8 #define POLLPRI 0x0002 /* not used */
10 #define POLLERR 0x0008
11 #define POLLHUP 0x0010 /* not used */
12 #define POLLNVAL 0x0020 /* not used */
16 int events; /* in param: what to poll for */
17 int revents; /* out param: what events occured */
20 extern int poll (struct pollfd *p, int num, int timeout);