diff options
author | Haibo Huang <hhb@google.com> | 2020-05-08 19:24:52 -0700 |
---|---|---|
committer | Haibo Huang <hhb@google.com> | 2020-05-08 19:24:52 -0700 |
commit | 0cf3d2c0b7cf7aeb3e0234163eab7eb9d802ca2a (patch) | |
tree | 690f7ecc8bd12f25062ccd4e642aa1ccf53a6973 | |
parent | ee6d02b6c48b7119b81a913a760092450cf32df2 (diff) | |
download | futures-channel-0cf3d2c0b7cf7aeb3e0234163eab7eb9d802ca2a.tar.gz |
Upgrade rust/crates/futures-channel to 0.3.5
Test: None
Change-Id: Id5112b347ceb42aab512c2ae348b230f59ac5ba1
-rw-r--r-- | Cargo.toml | 8 | ||||
-rw-r--r-- | Cargo.toml.orig | 8 | ||||
-rw-r--r-- | LICENSE-APACHE | 202 | ||||
-rw-r--r-- | LICENSE-MIT | 26 | ||||
-rw-r--r-- | METADATA | 12 | ||||
-rw-r--r-- | src/lib.rs | 2 | ||||
-rw-r--r-- | src/mpsc/mod.rs | 16 | ||||
-rw-r--r-- | src/oneshot.rs | 49 | ||||
-rw-r--r-- | tests/oneshot.rs | 29 |
9 files changed, 298 insertions, 54 deletions
@@ -13,21 +13,21 @@ [package] edition = "2018" name = "futures-channel" -version = "0.3.4" +version = "0.3.5" authors = ["Alex Crichton <alex@alexcrichton.com>"] description = "Channels for asynchronous communication using futures-rs.\n" homepage = "https://rust-lang.github.io/futures-rs" -documentation = "https://docs.rs/futures-channel/0.3.0" +documentation = "https://docs.rs/futures-channel/0.3.5" license = "MIT OR Apache-2.0" repository = "https://github.com/rust-lang/futures-rs" [package.metadata.docs.rs] all-features = true [dependencies.futures-core] -version = "0.3.4" +version = "0.3.5" default-features = false [dependencies.futures-sink] -version = "0.3.4" +version = "0.3.5" optional = true default-features = false diff --git a/Cargo.toml.orig b/Cargo.toml.orig index 55f292d..9a8af2b 100644 --- a/Cargo.toml.orig +++ b/Cargo.toml.orig @@ -1,12 +1,12 @@ [package] name = "futures-channel" edition = "2018" -version = "0.3.4" +version = "0.3.5" authors = ["Alex Crichton <alex@alexcrichton.com>"] license = "MIT OR Apache-2.0" repository = "https://github.com/rust-lang/futures-rs" homepage = "https://rust-lang.github.io/futures-rs" -documentation = "https://docs.rs/futures-channel/0.3.0" +documentation = "https://docs.rs/futures-channel/0.3.5" description = """ Channels for asynchronous communication using futures-rs. """ @@ -24,8 +24,8 @@ unstable = ["futures-core/unstable"] cfg-target-has-atomic = ["futures-core/cfg-target-has-atomic"] [dependencies] -futures-core = { path = "../futures-core", version = "0.3.4", default-features = false } -futures-sink = { path = "../futures-sink", version = "0.3.4", default-features = false, optional = true } +futures-core = { path = "../futures-core", version = "0.3.5", default-features = false } +futures-sink = { path = "../futures-sink", version = "0.3.5", default-features = false, optional = true } [package.metadata.docs.rs] all-features = true diff --git a/LICENSE-APACHE b/LICENSE-APACHE new file mode 100644 index 0000000..9eb0b09 --- /dev/null +++ b/LICENSE-APACHE @@ -0,0 +1,202 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + +TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + +1. 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In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + +9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + +END OF TERMS AND CONDITIONS + +APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + +Copyright (c) 2016 Alex Crichton +Copyright (c) 2017 The Tokio Authors + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. diff --git a/LICENSE-MIT b/LICENSE-MIT new file mode 100644 index 0000000..8ad082e --- /dev/null +++ b/LICENSE-MIT @@ -0,0 +1,26 @@ +Copyright (c) 2016 Alex Crichton +Copyright (c) 2017 The Tokio Authors + +Permission is hereby granted, free of charge, to any +person obtaining a copy of this software and associated +documentation files (the "Software"), to deal in the +Software without restriction, including without +limitation the rights to use, copy, modify, merge, +publish, distribute, sublicense, and/or sell copies of +the Software, and to permit persons to whom the Software +is furnished to do so, subject to the following +conditions: + +The above