1 | #ifndef BOOST_THREAD_TIME_HPP |
---|---|
2 | #define BOOST_THREAD_TIME_HPP |
3 | // (C) Copyright 2007 Anthony Williams |
4 | // |
5 | // Distributed under the Boost Software License, Version 1.0. (See |
6 | // accompanying file LICENSE_1_0.txt or copy at |
7 | // http://www.boost.org/LICENSE_1_0.txt) |
8 | |
9 | #include <boost/date_time/time_clock.hpp> |
10 | #include <boost/date_time/microsec_time_clock.hpp> |
11 | #include <boost/date_time/posix_time/posix_time_types.hpp> |
12 | |
13 | #include <boost/config/abi_prefix.hpp> |
14 | |
15 | namespace boost |
16 | { |
17 | typedef boost::posix_time::ptime system_time; |
18 | |
19 | inline system_time get_system_time() |
20 | { |
21 | #if defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK) |
22 | return boost::date_time::microsec_clock<system_time>::universal_time(); |
23 | #else // defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK) |
24 | return boost::date_time::second_clock<system_time>::universal_time(); |
25 | #endif // defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK) |
26 | } |
27 | |
28 | namespace detail |
29 | { |
30 | inline system_time get_system_time_sentinel() |
31 | { |
32 | return system_time(boost::posix_time::pos_infin); |
33 | } |
34 | |
35 | inline unsigned long get_milliseconds_until(system_time const& target_time) |
36 | { |
37 | if(target_time.is_pos_infinity()) |
38 | { |
39 | return ~(unsigned long)0; |
40 | } |
41 | system_time const now=get_system_time(); |
42 | if(target_time<=now) |
43 | { |
44 | return 0; |
45 | } |
46 | return static_cast<unsigned long>((target_time-now).total_milliseconds()+1); |
47 | } |
48 | |
49 | } |
50 | |
51 | } |
52 | |
53 | #include <boost/config/abi_suffix.hpp> |
54 | |
55 | #endif |
56 |