Struct mio::Poll
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[src]
pub struct Poll {
// some fields omitted
}The Poll type acts as an interface allowing a program to wait on a set of
IO handles until one or more become "ready" to be operated on. An IO handle
is considered ready to operate on when the given operation can complete
without blocking.
To use Poll, an IO handle must first be registered with the Poll
instance using the register() handle. An EventSet representing the
program's interest in the socket is specified as well as an arbitrary
Token which is used to identify the IO handle in the future.
Edge-triggered and level-triggered
An IO handle registration may request edge-triggered notifications or
level-triggered notifications. This is done by specifying the PollOpt
argument to register() and reregister().
Portability
Cross platform portability is provided for Mio's TCP & UDP implementations.
Examples
use mio::*; use mio::tcp::*; // Construct a new `Poll` handle let mut poll = Poll::new().unwrap(); // Connect the stream let stream = TcpStream::connect(&"173.194.33.80:80".parse().unwrap()).unwrap(); // Register the stream with `Poll` poll.register(&stream, Token(0), EventSet::all(), PollOpt::edge()).unwrap(); // Wait for the socket to become ready poll.poll(None).unwrap();