diff options
Diffstat (limited to 'vendor/once_cell/examples/bench.rs')
-rw-r--r-- | vendor/once_cell/examples/bench.rs | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/vendor/once_cell/examples/bench.rs b/vendor/once_cell/examples/bench.rs deleted file mode 100644 index e680125..0000000 --- a/vendor/once_cell/examples/bench.rs +++ /dev/null @@ -1,28 +0,0 @@ -use std::mem::size_of; - -use once_cell::sync::OnceCell; - -const N_THREADS: usize = 32; -const N_ROUNDS: usize = 100_000_000; - -static CELL: OnceCell<usize> = OnceCell::new(); - -fn main() { - let start = std::time::Instant::now(); - let threads = - (0..N_THREADS).map(|i| std::thread::spawn(move || thread_main(i))).collect::<Vec<_>>(); - for thread in threads { - thread.join().unwrap(); - } - println!("{:?}", start.elapsed()); - println!("size_of::<OnceCell<()>>() = {:?}", size_of::<OnceCell<()>>()); - println!("size_of::<OnceCell<bool>>() = {:?}", size_of::<OnceCell<bool>>()); - println!("size_of::<OnceCell<u32>>() = {:?}", size_of::<OnceCell<u32>>()); -} - -fn thread_main(i: usize) { - for _ in 0..N_ROUNDS { - let &value = CELL.get_or_init(|| i); - assert!(value < N_THREADS) - } -} |