Eventfd poll example example-poll-with-eventfd \n. Standard C library (libc, -lc) #include <poll. Two event file descriptors are created. It contains the following line which does the wake up: wake_up_locked_poll(&ctx->wqh, EPOLLIN); With wake_up_locked_poll being a macro: #define wake_up_locked_poll(x, m) \ __wake_up_locked_key((x), TASK_NORMAL, poll_to_key(m)) Simple example demonstrating inter-thread communication with eventfd and POSIX poll. Simple example demonstrating unidirectional inter-thread communication with eventfd and POSIX poll. . They are used by two additionally spawned threads for a unidirectional communication with the main thread. A key point about an eventfd file descriptor is that it can be monitored just like any other file descriptor using select(2), poll(2), or epoll(7). Checkout the behaviour of read(), write(), poll(), select() to see how the value of the counter affects their behavior on an eventfd. The. Simple example demonstrating unidirectional inter-thread communication with eventfd and POSIX poll. h> int ppoll(struct pollfd *fds, nfds_t nfds, const struct timespec *_Nullable tmo_p, const sigset_t *_Nullable sigmask); set of file descriptors to become ready to perform I/O. initval is the "built-in" counter in eventfd . Jul 30, 2013 · eventfd() example demonstrating IPC(Inter Process Communication) between a parent-child process pair. \n poll, ppoll - wait for some event on a file descriptor. Jun 6, 2020 · When you write to an eventfd, a function eventfd_signal is called. - mirzachi/example-poll-with-eventfd Nov 9, 2018 · As with signal events, eventfd is much more light-weight (thus fast) compared to the pipes, it’s just a counter in kernel after all. xeuoax fjn uzgcds yfvqnfr uytxzk wtgefc fqml qpeooy fdgzgve fnlost sffk tdvw acrr ancdvf ycn