From 1b6a04ca5504955c571d1c97504fb45ea0befee4 Mon Sep 17 00:00:00 2001
From: Valentin Popov <valentin@popov.link>
Date: Mon, 8 Jan 2024 01:21:28 +0400
Subject: Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>
---
 vendor/flume/benches/basic.rs | 474 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 474 insertions(+)
 create mode 100644 vendor/flume/benches/basic.rs

(limited to 'vendor/flume/benches/basic.rs')

diff --git a/vendor/flume/benches/basic.rs b/vendor/flume/benches/basic.rs
new file mode 100644
index 0000000..bbc4fc2
--- /dev/null
+++ b/vendor/flume/benches/basic.rs
@@ -0,0 +1,474 @@
+#[macro_use]
+extern crate criterion;
+
+use std::{
+    sync::mpsc,
+    thread,
+    fmt::Debug,
+};
+use criterion::{Criterion, Bencher, black_box};
+use std::time::Instant;
+
+trait Sender: Clone + Send + Sized + 'static {
+    type Item: Debug + Default;
+    type BoundedSender: Sender<Item=Self::Item>;
+    type Receiver: Receiver<Item=Self::Item>;
+
+    fn unbounded() -> (Self, Self::Receiver);
+    fn bounded(n: usize) -> (Self::BoundedSender, Self::Receiver);
+    fn send(&self, msg: Self::Item);
+}
+
+trait Receiver: Send + Sized + 'static {
+    type Item: Default;
+    fn recv(&self) -> Self::Item;
+    fn iter(&self) -> Box<dyn Iterator<Item=Self::Item> + '_>;
+}
+
+impl<T: Send + Debug + Default + 'static> Sender for flume::Sender<T> {
+    type Item = T;
+    type BoundedSender = Self;
+    type Receiver = flume::Receiver<T>;
+
+    fn unbounded() -> (Self, Self::Receiver) {
+        flume::unbounded()
+    }
+
+    fn bounded(n: usize) -> (Self::BoundedSender, Self::Receiver) {
+        flume::bounded(n)
+    }
+
+    fn send(&self, msg: T) {
+        flume::Sender::send(self, msg).unwrap();
+    }
+}
+
+impl<T: Send + Default + 'static> Receiver for flume::Receiver<T> {
+    type Item = T;
+
+    fn recv(&self) -> Self::Item {
+        flume::Receiver::recv(self).unwrap()
+    }
+
+    fn iter(&self) -> Box<dyn Iterator<Item=T> + '_> {
+        Box::new(std::iter::from_fn(move || flume::Receiver::recv(self).ok()))
+    }
+}
+
+impl<T: Send + Debug + Default + 'static> Sender for crossbeam_channel::Sender<T> {
+    type Item = T;
+    type BoundedSender = Self;
+    type Receiver = crossbeam_channel::Receiver<T>;
+
+    fn unbounded() -> (Self, Self::Receiver) {
+        crossbeam_channel::unbounded()
+    }
+
+    fn bounded(n: usize) -> (Self::BoundedSender, Self::Receiver) {
+        crossbeam_channel::bounded(n)
+    }
+
+    fn send(&self, msg: T) {
+        crossbeam_channel::Sender::send(self, msg).unwrap();
+    }
+}
+
+impl<T: Send + Default + 'static> Receiver for crossbeam_channel::Receiver<T> {
+    type Item = T;
+
+    fn recv(&self) -> Self::Item {
+        crossbeam_channel::Receiver::recv(self).unwrap()
+    }
+
+    fn iter(&self) -> Box<dyn Iterator<Item=T> + '_> {
+        Box::new(crossbeam_channel::Receiver::iter(self))
+    }
+}
+
+impl<T: Send + Debug + Default + 'static> Sender for mpsc::Sender<T> {
+    type Item = T;
+    type BoundedSender = mpsc::SyncSender<T>;
+    type Receiver = mpsc::Receiver<T>;
+
+    fn unbounded() -> (Self, Self::Receiver) {
+        mpsc::channel()
+    }
+
+    fn bounded(n: usize) -> (Self::BoundedSender, Self::Receiver) {
+        mpsc::sync_channel(n)
+    }
+
+    fn send(&self, msg: T) {
