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1 | // |
2 | // impl/defer.hpp | |
3 | // ~~~~~~~~~~~~~~ | |
4 | // | |
11fdf7f2 | 5 | // Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
b32b8144 FG |
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_IMPL_DEFER_HPP | |
12 | #define BOOST_ASIO_IMPL_DEFER_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/associated_allocator.hpp> | |
20 | #include <boost/asio/associated_executor.hpp> | |
21 | #include <boost/asio/detail/work_dispatcher.hpp> | |
22 | ||
23 | #include <boost/asio/detail/push_options.hpp> | |
24 | ||
25 | namespace boost { | |
26 | namespace asio { | |
27 | ||
28 | template <typename CompletionToken> | |
29 | BOOST_ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer( | |
30 | BOOST_ASIO_MOVE_ARG(CompletionToken) token) | |
31 | { | |
32 | typedef BOOST_ASIO_HANDLER_TYPE(CompletionToken, void()) handler; | |
33 | ||
34 | async_completion<CompletionToken, void()> init(token); | |
35 | ||
36 | typename associated_executor<handler>::type ex( | |
37 | (get_associated_executor)(init.completion_handler)); | |
38 | ||
39 | typename associated_allocator<handler>::type alloc( | |
40 | (get_associated_allocator)(init.completion_handler)); | |
41 | ||
42 | ex.defer(BOOST_ASIO_MOVE_CAST(handler)(init.completion_handler), alloc); | |
43 | ||
44 | return init.result.get(); | |
45 | } | |
46 | ||
47 | template <typename Executor, typename CompletionToken> | |
48 | BOOST_ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer( | |
49 | const Executor& ex, BOOST_ASIO_MOVE_ARG(CompletionToken) token, | |
50 | typename enable_if<is_executor<Executor>::value>::type*) | |
51 | { | |
52 | typedef BOOST_ASIO_HANDLER_TYPE(CompletionToken, void()) handler; | |
53 | ||
54 | async_completion<CompletionToken, void()> init(token); | |
55 | ||
56 | typename associated_allocator<handler>::type alloc( | |
57 | (get_associated_allocator)(init.completion_handler)); | |
58 | ||
59 | ex.defer(detail::work_dispatcher<handler>(init.completion_handler), alloc); | |
60 | ||
61 | return init.result.get(); | |
62 | } | |
63 | ||
64 | template <typename ExecutionContext, typename CompletionToken> | |
65 | inline BOOST_ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer( | |
66 | ExecutionContext& ctx, BOOST_ASIO_MOVE_ARG(CompletionToken) token, | |
67 | typename enable_if<is_convertible< | |
68 | ExecutionContext&, execution_context&>::value>::type*) | |
69 | { | |
70 | return (defer)(ctx.get_executor(), | |
71 | BOOST_ASIO_MOVE_CAST(CompletionToken)(token)); | |
72 | } | |
73 | ||
74 | } // namespace asio | |
75 | } // namespace boost | |
76 | ||
77 | #include <boost/asio/detail/pop_options.hpp> | |
78 | ||
79 | #endif // BOOST_ASIO_IMPL_DEFER_HPP |