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Release 0.3.20 #2563

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Feb 6, 2022
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Release 0.3.20 #2563

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e780fa0
Basic `StreamExt::{flatten_unordered, flat_map_unordered}` impls (#2083)
olegnn Feb 6, 2022
525aa37
Redefine executor and compat modules in futures crate (#2564)
taiki-e Feb 6, 2022
353a627
Release 0.3.20
taiki-e Feb 6, 2022
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6 changes: 6 additions & 0 deletions CHANGELOG.md
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# 0.3.20 - 2022-02-06

* Fix stacked borrows violations when `-Zmiri-tag-raw-pointers` is enabled. This raises MSRV of `futures-task` to 1.45. (#2548, #2550)
* Change `FuturesUnordered` to respect yielding from future (#2551)
* Add `StreamExt::{flatten_unordered, flat_map_unordered}` (#2083)

# 0.3.19 - 2021-12-18

* Remove unstable `read-initializer` feature (#2534)
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6 changes: 3 additions & 3 deletions futures-channel/Cargo.toml
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@@ -1,6 +1,6 @@
[package]
name = "futures-channel"
version = "0.3.19"
version = "0.3.20"
edition = "2018"
rust-version = "1.45"
license = "MIT OR Apache-2.0"
Expand All @@ -22,8 +22,8 @@ unstable = []
cfg-target-has-atomic = []

[dependencies]
futures-core = { path = "../futures-core", version = "0.3.19", default-features = false }
futures-sink = { path = "../futures-sink", version = "0.3.19", default-features = false, optional = true }
futures-core = { path = "../futures-core", version = "0.3.20", default-features = false }
futures-sink = { path = "../futures-sink", version = "0.3.20", default-features = false, optional = true }

[dev-dependencies]
futures = { path = "../futures", default-features = true }
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2 changes: 1 addition & 1 deletion futures-core/Cargo.toml
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[package]
name = "futures-core"
version = "0.3.19"
version = "0.3.20"
edition = "2018"
rust-version = "1.36"
license = "MIT OR Apache-2.0"
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8 changes: 4 additions & 4 deletions futures-executor/Cargo.toml
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[package]
name = "futures-executor"
version = "0.3.19"
version = "0.3.20"
edition = "2018"
rust-version = "1.45"
license = "MIT OR Apache-2.0"
Expand All @@ -16,9 +16,9 @@ std = ["futures-core/std", "futures-task/std", "futures-util/std"]
thread-pool = ["std", "num_cpus"]

[dependencies]
futures-core = { path = "../futures-core", version = "0.3.19", default-features = false }
futures-task = { path = "../futures-task", version = "0.3.19", default-features = false }
futures-util = { path = "../futures-util", version = "0.3.19", default-features = false }
futures-core = { path = "../futures-core", version = "0.3.20", default-features = false }
futures-task = { path = "../futures-task", version = "0.3.20", default-features = false }
futures-util = { path = "../futures-util", version = "0.3.20", default-features = false }
num_cpus = { version = "1.8.0", optional = true }

[dev-dependencies]
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2 changes: 1 addition & 1 deletion futures-io/Cargo.toml
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@@ -1,6 +1,6 @@
[package]
name = "futures-io"
version = "0.3.19"
version = "0.3.20"
edition = "2018"
rust-version = "1.36"
license = "MIT OR Apache-2.0"
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2 changes: 1 addition & 1 deletion futures-macro/Cargo.toml
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@@ -1,6 +1,6 @@
[package]
name = "futures-macro"
version = "0.3.19"
version = "0.3.20"
edition = "2018"
rust-version = "1.45"
license = "MIT OR Apache-2.0"
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2 changes: 1 addition & 1 deletion futures-sink/Cargo.toml
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@@ -1,6 +1,6 @@
[package]
name = "futures-sink"
version = "0.3.19"
version = "0.3.20"
edition = "2018"
rust-version = "1.36"
license = "MIT OR Apache-2.0"
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4 changes: 2 additions & 2 deletions futures-task/Cargo.toml
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@@ -1,8 +1,8 @@
[package]
name = "futures-task"
version = "0.3.19"
version = "0.3.20"
edition = "2018"
rust-version = "1.36"
rust-version = "1.45"
license = "MIT OR Apache-2.0"
repository = "https://github.com/rust-lang/futures-rs"
homepage = "https://rust-lang.github.io/futures-rs"
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16 changes: 8 additions & 8 deletions futures-test/Cargo.toml
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@@ -1,6 +1,6 @@
[package]
name = "futures-test"
version = "0.3.19"
version = "0.3.20"
edition = "2018"
rust-version = "1.45"
license = "MIT OR Apache-2.0"
Expand All @@ -11,13 +11,13 @@ Common utilities for testing components built off futures-rs.
"""

