| ////////////////////////////////////////////////////////////////////////////// |
| // |
| // (C) Copyright Ion Gaztanaga 2007-2009. Distributed under the Boost |
| // Software License, Version 1.0. (See accompanying file |
| // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| // |
| // See http://www.boost.org/libs/interprocess for documentation. |
| // |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| #ifndef BOOST_INTERPROCESS_SYNC_NAMED_CREATION_FUNCTOR_HPP |
| #define BOOST_INTERPROCESS_SYNC_NAMED_CREATION_FUNCTOR_HPP |
| |
| #include <boost/interprocess/creation_tags.hpp> |
| #include <boost/interprocess/detail/type_traits.hpp> |
| #include <boost/interprocess/detail/mpl.hpp> |
| |
| namespace boost { |
| namespace interprocess { |
| namespace detail { |
| |
| struct named_creation_functor_no_arg{}; |
| |
| template <class T, class Arg = named_creation_functor_no_arg> |
| class named_creation_functor |
| { |
| typedef named_creation_functor_no_arg no_arg_t; |
| public: |
| named_creation_functor(detail::create_enum_t type, Arg arg = Arg()) |
| : m_creation_type(type), m_arg(arg){} |
| |
| template<class ArgType> |
| void construct(void *address, typename enable_if_c<is_same<ArgType, no_arg_t>::value>::type * = 0) const |
| { new(address)T; } |
| |
| template<class ArgType> |
| void construct(void *address, typename enable_if_c<!is_same<ArgType, no_arg_t>::value>::type * = 0) const |
| { new(address)T(m_arg); } |
| |
| bool operator()(void *address, std::size_t, bool created) const |
| { |
| switch(m_creation_type){ |
| case detail::DoOpen: |
| return true; |
| break; |
| case detail::DoCreate: |
| case detail::DoOpenOrCreate: |
| if(created){ |
| construct<Arg>(address); |
| } |
| return true; |
| break; |
| |
| default: |
| return false; |
| break; |
| } |
| } |
| private: |
| detail::create_enum_t m_creation_type; |
| Arg m_arg; |
| }; |
| |
| } //namespace detail { |
| } //namespace interprocess { |
| } //namespace boost { |
| |
| #endif //BOOST_INTERPROCESS_SYNC_NAMED_CREATION_FUNCTOR_HPP |