23 lines
912 B
Rust
23 lines
912 B
Rust
|
use rayon::prelude::*;
|
||
|
|
use rayon::ThreadPoolBuilder;
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
#[cfg_attr(any(target_os = "emscripten", target_family = "wasm"), ignore)]
|
||
|
|
fn cross_pool_busy() {
|
||
|
|
let pool1 = ThreadPoolBuilder::new().num_threads(1).build().unwrap();
|
||
|
|
let pool2 = ThreadPoolBuilder::new().num_threads(1).build().unwrap();
|
||
|
|
|
||
|
|
let n: i32 = 100;
|
||
|
|
let sum: i32 = pool1.install(move || {
|
||
|
|
// Each item will block on pool2, but pool1 can continue processing other work from the
|
||
|
|
// parallel iterator in the meantime. There's a chance that pool1 will still be awake to
|
||
|
|
// see the latch set without being tickled, and then it will drop that stack job. The latch
|
||
|
|
// internals must not assume that the job will still be alive after it's set!
|
||
|
|
(1..=n)
|
||
|
|
.into_par_iter()
|
||
|
|
.map(|i| pool2.install(move || i))
|
||
|
|
.sum()
|
||
|
|
});
|
||
|
|
assert_eq!(sum, n * (n + 1) / 2);
|
||
|
|
}
|