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/*
* This file is Copyright (c) 2015 by the GPSD project
* BSD terms apply: see the file COPYING in the distribution root for details.
*/
#ifndef PPSTHREAD_H
#define PPSTHREAD_H
#include <stdbool.h>
#include <time.h>
#include <sys/time.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#ifndef HAVE_TIMEDELTA
struct timedelta_t {
struct timespec real;
struct timespec clock;
};
#define HAVE_TIMEDELTA
#endif /* HAVE_TIMEDELTA */
struct pps_state_t {
volatile struct timedelta_t ppslast;
volatile int ppscount;
};
struct pps_fixtime_t {
timestamp_t real;
/* clock must be a timespec as it is in nSec and
* a timestamp_t will lose precision */
struct timespec clock; /* system clock time when last fix received */
};
#define PPS_THREAD_OK 0
#define PPS_LOCK_ERR -1
#define PPS_UNLOCK_ERR -2
extern int pps_thread_stash_fixtime(volatile struct pps_fixtime_t *,
timestamp_t, struct timespec);
extern int pps_thread_lastpps(struct pps_state_t *, struct timedelta_t *);
#endif /* PPSTHREAD_H */
/* end */
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