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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 |