How does epoll handle timer file descriptors (e.g., from timerfd_create)? What events are generated by a timer file descriptor when its timer expires?

Jul 25, 2020 ... I/O multiplexing is the the ability to perform I/O operations on multiple file descriptors. Input operations like read, accept and calls for receiving messages ... epoll is specific to Linux, as far as I can tell (http://en.wikipedia.org/wiki/Epoll), so you won't find it in Java other than under the hood, as EJP mentioned, ... Feb 6, 2018 ... The solution is to use a kernel mechanism for polling over a set of file descriptors. There are 3 options you can use in Linux. lib.rs : A rusty wrapper for Linux's epoll interface that is easy to use and hard to misuse. Create a new epoll instance with Epoll::new . Add any struct that ... Feb 26, 2017 ... So, sure, epoll() does not help for optimal distribution of accept() or read() of the same fds over multiple threads. But even with a single ... EPOLLEXCLUSIVE. Wake only one epoll object when the associated fd has an event. The default (if this flag is not set) is to wake all epoll objects polling on a ... Jul 24, 2019 ... I will give a try on explaining the event loop/epoll(), and stop at a point where interviewers will be sufficiently satisfied. Jan 3, 2010 ... poll is much simpler for easy cases; it is probably just as efficient for small numbers of file descriptors. Jul 14, 2020 ... ... epoll.AbstractEpollChannel$AbstractEpollUnsafe$2.run(AbstractEpollChannel.java:575) ~[netty-transport-native-epoll-4.1.49.Final-linux-x86_64 ... struct epoll_event { uint32_t events; /* Epoll events */ epoll_data_t data;. /* User data variable */. }; A union is a data structure that can hold a single ...