copyright notice and this permission notice +shall be included in all copies or substantial portions +of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF +ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A +PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT +SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR +IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +DEALINGS IN THE SOFTWARE. @@ -1,7 +1,5 @@ name: "futures-channel" -description: - "Channels for asynchronous communication using futures-rs." - +description: "Channels for asynchronous communication using futures-rs." third_party { url { type: HOMEPAGE @@ -11,7 +9,11 @@ third_party { type: GIT value: "https://github.com/rust-lang/futures-rs" } - version: "0.3.4" - last_upgrade_date { year: 2020 month: 3 day: 17 } + version: "0.3.5" license_type: NOTICE + last_upgrade_date { + year: 2020 + month: 5 + day: 8 + } } @@ -17,7 +17,7 @@ #![doc(test(attr(deny(warnings), allow(dead_code, unused_assignments, unused_variables))))] -#![doc(html_root_url = "https://docs.rs/futures-channel/0.3.0")] +#![doc(html_root_url = "https://docs.rs/futures-channel/0.3.5")] #[cfg(all(feature = "cfg-target-has-atomic", not(feature = "unstable")))] compile_error!("The `cfg-target-has-atomic` feature requires the `unstable` feature as an explicit opt-in to unstable features"); diff --git a/src/mpsc/mod.rs b/src/mpsc/mod.rs index f69f440..bce5e2e 100644 --- a/src/mpsc/mod.rs +++ b/src/mpsc/mod.rs @@ -109,7 +109,7 @@ struct BoundedSenderInner<T> { // unblocked. sender_task: Arc<Mutex<SenderTask>>, - // True if the sender might be blocked. This is an optimization to avoid + // `true` if the sender might be blocked. This is an optimization to avoid // having to lock the mutex most of the time. maybe_parked: bool, } @@ -189,7 +189,7 @@ impl fmt::Display for SendError { impl std::error::Error for SendError {} impl SendError { - /// Returns true if this error is a result of the channel being full. + /// Returns `true` if this error is a result of the channel being full. pub fn is_full(&self) -> bool { match self.kind { SendErrorKind::Full => true, @@ -197,7 +197,7 @@ impl SendError { } } - /// Returns true if this error is a result of the receiver being dropped. + /// Returns `true` if this error is a result of the receiver being dropped. pub fn is_disconnected(&self) -> bool { match self.kind { SendErrorKind::Disconnected => true, @@ -227,12 +227,12 @@ impl<T> fmt::Display for TrySendError<T> { impl<T: core::any::Any> std::error::Error for TrySendError<T> {} impl<T> TrySendError<T> { - /// Returns true if this error is a result of the channel being full. + /// Returns `true` if this error is a result of the channel being full. pub fn is_full(&self) -> bool { self.err.is_full() } - /// Returns true if this error is a result of the receiver being dropped. + /// Returns `true` if this error is a result of the receiver being dropped. pub fn is_disconnected(&self) -> bool { self.err.is_disconnected() } @@ -536,7 +536,7 @@ impl<T> BoundedSenderInner<T> { // This operation will also atomically determine if the sender task // should be parked. // - // None is returned in the case that the channel has been closed by the + // `None` is returned in the case that the channel has been closed by the // receiver. This happens when `Receiver::close` is called or the // receiver is dropped. let park_self = match self.inc_num_messages() { @@ -997,7 +997,7 @@ impl<T> Receiver<T> { /// no longer empty. /// /// This function will panic if called after `try_next` or `poll_next` has - /// returned None. + /// returned `None`. pub fn try_next(&mut self) -> Result<Option<T>, TryRecvError> { match self.next_message() { Poll::Ready(msg) => { @@ -1127,7 +1127,7 @@ impl<T> UnboundedReceiver<T> { /// no longer empty. /// /// This function will panic if called after `try_next` or `poll_next` has - /// returned None. + /// returned `None`. pub fn try_next(&mut self) -> Result<Option<T>, TryRecvError> { match self.next_message() { Poll::Ready(msg) => { diff --git a/src/oneshot.rs b/src/oneshot.rs index d3be67e..5f76cee 100644 --- a/src/oneshot.rs +++ b/src/oneshot.rs @@ -82,22 +82,23 @@ struct Inner<T> { /// /// ``` /// use futures::channel::oneshot; -/// use futures::future::FutureExt; -/// use std::thread; +/// use std::{thread, time::Duration}; /// /// let (sender, receiver) = oneshot::channel::<i32>(); /// -/// # let t = /// thread::spawn(|| { -/// let future = receiver.map(|i| { -/// println!