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1 | // |
2 | // detail/handler_cont_helpers.hpp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
5 | // Copyright (c) 2003-2016 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_HANDLER_CONT_HELPERS_HPP | |
12 | #define BOOST_ASIO_DETAIL_HANDLER_CONT_HELPERS_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/config.hpp> | |
19 | #include <boost/asio/detail/addressof.hpp> | |
20 | #include <boost/asio/handler_continuation_hook.hpp> | |
21 | ||
22 | #include <boost/asio/detail/push_options.hpp> | |
23 | ||
24 | // Calls to asio_handler_is_continuation must be made from a namespace that | |
25 | // does not contain overloads of this function. This namespace is defined here | |
26 | // for that purpose. | |
27 | namespace boost_asio_handler_cont_helpers { | |
28 | ||
29 | template <typename Context> | |
30 | inline bool is_continuation(Context& context) | |
31 | { | |
32 | #if !defined(BOOST_ASIO_HAS_HANDLER_HOOKS) | |
33 | return false; | |
34 | #else | |
35 | using boost::asio::asio_handler_is_continuation; | |
36 | return asio_handler_is_continuation( | |
37 | boost::asio::detail::addressof(context)); | |
38 | #endif | |
39 | } | |
40 | ||
41 | } // namespace boost_asio_handler_cont_helpers | |
42 | ||
43 | #include <boost/asio/detail/pop_options.hpp> | |
44 | ||
45 | #endif // BOOST_ASIO_DETAIL_HANDLER_CONT_HELPERS_HPP |