+        mpsc::Sender::send(self, msg).unwrap();
+    }
+}
+
+impl<T: Send + Debug + Default + 'static> Sender for mpsc::SyncSender<T> {
+    type Item = T;
+    type BoundedSender = Self;
+    type Receiver = mpsc::Receiver<T>;
+
+    fn unbounded() -> (Self, Self::Receiver) { unimplemented!() }
+    fn bounded(_: usize) -> (Self::BoundedSender, Self::Receiver) { unimplemented!() }
+
+    fn send(&self, msg: T) {
+        mpsc::SyncSender::send(self, msg).unwrap();
+    }
+}
+
+impl<T: Send + Default + 'static> Receiver for mpsc::Receiver<T> {
+    type Item = T;
+
+    fn recv(&self) -> Self::Item {
+        mpsc::Receiver::recv(self).unwrap()
+    }
+
+    fn iter(&self) -> Box<dyn Iterator<Item=T> + '_> {
+        Box::new(mpsc::Receiver::iter(self))
+    }
+}
+
+fn test_create<S: Sender>(b: &mut Bencher) {
+    b.iter(|| S::unbounded());
+}
+
+fn test_oneshot<S: Sender>(b: &mut Bencher) {
+    b.iter(|| {
+        let (tx, rx) = S::unbounded();
+        tx.send(Default::default());
+        black_box(rx.recv());
+    });
+}
+
+fn test_inout<S: Sender>(b: &mut Bencher) {
+    let (tx, rx) = S::unbounded();
+    b.iter(|| {
+        tx.send(Default::default());
+        black_box(rx.recv());
+    });
+}
+
+fn test_hydra<S: Sender>(b: &mut Bencher, thread_num: usize, msg_num: usize) {
+    let (main_tx, main_rx) = S::unbounded();
+
+    let mut txs = Vec::new();
+    for _ in 0..thread_num {
+        let main_tx = main_tx.clone();
+        let (tx, rx) = S::unbounded();
+        txs.push(tx);
+
+        thread::spawn(move || {
+            for msg in rx.iter() {
+                main_tx.send(msg);
+            }
+        });
+    }
+
+    drop(main_tx);
+
+    b.iter(|| {
+        for tx in &txs {
+            for _ in 0..msg_num {
+                tx.send(Default::default());
+            }
+        }
+
+        for _ in 0..thread_num {
+            for _ in 0..msg_num {
+                black_box(main_rx.recv());
+            }
+        }
+    });
+}
+
+fn test_kitsune<S: Sender>(b: &mut Bencher, thread_num: usize, msg_num: usize)
+    where S::Receiver: Clone
+{
+    let (out_tx, out_rx) = S::unbounded();
+    let (in_tx, in_rx) = S::unbounded();
+
+    for _ in 0..thread_num {
+        let in_tx = in_tx.clone();
+        let out_rx = out_rx.clone();
+
+        thread::spawn(move || {
+            for msg in out_rx.iter() {
+                in_tx.send(msg);
+            }
+        });
+    }
+
+    b.iter(|| {
+        for _ in 0..thread_num {
+            for _ in 0..msg_num {
+                out_tx.send(Default::default());
+            }
+        }
+
+        for _ in 0..thread_num {
+            for _ in 0..msg_num {
+                black_box(in_rx.recv());
+            }
+        }
+    });
+}
+
+fn test_robin_u<S: Sender>(b: &mut Bencher, thread_num: usize, msg_num: usize) {
+    let (mut main_tx, main_rx) = S::unbounded();
+
+    for _ in 0..thread_num {
+        let (mut tx, rx) = S::unbounded();
+        std::mem::swap(&mut tx, &mut main_tx);
+
+        thread::spawn(move || {
+            for msg in rx.iter() {
+                tx.send(msg);
+            }
+        });
+    }
+
+    b.iter(|| {
+        for _ in 0..msg_num {
+            main_tx.send(Default::default());
+        }
+
+        for _ in 0..msg_num {
+            black_box(main_rx.recv());
