| 1 | /* |
|---|---|
| 2 | * Copyright Andrey Semashev 2016. |
| 3 | * Distributed under the Boost Software License, Version 1.0. |
| 4 | * (See accompanying file LICENSE_1_0.txt or copy at |
| 5 | * http://www.boost.org/LICENSE_1_0.txt) |
| 6 | */ |
| 7 | /*! |
| 8 | * \file open_mode.hpp |
| 9 | * \author Andrey Semashev |
| 10 | * \date 01.01.2016 |
| 11 | * |
| 12 | * The header defines resource opening modes. |
| 13 | */ |
| 14 | |
| 15 | #ifndef BOOST_LOG_UTILITY_OPEN_MODE_HPP_INCLUDED_ |
| 16 | #define BOOST_LOG_UTILITY_OPEN_MODE_HPP_INCLUDED_ |
| 17 | |
| 18 | #include <boost/log/detail/config.hpp> |
| 19 | #include <boost/log/detail/header.hpp> |
| 20 | |
| 21 | #ifdef BOOST_HAS_PRAGMA_ONCE |
| 22 | #pragma once |
| 23 | #endif |
| 24 | |
| 25 | namespace boost { |
| 26 | |
| 27 | BOOST_LOG_OPEN_NAMESPACE |
| 28 | |
| 29 | namespace open_mode { |
| 30 | |
| 31 | //! Create a new resource; fail if exists already |
| 32 | struct create_only_tag {} const create_only = create_only_tag(); |
| 33 | //! Opens an existing resource; fail if not exist |
| 34 | struct open_only_tag {} const open_only = open_only_tag(); |
| 35 | //! Creates a new resource or opens an existing one |
| 36 | struct open_or_create_tag {} const open_or_create = open_or_create_tag(); |
| 37 | |
| 38 | } // namespace open_mode |
| 39 | |
| 40 | BOOST_LOG_CLOSE_NAMESPACE // namespace log |
| 41 | |
| 42 | } // namespace boost |
| 43 | |
| 44 | #include <boost/log/detail/footer.hpp> |
| 45 | |
| 46 | #endif // BOOST_LOG_UTILITY_OPEN_MODE_HPP_INCLUDED_ |
| 47 |