Stupid way to re-enter data

prodconrs/src/main.rs

@@ -7,25 +7,33 @@ fn main() {
 
     let consumer = thread::spawn(move || {
         while let Ok(msg) = rx.recv() {
-            if msg == 0 {
-                println!("Quit");
+            println!("Message: {}", msg);
+
+            if msg > 1000 {
+                // actually, we just need to drop self_tx, otherwise the consumer will keep waiting
+                // for inputs from it, even when tx was already dropped when the producer ended.
+                // the problem with a direct drop is that rustc can't see that it won't be used
+                // anymore.
                 break;
+            } else if msg % 2 == 0 {
+                if self_tx.send(msg * 2).is_err() {
+                    println!("Failed to push new value to consumer");
+                    break;
+                };
             }
-
-            println!("Message: {}", msg);
         }
     });
 
     let producer = thread::spawn(move || {
         for i in 1..12 {
-            tx.send(i);
+            if tx.send(i).is_err() {
+                println!("Failed to send {}, ending producer", i);
+                break;
+            }
         }
-        tx.send(0);
+        // tx.send(0);
     });
 
-    println!("Waiting producer...");
-    producer.join();
-    println!("Waiting consumer...");
-    consumer.join();
-
+    producer.join().unwrap();
+    consumer.join().unwrap();
 }