81 lines
2.4 KiB
Rust
81 lines
2.4 KiB
Rust
use std::cell::{Cell, RefCell};
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use std::sync::{Arc, Mutex};
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use std::thread;
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use std::time::Duration;
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#[test]
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#[cfg_attr(any(target_os = "emscripten", target_os = "wasi"), ignore)] // no threads
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#[cfg_attr(miri, ignore)] // Miri does not like the thread leak
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fn sleep_very_long() {
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let finished = Arc::new(Mutex::new(false));
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let t_finished = finished.clone();
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thread::spawn(move || {
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thread::sleep(Duration::new(u64::MAX, 0));
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*t_finished.lock().unwrap() = true;
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});
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thread::sleep(Duration::from_millis(100));
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assert_eq!(*finished.lock().unwrap(), false);
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}
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#[test]
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fn thread_local_containing_const_statements() {
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// This exercises the `const $init:block` cases of the thread_local macro.
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// Despite overlapping with expression syntax, the `const { ... }` is not
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// parsed as `$init:expr`.
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thread_local! {
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static CELL: Cell<u32> = const {
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let value = 1;
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Cell::new(value)
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};
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static REFCELL: RefCell<u32> = const {
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let value = 1;
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RefCell::new(value)
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};
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}
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assert_eq!(CELL.get(), 1);
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assert_eq!(REFCELL.take(), 1);
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}
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#[test]
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fn thread_local_hygeiene() {
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// Previously `thread_local_inner!` had use imports for `LocalKey`, `Storage`, `EagerStorage`
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// and `LazyStorage`. The use imports will shadow a user-provided type or type alias if the
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// user-provided type or type alias has the same name. Make sure that this does not happen. See
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// <https://github.com/rust-lang/rust/issues/131863>.
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//
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// NOTE: if the internal implementation details change (i.e. get renamed), this test should be
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// updated.
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#![allow(dead_code)]
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type LocalKey = ();
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type Storage = ();
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type LazyStorage = ();
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type EagerStorage = ();
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thread_local! {
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static A: LocalKey = const { () };
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static B: Storage = const { () };
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static C: LazyStorage = const { () };
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static D: EagerStorage = const { () };
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}
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}
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#[test]
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// Include an ignore list on purpose, so that new platforms don't miss it
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#[cfg_attr(
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any(
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target_os = "redox",
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target_os = "l4re",
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target_env = "sgx",
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target_os = "solid_asp3",
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target_os = "teeos",
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target_os = "wasi"
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),
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should_panic
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)]
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fn available_parallelism() {
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// check that std::thread::available_parallelism() returns a valid value
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assert!(thread::available_parallelism().is_ok());
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}
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