implemented execute method

src/lib.rs

@@ -1,10 +1,13 @@
-use std::{sync::mpsc, thread};
+use std::{
+    sync::{mpsc, Arc, Mutex},
+    thread,
+};
 
 pub struct ThreadPool {
     workers: Vec<Worker>,
     sender: mpsc::Sender<Job>,
 }
-
+type Job = Box<dyn FnOnce() + Send + 'static>;
 impl ThreadPool {
     /// Create a new ThreadPool.
     ///
@@ -15,12 +18,13 @@ impl ThreadPool {
     /// The `new` function will panic if the size is zero.
     pub fn new(size: usize) -> ThreadPool {
         assert!(size > 0);
-        let (sender, reciever) = mpsc::channel();
+        let (sender, receiver) = mpsc::channel();
 
+        let receiver = Arc::new(Mutex::new(receiver));
         let mut workers = Vec::with_capacity(size);
 
         for id in 0..size {
-            workers.push(Worker::new(id))
+            workers.push(Worker::new(id, Arc::clone(&receiver)))
         }
 
         ThreadPool { workers, sender }
@@ -30,18 +34,25 @@ impl ThreadPool {
     where
         F: FnOnce() + Send + 'static,
     {
+        let job = Box::new(f);
+        self.sender.send(job).unwrap();
     }
 }
 
-struct Job;
 struct Worker {
     id: usize,
     thread: thread::JoinHandle<()>,
 }
 
 impl Worker {
-    pub fn new(id: usize) -> Worker {
-        let thread = thread::spawn(|| {});
+    pub fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
+        let thread = thread::spawn(move || {
+            let job = receiver.lock().unwrap().recv().unwrap();
+
+            println!("Worker {id} got a job; executing....");
+
+            job();
+        });
         Worker { id, thread }
     }
 }