iochan_man_t iochan_man_create(int no_threads, int max_sockets);
-int iochan_add(iochan_man_t man, IOCHAN chan);
+int iochan_add(iochan_man_t man, IOCHAN chan, int slack);
void iochan_man_events(iochan_man_t man);
void iochan_man_destroy(iochan_man_t *mp);
void iochan_destroy(IOCHAN chan);