Sleep trait

src/executor/mod.rs

@@ -13,6 +13,9 @@ pub mod current_thread;
 #[cfg(feature = "use_std")]
 mod enter;
 
+#[cfg(feature = "use_std")]
+mod sleep;
+
 #[allow(deprecated)]
 #[cfg(feature = "use_std")]
 pub use task_impl::{Unpark, Executor, Run};
@@ -26,3 +29,6 @@ pub use self::current_thread::CurrentThread;
 
 #[cfg(feature = "use_std")]
 pub use self::enter::{enter, Enter};
+
+#[cfg(feature = "use_std")]
+pub use self::sleep::{Sleep, Wakeup};

src/executor/sleep.rs

@@ -0,0 +1,22 @@
+use std::time::Duration;
+
+/// Puts the current thread to sleep.
+pub trait Sleep {
+    /// Wake up handle.
+    type Wakeup: Wakeup;
+
+    /// Get a new `Wakeup` handle.
+    fn wakeup(&self) -> Self::Wakeup;
+
+    /// Put the current thread to sleep.
+    fn sleep(&mut self);
+
+    /// Put the current thread to sleep for at most `duration`.
+    fn sleep_timeout(&mut self, duration: Duration);
+}
+
+/// Wake up a sleeping thread.
+pub trait Wakeup: Send + Sync + 'static {
+    /// Wake up the sleeping thread.
+    fn wakeup(&self);
+}