void sched_request_timeout_ms(long unsigned ms, struct sched *s);
void sched_request_barrier(struct timeval *barrier, struct sched *s);
void sched_request_barrier_or_min_delay(struct timeval *barrier, struct sched *s);
void sched_request_timeout_ms(long unsigned ms, struct sched *s);
void sched_request_barrier(struct timeval *barrier, struct sched *s);
void sched_request_barrier_or_min_delay(struct timeval *barrier, struct sched *s);