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Add soundness test for dropping scoped thread results before joining.

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This commit is contained in:
Mara Bos 2022-03-09 11:47:53 +01:00
parent 1c06eb7c1f
commit b97d87518d
1 changed files with 24 additions and 1 deletions
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25
library/std/src/thread/tests.rs
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@ -4,10 +4,11 @@ use crate::mem;
use crate::panic::panic_any; use crate::panic::panic_any;
use crate::result; use crate::result;
use crate::sync::{ use crate::sync::{
atomic::{AtomicBool, Ordering},
mpsc::{channel, Sender}, mpsc::{channel, Sender},
Arc, Barrier, Arc, Barrier,
}; };
use crate::thread::{self, ThreadId}; use crate::thread::{self, Scope, ThreadId};
use crate::time::Duration; use crate::time::Duration;
use crate::time::Instant; use crate::time::Instant;
@ -293,3 +294,25 @@ fn test_thread_id_not_equal() {
assert!(thread::current().id() != spawned_id); assert!(thread::current().id() != spawned_id);
} }
#[test]
fn test_scoped_threads_drop_result_before_join() {
let actually_finished = &AtomicBool::new(false);
struct X<'scope, 'env>(&'scope Scope<'scope, 'env>, &'env AtomicBool);
impl Drop for X<'_, '_> {
fn drop(&mut self) {
thread::sleep(Duration::from_millis(20));
let actually_finished = self.1;
self.0.spawn(move || {
thread::sleep(Duration::from_millis(20));
actually_finished.store(true, Ordering::Relaxed);
});
}
}
thread::scope(|s| {
s.spawn(move || {
thread::sleep(Duration::from_millis(20));
X(s, actually_finished)
});
});
assert!(actually_finished.load(Ordering::Relaxed));
}