sync-oneshot 0.1.0

A minimal oneshot channel for synchronous Rust.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145

use std::{fmt::Debug, hint::black_box};

use criterion::{Criterion, criterion_group, criterion_main};

struct WrappingSender<S>(Option<S>);
struct WrappingReceiver<R>(Option<R>);

trait Sender<T> {
    type Error;

    fn send(&mut self, val: T) -> Result<(), Self::Error>;
}

trait Receiver<T> {
    type Error;

    fn recv(&mut self) -> Result<T, Self::Error>;
}

fn bench_function<S, T, R>(mut tx: S, mut rx: R, value: T)
where
    S: Sender<T>,
    R: Receiver<T> + Send + 'static,
    T: Debug,
    <S as Sender<T>>::Error: Debug,
    <R as Receiver<T>>::Error: Debug,
{
    tx.send(black_box(value)).unwrap();
    let res = rx.recv().unwrap();
    black_box(res);
}

/*
 *
 * ===== impl sync_oneshot crate =====
 *
 */
impl<T> Sender<T> for WrappingSender<sync_oneshot::Sender<T>> {
    type Error = T;

    fn send(&mut self, val: T) -> Result<(), Self::Error> {
        let sender = self.0.take().unwrap();
        sender.send(val)
    }
}

impl<T> Receiver<T> for WrappingReceiver<sync_oneshot::Receiver<T>> {
    type Error = sync_oneshot::RecvError;

    fn recv(&mut self) -> Result<T, Self::Error> {
        let receiver = self.0.take().unwrap();
        receiver.recv()
    }
}

/*
 *
 * ===== impl oneshot crate =====
 *
 */
impl<T> Sender<T> for WrappingSender<oneshot::Sender<T>> {
    type Error = oneshot::SendError<T>;

    fn send(&mut self, val: T) -> Result<(), Self::Error> {
        let sender = self.0.take().unwrap();
        sender.send(val)
    }
}

impl<T> Receiver<T> for WrappingReceiver<oneshot::Receiver<T>> {
    type Error = oneshot::RecvError;

    fn recv(&mut self) -> Result<T, Self::Error> {
        let receiver = self.0.take().unwrap();
        receiver.recv()
    }
}

/*
 *
 * ===== impl tokio =====
 *
 */
impl<T> Sender<T> for WrappingSender<tokio::sync::oneshot::Sender<T>> {
    type Error = T;

    fn send(&mut self, val: T) -> Result<(), Self::Error> {
        let sender = self.0.take().unwrap();
        sender.send(val)
    }
}

impl<T> Receiver<T> for WrappingReceiver<tokio::sync::oneshot::Receiver<T>> {
    type Error = tokio::sync::oneshot::error::RecvError;

    fn recv(&mut self) -> Result<T, Self::Error> {
        let receiver = self.0.take().unwrap();
        receiver.blocking_recv()
    }
}

/*
 *
 *
 *===== each crate function =====
 *
 */
fn sync_oneshot(c: &mut Criterion) {
    c.bench_function("sync-oneshot-basic", |b| {
        b.iter(|| {
            let (tx, rx) = sync_oneshot::channel();
            let tx = WrappingSender(Some(tx));
            let rx = WrappingReceiver(Some(rx));

            bench_function(tx, rx, 5);
        });
    });
}

fn oneshot(c: &mut Criterion) {
    c.bench_function("oneshot-basic", |b| {
        b.iter(|| {
            let (tx, rx) = oneshot::channel();
            let tx = WrappingSender(Some(tx));
            let rx = WrappingReceiver(Some(rx));

            bench_function(tx, rx, 5);
        });
    });
}

fn tokio(c: &mut Criterion) {
    c.bench_function("tokio-basic", |b| {
        b.iter(|| {
            let (tx, rx) = tokio::sync::oneshot::channel();
            let tx = WrappingSender(Some(tx));
            let rx = WrappingReceiver(Some(rx));

            bench_function(tx, rx, 5);
        });
    });
}

criterion_group!(basic, sync_oneshot, oneshot, tokio);
criterion_main!(basic);