karyon_core/async_runtime/
task.rs

1use std::future::Future;
2use std::pin::Pin;
3use std::task::{Context, Poll};
4
5use crate::error::Error;
6
7pub struct Task<T> {
8    #[cfg(feature = "smol")]
9    inner_task: smol::Task<T>,
10    #[cfg(feature = "tokio")]
11    inner_task: tokio::task::JoinHandle<T>,
12}
13
14impl<T> Task<T> {
15    pub async fn cancel(self) {
16        #[cfg(feature = "smol")]
17        self.inner_task.cancel().await;
18        #[cfg(feature = "tokio")]
19        self.inner_task.abort();
20    }
21
22    /// Detaches the task so it continues running in the background without
23    /// being cancelled when dropped.
24    pub fn detach(self) {
25        #[cfg(feature = "smol")]
26        self.inner_task.detach();
27        #[cfg(feature = "tokio")]
28        drop(self.inner_task);
29    }
30}
31
32impl<T> Future for Task<T> {
33    type Output = Result<T, Error>;
34
35    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
36        #[cfg(feature = "smol")]
37        let result = smol::Task::poll(Pin::new(&mut self.inner_task), cx);
38        #[cfg(feature = "tokio")]
39        let result = tokio::task::JoinHandle::poll(Pin::new(&mut self.inner_task), cx);
40
41        #[cfg(feature = "smol")]
42        return result.map(Ok);
43
44        #[cfg(feature = "tokio")]
45        return result.map_err(|e| e.into());
46    }
47}
48
49#[cfg(feature = "smol")]
50impl<T> From<smol::Task<T>> for Task<T> {
51    fn from(t: smol::Task<T>) -> Task<T> {
52        Task { inner_task: t }
53    }
54}
55
56#[cfg(feature = "tokio")]
57impl<T> From<tokio::task::JoinHandle<T>> for Task<T> {
58    fn from(t: tokio::task::JoinHandle<T>) -> Task<T> {
59        Task { inner_task: t }
60    }
61}
karyon_core/async_runtime/task.rs

karyon_core/async_runtime/
task.rs