("got: {:?}", i); -/// }); -/// // ... -/// # return future; +/// println!("THREAD: sleeping zzz..."); +/// thread::sleep(Duration::from_millis(1000)); +/// println!("THREAD: i'm awake! sending."); +/// sender.send(3).unwrap(); /// }); /// -/// sender.send(3).unwrap(); -/// # futures::executor::block_on(t.join().unwrap()); +/// println!("MAIN: doing some useful stuff"); +/// +/// futures::executor::block_on(async { +/// println!("MAIN: waiting for msg..."); +/// println!("MAIN: got: {:?}", receiver.await) +/// }); /// ``` pub fn channel<T>() -> (Sender<T>, Receiver<T>) { let inner = Arc::new(Inner::new()); @@ -126,7 +127,7 @@ impl<T> Inner<T> { } // Note that this lock acquisition may fail if the receiver - // is closed and sets the `complete` flag to true, whereupon + // is closed and sets the `complete` flag to `true`, whereupon // the receiver may call `poll()`. if let Some(mut slot) = self.data.try_lock() { assert!(slot.is_none()); @@ -358,6 +359,15 @@ impl<T> Sender<T> { self.inner.poll_canceled(cx) } + /// Creates a future that resolves when this `Sender`'s corresponding + /// [`Receiver`](Receiver) half has hung up. + /// + /// This is a utility wrapping [`poll_canceled`](Sender::poll_canceled) + /// to expose a [`Future`](core::future::Future). + pub fn cancellation(&mut self) -> Cancellation<'_, T> { + Cancellation { inner: self } + } + /// Tests to see whether this `Sender`'s corresponding `Receiver` /// has been dropped. /// @@ -375,6 +385,23 @@ impl<T> Drop for Sender<T> { } } +/// A future that resolves when the receiving end of a channel has hung up. +/// +/// This is an `.await`-friendly interface around [`poll_canceled`](Sender::poll_canceled). +#[must_use = "futures do nothing unless you `.await` or poll them"] +#[derive(Debug)] +pub struct Cancellation<'a, T> { + inner: &'a mut Sender<T>, +} + +impl<T> Future for Cancellation<'_, T> { + type Output = (); + + fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<()> { + self.inner.poll_canceled(cx) + } +} + /// Error returned from a [`Receiver`](Receiver) when the corresponding /// [`Sender`](Sender) is dropped. #[derive(Clone, Copy, PartialEq, Eq, Debug)] diff --git a/tests/oneshot.rs b/tests/oneshot.rs index 5194ce4..a22d039 100644 --- a/tests/oneshot.rs +++ b/tests/oneshot.rs @@ -1,9 +1,8 @@ use futures::channel::oneshot::{self, Sender}; use futures::executor::block_on; -use futures::future::{Future, FutureExt, poll_fn}; +use futures::future::{FutureExt, poll_fn}; use futures::task::{Context, Poll}; use futures_test::task::panic_waker_ref; -use std::pin::Pin; use std::sync::mpsc; use std::thread; @@ -25,33 +24,21 @@ fn smoke_poll() { #[test] fn cancel_notifies() { - let (tx, rx) = oneshot::channel::<u32>(); + let (mut tx, rx) = oneshot::channel::<u32>(); - let t = thread::spawn(|| { - block_on(WaitForCancel { tx }); + let t = thread::spawn(move || { + block_on(tx.cancellation()); }); drop(rx); t.join().unwrap(); } -struct WaitForCancel { - tx: Sender<u32>, -} - -impl Future for WaitForCancel { - type Output = (); - - fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> { - self.tx.poll_canceled(cx) - } -} - #[test] fn cancel_lots() { let (tx, rx) = mpsc::channel::<(Sender<_>, mpsc::Sender<_>)>(); let t = thread::spawn(move || { - for (tx, tx2) in rx { - block_on(WaitForCancel { tx }); + for (mut tx, tx2) in rx { + block_on(tx.cancellation()); tx2.send(()).unwrap(); } }); @@ -93,13 +80,13 @@ fn close() { #[test] fn close_wakes() { - let (tx, mut rx) = oneshot::channel::<u32>(); + let (mut tx, mut rx) = oneshot::channel::<u32>(); let (tx2, rx2) = mpsc::channel(); let t = thread::spawn(move || { rx.close(); rx2.recv().unwrap(); }); - block_on(WaitForCancel { tx }); + block_on(tx.cancellation()); tx2.send(()).unwrap(); t.join().unwrap(); } |