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use crate::AsyncRayonHandle;
use std::panic::{catch_unwind, AssertUnwindSafe};
use tokio::sync::oneshot;
pub fn spawn<F, R>(func: F) -> AsyncRayonHandle<R>
where
F: FnOnce() -> R + Send + 'static,
R: Send + 'static,
{
let (tx, rx) = oneshot::channel();
rayon::spawn(move || {
let _result = tx.send(catch_unwind(AssertUnwindSafe(func)));
});
AsyncRayonHandle { rx }
}
pub fn spawn_fifo<F, R>(func: F) -> AsyncRayonHandle<R>
where
F: FnOnce() -> R + Send + 'static,
R: Send + 'static,
{
let (tx, rx) = oneshot::channel();
rayon::spawn_fifo(move || {
let _result = tx.send(catch_unwind(AssertUnwindSafe(func)));
});
AsyncRayonHandle { rx }
}
#[cfg(test)]
mod tests {
use super::*;
use crate::test::init;
#[tokio::test]
async fn test_spawn_async_works() {
init();
let result = spawn(|| {
let thread_index = rayon::current_thread_index();
assert_eq!(thread_index, Some(0));
1337_usize
})
.await;
assert_eq!(result, 1337);
let thread_index = rayon::current_thread_index();
assert_eq!(thread_index, None);
}
#[tokio::test]
async fn test_spawn_fifo_async_works() {
init();
let result = spawn_fifo(|| {
let thread_index = rayon::current_thread_index();
assert_eq!(thread_index, Some(0));
1337_usize
})
.await;
assert_eq!(result, 1337);
let thread_index = rayon::current_thread_index();
assert_eq!(thread_index, None);
}
#[tokio::test]
#[should_panic(expected = "Task failed successfully")]
async fn test_spawn_propagates_panic() {
init();
let handle = spawn(|| {
panic!("Task failed successfully");
});
handle.await;
}
#[tokio::test]
#[should_panic(expected = "Task failed successfully")]
async fn test_spawn_fifo_propagates_panic() {
init();
let handle = spawn_fifo(|| {
panic!("Task failed successfully");
});
handle.await;
}
}