74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2005-2012. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/interprocess for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_INTERPROCESS_IN_PLACE_INTERFACE_HPP
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#define BOOST_INTERPROCESS_IN_PLACE_INTERFACE_HPP
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#if (defined _MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif
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#include <boost/interprocess/detail/config_begin.hpp>
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#include <boost/interprocess/detail/workaround.hpp>
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#include <boost/interprocess/detail/type_traits.hpp>
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#include <boost/type_traits/alignment_of.hpp>
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#include <typeinfo> //typeid
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//!\file
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//!Describes an abstract interface for placement construction and destruction.
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namespace boost {
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namespace interprocess {
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namespace ipcdetail {
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struct in_place_interface
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{
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in_place_interface(std::size_t alignm, std::size_t sz, const char *tname)
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: alignment(alignm), size(sz), type_name(tname)
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{}
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std::size_t alignment;
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std::size_t size;
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const char *type_name;
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virtual void construct_n(void *mem, std::size_t num, std::size_t &constructed) = 0;
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virtual void destroy_n(void *mem, std::size_t num, std::size_t &destroyed) = 0;
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virtual ~in_place_interface(){}
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};
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template<class T>
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struct placement_destroy : public in_place_interface
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{
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placement_destroy()
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: in_place_interface(::boost::alignment_of<T>::value, sizeof(T), typeid(T).name())
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{}
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virtual void destroy_n(void *mem, std::size_t num, std::size_t &destroyed)
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{
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T* memory = static_cast<T*>(mem);
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for(destroyed = 0; destroyed < num; ++destroyed)
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(memory++)->~T();
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}
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virtual void construct_n(void *, std::size_t, std::size_t &) {}
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private:
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void destroy(void *mem)
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{ static_cast<T*>(mem)->~T(); }
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};
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}
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}
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} //namespace boost { namespace interprocess { namespace ipcdetail {
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#include <boost/interprocess/detail/config_end.hpp>
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#endif //#ifndef BOOST_INTERPROCESS_IN_PLACE_INTERFACE_HPP
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