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,
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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
36 #include <sys/stdint.h>
38 static inline struct timeval
39 ns_to_timeval(const int64_t nsec)
50 tv.tv_sec = nsec / NSEC_PER_SEC;
51 rem = nsec % NSEC_PER_SEC;
56 tv.tv_usec = rem / 1000;
61 timeval_to_ns(const struct timeval *tv)
63 return ((int64_t)tv->tv_sec * NSEC_PER_SEC) +
64 tv->tv_usec * NSEC_PER_USEC;
67 #define getrawmonotonic(ts) nanouptime(ts)
69 static inline struct timespec
70 timespec_sub(struct timespec lhs, struct timespec rhs)
74 ts.tv_sec = lhs.tv_sec;
75 ts.tv_nsec = lhs.tv_nsec;
76 timespecsub(&ts, &rhs);
82 set_normalized_timespec(struct timespec *ts, time_t sec, int64_t nsec)
84 /* XXX: this doesn't actually normalize anything */
90 timespec_to_ns(const struct timespec *ts)
92 return ((ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec);
95 static inline struct timespec
96 ns_to_timespec(const int64_t nsec)
107 ts.tv_sec = nsec / NSEC_PER_SEC;
108 rem = nsec % NSEC_PER_SEC;
118 timespec_valid(const struct timespec *ts)
120 if (ts->tv_sec < 0 || ts->tv_sec > 100000000 ||
121 ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000)
126 static inline unsigned long
132 #endif /* _LINUX_TIME_H_ */