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#![cfg(test)]
use crate::ThreadPoolBuilder;
use std::sync::atomic::{AtomicUsize, Ordering};
use std::sync::Arc;
use std::{thread, time};
#[test]
fn broadcast_global() {
let v = crate::broadcast(|ctx| ctx.index());
assert!(v.into_iter().eq(0..crate::current_num_threads()));
}
#[test]
fn spawn_broadcast_global() {
let (tx, rx) = crossbeam_channel::unbounded();
crate::spawn_broadcast(move |ctx| tx.send(ctx.index()).unwrap());
let mut v: Vec<_> = rx.into_iter().collect();
v.sort_unstable();
assert!(v.into_iter().eq(0..crate::current_num_threads()));
}
#[test]
fn broadcast_pool() {
let pool = ThreadPoolBuilder::new().num_threads(7).build().unwrap();
let v = pool.broadcast(|ctx| ctx.index());
assert!(v.into_iter().eq(0..7));
}
#[test]
fn spawn_broadcast_pool() {
let (tx, rx) = crossbeam_channel::unbounded();
let pool = ThreadPoolBuilder::new().num_threads(7).build().unwrap();
pool.spawn_broadcast(move |ctx| tx.send(ctx.index()).unwrap());
let mut v: Vec<_> = rx.into_iter().collect();
v.sort_unstable();
assert!(v.into_iter().eq(0..7));
}
#[test]
fn broadcast_self() {
let pool = ThreadPoolBuilder::new().num_threads(7).build().unwrap();
let v = pool.install(|| crate::broadcast(|ctx| ctx.index()));
assert!(v.into_iter().eq(0..7));
}
#[test]
fn spawn_broadcast_self() {
let (tx, rx) = crossbeam_channel::unbounded();
let pool = ThreadPoolBuilder::new().num_threads(7).build().unwrap();
pool.spawn(|| crate::spawn_broadcast(move |ctx| tx.send(ctx.index()).unwrap()));
let mut v: Vec<_> = rx.into_iter().collect();
v.sort_unstable();
assert!(v.into_iter().eq(0..7));
}
#[test]
fn broadcast_mutual() {
let count = AtomicUsize::new(0);
let pool1 = ThreadPoolBuilder::new().num_threads(3).build().unwrap();
let pool2 = ThreadPoolBuilder::new().num_threads(7).build().unwrap();
pool1.install(|| {
pool2.broadcast(|_| {
pool1.broadcast(|_| {
count.fetch_add(1, Ordering::Relaxed);
})
})
});
assert_eq!(count.into_inner(), 3 * 7);
}
#[test]
fn spawn_broadcast_mutual() {
let (tx, rx) = crossbeam_channel::unbounded();
let pool1 = Arc::new(ThreadPoolBuilder::new().num_threads(3).build().unwrap());
let pool2 = ThreadPoolBuilder::new().num_threads(7).build().unwrap();
pool1.spawn({
let pool1 = Arc::clone(&pool1);
move || {
pool2.spawn_broadcast(move |_| {
let tx = tx.clone();
pool1.spawn_broadcast(move |_| tx.send(()).unwrap())
})
}
});
assert_eq!(rx.into_iter().count(), 3 * 7);
}
#[test]
fn broadcast_mutual_sleepy() {
let count = AtomicUsize::new(0);
let pool1 = ThreadPoolBuilder::new().num_threads(3).build().unwrap();
let pool2 = ThreadPoolBuilder::new().num_threads(7).build().unwrap();
pool1.install(|| {
thread::sleep(time::Duration::from_secs(1));
pool2.broadcast(|_| {
thread::sleep(time::Duration::from_secs(1));
pool1.broadcast(|_| {
thread::sleep(time::Duration::from_millis(100));
count.fetch_add(1, Ordering::Relaxed);
})
})
});
assert_eq!(count.into_inner(), 3 * 7);
}
#[test]
fn spawn_broadcast_mutual_sleepy() {
let (tx, rx) = crossbeam_channel::unbounded();
let pool1 = Arc::new(ThreadPoolBuilder::new().num_threads(3).build().unwrap());
let pool2 = ThreadPoolBuilder::new().num_threads(7).build().unwrap();
pool1.spawn({
let pool1 = Arc::clone(&pool1);
move || {
thread::sleep(time::Duration::from_secs(1));
pool2.spawn_broadcast(move |_| {
let tx = tx.clone();
thread::sleep(time::Duration::from_secs(1));
pool1.spawn_broadcast(move |_| {
thread::sleep(time::Duration::from_millis(100));
tx.send(()).unwrap();
})
})
}
});
assert_eq!(rx.into_iter().count(), 3 * 7);
}
#[test]
fn broadcast_panic_one() {
let count = AtomicUsize::new(0);
let pool = ThreadPoolBuilder::new().num_threads(7).build().unwrap();
let result = crate::unwind::halt_unwinding(|| {
pool.broadcast(|ctx| {
count.fetch_add(1, Ordering::Relaxed);
if ctx.index() == 3 {
panic!("Hello, world!");
}
})
});
assert_eq!(count.into_inner(), 7);
assert!(result.is_err(), "broadcast panic should propagate!");
}
#[test]
fn spawn_broadcast_panic_one() {
let (tx, rx) = crossbeam_channel::unbounded();
let (panic_tx, panic_rx) = crossbeam_channel::unbounded();
let pool = ThreadPoolBuilder::new()
.num_threads(7)
.panic_handler(move |e| panic_tx.send(e).unwrap())
.build()
.unwrap();
pool.spawn_broadcast(move |ctx| {
tx.send(()).unwrap();
if ctx.index() == 3 {
panic!("Hello, world!");
}
});
drop(pool); // including panic_tx
assert_eq!(rx.into_iter().count(), 7);
assert_eq!(panic_rx.into_iter().count(), 1);
}
#[test]
fn broadcast_panic_many() {
let count = AtomicUsize::new(0);
let pool = ThreadPoolBuilder::new().num_threads(7).build().unwrap();
let result = crate::unwind::halt_unwinding(|| {
pool.broadcast(|ctx| {
count.fetch_add(1, Ordering::Relaxed);
if ctx.index() % 2 == 0 {
panic!("Hello, world!");
}
})
});
assert_eq!(count.into_inner(), 7);
assert!(result.is_err(), "broadcast panic should propagate!");
}
#[test]
fn spawn_broadcast_panic_many() {
let (tx, rx) = crossbeam_channel::unbounded();
let (panic_tx, panic_rx) = crossbeam_channel::unbounded();
let pool = ThreadPoolBuilder::new()
.num_threads(7)
.panic_handler(move |e| panic_tx.send(e).unwrap())
.build()
.unwrap();
pool.spawn_broadcast(move |ctx| {
tx.send(()).unwrap();
if ctx.index() % 2 == 0 {
panic!("Hello, world!");
}
});
drop(pool); // including panic_tx
assert_eq!(rx.into_iter().count(), 7);
assert_eq!(panic_rx.into_iter().count(), 4);
}
#[test]
fn broadcast_sleep_race() {
let test_duration = time::Duration::from_secs(1);
let pool = ThreadPoolBuilder::new().num_threads(7).build().unwrap();
let start = time::Instant::now();
while start.elapsed() < test_duration {
pool.broadcast(|ctx| {
// A slight spread of sleep duration increases the chance that one
// of the threads will race in the pool's idle sleep afterward.
thread::sleep(time::Duration::from_micros(ctx.index() as u64));
});
}
}
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