Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Click here to view the latest version of this page.

boost/interprocess/creation_tags.hpp

//////////////////////////////////////////////////////////////////////////////
//
// (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 only opened for reading
struct open_read_only_t {};

//!Tag to indicate that the resource must
//!be only opened for reading
struct open_copy_on_write_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 only opened for reading
static const open_read_only_t open_read_only = open_read_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();

//!Value to indicate that the resource must
//!be only opened for reading
static const open_copy_on_write_t open_copy_on_write = open_copy_on_write_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