share 3 4 5

Chapter08/Cargo.toml

@@ -56,3 +56,15 @@ path = "share1.rs"
 name = "share2"
 path = "share2.rs"
 
+[[bin]]
+name = "share3"
+path = "share3.rs"
+
+[[bin]]
+name = "share4"
+path = "share4.rs"
+
+[[bin]]
+name = "share5"
+path = "share5.rs"
+

Chapter08/share3.rs

@@ -0,0 +1,13 @@
+use std::thread;
+
+fn main() {
+   static A: [u8; 100] = [22; 100];
+
+   thread::spawn(|| {
+      A[3];
+   });
+
+   thread::spawn(|| {
+      A[3]
+   });
+}

Chapter08/share4.rs

@@ -0,0 +1,18 @@
+use std::thread;
+#[macro_use] extern crate lazy_static;
+
+lazy_static! {
+   static ref A: Vec<u32> = {
+      vec![1, 2, 3]
+   };
+}
+
+fn main() {
+   thread::spawn(|| {
+      A[1];
+   });
+
+   thread::spawn(|| {
+      A[2];
+   });
+}

Chapter08/share5.rs

@@ -0,0 +1,20 @@
+use std::thread;
+use std::sync::{Arc};
+
+fn main() {
+   let a = Arc::new(vec![1, 2, 3]);
+
+   {
+      let a = Arc::clone(&a);
+      thread::spawn(move || {
+         a[1];
+      });
+   }
+
+   {
+      let a = Arc::clone(&a);
+      thread::spawn(move || {
+         a[1];
+      });
+   }
+}