itimerspec
timer_gettime(timer_t timerid, struct itimerspec *value)
int timer_gettime(timer_t, struct itimerspec *);
timer_settime(timer_t timerid, int flags, const struct itimerspec *value,
struct itimerspec *ovalue)
int timer_settime(timer_t, int, const struct itimerspec *,
struct itimerspec *);
struct itimerspec its, oldits;
struct itimerspec *itimer;
struct itimerspec *tp = &pr->ps_timer[ITIMER_REAL];
itimerdecr(struct itimerspec *itp, const struct timespec *decrement)
struct itimerspec ps_timer[3]; /* [m] ITIMER_REAL timer */