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//@ ignore-windows
// This test attempts to make sure that running `remove_dir_all`
// doesn't result in a NotFound error if one of the files it
// is deleting is deleted concurrently.
//
// The windows implementation for `remove_dir_all` is significantly
// more complicated, and has not yet been brought up to par with
// the implementation on other platforms, so this test is marked as
// `ignore-windows` until someone more experienced with windows can
// sort that out.
use std::fs::remove_dir_all;
use std::path::Path;
use std::thread;
use std::time::Duration;
use run_make_support::rfs::{create_dir, write};
use run_make_support::run_in_tmpdir;
fn main() {
let mut race_happened = false;
run_in_tmpdir(|| {
for i in 0..150 {
create_dir("outer");
create_dir("outer/inner");
write("outer/inner.txt", b"sometext");
thread::scope(|scope| {
scope.spawn(|| {
thread::sleep(Duration::from_nanos(i));
remove_dir_all("outer").unwrap();
});
scope.spawn(|| {
let r1 = remove_dir_all("outer/inner");
let r2 = remove_dir_all("outer/inner.txt");
if r1.is_ok() && r2.is_err() {
race_happened = true;
}
});
});
assert!(!Path::new("outer").exists());
// trying to remove a nonexistent top-level directory should
// still result in an error.
let Err(err) = remove_dir_all("outer") else {
panic!("removing nonexistent dir did not result in an error");
};
assert_eq!(err.kind(), std::io::ErrorKind::NotFound);
}
});
if !race_happened {
eprintln!(
"WARNING: multithreaded deletion never raced, \
try increasing the number of attempts or \
adjusting the sleep timing"
);
}
}
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