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extern crate ringbuf;
use std::io::Read;
use std::thread;
use std::time::Duration;
use ringbuf::RingBuffer;
fn main() {
let buf = RingBuffer::<u8>::new(10);
let (mut prod, mut cons) = buf.split();
let smsg = "The quick brown fox jumps over the lazy dog";
let pjh = thread::spawn(move || {
println!("-> sending message: '{}'", smsg);
let zero = [0];
let mut bytes = smsg.as_bytes().chain(&zero[..]);
loop {
if prod.is_full() {
println!("-> buffer is full, waiting");
thread::sleep(Duration::from_millis(1));
} else {
let n = prod.read_from(&mut bytes, None).unwrap();
if n == 0 {
break;
}
println!("-> {} bytes sent", n);
}
}
println!("-> message sent");
});
let cjh = thread::spawn(move || {
println!("<- receiving message");
let mut bytes = Vec::<u8>::new();
loop {
if cons.is_empty() {
if bytes.ends_with(&[0]) {
break;
} else {
println!("<- buffer is empty, waiting");
thread::sleep(Duration::from_millis(1));
}
} else {
let n = cons.write_into(&mut bytes, None).unwrap();
println!("<- {} bytes received", n);
}
}
assert_eq!(bytes.pop().unwrap(), 0);
let msg = String::from_utf8(bytes).unwrap();
println!("<- message received: '{}'", msg);
msg
});
pjh.join().unwrap();
let rmsg = cjh.join().unwrap();
assert_eq!(smsg, rmsg);
}