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/* $OpenBSD: time.h,v 1.2 2020/06/08 04:48:15 jsg Exp $ */
/*
* Copyright (c) 2013, 2014, 2015 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _LINUX_TIME_H
#define _LINUX_TIME_H
#include <sys/time.h>
#include <linux/math64.h>
#include <linux/seqlock.h>
#define NSEC_PER_USEC 1000L
#define NSEC_PER_MSEC 1000000L
#define NSEC_PER_SEC 1000000000L
#define USEC_PER_MSEC 1000L
#define USEC_PER_SEC 1000000L
extern struct timespec ns_to_timespec(const int64_t);
extern int64_t timeval_to_ms(const struct timeval *);
extern int64_t timeval_to_ns(const struct timeval *);
extern int64_t timeval_to_us(const struct timeval *);
extern struct timeval ns_to_timeval(const int64_t);
struct timespec64 {
time_t tv_sec;
long tv_nsec;
};
static inline struct timespec
timespec_sub(struct timespec t1, struct timespec t2)
{
struct timespec diff;
timespecsub(&t1, &t2, &diff);
return diff;
}
static inline void
set_normalized_timespec(struct timespec *ts, time_t sec, int64_t nsec)
{
while (nsec > NSEC_PER_SEC) {
nsec -= NSEC_PER_SEC;
sec++;
}
ts->tv_sec = sec;
ts->tv_nsec = nsec;
}
static inline int64_t
timespec_to_ns(const struct timespec *ts)
{
return ((ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec);
}
static inline int
timespec_valid(const struct timespec *ts)
{
if (ts->tv_sec < 0 || ts->tv_sec > 100000000 ||
ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000)
return (0);
return (1);
}
#endif
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