-
-
Save divi255/a464b1024e06aa9f85578137f33acf20 to your computer and use it in GitHub Desktop.
Test Rust shared resource guards
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #[macro_use] | |
| extern crate lazy_static; | |
| use std::cell::RefCell; | |
| use std::sync::atomic::{AtomicU64, Ordering}; | |
| use std::time::Instant; | |
| use tokio::sync::Mutex; | |
| use tokio::sync::RwLock; | |
| static X: AtomicU64 = AtomicU64::new(0); | |
| lazy_static! { | |
| static ref X_MUTEX: Mutex<u64> = Mutex::new(0); | |
| static ref X_RWLOCK: RwLock<u64> = RwLock::new(0); | |
| static ref S_MUTEX: std::sync::Mutex<u64> = std::sync::Mutex::new(0); | |
| static ref S_RWLOCK: std::sync::RwLock<u64> = std::sync::RwLock::new(0); | |
| } | |
| thread_local! { | |
| static S_CELL: RefCell<u64> = RefCell::new(0); | |
| } | |
| macro_rules! print_stat { | |
| ($title: expr, $duration: expr) => { | |
| println!( | |
| "{} spent: {} sec", | |
| $title, | |
| $duration.as_nanos() as f64 / 1000_000_000.0 | |
| ); | |
| }; | |
| } | |
| #[tokio::main] | |
| async fn main() -> Result<(), Box<dyn std::error::Error>> { | |
| let mut c = 0; | |
| for mutable in 0..2 { | |
| let n = 100_000_000; | |
| if mutable == 0 { | |
| println!("WRITE"); | |
| } else { | |
| println!("READ"); | |
| } | |
| // local | |
| let start = Instant::now(); | |
| for _ in 0..n { | |
| if mutable == 0 { | |
| c += 1; | |
| } else { | |
| let _a = c; | |
| } | |
| } | |
| let spent = Instant::now() - start; | |
| assert_eq!(c, n); | |
| print_stat!("LOCAL", spent); | |
| // atomic | |
| let start = Instant::now(); | |
| for _ in 0..n { | |
| let mut a = X.load(Ordering::SeqCst); | |
| if mutable == 0 { | |
| a += 1; | |
| X.store(a, Ordering::SeqCst); | |
| } | |
| } | |
| let spent = Instant::now() - start; | |
| assert_eq!(X.load(Ordering::SeqCst), n); | |
| print_stat!("ATOMIC", spent); | |
| // mutex | |
| let start = Instant::now(); | |
| for _ in 0..n { | |
| let mut a = X_MUTEX.lock().await; | |
| if mutable == 0 { | |
| *a += 1; | |
| } | |
| } | |
| let spent = Instant::now() - start; | |
| assert_eq!(*X_MUTEX.lock().await, n); | |
| print_stat!("TOKIO MUTEX", spent); | |
| // rwlock | |
| let start = Instant::now(); | |
| for _ in 0..n { | |
| if mutable == 0 { | |
| let mut a = X_RWLOCK.write().await; | |
| *a += 1; | |
| } else { | |
| let _a = X_RWLOCK.read().await; | |
| } | |
| } | |
| let spent = Instant::now() - start; | |
| assert_eq!(*X_RWLOCK.read().await, n); | |
| print_stat!("TOKIO RWLOCK", spent); | |
| // s mutex | |
| let start = Instant::now(); | |
| for _ in 0..n { | |
| let mut a = S_MUTEX.lock().unwrap(); | |
| if mutable == 0 { | |
| *a += 1; | |
| } | |
| } | |
| let spent = Instant::now() - start; | |
| assert_eq!(*S_MUTEX.lock().unwrap(), n); | |
| print_stat!("SYNC MUTEX", spent); | |
| // s rwlock | |
| let start = Instant::now(); | |
| for _ in 0..n { | |
| if mutable == 0 { | |
| let mut a = S_RWLOCK.write().unwrap(); | |
| *a += 1; | |
| } else { | |
| let _a = S_RWLOCK.read().unwrap(); | |
| } | |
| } | |
| let spent = Instant::now() - start; | |
| assert_eq!(*S_RWLOCK.write().unwrap(), n); | |
| print_stat!("SYNC RWLOCK", spent); | |
| // s refcell | |
| let start = Instant::now(); | |
| for _ in 0..n { | |
| if mutable == 0 { | |
| S_CELL.with(|cell| { | |
| let mut a = cell.borrow_mut(); | |
| *a += 1; | |
| }); | |
| } else { | |
| S_CELL.with(|cell| { | |
| let _a = cell.borrow(); | |
| }); | |
| } | |
| } | |
| let spent = Instant::now() - start; | |
| assert_eq!( | |
| S_CELL.with(|cell| { | |
| let x = cell.borrow(); | |
| *x | |
| }), | |
| n | |
| ); | |
| print_stat!("SYNC REFCELL", spent); | |
| } | |
| Ok(()) | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment