1 //
2 // steady_timer.hpp
3 // ~~~~~~~~~~~~~~~~
4 //
5 // Copyright (c) 2003-2021 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_STEADY_TIMER_HPP
12 #define BOOST_ASIO_STEADY_TIMER_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 
20 #if defined(BOOST_ASIO_HAS_CHRONO) || defined(GENERATING_DOCUMENTATION)
21 
22 #include <boost/asio/basic_waitable_timer.hpp>
23 #include <boost/asio/detail/chrono.hpp>
24 
25 namespace boost {
26 namespace asio {
27 
28 /// Typedef for a timer based on the steady clock.
29 /**
30  * This typedef uses the C++11 @c &lt;chrono&gt; standard library facility, if
31  * available. Otherwise, it may use the Boost.Chrono library. To explicitly
32  * utilise Boost.Chrono, use the basic_waitable_timer template directly:
33  * @code
34  * typedef basic_waitable_timer<boost::chrono::steady_clock> timer;
35  * @endcode
36  */
37 typedef basic_waitable_timer<chrono::steady_clock> steady_timer;
38 
39 } // namespace asio
40 } // namespace boost
41 
42 #endif // defined(BOOST_ASIO_HAS_CHRONO) || defined(GENERATING_DOCUMENTATION)
43 
44 #endif // BOOST_ASIO_STEADY_TIMER_HPP
45