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//@revisions: stack tree
//@[tree]compile-flags: -Zmiri-tree-borrows
//@compile-flags: -Zmiri-strict-provenance
use std::sync::mpsc::{channel, sync_channel};
use std::thread;
// Check if channels are working.
/// The test taken from the Rust documentation.
fn simple_send() {
let (tx, rx) = channel();
let t = thread::spawn(move || {
tx.send(10).unwrap();
});
assert_eq!(rx.recv().unwrap(), 10);
t.join().unwrap();
}
/// The test taken from the Rust documentation.
fn multiple_send() {
let (tx, rx) = channel();
let mut threads = vec![];
for i in 0..10 {
let tx = tx.clone();
let t = thread::spawn(move || {
tx.send(i).unwrap();
});
threads.push(t);
}
let mut sum = 0;
for _ in 0..10 {
let j = rx.recv().unwrap();
assert!(0 <= j && j < 10);
sum += j;
}
assert_eq!(sum, 45);
for t in threads {
t.join().unwrap();
}
}
/// The test taken from the Rust documentation.
fn send_on_sync() {
let (sender, receiver) = sync_channel(1);
// this returns immediately
sender.send(1).unwrap();
let t = thread::spawn(move || {
// this will block until the previous message has been received
sender.send(2).unwrap();
});
assert_eq!(receiver.recv().unwrap(), 1);
assert_eq!(receiver.recv().unwrap(), 2);
t.join().unwrap();
}
fn main() {
simple_send();
multiple_send();
send_on_sync();
}
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