will contain the specific error code )
epoll_ctl
fn
int epoll_ctl(int epfd, int op, int fd, epoll_event * event)Manipulate an epoll instance
Parameters
epfd | an epoll file descriptor instance |
op | one of the EPOLL_CTL_* constants |
fd | target file descriptor of the operation |
event | describes which events the caller is interested in and any associated user dat |
Returns
0 in case of success, -1 in case of error ( the "errno" variable