pin-utils crate & remove glob imports

README.md

@@ -26,19 +26,17 @@
 
 ## Usage
 
-First, add this to your `Cargo.toml`:
+Add this to your `Cargo.toml`:
 
 ```toml
 [dependencies]
 futures-preview = "0.3.0-alpha.2"
 ```
 
-Next, add this to your crate:
+Now, you can use futures-rs:
 
 ```rust
-extern crate futures; // Note: It's not `futures_preview`
-
-use futures::future::Future;
+use futures::future::Future; // Note: It's not `futures_preview`
 ```
 
 ### Feature `std`

futures-channel/Cargo.toml

@@ -25,3 +25,4 @@ futures-core-preview = { path = "../futures-core", version = "0.3.0-alpha.2", de
 
 [dev-dependencies]
 futures-preview = { path = "../futures", version = "0.3.0-alpha.2", default-features = true }
+pin-utils = "0.1.0-alpha.1"

futures-channel/benches/sync_mpsc.rs

@@ -1,19 +1,11 @@
 #![feature(test, futures_api, pin, arbitrary_self_types)]
 
-#[macro_use]
-extern crate futures;
-extern crate test;
-
-use futures::task::{self, Wake, LocalWaker};
+use futures::ready;
+use futures::channel::mpsc::{self, Sender, UnboundedSender};
 use futures::executor::LocalPool;
-use futures::prelude::*;
-use futures::channel::mpsc::{
-    unbounded,
-    channel,
-    Sender,
-    UnboundedSender,
-};
-
+use futures::stream::{Stream, StreamExt};
+use futures::sink::Sink;
+use futures::task::{self, Poll, Wake, LocalWaker};
 use std::mem::PinMut;
 use std::sync::Arc;
 use test::Bencher;
@@ -41,7 +33,7 @@ fn noop_cx(f: impl FnOnce(&mut task::Context)) {
 fn unbounded_1_tx(b: &mut Bencher) {
     noop_cx(|cx| {
         b.iter(|| {
-            let (tx, mut rx) = unbounded();
+            let (tx, mut rx) = mpsc::unbounded();
 
             // 1000 iterations to avoid measuring overhead of initialization
             // Result should be divided by 1000
@@ -64,7 +56,7 @@ fn unbounded_1_tx(b: &mut Bencher) {
 fn unbounded_100_tx(b: &mut Bencher) {
     noop_cx(|cx| {
         b.iter(|| {
-            let (tx, mut rx) = unbounded();
+            let (tx, mut rx) = mpsc::unbounded();
 
             let tx: Vec<_> = (0..100).map(|_| tx.clone()).collect();
 
@@ -86,7 +78,7 @@ fn unbounded_100_tx(b: &mut Bencher) {
 fn unbounded_uncontended(b: &mut Bencher) {
     noop_cx(|cx| {
         b.iter(|| {
-            let (tx, mut rx) = unbounded();
+            let (tx, mut rx) = mpsc::unbounded();
 
             for i in 0..1000 {
                 UnboundedSender::unbounded_send(&tx, i).expect("send");
@@ -127,7 +119,7 @@ impl Stream for TestSender {
 fn bounded_1_tx(b: &mut Bencher) {
     noop_cx(|cx| {
         b.iter(|| {
-            let (tx, mut rx) = channel(0);
+            let (tx, mut rx) = mpsc::channel(0);
 
             let mut tx = TestSender { tx, last: 0 };
 
@@ -146,7 +138,7 @@ fn bounded_100_tx(b: &mut Bencher) {
     noop_cx(|cx| {
         b.iter(|| {
             // Each sender can send one item after specified capacity
-            let (tx, mut rx) = channel(0);
+            let (tx, mut rx) = mpsc::channel(0);
 
             let mut tx: Vec<_> = (0..100).map(|_| {
                 TestSender {

futures-channel/src/lib.rs

@@ -12,11 +12,6 @@
 
 #![doc(html_root_url = "https://rust-lang-nursery.github.io/futures-doc/0.3.0-alpha.2/futures_channel")]
 