+        }
+    });
+}
+
+fn test_robin_b<S: Sender>(b: &mut Bencher, thread_num: usize, msg_num: usize) {
+    let (mut main_tx, main_rx) = S::bounded(1);
+
+    for _ in 0..thread_num {
+        let (mut tx, rx) = S::bounded(1);
+        std::mem::swap(&mut tx, &mut main_tx);
+
+        thread::spawn(move || {
+            for msg in rx.iter() {
+                tx.send(msg);
+            }
+        });
+    }
+
+    b.iter(|| {
+        let main_tx = main_tx.clone();
+        thread::spawn(move || {
+            for _ in 0..msg_num {
+                main_tx.send(Default::default());
+            }
+        });
+
+        for _ in 0..msg_num {
+            black_box(main_rx.recv());
+        }
+    });
+}
+
+fn test_mpsc_bounded_no_wait<S: Sender>(b: &mut Bencher, thread_num: u64) {
+    b.iter_custom(|iters| {
+        let iters = iters * 1000;
+        let (tx, rx) = S::bounded(iters as usize);
+        let start = Instant::now();
+
+        crossbeam_utils::thread::scope(|scope| {
+            for _ in 0..thread_num {
+                let tx = tx.clone();
+                scope.spawn(move |_| {
+                    for _ in 0..iters / thread_num {
+                        tx.send(Default::default());
+                    }
+                });
+            }
+
+            for _ in 0..iters - ((iters / thread_num) * thread_num) {
+                tx.send(Default::default());
+            }
+
+            for _ in 0..iters {
+                black_box(rx.recv());
+            }
+        })
+            .unwrap();
+
+        start.elapsed()
+    })
+}
+
+fn test_mpsc_bounded<S: Sender>(b: &mut Bencher, bound: usize, thread_num: usize) {
+    b.iter_custom(|iters| {
+        let (tx, rx) = S::bounded(bound);
+        let start = Instant::now();
+
+        crossbeam_utils::thread::scope(|scope| {
+            let msgs = iters as usize * bound.max(1);
+
+            for _ in 0..thread_num {
+                let tx = tx.clone();
+                scope.spawn(move |_| {
+                    for _ in 0..msgs / thread_num as usize {
+                        tx.send(Default::default());
+                    }
+                });
+            }
+
+            scope.spawn(move |_| {
+                // Remainder
+                for _ in 0..msgs - (msgs / thread_num as usize * thread_num)  {
+                    tx.send(Default::default());
+                }
+            });
+
+            for _ in 0..msgs {
+                black_box(rx.recv());
+            }
+        })
+            .unwrap();
+
+        start.elapsed()
+    })
+}
+
+fn create(b: &mut Criterion) {
+    b.bench_function("create-flume", |b| test_create::<flume::Sender<u32>>(b));
+    b.bench_function("create-crossbeam", |b| test_create::<crossbeam_channel::Sender<u32>>(b));
+    b.bench_function("create-std", |b| test_create::<mpsc::Sender<u32>>(b));
+}
+
+fn oneshot(b: &mut Criterion) {
+    b.bench_function("oneshot-flume", |b| test_oneshot::<flume::Sender<u32>>(b));
+    b.bench_function("oneshot-crossbeam", |b| test_oneshot::<crossbeam_channel::Sender<u32>>(b));
+    b.bench_function("oneshot-std", |b| test_oneshot::<mpsc::Sender<u32>>(b));
+}
+
+fn inout(b: &mut Criterion) {
+    b.bench_function("inout-flume", |b| test_inout::<flume::Sender<u32>>(b));
