//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2005-2008. 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_CREATION_TAGS_HPP
#define BOOST_INTERPROCESS_CREATION_TAGS_HPP

#include <boost/interprocess/detail/config_begin.hpp>
#include <boost/interprocess/detail/workaround.hpp>

namespace boost {
namespace interprocess {

//!Tag to indicate that the resource must
//!be only created
struct create_only_t {};

//!Tag to indicate that the resource must
//!be only opened
struct open_only_t {};

//!Tag to indicate that the resource must
//!be created. If already created, it must be opened.
struct open_or_create_t {};

//!Value to indicate that the resource must
//!be only created
static const create_only_t     create_only    = create_only_t();

//!Value to indicate that the resource must
//!be only opened
static const open_only_t       open_only      = open_only_t();

//!Value to indicate that the resource must
//!be created. If already created, it must be opened.
static const open_or_create_t  open_or_create = open_or_create_t();

namespace detail {

enum create_enum_t
{  DoCreate, DoOpen, DoOpenOrCreate   };

}  //namespace detail {

}  //namespace interprocess {
}  //namespace boost {

#include <boost/interprocess/detail/config_end.hpp>

#endif   //#ifndef BOOST_INTERPROCESS_CREATION_TAGS_HPP

