From a990de90fe41456a23e58bd087d2f107d321f3a1 Mon Sep 17 00:00:00 2001 From: Valentin Popov Date: Fri, 19 Jul 2024 16:37:58 +0400 Subject: Deleted vendor folder --- vendor/once_cell/examples/test_synchronization.rs | 38 ----------------------- 1 file changed, 38 deletions(-) delete mode 100644 vendor/once_cell/examples/test_synchronization.rs (limited to 'vendor/once_cell/examples/test_synchronization.rs') diff --git a/vendor/once_cell/examples/test_synchronization.rs b/vendor/once_cell/examples/test_synchronization.rs deleted file mode 100644 index 0d54f98..0000000 --- a/vendor/once_cell/examples/test_synchronization.rs +++ /dev/null @@ -1,38 +0,0 @@ -//! Test if the OnceCell properly synchronizes. -//! Needs to be run in release mode. -//! -//! We create a `Vec` with `N_ROUNDS` of `OnceCell`s. All threads will walk the `Vec`, and race to -//! be the first one to initialize a cell. -//! Every thread adds the results of the cells it sees to an accumulator, which is compared at the -//! end. -//! All threads should end up with the same result. - -use once_cell::sync::OnceCell; - -const N_THREADS: usize = 32; -const N_ROUNDS: usize = 1_000_000; - -static CELLS: OnceCell>> = OnceCell::new(); -static RESULT: OnceCell = OnceCell::new(); - -fn main() { - let start = std::time::Instant::now(); - CELLS.get_or_init(|| vec![OnceCell::new(); N_ROUNDS]); - let threads = - (0..N_THREADS).map(|i| std::thread::spawn(move || thread_main(i))).collect::>(); - for thread in threads { - thread.join().unwrap(); - } - println!("{:?}", start.elapsed()); - println!("No races detected"); -} - -fn thread_main(i: usize) { - let cells = CELLS.get().unwrap(); - let mut accum = 0; - for cell in cells.iter() { - let &value = cell.get_or_init(|| i); - accum += value; - } - assert_eq!(RESULT.get_or_init(|| accum), &accum); -} -- cgit v1.2.3