-#[cfg(feature = "std")]
-extern crate std;
-
-extern crate futures_core;
-
 macro_rules! if_std {
     ($($i:item)*) => ($(
         #[cfg(feature = "std")]

futures-channel/src/oneshot.rs

@@ -84,24 +84,22 @@ struct Inner<T> {
 ///
 /// ```
 /// use futures::channel::oneshot;
-/// use futures::prelude::*;
+/// use futures::future::FutureExt;
 /// use std::thread;
 ///
-/// fn main() {
-///     let (sender, receiver) = oneshot::channel::<i32>();
+/// let (sender, receiver) = oneshot::channel::<i32>();
 ///
 /// # let t =
-///     thread::spawn(|| {
-///         let future = receiver.map(|i| {
-///             println!("got: {:?}", i);
-///         });
-///         // ...
-/// # return future;
+/// thread::spawn(|| {
+///     let future = receiver.map(|i| {
+///         println!("got: {:?}", i);
 ///     });
+///     // ...
+/// # return future;
+/// });
 ///
-///     sender.send(3).unwrap();
+/// sender.send(3).unwrap();
 /// # futures::executor::block_on(t.join().unwrap());
-/// }
 /// ```
 pub fn channel<T>() -> (Sender<T>, Receiver<T>) {
     let inner = Arc::new(Inner::new());

futures-channel/tests/channel.rs

@@ -1,14 +1,12 @@
 #![feature(async_await, await_macro, futures_api)]
 
-extern crate futures;
-
-use std::sync::atomic::*;
-use std::thread;
-
-use futures::prelude::*;
-use futures::future::poll_fn;
-use futures::executor::block_on;
 use futures::channel::mpsc;
+use futures::executor::block_on;
+use futures::future::poll_fn;
+use futures::stream::StreamExt;
+use futures::sink::SinkExt;
+use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
+use std::thread;
 
 #[test]
 fn sequence() {

futures-channel/tests/mpsc-close.rs

@@ -1,14 +1,12 @@
-extern crate futures;
-
-use std::thread;
-
-use futures::prelude::*;
-use futures::channel::mpsc::*;
+use futures::channel::mpsc;
 use futures::executor::block_on;
+use futures::sink::SinkExt;
+use futures::stream::StreamExt;
+use std::thread;
 
 #[test]
 fn smoke() {
-    let (mut sender, receiver) = channel(1);
+    let (mut sender, receiver) = mpsc::channel(1);
 
     let t = thread::spawn(move || {
         while let Ok(()) = block_on(sender.send(42)) {}

futures-channel/tests/mpsc.rs

@@ -1,17 +1,15 @@
 #![feature(futures_api, async_await, await_macro, pin)]
 
-#[macro_use]
-extern crate futures;
-
-use std::thread;
+use futures::channel::{mpsc, oneshot};
+use futures::executor::{block_on, block_on_stream};
+use futures::future::{FutureExt, poll_fn};
+use futures::stream::{Stream, StreamExt};
+use futures::sink::{Sink, SinkExt};
+use futures::task::Poll;
+use pin_utils::pin_mut;
 use std::sync::{Arc, Mutex};
 use std::sync::atomic::{AtomicUsize, Ordering};
-
-use futures::prelude::*;
-use futures::future::poll_fn;
-use futures::channel::mpsc;
-use futures::channel::oneshot;
-use futures::executor::{block_on, block_on_stream};
+use std::thread;
 
 trait AssertSend: Send {}
 impl AssertSend for mpsc::Sender<i32> {}

futures-channel/tests/oneshot.rs

@@ -1,20 +1,16 @@
 #![feature(futures_api, arbitrary_self_types, pin)]
 
-extern crate futures;
-
+use futures::channel::oneshot::{self, Sender};
+use futures::executor::block_on;
+use futures::future::{Future, FutureExt, poll_fn};
+use futures::task::{self, Poll};
 use std::mem::PinMut;
 use std::sync::mpsc;
 use std::thread;
 
-use futures::future::poll_fn;
-use futures::prelude::*;
-use futures::task;
-use futures::channel::oneshot::*;
-use futures::executor::block_on;
-
 #[test]
 fn smoke_poll() {
-    let (mut tx, rx) = channel::<u32>();
+    let (mut tx, rx) = oneshot::channel::<u32>();
     let mut rx = Some(rx);
     let f = poll_fn(|cx| {
         assert!(tx.poll_cancel(cx).is_pending());
@@ -30,7 +26,7 @@ fn smoke_poll() {
 
 #[test]
 fn cancel_notifies() {
-    let (tx, rx) = channel::<u32>();
+    let (tx, rx) = oneshot::channel::<u32>();
 
     let t = thread::spawn(|| {
         block_on(WaitForCancel { tx: tx });
@@ -62,7 +58,7 @@ fn cancel_lots() {
     });
 
     for _ in 0..20000 {
-        let (otx, orx) = channel::<u32>();
+        let (otx, orx) = oneshot::channel::<u32>();
         let (tx2, rx2) = mpsc::channel();
         tx.send((otx, tx2)).unwrap();
         drop(orx);
@@ -75,7 +71,7 @@ fn cancel_lots() {
 
 #[test]
 fn close() {
-    let (mut tx, mut rx) = channel::<u32>();
+    let (mut tx, mut rx) = oneshot::channel::<u32>();
     rx.close();
     block_on(poll_fn(|cx| {
         match rx.poll_unpin(cx) {
@@ -89,7 +85,7 @@ fn close() {
 
