rust armanazi thread recv try_recv
To receive messages from a Rust std::sync::mpsc::Receiver
in a non-blocking manner, you can use the recv
and try_recv
methods. The recv
method blocks the current thread until a message becomes available, while the try_recv
method attempts to receive a message without blocking. Here's an example of how you can use these methods:
use std::sync::mpsc;
use std::thread;
fn main() {
let (sender, receiver) = mpsc::channel();
thread::spawn(move || {
sender.send(42).unwrap();
});
// Blocking receive
let received_value = receiver.recv().unwrap();
println!("Received: {}", received_value);
// Non-blocking receive
let maybe_value = receiver.try_recv();
if let Ok(received_value) = maybe_value {
println!("Received: {}", received_value);
} else {
println!("No message available");
}
}
In this example, a new thread is spawned to send a value (42
) through the sender
channel. The main thread then uses the recv
method to block until it receives the value, and the try_recv
method to non-blockingly attempt to receive a value. If a value is received, it is printed; otherwise, a message indicating that no message is available is printed.
Note that in this example, we're using unwrap
to handle potential errors. In a real-world scenario, it's recommended to handle errors properly to ensure robustness in your code.