6 #define POLLNVAL 0x0020
7 #define POLLRDNORM 0x0040
8 #define POLLRDBAND 0x0080
9 #define POLLWRBAND 0x0200
10 #define POLLMSG 0x0400
11 #define POLLREMOVE 0x1000
19 typedef unsigned int nfds_t
;
21 extern int poll(struct pollfd
*ufds
, nfds_t nfds
, int timeout
);