void sched_request_timeout_ms(long unsigned ms, struct sched *s);
int sched_request_barrier(struct timeval *barrier, struct sched *s);
int sched_request_barrier_or_min_delay(struct timeval *barrier, struct sched *s);
+void sched_monitor_readfd(int fd, struct sched *s);
+void sched_monitor_writefd(int fd, struct sched *s);
static inline bool sched_read_ok(int fd, const struct sched *s)
{