at_db
atrun(at_db *db, double batch_maxload, time_t now)
scan_atjobs(at_db **db, struct timespec *ts)
at_db *new_db, *old_db = *db;
static at_db *at_database;
atrun(at_db *, double, time_t);
scan_atjobs(at_db **, struct timespec *);