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#ifndef _SYS_POLL_H
#define _SYS_POLL_H
#ifdef __cplusplus
extern "C" {
#endif
#define POLLIN 1
#define POLLOUT 2
#define POLLNVAL 4
#define POLLERR 8
#define POLLHUP 16
#define POLLPRI 32
struct pollfd {
int fd;
short events;
short revents;
};
typedef unsigned int nfds_t;
int poll(struct pollfd *data, nfds_t num, int extra);
#ifdef __cplusplus
}
#endif
#endif
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