56 lines
1.4 KiB
Rust
56 lines
1.4 KiB
Rust
use std::time::Duration;
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use tracing_subscriber::{fmt, prelude::*, EnvFilter};
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fn main() {
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tracing_subscriber::registry()
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.with(fmt::layer())
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.with(EnvFilter::from_default_env())
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.init();
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let pool = async_cpupool::CpuPool::configure()
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.min_threads(1)
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.max_threads(10)
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.buffer_multiplier(8)
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.build()
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.expect("Valid configuration");
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smol::block_on(async {
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// scale up
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let tasks: Vec<_> = (0..30)
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.map(|i| {
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let pool = pool.clone();
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smol::spawn(async move {
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tracing::info!("Spawning");
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let out = pool
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.spawn(move || {
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std::thread::sleep(Duration::from_millis(400));
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i
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})
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.await;
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pool.close().await;
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out
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})
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})
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.collect();
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for task in tasks {
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let i = task.await.expect("Got value");
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tracing::info!("Awaited {i}");
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}
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// ramp down
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for _ in 0..10 {
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pool.spawn(move || {
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std::thread::sleep(Duration::from_millis(400));
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})
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.await
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.expect("Got value");
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}
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assert!(pool.close().await);
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})
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}
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