133 lines
3.1 KiB
C
133 lines
3.1 KiB
C
/*-
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* Copyright (c) 2014-2015 François Tigeot
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LINUX_TIME_H_
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#define _LINUX_TIME_H_
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#define NSEC_PER_USEC 1000L
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#define NSEC_PER_MSEC 1000000L
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#define NSEC_PER_SEC 1000000000L
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#include <sys/time.h>
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#include <sys/stdint.h>
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static inline struct timeval
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ns_to_timeval(const int64_t nsec)
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{
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struct timeval tv;
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long rem;
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if (nsec == 0) {
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tv.tv_sec = 0;
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tv.tv_usec = 0;
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return (tv);
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}
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tv.tv_sec = nsec / NSEC_PER_SEC;
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rem = nsec % NSEC_PER_SEC;
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if (rem < 0) {
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tv.tv_sec--;
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rem += NSEC_PER_SEC;
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}
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tv.tv_usec = rem / 1000;
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return (tv);
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}
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static inline int64_t
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timeval_to_ns(const struct timeval *tv)
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{
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return ((int64_t)tv->tv_sec * NSEC_PER_SEC) +
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tv->tv_usec * NSEC_PER_USEC;
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}
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#define getrawmonotonic(ts) nanouptime(ts)
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static inline struct timespec
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timespec_sub(struct timespec lhs, struct timespec rhs)
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{
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struct timespec ts;
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ts.tv_sec = lhs.tv_sec;
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ts.tv_nsec = lhs.tv_nsec;
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timespecsub(&ts, &rhs);
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return ts;
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}
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static inline void
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set_normalized_timespec(struct timespec *ts, time_t sec, int64_t nsec)
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{
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/* XXX: this doesn't actually normalize anything */
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ts->tv_sec = sec;
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ts->tv_nsec = nsec;
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}
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static inline int64_t
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timespec_to_ns(const struct timespec *ts)
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{
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return ((ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec);
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}
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static inline struct timespec
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ns_to_timespec(const int64_t nsec)
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{
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struct timespec ts;
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int32_t rem;
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if (nsec == 0) {
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ts.tv_sec = 0;
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ts.tv_nsec = 0;
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return (ts);
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}
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ts.tv_sec = nsec / NSEC_PER_SEC;
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rem = nsec % NSEC_PER_SEC;
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if (rem < 0) {
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ts.tv_sec--;
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rem += NSEC_PER_SEC;
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}
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ts.tv_nsec = rem;
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return (ts);
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}
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static inline int
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timespec_valid(const struct timespec *ts)
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{
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if (ts->tv_sec < 0 || ts->tv_sec > 100000000 ||
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ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000)
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return (0);
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return (1);
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}
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static inline unsigned long
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get_seconds(void)
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{
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return time_uptime;
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}
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#endif /* _LINUX_TIME_H_ */
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