ceph/src/boost/boost/interprocess/detail/in_place_interface.hpp

   1 //////////////////////////////////////////////////////////////////////////////
   2 //
   3 // (C) Copyright Ion Gaztanaga 2005-2012. Distributed under the Boost
   4 // Software License, Version 1.0. (See accompanying file
   5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7 // See http://www.boost.org/libs/interprocess for documentation.
   8 //
   9 //////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef BOOST_INTERPROCESS_IN_PLACE_INTERFACE_HPP
  12 #define BOOST_INTERPROCESS_IN_PLACE_INTERFACE_HPP
  13
  14 #ifndef BOOST_CONFIG_HPP
  15 #  include <boost/config.hpp>
  16 #endif
  17 #
  18 #if defined(BOOST_HAS_PRAGMA_ONCE)
  19 #  pragma once
  20 #endif
  21
  22 #include <boost/interprocess/detail/config_begin.hpp>
  23 #include <boost/interprocess/detail/workaround.hpp>
  24 #include <boost/interprocess/detail/type_traits.hpp>
  25 #include <boost/container/detail/type_traits.hpp>  //alignment_of, aligned_storage
  26 #include <typeinfo>  //typeid
  27
  28 //!\file
  29 //!Describes an abstract interface for placement construction and destruction.
  30
  31 namespace boost {
  32 namespace interprocess {
  33 namespace ipcdetail {
  34
  35 struct in_place_interface
  36 {
  37    in_place_interface(std::size_t alignm, std::size_t sz, const char *tname)
  38    :  alignment(alignm), size(sz), type_name(tname)
  39    {}
  40
  41    std::size_t alignment;
  42    std::size_t size;
  43    const char *type_name;
  44
  45    virtual void construct_n(void *mem, std::size_t num, std::size_t &constructed) = 0;
  46    virtual void destroy_n(void *mem, std::size_t num, std::size_t &destroyed) = 0;
  47    virtual ~in_place_interface(){}
  48 };
  49
  50 template<class T>
  51 struct placement_destroy :  public in_place_interface
  52 {
  53    placement_destroy()
  54       :  in_place_interface(::boost::container::dtl::alignment_of<T>::value, sizeof(T), typeid(T).name())
  55    {}
  56
  57    virtual void destroy_n(void *mem, std::size_t num, std::size_t &destroyed)
  58    {
  59       T* memory = static_cast<T*>(mem);
  60       for(destroyed = 0; destroyed < num; ++destroyed)
  61          (memory++)->~T();
  62    }
  63
  64    virtual void construct_n(void *, std::size_t, std::size_t &) {}
  65
  66    private:
  67    void destroy(void *mem)
  68    {  static_cast<T*>(mem)->~T();   }
  69 };
  70
  71 }
  72 }
  73 }   //namespace boost { namespace interprocess { namespace ipcdetail {
  74
  75 #include <boost/interprocess/detail/config_end.hpp>
  76
  77 #endif //#ifndef BOOST_INTERPROCESS_IN_PLACE_INTERFACE_HPP