add a README explaining the purpose of the workspace/ folder

[rust-101.git] / src / part15.rs

diff --git a/src/part15.rs b/src/part15.rs
index 47952d6995bb08a06b02602d61296a5b957209d3..f60a481bfc7a3302f9bfe6f04f0695ab88746db5 100644 (file)
--- a/src/part15.rs
+++ b/src/part15.rs
@@ -3,6 +3,7 @@
 
 use std::sync::{Arc, Mutex};
 use std::thread;
+use std::time::Duration;
 
 //@ We already saw that we can use `Arc` to share memory between threads. However, `Arc` can only provide *read-only*
 //@ access to memory: Since there is aliasing, Rust cannot, in general, permit mutation. To implement shared-memory
@@ -70,7 +71,7 @@ pub fn main() {
     let counter1 = counter.clone();
     let handle1 = thread::spawn(move || {
         for _ in 0..10 {
-            thread::sleep_ms(15);
+            thread::sleep(Duration::from_millis(15));
             counter1.increment(2);
         }
     });
@@ -79,14 +80,14 @@ pub fn main() {
     let counter2 = counter.clone();
     let handle2 = thread::spawn(move || {
         for _ in 0..10 {
-            thread::sleep_ms(20);
+            thread::sleep(Duration::from_millis(20));
             counter2.increment(3);
         }
     });
 
     // Now we watch the threads working on the counter.
     for _ in 0..50 {
-        thread::sleep_ms(5);
+        thread::sleep(Duration::from_millis(5));
         println!("Current value: {}", counter.get());
     }
 
@@ -120,7 +121,7 @@ pub fn main() {
 //@ In part 13, we talked about types that are marked `Send` and thus can be moved to another thread. However, we did *not*
 //@ talk about the question whether a reference is `Send`. For `&mut T`, the answer is: It is `Send` whenever `T` is send.
 //@ `&mut` allows moving values back and forth, it is even possible to [`swap`](https://doc.rust-lang.org/stable/std/mem/fn.swap.html)
-//@ the contents of two mutable references. So in terms of concurrency, sending a mutable, exclusive reference is very much like
+//@ the contents of two mutable references. So in terms of concurrency, sending a mutable, unique reference is very much like
 //@ sending full ownership, in the sense that it can be used to move the object to another thread.
 //@ 
 //@ But what about `&T`, a shared reference? Without interior mutability, it would always be all-right to send such values.