1//
2// detail/handler_cont_helpers.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_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.
27namespace boost_asio_handler_cont_helpers {
28
29template <typename Context>
30inline 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
46