60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
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#ifndef _EPOLL__H
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#define _EPOLL__H
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#include <poll.h>
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enum EPOLL_EVENTS
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{
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EPOLLIN = POLLIN,
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#define EPOLLIN EPOLLIN
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EPOLLPRI = POLLPRI,
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#define EPOLLPRI EPOLLPRI
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EPOLLOUT = POLLOUT,
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#define EPOLLOUT EPOLLOUT
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EPOLLRDNORM = POLLRDNORM,
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#define EPOLLRDNORM EPOLLRDNORM
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EPOLLRDBAND = POLLRDBAND,
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#define EPOLLRDBAND EPOLLRDBAND
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EPOLLWRNORM = POLLWRNORM,
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#define EPOLLWRNORM EPOLLWRNORM
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EPOLLWRBAND = POLLWRBAND,
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#define EPOLLWRBAND EPOLLWRBAND
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EPOLLERR = POLLERR,
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#define EPOLLERR EPOLLERR
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EPOLLHUP = POLLHUP,
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#define EPOLLHUP EPOLLHUP
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};
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#define EPOLL_CTL_ADD 1 /* Add a file descriptor to the interface. */
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#define EPOLL_CTL_DEL 2 /* Remove a file descriptor from the interface. */
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#define EPOLL_CTL_MOD 3 /* Change file descriptor epoll_event structure. */
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typedef union poll_data
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{
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int fd; /* The descriptor being polled */
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} epoll_data_t;
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struct epoll_event
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{
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epoll_data_t data;
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sem_t *sem; /* Pointer to semaphore used to post output event */
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pollevent_t events; /* The input event flags */
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pollevent_t revents; /* The output event flags */
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FAR void *priv; /* For use by drivers */
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};
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struct epoll_head
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{
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int size;
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int occupied;
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struct epoll_event *evs;
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};
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int epoll_create(int size);
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int epoll_ctl(int epfd, int op, int fd, struct epoll_event *ev);
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int epoll_wait(int epfd, struct epoll_event *evs, int maxevents, int timeout);
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void epoll_close(int epfd);
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#endif
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