NAME | LIBRARY | SYNOPSIS | DESCRIPTION | VERSIONS | STANDARDS | SEE ALSO | COLOPHON |
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epoll_event(3type) epoll_event(3type)
epoll_event, epoll_data, epoll_data_t - epoll event
Standard C library (libc)
#include <sys/epoll.h> struct epoll_event { uint32_t events; /* Epoll events */ epoll_data_t data; /* User data variable */ }; union epoll_data { void *ptr; int fd; uint32_t u32; uint64_t u64; }; typedef union epoll_data epoll_data_t;
The epoll_event structure specifies data that the kernel should save and return when the corresponding file descriptor becomes ready.
C library/kernel differences The Linux kernel headers also provide this type, with a slightly different definition: #include <linux/eventpoll.h> struct epoll_event { __poll_t events; __u64 data; };
Linux.
epoll_wait(2), epoll_ctl(2)
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Linux man-pages 6.9.1 2024-05-02 epoll_event(3type)
Pages that refer to this page: epoll_ctl(2), epoll_wait(2)