1 | #ifndef BOOST_THREAD_PTHREAD_TIMESPEC_HPP |
---|---|
2 | #define BOOST_THREAD_PTHREAD_TIMESPEC_HPP |
3 | // (C) Copyright 2007-8 Anthony Williams |
4 | // (C) Copyright 2012 Vicente J. Botet Escriba |
5 | // |
6 | // Distributed under the Boost Software License, Version 1.0. (See |
7 | // accompanying file LICENSE_1_0.txt or copy at |
8 | // http://www.boost.org/LICENSE_1_0.txt) |
9 | |
10 | #include <boost/thread/detail/config.hpp> |
11 | #include <boost/thread/thread_time.hpp> |
12 | #if defined BOOST_THREAD_USES_DATETIME |
13 | #include <boost/date_time/posix_time/conversion.hpp> |
14 | #endif |
15 | #include <pthread.h> |
16 | #ifndef _WIN32 |
17 | #include <unistd.h> |
18 | #endif |
19 | #ifdef BOOST_THREAD_USES_CHRONO |
20 | #include <boost/chrono/duration.hpp> |
21 | #endif |
22 | |
23 | #if defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__) |
24 | # define BOOST_THREAD_TIMESPEC_MAC_API |
25 | #include <sys/time.h> //for gettimeofday and timeval |
26 | #else |
27 | #include <time.h> // for clock_gettime |
28 | #endif |
29 | |
30 | #include <boost/config/abi_prefix.hpp> |
31 | |
32 | namespace boost |
33 | { |
34 | namespace detail |
35 | { |
36 | #if defined BOOST_THREAD_USES_DATETIME |
37 | inline struct timespec to_timespec(boost::system_time const& abs_time) |
38 | { |
39 | struct timespec timeout = { 0,0}; |
40 | boost::posix_time::time_duration const time_since_epoch=abs_time-boost::posix_time::from_time_t(0); |
41 | |
42 | timeout.tv_sec=time_since_epoch.total_seconds(); |
43 | timeout.tv_nsec=(long)(time_since_epoch.fractional_seconds()*(1000000000l/time_since_epoch.ticks_per_second())); |
44 | return timeout; |
45 | } |
46 | #endif |
47 | #if defined BOOST_THREAD_USES_CHRONO |
48 | inline timespec to_timespec(chrono::nanoseconds const& ns) |
49 | { |
50 | struct timespec ts; |
51 | ts.tv_sec = static_cast<long>(chrono::duration_cast<chrono::seconds>(ns).count()); |
52 | ts.tv_nsec = static_cast<long>((ns - chrono::duration_cast<chrono::seconds>(ns)).count()); |
53 | return ts; |
54 | } |
55 | |
56 | #endif |
57 | |
58 | inline timespec to_timespec(boost::intmax_t const& ns) |
59 | { |
60 | boost::intmax_t s = ns / 1000000000l; |
61 | struct timespec ts; |
62 | ts.tv_sec = static_cast<long> (s); |
63 | ts.tv_nsec = static_cast<long> (ns - s * 1000000000l); |
64 | return ts; |
65 | } |
66 | inline boost::intmax_t to_nanoseconds_int_max(timespec const& ts) |
67 | { |
68 | return static_cast<boost::intmax_t>(ts.tv_sec) * 1000000000l + ts.tv_nsec; |
69 | } |
70 | inline bool timespec_ge_zero(timespec const& ts) |
71 | { |
72 | return (ts.tv_sec >= 0) || (ts.tv_nsec >= 0); |
73 | } |
74 | inline timespec timespec_now() |
75 | { |
76 | timespec ts; |
77 | |
78 | #if defined(BOOST_THREAD_TIMESPEC_MAC_API) |
79 | timeval tv; |
80 | ::gettimeofday(&tv, 0); |
81 | ts.tv_sec = tv.tv_sec; |
82 | ts.tv_nsec = tv.tv_usec * 1000; |
83 | #else |
84 | if ( ::clock_gettime( CLOCK_REALTIME, &ts ) ) |
85 | { |
86 | BOOST_ASSERT(0 && "Boost::Thread - Internal Error"); |
87 | } |
88 | #endif |
89 | return ts; |
90 | } |
91 | inline timespec timespec_zero() |
92 | { |
93 | timespec ts; |
94 | ts.tv_sec = 0; |
95 | ts.tv_nsec = 0; |
96 | return ts; |
97 | } |
98 | inline timespec timespec_plus(timespec const& lhs, timespec const& rhs) |
99 | { |
100 | return to_timespec(to_nanoseconds_int_max(lhs) + to_nanoseconds_int_max(rhs)); |
101 | } |
102 | inline timespec timespec_minus(timespec const& lhs, timespec const& rhs) |
103 | { |
104 | return to_timespec(to_nanoseconds_int_max(lhs) - to_nanoseconds_int_max(rhs)); |
105 | } |
106 | inline bool timespec_gt(timespec const& lhs, timespec const& rhs) |
107 | { |
108 | return to_nanoseconds_int_max(lhs) > to_nanoseconds_int_max(rhs); |
109 | } |
110 | inline bool timespec_ge(timespec const& lhs, timespec const& rhs) |
111 | { |
112 | return to_nanoseconds_int_max(lhs) >= to_nanoseconds_int_max(rhs); |
113 | } |
114 | |
115 | } |
116 | } |
117 | |
118 | #include <boost/config/abi_suffix.hpp> |
119 | |
120 | #endif |
121 |