Sha256: d527294a2e73b53ac5faed8b316dfd1ae2a06adb31384134af21f10ce76333a5
Contents?: true
Size: 1.3 KB
Versions: 8
Compression:
Stored size: 1.3 KB
Contents
use lazy_static::lazy_static;
use once_cell::sync::Lazy;
const N_THREADS: usize = 32;
const N_ROUNDS: usize = 100_000_000;
static ONCE_CELL: Lazy<Vec<String>> = Lazy::new(|| vec!["Spica".to_string(), "Hoyten".to_string()]);
lazy_static! {
static ref LAZY_STATIC: Vec<String> = vec!["Spica".to_string(), "Hoyten".to_string()];
}
fn main() {
let once_cell = {
let start = std::time::Instant::now();
let threads = (0..N_THREADS)
.map(|_| std::thread::spawn(move || thread_once_cell()))
.collect::<Vec<_>>();
for thread in threads {
thread.join().unwrap();
}
start.elapsed()
};
let lazy_static = {
let start = std::time::Instant::now();
let threads = (0..N_THREADS)
.map(|_| std::thread::spawn(move || thread_lazy_static()))
.collect::<Vec<_>>();
for thread in threads {
thread.join().unwrap();
}
start.elapsed()
};
println!("once_cell: {:?}", once_cell);
println!("lazy_static: {:?}", lazy_static);
}
fn thread_once_cell() {
for _ in 0..N_ROUNDS {
let len = ONCE_CELL.len();
assert_eq!(len, 2)
}
}
fn thread_lazy_static() {
for _ in 0..N_ROUNDS {
let len = LAZY_STATIC.len();
assert_eq!(len, 2)
}
}
Version data entries
8 entries across 8 versions & 1 rubygems