cv_status condition_variable::wait_until(unique_lock<mutex>& lock,
const time_point& timeout_time) {
xtimer_t timer;
// todo: use function to wait for absolute timepoint once available
timex_t before;
xtimer_now_timex(&before);
auto diff = timex_sub(timeout_time.native_handle(), before);
xtimer_set_wakeup(&timer, timex_uint64(diff), sched_active_pid);
wait(lock);
timex_t after;
xtimer_now_timex(&after);
xtimer_remove(&timer);
auto cmp = timex_cmp(after, timeout_time.native_handle());
return cmp < 1 ? cv_status::no_timeout : cv_status::timeout;
}
static int _klog(FILE *f, unsigned level, const char *logger,
const char *format, va_list args)
{
timex_t time;
int written = 0;
xtimer_now_timex(&time);
written += fprintf(f, "%010d.%03d %s:%s ", time.seconds,
time.microseconds / 1000, logger, _level_str(level));
written += vfprintf(f, format, args);
written += fprintf(f, "\n");
return written;
}
