wip: consolidation, simplification

packages/core/src/util.rs

@@ -11,59 +11,6 @@ pub fn type_name_of<T>(_: T) -> &'static str {
     std::any::type_name::<T>()
 }
 
-use std::future::Future;
-use std::pin::Pin;
-use std::task::{Context, Poll};
-
-// use crate::task::{Context, Poll};
-
-/// Cooperatively gives up a timeslice to the task scheduler.
-///
-/// Calling this function will move the currently executing future to the back
-/// of the execution queue, making room for other futures to execute. This is
-/// especially useful after running CPU-intensive operations inside a future.
-///
-/// See also [`task::spawn_blocking`].
-///
-/// [`task::spawn_blocking`]: fn.spawn_blocking.html
-///
-/// # Examples
-///
-/// Basic usage:
-///
-/// ```
-/// # async_std::task::block_on(async {
-/// #
-/// use async_std::task;
-///
-/// task::yield_now().await;
-/// #
-/// # })
-/// ```
-#[inline]
-pub async fn yield_now() {
-    YieldNow(false).await
-}
-
-struct YieldNow(bool);
-
-impl Future for YieldNow {
-    type Output = ();
-
-    // The futures executor is implemented as a FIFO queue, so all this future
-    // does is re-schedule the future back to the end of the queue, giving room
-    // for other futures to progress.
-    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        if !self.0 {
-            self.0 = true;
-            cx.waker().wake_by_ref();
-            Poll::Pending
-        } else {
-            Poll::Ready(())
-        }
-    }
-}
-
 /// A component's unique identifier.
 ///
 /// `ScopeId` is a `usize` that is unique across the entire VirtualDOM - but not unique across time. If a component is