1 // 2 // detail/null_fenced_block.hpp 3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4 // 5 // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com) 6 // 7 // Distributed under the Boost Software License, Version 1.0. (See accompanying 8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 9 // 10 11 #ifndef BOOST_ASIO_DETAIL_NULL_FENCED_BLOCK_HPP 12 #define BOOST_ASIO_DETAIL_NULL_FENCED_BLOCK_HPP 13 14 #if defined(_MSC_VER) && (_MSC_VER >= 1200) 15 # pragma once 16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) 17 18 #include <boost/asio/detail/push_options.hpp> 19 20 namespace boost { 21 namespace asio { 22 namespace detail { 23 24 class null_fenced_block 25 : private noncopyable 26 { 27 public: 28 enum half_or_full_t { half, full }; 29 30 // Constructor. null_fenced_block(half_or_full_t)31 explicit null_fenced_block(half_or_full_t) 32 { 33 } 34 35 // Destructor. ~null_fenced_block()36 ~null_fenced_block() 37 { 38 } 39 }; 40 41 } // namespace detail 42 } // namespace asio 43 } // namespace boost 44 45 #include <boost/asio/detail/pop_options.hpp> 46 47 #endif // BOOST_ASIO_DETAIL_NULL_FENCED_BLOCK_HPP 48