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use jobserver::Client;
use std::sync::atomic::*;
use std::sync::mpsc;
use std::sync::*;
macro_rules! t {
($e:expr) => {
match $e {
Ok(e) => e,
Err(e) => panic!("{} failed with {}", stringify!($e), e),
}
};
}
#[test]
fn helper_smoke() {
let client = t!(Client::new(1));
drop(client.clone().into_helper_thread(|_| ()).unwrap());
drop(client.clone().into_helper_thread(|_| ()).unwrap());
drop(client.clone().into_helper_thread(|_| ()).unwrap());
drop(client.clone().into_helper_thread(|_| ()).unwrap());
drop(client.clone().into_helper_thread(|_| ()).unwrap());
drop(client.into_helper_thread(|_| ()).unwrap());
}
#[test]
fn acquire() {
let (tx, rx) = mpsc::channel();
let client = t!(Client::new(1));
let helper = client
.into_helper_thread(move |a| drop(tx.send(a)))
.unwrap();
assert!(rx.try_recv().is_err());
helper.request_token();
rx.recv().unwrap().unwrap();
helper.request_token();
rx.recv().unwrap().unwrap();
helper.request_token();
helper.request_token();
rx.recv().unwrap().unwrap();
rx.recv().unwrap().unwrap();
helper.request_token();
helper.request_token();
drop(helper);
}
#[test]
fn prompt_shutdown() {
for _ in 0..100 {
let client = jobserver::Client::new(4).unwrap();
let count = Arc::new(AtomicU32::new(0));
let count2 = count.clone();
let tokens = Arc::new(Mutex::new(Vec::new()));
let helper = client
.into_helper_thread(move |token| {
tokens.lock().unwrap().push(token);
count2.fetch_add(1, Ordering::SeqCst);
})
.unwrap();
// Request more tokens than what are available.
for _ in 0..5 {
helper.request_token();
}
// Wait for at least some of the requests to finish.
while count.load(Ordering::SeqCst) < 3 {
std::thread::yield_now();
}
// Drop helper
let t = std::time::Instant::now();
drop(helper);
let d = t.elapsed();
assert!(d.as_secs_f64() < 0.5);
}
}