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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /src/test/ui/async-await/async-fn-size.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/async-await/async-fn-size.rs')
-rw-r--r-- | src/test/ui/async-await/async-fn-size.rs | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/src/test/ui/async-await/async-fn-size.rs b/src/test/ui/async-await/async-fn-size.rs deleted file mode 100644 index 0c1f36364..000000000 --- a/src/test/ui/async-await/async-fn-size.rs +++ /dev/null @@ -1,105 +0,0 @@ -// run-pass -// aux-build:arc_wake.rs -// edition:2018 - -extern crate arc_wake; - -use std::pin::Pin; -use std::future::Future; -use std::sync::{ - Arc, - atomic::{self, AtomicUsize}, -}; -use std::task::{Context, Poll}; -use arc_wake::ArcWake; - -struct Counter { - wakes: AtomicUsize, -} - -impl ArcWake for Counter { - fn wake(self: Arc<Self>) { - Self::wake_by_ref(&self) - } - fn wake_by_ref(arc_self: &Arc<Self>) { - arc_self.wakes.fetch_add(1, atomic::Ordering::SeqCst); - } -} - -struct WakeOnceThenComplete(bool, u8); - -impl Future for WakeOnceThenComplete { - type Output = u8; - fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<u8> { - if self.0 { - Poll::Ready(self.1) - } else { - cx.waker().wake_by_ref(); - self.0 = true; - Poll::Pending - } - } -} - -fn wait(fut: impl Future<Output = u8>) -> u8 { - let mut fut = Box::pin(fut); - let counter = Arc::new(Counter { wakes: AtomicUsize::new(0) }); - let waker = ArcWake::into_waker(counter.clone()); - let mut cx = Context::from_waker(&waker); - loop { - match fut.as_mut().poll(&mut cx) { - Poll::Ready(out) => return out, - Poll::Pending => (), - } - } -} - -fn base() -> WakeOnceThenComplete { WakeOnceThenComplete(false, 1) } - -async fn await1_level1() -> u8 { - base().await -} - -async fn await2_level1() -> u8 { - base().await + base().await -} - -async fn await3_level1() -> u8 { - base().await + base().await + base().await -} - -async fn await3_level2() -> u8 { - await3_level1().await + await3_level1().await + await3_level1().await -} - -async fn await3_level3() -> u8 { - await3_level2().await + await3_level2().await + await3_level2().await -} - -async fn await3_level4() -> u8 { - await3_level3().await + await3_level3().await + await3_level3().await -} - -async fn await3_level5() -> u8 { - await3_level4().await + await3_level4().await + await3_level4().await -} - -fn main() { - assert_eq!(2, std::mem::size_of_val(&base())); - assert_eq!(3, std::mem::size_of_val(&await1_level1())); - assert_eq!(4, std::mem::size_of_val(&await2_level1())); - assert_eq!(5, std::mem::size_of_val(&await3_level1())); - assert_eq!(8, std::mem::size_of_val(&await3_level2())); - assert_eq!(11, std::mem::size_of_val(&await3_level3())); - assert_eq!(14, std::mem::size_of_val(&await3_level4())); - assert_eq!(17, std::mem::size_of_val(&await3_level5())); - - assert_eq!(1, wait(base())); - assert_eq!(1, wait(await1_level1())); - assert_eq!(2, wait(await2_level1())); - assert_eq!(3, wait(await3_level1())); - assert_eq!(9, wait(await3_level2())); - assert_eq!(27, wait(await3_level3())); - assert_eq!(81, wait(await3_level4())); - assert_eq!(243, wait(await3_level5())); -} |