pub fn poll(fds: &mut [PollFd], timeout: Option<Duration>) -> Result<u64>Expand description
Wait for some event on a file descriptor.
The unix-like poll waits for one of a set of file descriptors
to become ready to perform I/O. The set of file descriptors to be
monitored is specified in the fds argument, which is an array
of structs of PollFd.