+    b.bench_function("inout-crossbeam", |b| test_inout::<crossbeam_channel::Sender<u32>>(b));
+    b.bench_function("inout-std", |b| test_inout::<mpsc::Sender<u32>>(b));
+}
+
+fn hydra_32t_1m(b: &mut Criterion) {
+    b.bench_function("hydra-32t-1m-flume", |b| test_hydra::<flume::Sender<u32>>(b, 32, 1));
+    b.bench_function("hydra-32t-1m-crossbeam", |b| test_hydra::<crossbeam_channel::Sender<u32>>(b, 32, 1));
+    b.bench_function("hydra-32t-1m-std", |b| test_hydra::<mpsc::Sender<u32>>(b, 32, 1));
+}
+
+fn hydra_32t_1000m(b: &mut Criterion) {
+    b.bench_function("hydra-32t-1000m-flume", |b| test_hydra::<flume::Sender<u32>>(b, 32, 1000));
+    b.bench_function("hydra-32t-1000m-crossbeam", |b| test_hydra::<crossbeam_channel::Sender<u32>>(b, 32, 1000));
+    b.bench_function("hydra-32t-1000m-std", |b| test_hydra::<mpsc::Sender<u32>>(b, 32, 1000));
+}
+
+fn hydra_256t_1m(b: &mut Criterion) {
+    b.bench_function("hydra-256t-1m-flume", |b| test_hydra::<flume::Sender<u32>>(b, 256, 1));
+    b.bench_function("hydra-256t-1m-crossbeam", |b| test_hydra::<crossbeam_channel::Sender<u32>>(b, 256, 1));
+    b.bench_function("hydra-256t-1m-std", |b| test_hydra::<mpsc::Sender<u32>>(b, 256, 1));
+}
+
+fn hydra_1t_1000m(b: &mut Criterion) {
+    b.bench_function("hydra-1t-1000m-flume", |b| test_hydra::<flume::Sender<u32>>(b, 1, 1000));
+    b.bench_function("hydra-1t-1000m-crossbeam", |b| test_hydra::<crossbeam_channel::Sender<u32>>(b, 1, 1000));
+    b.bench_function("hydra-1t-1000m-std", |b| test_hydra::<mpsc::Sender<u32>>(b, 1, 1000));
+}
+
+fn hydra_4t_10000m(b: &mut Criterion) {
+    b.bench_function("hydra-4t-10000m-flume", |b| test_hydra::<flume::Sender<u32>>(b, 4, 10000));
+    b.bench_function("hydra-4t-10000m-crossbeam", |b| test_hydra::<crossbeam_channel::Sender<u32>>(b, 4, 10000));
+    b.bench_function("hydra-4t-10000m-std", |b| test_hydra::<mpsc::Sender<u32>>(b, 4, 10000));
+}
+
+fn kitsune_32t_1m(b: &mut Criterion) {
+    b.bench_function("kitsune-32t-1m-flume", |b| test_kitsune::<flume::Sender<u32>>(b, 32, 1));
+    b.bench_function("kitsune-32t-1m-crossbeam", |b| test_kitsune::<crossbeam_channel::Sender<u32>>(b, 32, 1));
+    //b.bench_function("kitsune-32t-1m-std", |b| test_kitsune::<mpsc::Sender<u32>>(b, 32, 1));
+}
+
+fn kitsune_32t_1000m(b: &mut Criterion) {
+    b.bench_function("kitsune-32t-1000m-flume", |b| test_kitsune::<flume::Sender<u32>>(b, 32, 1000));
+    b.bench_function("kitsune-32t-1000m-crossbeam", |b| test_kitsune::<crossbeam_channel::Sender<u32>>(b, 32, 1000));
+    //b.bench_function("kitsune-32t-1000m-std", |b| test_kitsune::<mpsc::Sender<u32>>(b, 32, 1000));
+}
+
+fn kitsune_256t_1m(b: &mut Criterion) {
+    b.bench_function("kitsune-256t-1m-flume", |b| test_kitsune::<flume::Sender<u32>>(b, 256, 1));
+    b.bench_function("kitsune-256t-1m-crossbeam", |b| test_kitsune::<crossbeam_channel::Sender<u32>>(b, 256, 1));
+    //b.bench_function("kitsune-256t-1m-std", |b| test_kitsune::<mpsc::Sender<u32>>(b, 256, 1));
+}
+
+fn kitsune_1t_1000m(b: &mut Criterion) {
+    b.bench_function("kitsune-1t-1000m-flume", |b| test_kitsune::<flume::Sender<u32>>(b, 1, 1000));
+    b.bench_function("kitsune-1t-1000m-crossbeam", |b| test_kitsune::<crossbeam_channel::Sender<u32>>(b, 1, 1000));
+    //b.bench_function("kitsune-1t-1000m-std", |b| test_kitsune::<mpsc::Sender<u32>>(b, 1, 1000));
