#21 call threadpool

src/main.rs

@@ -44,6 +44,14 @@ impl ThreadPool {
         }
         Self { workers, sender }
     }
+
+    pub fn execute<F>(&self, f: F)
+    where
+        F: FnOnce() + Send + 'static,
+    {
+        let job = Box::new(f);
+        self.sender.send(job).unwrap();
+    }
 }
 
 type Job = Box<dyn FnOnce() + Send + 'static>;
@@ -54,9 +62,7 @@ fn main() -> std::io::Result<()> {
     let pool = ThreadPool::new(4);
     for stream in listener.incoming() {
         let stream = stream?;
-        thread::spawn(|| {
-            handle_connection(stream).unwrap();
-        });
+        pool.execute(|| handle_connection(stream).unwrap());
     }
     Ok(())
 }