Add `smol` async runtime

2 files changed, 24 insertions, 0 deletions

diff --git a/futures/src/executor.rs b/futures/src/executor.rs
index fa87216a..b35b5bc1 100644
--- a/futures/src/executor.rs
+++ b/futures/src/executor.rs
@@ -13,6 +13,9 @@ mod tokio_old;
 #[cfg(all(not(target_arch = "wasm32"), feature = "async-std"))]
 mod async_std;
 
+#[cfg(all(not(target_arch = "wasm32"), feature = "smol"))]
+mod smol;
+
 #[cfg(target_arch = "wasm32")]
 mod wasm_bindgen;
 
@@ -30,6 +33,9 @@ pub use self::tokio_old::TokioOld;
 #[cfg(all(not(target_arch = "wasm32"), feature = "async-std"))]
 pub use self::async_std::AsyncStd;
 
+#[cfg(all(not(target_arch = "wasm32"), feature = "smol"))]
+pub use self::smol::Smol;
+
 #[cfg(target_arch = "wasm32")]
 pub use wasm_bindgen::WasmBindgen;
 
diff --git a/futures/src/executor/smol.rs b/futures/src/executor/smol.rs
new file mode 100644
index 00000000..deafd43a
--- /dev/null
+++ b/futures/src/executor/smol.rs
@@ -0,0 +1,18 @@
+use crate::Executor;
+
+use futures::Future;
+
+/// A `smol` runtime.
+#[cfg_attr(docsrs, doc(cfg(feature = "smol")))]
+#[derive(Debug)]
+pub struct Smol;
+
+impl Executor for Smol {
+    fn new() -> Result<Self, futures::io::Error> {
+        Ok(Self)
+    }
+
+    fn spawn(&self, future: impl Future<Output = ()> + Send + 'static) {
+        smol::spawn(future).detach();
+    }
+}