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