+}
+
+fn kitsune_4t_10000m(b: &mut Criterion) {
+    b.bench_function("kitsune-4t-10000m-flume", |b| test_kitsune::<flume::Sender<u32>>(b, 4, 10000));
+    b.bench_function("kitsune-4t-10000m-crossbeam", |b| test_kitsune::<crossbeam_channel::Sender<u32>>(b, 4, 10000));
+    //b.bench_function("kitsune-4t-10000m-std", |b| test_kitsune::<mpsc::Sender<u32>>(b, 4, 10000));
+}
+
+fn robin_u_32t_1m(b: &mut Criterion) {
+    b.bench_function("robin-u-32t-1m-flume", |b| test_robin_u::<flume::Sender<u32>>(b, 32, 1));
+    b.bench_function("robin-u-32t-1m-crossbeam", |b| test_robin_u::<crossbeam_channel::Sender<u32>>(b, 32, 1));
+    b.bench_function("robin-u-32t-1m-std", |b| test_robin_u::<mpsc::Sender<u32>>(b, 32, 1));
+}
+
+fn robin_u_4t_1000m(b: &mut Criterion) {
+    b.bench_function("robin-u-4t-1000m-flume", |b| test_robin_u::<flume::Sender<u32>>(b, 4, 1000));
+    b.bench_function("robin-u-4t-1000m-crossbeam", |b| test_robin_u::<crossbeam_channel::Sender<u32>>(b, 4, 1000));
+    b.bench_function("robin-u-4t-1000m-std", |b| test_robin_u::<mpsc::Sender<u32>>(b, 4, 1000));
+}
+
+fn robin_b_32t_16m(b: &mut Criterion) {
+    b.bench_function("robin-b-32t-16m-flume", |b| test_robin_b::<flume::Sender<u32>>(b, 32, 16));
+    b.bench_function("robin-b-32t-16m-crossbeam", |b| test_robin_b::<crossbeam_channel::Sender<u32>>(b, 32, 16));
+    b.bench_function("robin-b-32t-16m-std", |b| test_robin_b::<mpsc::Sender<u32>>(b, 32, 16));
+}
+
+fn robin_b_4t_1000m(b: &mut Criterion) {
+    b.bench_function("robin-b-4t-1000m-flume", |b| test_robin_b::<flume::Sender<u32>>(b, 4, 1000));
+    b.bench_function("robin-b-4t-1000m-crossbeam", |b| test_robin_b::<crossbeam_channel::Sender<u32>>(b, 4, 1000));
+    b.bench_function("robin-b-4t-1000m-std", |b| test_robin_b::<mpsc::Sender<u32>>(b, 4, 1000));
+}
+
+fn mpsc_bounded_no_wait_4t(b: &mut Criterion) {
+    b.bench_function("mpsc-bounded-no-wait-4t-flume", |b| test_mpsc_bounded_no_wait::<flume::Sender<u32>>(b, 4));
+    b.bench_function("mpsc-bounded-no-wait-4t-crossbeam", |b| test_mpsc_bounded_no_wait::<crossbeam_channel::Sender<u32>>(b, 4));
+    b.bench_function("mpsc-bounded-no-wait-4t-std", |b| test_mpsc_bounded_no_wait::<mpsc::Sender<u32>>(b, 4));
+}
+
+fn mpsc_bounded_4t(b: &mut Criterion) {
+    for bound in &[0, 1, 10, 50, 10_000] {
+        let text = format!("mpsc-bounded-small-4t-{}m-", bound);
+        let bound = *bound;
+
+        b.bench_function(&format!("{}{}", text, "flume"), |b| test_mpsc_bounded::<flume::Sender<u32>>(b, bound, 4));
+        b.bench_function(&format!("{}{}", text, "crossbeam"), |b| test_mpsc_bounded::<crossbeam_channel::Sender<u32>>(b, bound, 4));
+        b.bench_function(&format!("{}{}", text, "std"), |b| test_mpsc_bounded::<mpsc::Sender<u32>>(b, bound, 4));
+    }
+}
+
+criterion_group!(
+    compare,
+    create,
+    oneshot,
+    inout,
+    hydra_32t_1m,
+    hydra_32t_1000m,
+    hydra_256t_1m,
+    hydra_1t_1000m,
+    hydra_4t_10000m,
+    robin_b_32t_16m,
+    robin_b_4t_1000m,
+    robin_u_32t_1m,
+    robin_u_4t_1000m,
+    mpsc_bounded_no_wait_4t,
+    mpsc_bounded_4t,
+    kitsune_32t_1m,
+    kitsune_32t_1000m,
+    kitsune_256t_1m,
+    kitsune_1t_1000m,
+    kitsune_4t_10000m,
+);
+criterion_main!(compare);
-- 
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