atap 0.1.0

Threadsafe futureless async runtime for macOS
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

mod common;

use atap::{
    Runtime,
    sleep::{Sleep, SleepMode},
};
use common::cores;
use std::{thread, time::Duration};

/// Sleep threads with nothing to do are reaped
#[test]
fn pool_reaps_idle_sleep_threads() {
    let _ = Runtime::init();

    let handles: Vec<_> = (0..cores() * 4)
        .map(|_| {
            Runtime::task(Sleep::sleep(Duration::from_millis(200)).mode(SleepMode::Relaxed)).spawn()
        })
        .collect();

    // Read while they are all still in flight
    let peak = Runtime::pool().sleep_threads();

    for handle in handles {
        handle.join().expect("every task finishes");
    }

    // Long enough for the idle window to pass
    thread::sleep(Duration::from_millis(1500));

    let settled = Runtime::pool().sleep_threads();

    println!("{} sleep threads at peak, {} once idle", peak, settled);

    assert!(
        settled < peak,
        "sleep threads held at {} after the idle window, having peaked at {}",
        settled,
        peak,
    );
}