1 files changed, 0 insertions, 116 deletions
diff --git a/ctr-std/src/future.rs b/ctr-std/src/future.rs
deleted file mode 100644
index 12ea1ea..0000000
--- a/ctr-std/src/future.rs
+++ /dev/null
@@ -1,116 +0,0 @@
-// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Asynchronous values.
-
-use core::cell::Cell;
-use core::marker::Unpin;
-use core::mem::PinMut;
-use core::option::Option;
-use core::ptr::NonNull;
-use core::task::{self, Poll};
-use core::ops::{Drop, Generator, GeneratorState};
-
-#[doc(inline)]
-pub use core::future::*;
-
-/// Wrap a future in a generator.
-///
-/// This function returns a `GenFuture` underneath, but hides it in `impl Trait` to give
-/// better error messages (`impl Future` rather than `GenFuture<[closure.....]>`).
-#[unstable(feature = "gen_future", issue = "50547")]
-pub fn from_generator<T: Generator<Yield = ()>>(x: T) -> impl Future<Output = T::Return> {
-    GenFuture(x)
-}
-
-/// A wrapper around generators used to implement `Future` for `async`/`await` code.
-#[unstable(feature = "gen_future", issue = "50547")]
-#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
-struct GenFuture<T: Generator<Yield = ()>>(T);
-
-// We rely on the fact that async/await futures are immovable in order to create
-// self-referential borrows in the underlying generator.
-impl<T: Generator<Yield = ()>> !Unpin for GenFuture<T> {}
-
-#[unstable(feature = "gen_future", issue = "50547")]
-impl<T: Generator<Yield = ()>> Future for GenFuture<T> {
-    type Output = T::Return;
-    fn poll(self: PinMut<Self>, cx: &mut task::Context) -> Poll<Self::Output> {
-        set_task_cx(cx, || match unsafe { PinMut::get_mut_unchecked(self).0.resume() } {
-            GeneratorState::Yielded(()) => Poll::Pending,
-            GeneratorState::Complete(x) => Poll::Ready(x),
-        })
-    }
-}
-
-thread_local! {
-    static TLS_CX: Cell<Option<NonNull<task::Context<'static>>>> = Cell::new(None);
-}
-
-struct SetOnDrop(Option<NonNull<task::Context<'static>>>);
-
-impl Drop for SetOnDrop {
-    fn drop(&mut self) {
-        TLS_CX.with(|tls_cx| {
-            tls_cx.set(self.0.take());
-        });
-    }
-}
-
-#[unstable(feature = "gen_future", issue = "50547")]
-/// Sets the thread-local task context used by async/await futures.
-pub fn set_task_cx<F, R>(cx: &mut task::Context, f: F) -> R
-where
-    F: FnOnce() -> R
-{
-    let old_cx = TLS_CX.with(|tls_cx| {
-        tls_cx.replace(NonNull::new(
-            cx
-                as *mut task::Context
-                as *mut ()
-                as *mut task::Context<'static>
-        ))
-    });
-    let _reset_cx = SetOnDrop(old_cx);
-    f()
-}
-
-#[unstable(feature = "gen_future", issue = "50547")]
-/// Retrieves the thread-local task context used by async/await futures.
-///
-/// This function acquires exclusive access to the task context.
-///
-/// Panics if no task has been set or if the task context has already been
-/// retrived by a surrounding call to get_task_cx.
-pub fn get_task_cx<F, R>(f: F) -> R
-where
-    F: FnOnce(&mut task::Context) -> R
-{
-    let cx_ptr = TLS_CX.with(|tls_cx| {
-        // Clear the entry so that nested `with_get_cx` calls
-        // will fail or set their own value.
-        tls_cx.replace(None)
-    });
-    let _reset_cx = SetOnDrop(cx_ptr);
-
-    let mut cx_ptr = cx_ptr.expect(
-        "TLS task::Context not set. This is a rustc bug. \
-        Please file an issue on https://github.com/rust-lang/rust.");
-    unsafe { f(cx_ptr.as_mut()) }
-}
-
-#[unstable(feature = "gen_future", issue = "50547")]
-/// Polls a future in the current thread-local task context.
-pub fn poll_in_task_cx<F>(f: PinMut<F>) -> Poll<F::Output>
-where
-    F: Future
-{
-    get_task_cx(|cx| f.poll(cx))
-}