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- //
- // is_write_buffered.hpp
- // ~~~~~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
- //
- // 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)
- //
-
- #ifndef ASIO_IS_WRITE_BUFFERED_HPP
- #define ASIO_IS_WRITE_BUFFERED_HPP
-
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
- #include "asio/detail/config.hpp"
- #include "asio/buffered_stream_fwd.hpp"
- #include "asio/buffered_write_stream_fwd.hpp"
-
- #include "asio/detail/push_options.hpp"
-
- namespace asio {
-
- namespace detail {
-
- template <typename Stream>
- char is_write_buffered_helper(buffered_stream<Stream>* s);
-
- template <typename Stream>
- char is_write_buffered_helper(buffered_write_stream<Stream>* s);
-
- struct is_write_buffered_big_type { char data[10]; };
- is_write_buffered_big_type is_write_buffered_helper(...);
-
- } // namespace detail
-
- /// The is_write_buffered class is a traits class that may be used to determine
- /// whether a stream type supports buffering of written data.
- template <typename Stream>
- class is_write_buffered
- {
- public:
- #if defined(GENERATING_DOCUMENTATION)
- /// The value member is true only if the Stream type supports buffering of
- /// written data.
- static const bool value;
- #else
- ASIO_STATIC_CONSTANT(bool,
- value = sizeof(detail::is_write_buffered_helper((Stream*)0)) == 1);
- #endif
- };
-
- } // namespace asio
-
- #include "asio/detail/pop_options.hpp"
-
- #endif // ASIO_IS_WRITE_BUFFERED_HPP
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