boost::aligned_storage<
  39         sizeof(T),
  40         boost::alignment_of<T>::value
  41     > type;
  42     type storage_;
  43 };
  44
  45 // construct element on the stack
  46 template<class Archive, class T>
  47 struct stack_construct : public stack_allocate<T>
  48 {
  49     stack_construct(Archive & ar, const unsigned int version){
  50         // note borland emits a no-op without the explicit namespace
  51         boost::serialization::load_construct_data_adl(
  52             ar,
  53             this->address(),
  54             version
  55         );
  56     }
  57     ~stack_construct(){
  58         this->address()->~T(); // undo load_construct_data above
  59     }
  60 };
  61
  62 } // detail
  63 } // serializaition
  64 } // boost
  65
  66 #endif //  BOOST_SERIALIZATION_DETAIL_STACH_CONSTRUCTOR_HPP