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|
//! Uring file operations tests.
#![cfg(all(
tokio_unstable,
feature = "io-uring",
feature = "rt",
feature = "fs",
target_os = "linux"
))]
use futures::future::FutureExt;
use std::sync::mpsc;
use std::task::Poll;
use std::time::Duration;
use std::{future::poll_fn, path::PathBuf};
use tempfile::NamedTempFile;
use tokio::{
fs::OpenOptions,
runtime::{Builder, Runtime},
};
use tokio_util::task::TaskTracker;
fn multi_rt(n: usize) -> Box<dyn Fn() -> Runtime> {
Box::new(move || {
Builder::new_multi_thread()
.worker_threads(n)
.enable_all()
.build()
.unwrap()
})
}
fn current_rt() -> Box<dyn Fn() -> Runtime> {
Box::new(|| Builder::new_current_thread().enable_all().build().unwrap())
}
fn rt_combinations() -> Vec<Box<dyn Fn() -> Runtime>> {
vec![
current_rt(),
multi_rt(1),
multi_rt(2),
multi_rt(8),
multi_rt(64),
multi_rt(256),
]
}
#[test]
fn shutdown_runtime_while_performing_io_uring_ops() {
fn run(rt: Runtime) {
let (tx, rx) = mpsc::channel();
let (done_tx, done_rx) = mpsc::channel();
let (_tmp, path) = create_tmp_files(1);
rt.spawn(async move {
let path = path[0].clone();
// spawning a bunch of uring operations.
loop {
let path = path.clone();
tokio::spawn(async move {
let mut opt = OpenOptions::new();
opt.read(true);
opt.open(&path).await.unwrap();
});
// Avoid busy looping.
tokio::task::yield_now().await;
}
});
std::thread::spawn(move || {
let rt: Runtime = rx.recv().unwrap();
rt.shutdown_timeout(Duration::from_millis(300));
done_tx.send(()).unwrap();
});
tx.send(rt).unwrap();
done_rx.recv().unwrap();
}
for rt in rt_combinations() {
run(rt());
}
}
/*#[test]
fn open_many_files() {
fn run(rt: Runtime) {
const NUM_FILES: usize = 512;
let (_tmp_files, paths): (Vec<NamedTempFile>, Vec<PathBuf>) = create_tmp_files(NUM_FILES);
rt.block_on(async move {
let tracker = TaskTracker::new();
for i in 0..10_000 {
let path = paths.get(i % NUM_FILES).unwrap().clone();
tracker.spawn(async move {
let _file = OpenOptions::new().read(true).open(path).await.unwrap();
});
}
tracker.close();
tracker.wait().await;
});
}
for rt in rt_combinations() {
run(rt());
}
}*/
#[tokio::test]
async fn cancel_op_future() {
let (_tmp_file, path): (Vec<NamedTempFile>, Vec<PathBuf>) = create_tmp_files(1);
let (tx, mut rx) = tokio::sync::mpsc::unbounded_channel();
let handle = tokio::spawn(async move {
poll_fn(|cx| {
let opt = {
let mut opt = tokio::fs::OpenOptions::new();
opt.read(true);
opt
};
let fut = opt.open(&path[0]);
// If io_uring is enabled (and not falling back to the thread pool),
// the first poll should return Pending.
let _pending = Box::pin(fut).poll_unpin(cx);
tx.send(()).unwrap();
Poll::<()>::Pending
})
.await;
});
// Wait for the first poll
rx.recv().await.unwrap();
handle.abort();
let res = handle.await.unwrap_err();
assert!(res.is_cancelled());
}
fn create_tmp_files(num_files: usize) -> (Vec<NamedTempFile>, Vec<PathBuf>) {
let mut files = Vec::with_capacity(num_files);
for _ in 0..num_files {
let tmp = NamedTempFile::new().unwrap();
let path = tmp.path().to_path_buf();
files.push((tmp, path));
}
files.into_iter().unzip()
}
|
