/*
* Copyright (c) 2014 Todd C. Miller <Todd.Miller@courtesan.com>
*
* 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.
*/
#include <config.h>
#if !defined(HAVE_CLOCK_GETTIME)
#include <sys/types.h>
#include <sys/time.h>
#include <errno.h>
#include <stdio.h>
#ifdef TIME_WITH_SYS_TIME
# include <time.h>
#endif
#ifndef HAVE_STRUCT_TIMESPEC
# include "compat/timespec.h"
#endif
#include "missing.h"
#ifdef __MACH__
# include <mach/mach.h>
# include <mach/mach_time.h>
# include <mach/clock.h>
#endif
/*
* Trivial clock_gettime() that supports CLOCK_REALTIME
* (and CLOCK_MONOTONIC on Mach).
*/
int
clock_gettime(clockid_t clock_id, struct timespec *ts)
{
switch (clock_id) {
#ifdef __MACH__
case CLOCK_MONOTONIC:
{
uint64_t abstime, nsec;
static mach_timebase_info_data_t timebase_info;
if (timebase_info.denom == 0)
(void) mach_timebase_info(&timebase_info);
abstime = mach_absolute_time();
nsec = abstime * timebase_info.numer / timebase_info.denom;
ts->tv_sec = nsec / 1000000000;
ts->tv_nsec = nsec % 1000000000;
return 0;
}
#endif
case CLOCK_REALTIME:
{
struct timeval tv;
gettimeofday(&tv, NULL);
ts->tv_sec = tv.tv_sec;
ts->tv_nsec = tv.tv_usec * 1000;
return 0;
}
default:
errno = EINVAL;
return -1;
}
}
#endif /* !HAVE_CLOCK_GETTIME */
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