#ifndef _POLL_H
#define _POLL_H
struct pollfd {
int fd;
short events;
short revents;
};
#define POLLIN 0x001
#define POLLPRI 0x002
#define POLLOUT 0x004
#define POLLERR 0x008
#define POLLHUP 0x010
#define POLLNVAL 0x020
typedef unsigned long nfds_t;
int poll(struct pollfd *__fds, nfds_t __nfds, int __timeout);
#endif // _POLL_H