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