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p16.fearless_conscurrency/mutex/.gitignore

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+/target

p16.fearless_conscurrency/mutex/Cargo.toml

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+[package]
+name = "mutex"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

p16.fearless_conscurrency/mutex/src/main.rs

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+fn main() {
+    println!("Hello, world!");
+    mutex_learn();
+}
+
+use std::sync::{Arc, Mutex};
+use std::thread;
+use std::time::Duration;
+
+fn mutex_learn() {
+    let strings = Arc::new(Mutex::new(vec![]));
+    let mut ths = vec![];
+    for i in 1..10 {
+        let strings = Arc::clone(&strings); //获得一个强引用
+        let handle = thread::spawn(move || {
+            for _i in 1..3 {
+                strings
+                    .lock()
+                    .unwrap()
+                    .push(String::from(format!("thread{}: ", i)) + &(i + _i).to_string());
+                thread::sleep(Duration::from_micros(
+                    (((1 as f64) / (i as f64)) * 100.0) as u64, //线程越前的睡的越久
+                ));
+            }
+        });
+        ths.push(handle);
+    }
+
+    for th in ths {
+        th.join().unwrap();
+    }
+    println!("strings is {:?}", strings.lock().unwrap());
+}