#ifndef _POLL_H
#define _POLL_H
#define POLLIN   0x0001
#define POLLPRI  0x0002
#define POLLOUT  0x0004
#define POLLERR  0x0008
#define POLLHUP  0x0010
#define POLLNVAL 0x0020
struct pollfd { int fd; short events; short revents; };
typedef unsigned int nfds_t;
int poll(struct pollfd* fds, nfds_t nfds, int timeout);
#endif