New upstream version 1.70.0+dfsg1

[rustc.git] / vendor / futures-util / benches_disabled / bilock.rs

diff --git a/vendor/futures-util/benches_disabled/bilock.rs b/vendor/futures-util/benches_disabled/bilock.rs
deleted file mode 100644 (file)
index 417f75d..0000000
--- a/vendor/futures-util/benches_disabled/bilock.rs
+++ /dev/null
@@ -1,122 +0,0 @@
-#![feature(test)]
-
-#[cfg(feature = "bilock")]
-mod bench {
-    use futures::executor::LocalPool;
-    use futures::task::{Context, Waker};
-    use futures_util::lock::BiLock;
-    use futures_util::lock::BiLockAcquire;
-    use futures_util::lock::BiLockAcquired;
-    use futures_util::task::ArcWake;
-
-    use std::sync::Arc;
-    use test::Bencher;
-
-    fn notify_noop() -> Waker {
-        struct Noop;
-
-        impl ArcWake for Noop {
-            fn wake(_: &Arc<Self>) {}
-        }
-
-        ArcWake::into_waker(Arc::new(Noop))
-    }
-
-    /// Pseudo-stream which simply calls `lock.poll()` on `poll`
-    struct LockStream {
-        lock: BiLockAcquire<u32>,
-    }
-
-    impl LockStream {
-        fn new(lock: BiLock<u32>) -> Self {
-            Self { lock: lock.lock() }
-        }
-
-        /// Release a lock after it was acquired in `poll`,
-        /// so `poll` could be called again.
-        fn release_lock(&mut self, guard: BiLockAcquired<u32>) {
-            self.lock = guard.unlock().lock()
-        }
-    }
-
-    impl Stream for LockStream {
-        type Item = BiLockAcquired<u32>;
-        type Error = ();
-
-        fn poll_next(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>, Self::Error> {
-            self.lock.poll(cx).map(|a| a.map(Some))
-        }
-    }
-
-    #[bench]
-    fn contended(b: &mut Bencher) {
-        let pool = LocalPool::new();
-        let mut exec = pool.executor();
-        let waker = notify_noop();
-        let mut map = task::LocalMap::new();
-        let mut waker = task::Context::new(&mut map, &waker, &mut exec);
-
-        b.iter(|| {
-            let (x, y) = BiLock::new(1);
-
-            let mut x = LockStream::new(x);
-            let mut y = LockStream::new(y);
-
-            for _ in 0..1000 {
-                let x_guard = match x.poll_next(&mut waker) {
-                    Ok(Poll::Ready(Some(guard))) => guard,
-                    _ => panic!(),
-                };
-
-                // Try poll second lock while first lock still holds the lock
-                match y.poll_next(&mut waker) {
-                    Ok(Poll::Pending) => (),
-                    _ => panic!(),
-                };
-
-                x.release_lock(x_guard);
-
-                let y_guard = match y.poll_next(&mut waker) {
-                    Ok(Poll::Ready(Some(guard))) => guard,
-                    _ => panic!(),
-                };
-
-                y.release_lock(y_guard);
-            }
-            (x, y)
-        });
-    }
-
-    #[bench]
-    fn lock_unlock(b: &mut Bencher) {
-        let pool = LocalPool::new();
-        let mut exec = pool.executor();
-        let waker = notify_noop();
-        let mut map = task::LocalMap::new();
-        let mut waker = task::Context::new(&mut map, &waker, &mut exec);
-
-        b.iter(|| {
-            let (x, y) = BiLock::new(1);
-
-            let mut x = LockStream::new(x);
-            let mut y = LockStream::new(y);
-
-            for _ in 0..1000 {
-                let x_guard = match x.poll_next(&mut waker) {
-                    Ok(Poll::Ready(Some(guard))) => guard,
-                    _ => panic!(),
-                };
-
-                x.release_lock(x_guard);
-
-                let y_guard = match y.poll_next(&mut waker) {
-                    Ok(Poll::Ready(Some(guard))) => guard,
-                    _ => panic!(),
-                };
-
-                y.release_lock(y_guard);
-            }
-            (x, y)
-        })
-    }
-}