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/*
* Simulate ANSI/POSIX conformance on platforms that don't have it
*
* This file is Copyright (c) 2010 by the GPSD project
* BSD terms apply: see the file COPYING in the distribution root for details.
*/
#include <time.h>
#include <sys/time.h>
#include "compiler.h"
#ifdef __MACH__
#include <mach/clock.h>
#include <mach/mach.h>
#endif
#ifndef HAVE_CLOCK_GETTIME
int clock_gettime(clockid_t clk_id UNUSED, struct timespec *tp)
{
#ifdef __MACH__ // OS X does not have clock_gettime, use clock_get_time
clock_serv_t cclock;
mach_timespec_t mts;
host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
clock_get_time(cclock, &mts);
mach_port_deallocate(mach_task_self(), cclock);
tp->tv_sec = mts.tv_sec;
tp->tv_nsec = mts.tv_nsec;
#else
struct timeval tv;
if (gettimeofday(&tv, NULL) < 0)
return -1;
tp->ts_sec = tv.tv_sec;
tp->ts_nsec = tv.tv_usec * 1000;
/* paranoid programming */
if (1000000 <= (tv)->tv_usec) {
(tv)->tv_usec -= 1000000;
(tv)->tv_sec++;
} else if (0 > (tv)->tv_usec) {
(tv)->tv_usec += 1000000;
(tv)->tv_sec--;
}
#endif /* __MACH__ */
return 0;
}
#endif /* HAVE_CLOCK_GETTIME */
/* end */
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