masters-thesis/listings/rdtscp_wait.c

uint64_t task_wait(struct task *t)
{
  int ret;
  uint64_t steps, now;

  do {
    now = rdtscp();
  } while (now < t->next);

  for (steps = 0; t->next < now; steps++)
    t->next += t->period;

  return steps;
}