]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
1 | // |
2 | // wait_traits.hpp | |
3 | // ~~~~~~~~~~~~~~~ | |
4 | // | |
11fdf7f2 | 5 | // Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
7c673cae 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_WAIT_TRAITS_HPP | |
12 | #define BOOST_ASIO_WAIT_TRAITS_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 | ||
23 | /// Wait traits suitable for use with the basic_waitable_timer class template. | |
24 | template <typename Clock> | |
25 | struct wait_traits | |
26 | { | |
27 | /// Convert a clock duration into a duration used for waiting. | |
b32b8144 | 28 | /** |
7c673cae FG |
29 | * @returns @c d. |
30 | */ | |
31 | static typename Clock::duration to_wait_duration( | |
32 | const typename Clock::duration& d) | |
33 | { | |
34 | return d; | |
35 | } | |
b32b8144 FG |
36 | |
37 | /// Convert a clock duration into a duration used for waiting. | |
38 | /** | |
39 | * @returns @c d. | |
40 | */ | |
41 | static typename Clock::duration to_wait_duration( | |
42 | const typename Clock::time_point& t) | |
43 | { | |
44 | typename Clock::time_point now = Clock::now(); | |
45 | if (now + (Clock::duration::max)() < t) | |
46 | return (Clock::duration::max)(); | |
47 | if (now + (Clock::duration::min)() > t) | |
48 | return (Clock::duration::min)(); | |
49 | return t - now; | |
50 | } | |
7c673cae FG |
51 | }; |
52 | ||
53 | } // namespace asio | |
54 | } // namespace boost | |
55 | ||
56 | #include <boost/asio/detail/pop_options.hpp> | |
57 | ||
58 | #endif // BOOST_ASIO_WAIT_TRAITS_HPP |