clock_zeros
rc = clock_zeros(master, FSI_MASTER_EPOLL_CLOCKS);
rc = clock_zeros(master, FSI_MASTER_DPOLL_CLOCKS);
clock_zeros(master, master->t_echo_delay);
clock_zeros(master, FSI_MASTER_EPOLL_CLOCKS);
clock_zeros(master, FSI_MASTER_DPOLL_CLOCKS);
clock_zeros(master, FSI_MASTER_DPOLL_CLOCKS);
clock_zeros(master, master->t_send_delay);
clock_zeros(master, FSI_INIT_CLOCKS);