threadpool example

Cargo.lock

@@ -4661,6 +4661,15 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "threadpool"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d050e60b33d41c19108b32cea32164033a9013fe3b46cbd4457559bfbf77afaa"
+dependencies = [
+ "num_cpus",
+]
+
 [[package]]
 name = "time"
 version = "0.3.36"
@@ -4885,6 +4894,13 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6bc1c9ce2b5135ac7f93c72918fc37feb872bdc6a5533a8b85eb4b86bfdae52"
 
+[[package]]
+name = "tpdemo"
+version = "0.1.0"
+dependencies = [
+ "threadpool",
+]
+
 [[package]]
 name = "tracing"
 version = "0.1.40"

Cargo.toml

@@ -30,7 +30,7 @@ members = [
   "members/arithmetics",
   "members/egui-demo",
   "members/rfd-demo",
-  "members/iter-prod",
+  "members/iter-prod", "members/tpdemo",
 ]
 default-members = [
   ".",

members/tpdemo/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "tpdemo"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+threadpool = "1.8.1"

members/tpdemo/src/main.rs

@@ -0,0 +1,25 @@
+use std::sync::{Arc, Mutex};
+
+use threadpool::ThreadPool;
+
+struct Fish(i32);
+
+fn main() {
+    let thing: Arc<Mutex<Fish>> = Arc::new(Mutex::new(Fish(0)));
+
+    let tp = ThreadPool::new(20);
+
+    while thing.lock().unwrap().0 < 200 {
+        let thing = thing.clone();
+        tp.execute(move || {
+            do_thing(thing);
+        });
+    }
+}
+
+fn do_thing(thing: Arc<Mutex<Fish>>) {
+    println!("blubb");
+    #[allow(deprecated)]
+    std::thread::sleep_ms(1000);
+    thing.lock().unwrap().0 += 1;
+}