log/utility/use_std_allocator.hpp

0001 /*
0002  *              Copyright Andrey Semashev 2021.
0003  * Distributed under the Boost Software License, Version 1.0.
0004  *    (See accompanying file LICENSE_1_0.txt or copy at
0005  *          http://www.boost.org/LICENSE_1_0.txt)
0006  */
0007 /*!
0008  * \file   use_std_allocator.hpp
0009  * \author Andrey Semashev
0010  * \date   04.03.2021
0011  *
0012  * The header defines \c use_std_allocator tag type.
0013  */
0014
0015 #ifndef BOOST_LOG_UTILITY_USE_STD_ALLOCATOR_HPP_INCLUDED_
0016 #define BOOST_LOG_UTILITY_USE_STD_ALLOCATOR_HPP_INCLUDED_
0017
0018 #include <boost/log/detail/config.hpp>
0019 #include <boost/log/detail/header.hpp>
0020
0021 #ifdef BOOST_HAS_PRAGMA_ONCE
0022 #pragma once
0023 #endif
0024
0025 namespace boost {
0026
0027 BOOST_LOG_OPEN_NAMESPACE
0028
0029 #ifndef BOOST_LOG_DOXYGEN_PASS
0030
0031 namespace aux {
0032
0033 namespace usestdalloc_adl_block {
0034
0035 struct use_std_allocator {};
0036
0037 } // namespace usestdalloc_adl_block
0038
0039 } // namespace aux
0040
0041 using aux::usestdalloc_adl_block::use_std_allocator;
0042
0043 #else // BOOST_LOG_DOXYGEN_PASS
0044
0045 /*!
0046  * \brief Tag type that indicates that a specialization of \c std::allocator should be used for allocating memory
0047  *
0048  * This tag type can be used in template parameters in various components of Boost.Log. The type itself is not an allocator type.
0049  */
0050 struct use_std_allocator {};
0051
0052 #endif // BOOST_LOG_DOXYGEN_PASS
0053
0054 BOOST_LOG_CLOSE_NAMESPACE // namespace log
0055
0056 } // namespace boost
0057
0058 #include <boost/log/detail/footer.hpp>
0059
0060 #endif // BOOST_LOG_UTILITY_USE_STD_ALLOCATOR_HPP_INCLUDED_