 #[test]
 fn close_wakes() {
-    let (tx, mut rx) = channel::<u32>();
+    let (tx, mut rx) = oneshot::channel::<u32>();
     let (tx2, rx2) = mpsc::channel();
     let t = thread::spawn(move || {
         rx.close();
@@ -102,7 +98,7 @@ fn close_wakes() {
 
 #[test]
 fn is_canceled() {
-    let (tx, rx) = channel::<u32>();
+    let (tx, rx) = oneshot::channel::<u32>();
     assert!(!tx.is_canceled());
     drop(rx);
     assert!(tx.is_canceled());
@@ -118,7 +114,7 @@ fn cancel_sends() {
     });
 
     for _ in 0..20000 {
-        let (otx, mut orx) = channel::<u32>();
+        let (otx, mut orx) = oneshot::channel::<u32>();
         tx.send(otx).unwrap();
 
         orx.close();

futures-core/src/lib.rs

@@ -9,12 +9,6 @@
 
 #![doc(html_root_url = "https://rust-lang-nursery.github.io/futures-doc/0.3.0-alpha.2/futures_core")]
 
-#[cfg(feature = "std")]
-extern crate std;
-
-#[cfg(feature = "either")]
-extern crate either;
-
 #[doc(hidden)] pub use crate::future::Future;
 #[doc(hidden)] pub use crate::future::TryFuture;
 

futures-executor/Cargo.toml

@@ -26,6 +26,7 @@ futures-util-preview = { path = "../futures-util", version = "0.3.0-alpha.2", de
 futures-channel-preview = { path = "../futures-channel", version = "0.3.0-alpha.2", default-features = false}
 num_cpus = { version = "1.0", optional = true }
 lazy_static = { version = "1.0", optional = true }
+pin-utils = "0.1.0-alpha.1"
 
 [dev-dependencies]
 futures-preview = { path = "../futures", version = "0.3.0-alpha.2" }

futures-executor/benches/poll.rs

@@ -1,12 +1,8 @@
 #![feature(test, pin, arbitrary_self_types, futures_api)]
 
-extern crate futures;
-extern crate test;
-
-use futures::prelude::*;
-use futures::task::{self, Waker, LocalWaker, Wake, local_waker_from_nonlocal};
 use futures::executor::LocalPool;
-
+use futures::future::{Future, FutureExt};
+use futures::task::{self, Poll, Waker, LocalWaker, Wake};
 use std::marker::Unpin;
 use std::mem::PinMut;
 use std::sync::Arc;
@@ -19,7 +15,7 @@ fn notify_noop() -> LocalWaker {
         fn wake(_: &Arc<Self>) {}
     }
 
-    local_waker_from_nonlocal(Arc::new(Noop))
+    task::local_waker_from_nonlocal(Arc::new(Noop))
 }
 
 #[bench]

futures-executor/benches/thread_notify.rs

@@ -1,15 +1,10 @@
 #![feature(test, futures_api, pin, arbitrary_self_types)]
 
-extern crate futures;
-extern crate test;
-
+use futures::executor::block_on;
+use futures::future::Future;
+use futures::task::{self, Poll, Waker};
 use std::marker::Unpin;
 use std::mem::PinMut;
-
-use futures::prelude::*;
-use futures::task::{self, Waker};
-use futures::executor::block_on;
-
 use test::Bencher;
 
 #[bench]

futures-executor/src/enter.rs

@@ -25,15 +25,12 @@ pub struct EnterError {
 /// execute a tasks, and drop the returned [`Enter`](Enter) value after
 /// completing task execution:
 ///
-/// ```rust
-/// # extern crate futures;
-/// # use futures::executor::enter;
+/// ```
+/// use futures::executor::enter;
 ///
-/// # fn main() {
 /// let enter = enter().expect("...");
 /// /* run task */
 /// drop(enter);
-/// # }
 /// ```
 ///
 /// Doing so ensures that executors aren't

futures-executor/src/lib.rs

@@ -9,10 +9,6 @@
 
 #![doc(html_root_url = "https://rust-lang-nursery.github.io/futures-doc/0.3.0-alpha.2/futures_executor")]
 
-#[cfg(feature = "std")]
-#[macro_use]
-extern crate futures_util;
-
 macro_rules! if_std {
     ($($i:item)*) => ($(
         #[cfg(feature = "std")]
@@ -21,9 +17,6 @@ macro_rules! if_std {
 }
 
 if_std! {
-    #[macro_use]
-    extern crate lazy_static;
-
     mod local_pool;
     pub use crate::local_pool::{block_on, block_on_stream, BlockingStream, LocalPool, LocalExecutor};