2 * Copyright (c) 2014-2015 François Tigeot
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #ifndef _LINUX_TIME_H_
29 #define _LINUX_TIME_H_
31 #define NSEC_PER_USEC 1000L
32 #define NSEC_PER_MSEC 1000000L
33 #define NSEC_PER_SEC 1000000000L
35 #define USEC_PER_MSEC 1000L
36 #define USEC_PER_SEC 1000000L
38 #define timespec64 timespec
41 #include <sys/stdint.h>
43 static inline struct timeval
44 ns_to_timeval(const int64_t nsec)
55 tv.tv_sec = nsec / NSEC_PER_SEC;
56 rem = nsec % NSEC_PER_SEC;
61 tv.tv_usec = rem / 1000;
66 timeval_to_ns(const struct timeval *tv)
68 return ((int64_t)tv->tv_sec * NSEC_PER_SEC) +
69 tv->tv_usec * NSEC_PER_USEC;
72 #define getrawmonotonic(ts) nanouptime(ts)
74 static inline struct timespec
75 timespec_sub(struct timespec lhs, struct timespec rhs)
79 timespecsub(&lhs, &rhs, &ts);
85 set_normalized_timespec(struct timespec *ts, time_t sec, int64_t nsec)
87 /* XXX: this doesn't actually normalize anything */
93 timespec_to_ns(const struct timespec *ts)
95 return ((ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec);
98 static inline struct timespec
99 ns_to_timespec(const int64_t nsec)
110 ts.tv_sec = nsec / NSEC_PER_SEC;
111 rem = nsec % NSEC_PER_SEC;
121 timespec_valid(const struct timespec *ts)
123 if (ts->tv_sec < 0 || ts->tv_sec > 100000000 ||
124 ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000)
129 static inline unsigned long
135 #endif /* _LINUX_TIME_H_ */