[dependencies]
futures-core = { version = "0.3.19", path = "../futures-core", default-features = false }
futures-task = { version = "0.3.19", path = "../futures-task", default-features = false }
futures-io = { version = "0.3.19", path = "../futures-io", default-features = false }
futures-util = { version = "0.3.19", path = "../futures-util", default-features = false }
futures-executor = { version = "0.3.19", path = "../futures-executor", default-features = false }
futures-sink = { version = "0.3.19", path = "../futures-sink", default-features = false }
futures-macro = { version = "=0.3.19", path = "../futures-macro", default-features = false }
futures-core = { version = "0.3.20", path = "../futures-core", default-features = false }
futures-task = { version = "0.3.20", path = "../futures-task", default-features = false }
futures-io = { version = "0.3.20", path = "../futures-io", default-features = false }
futures-util = { version = "0.3.20", path = "../futures-util", default-features = false }
futures-executor = { version = "0.3.20", path = "../futures-executor", default-features = false }
futures-sink = { version = "0.3.20", path = "../futures-sink", default-features = false }
futures-macro = { version = "=0.3.20", path = "../futures-macro", default-features = false }
pin-utils = { version = "0.1.0", default-features = false }
pin-project = "1.0.1"

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14 changes: 7 additions & 7 deletions futures-util/Cargo.toml
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@@ -1,6 +1,6 @@
[package]
name = "futures-util"
version = "0.3.19"
version = "0.3.20"
edition = "2018"
rust-version = "1.45"
license = "MIT OR Apache-2.0"
Expand Down Expand Up @@ -34,12 +34,12 @@ write-all-vectored = ["io"]
cfg-target-has-atomic = []

[dependencies]
futures-core = { path = "../futures-core", version = "0.3.19", default-features = false }
futures-task = { path = "../futures-task", version = "0.3.19", default-features = false }
futures-channel = { path = "../futures-channel", version = "0.3.19", default-features = false, features = ["std"], optional = true }
futures-io = { path = "../futures-io", version = "0.3.19", default-features = false, features = ["std"], optional = true }
futures-sink = { path = "../futures-sink", version = "0.3.19", default-features = false, optional = true }
futures-macro = { path = "../futures-macro", version = "=0.3.19", default-features = false, optional = true }
futures-core = { path = "../futures-core", version = "0.3.20", default-features = false }
futures-task = { path = "../futures-task", version = "0.3.20", default-features = false }
futures-channel = { path = "../futures-channel", version = "0.3.20", default-features = false, features = ["std"], optional = true }
futures-io = { path = "../futures-io", version = "0.3.20", default-features = false, features = ["std"], optional = true }
futures-sink = { path = "../futures-sink", version = "0.3.20", default-features = false, optional = true }
futures-macro = { path = "../futures-macro", version = "=0.3.20", default-features = false, optional = true }
slab = { version = "0.4.2", optional = true }
memchr = { version = "2.2", optional = true }
futures_01 = { version = "0.1.25", optional = true, package = "futures" }
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66 changes: 66 additions & 0 deletions futures-util/benches/flatten_unordered.rs
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#![feature(test)]

extern crate test;
use crate::test::Bencher;

use futures::channel::oneshot;
use futures::executor::block_on;
use futures::future::{self, FutureExt};
use futures::stream::{self, StreamExt};
use futures::task::Poll;
use std::collections::VecDeque;
use std::thread;

#[bench]
fn oneshot_streams(b: &mut Bencher) {
const STREAM_COUNT: usize = 10_000;
const STREAM_ITEM_COUNT: usize = 1;

b.iter(|| {
let mut txs = VecDeque::with_capacity(STREAM_COUNT);
let mut rxs = Vec::new();

for _ in 0..STREAM_COUNT {
let (tx, rx) = oneshot::channel();
txs.push_back(tx);
rxs.push(rx);
}

thread::spawn(move || {
let mut last = 1;
while let Some(tx) = txs.pop_front() {
let _ = tx.send(stream::iter(last..last + STREAM_ITEM_COUNT));
last += STREAM_ITEM_COUNT;
}
});

let mut flatten = stream::unfold(rxs.into_iter(), |mut vals| {
async {
if let Some(next) = vals.next() {
let val = next.await.unwrap();
Some((val, vals))
} else {
None
}
}
.boxed()
})
.flatten_unordered(None);

block_on(future::poll_fn(move |cx| {
let mut count = 0;
loop {
match flatten.poll_next_unpin(cx) {
Poll::Ready(None) => break,
Poll::Ready(Some(_)) => {
count += 1;
}
_ => {}
}
}
assert_eq!(count, STREAM_COUNT * STREAM_ITEM_COUNT);

Poll::Ready(())
}))
});
}
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