#ifndef QUEUE_H#define QUEUE_H #include <stddef.h> #ifdef __linux__	#include <sys/epoll.h> 	typedef struct epoll_event queue_event;#else	#include <sys/types.h>	#include <sys/event.h>	#include <sys/time.h> 	typedef struct kevent queue_event;#endif enum queue_event_type {	QUEUE_EVENT_IN,	QUEUE_EVENT_OUT,}; int queue_create(void);int queue_add_fd(int, int, enum queue_event_type, int, const void *);int queue_mod_fd(int, int, enum queue_event_type, const void *);int queue_rem_fd(int, int);ssize_t queue_wait(int, queue_event *, size_t); void *queue_event_get_data(const queue_event *); int queue_event_is_error(const queue_event *e); #endif /* QUEUE_H */