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//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2007-2012. 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
#ifndef BOOST_CONFIG_HPP
# include <boost/config.hpp>
#endif
#
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
#include <boost/interprocess/creation_tags.hpp>
#include <boost/interprocess/detail/type_traits.hpp>
#include <boost/interprocess/detail/mpl.hpp>
#include <boost/container/detail/placement_new.hpp>
namespace boost {
namespace interprocess {
namespace ipcdetail {
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(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, boost_container_new_t())T; }
template<class ArgType>
void construct(void *address, typename enable_if_c<!is_same<ArgType, no_arg_t>::value>::type * = 0) const
{ ::new(address, boost_container_new_t())T(m_arg); }
bool operator()(void *address, std::size_t, bool created) const
{
switch(m_creation_type){
case DoOpen:
return true;
break;
case DoCreate:
case DoOpenOrCreate:
if(created){
construct<Arg>(address);
}
return true;
break;
default:
return false;
break;
}
}
std::size_t get_min_size() const
{ return sizeof(T); }
private:
create_enum_t m_creation_type;
Arg m_arg;
};
} //namespace ipcdetail {
} //namespace interprocess {
} //namespace boost {
#endif //BOOST_INTERPROCESS_SYNC_NAMED_CREATION_FUNCTOR_HPP
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