Added concurrency, pointers, oop

1 files changed, 137 insertions, 0 deletions

diff --git a/concurrency/src/main.rs b/concurrency/src/main.rs
new file mode 100644
index 0000000..53417eb
--- /dev/null
+++ b/concurrency/src/main.rs
@@ -0,0 +1,137 @@
+use std::sync::Arc;
+use std::rc::Rc;
+use std::sync::Mutex;
+use std::thread;
+use std::sync::mpsc;
+use std::time::Duration;
+
+fn main() {
+//    let handle = thread::spawn(|| {
+//        for i in 1..10 {
+//            println!("spawned: {}", i);
+//            thread::sleep(Duration::from_millis(1));
+//        }
+//    });
+//
+//    for i in 1..5 {
+//        println!("main: {}", i);
+//        thread::sleep(Duration::from_millis(1));
+//    }
+//
+//    handle.join().unwrap();
+
+
+
+//    let v = vec![1, 2, 3];
+//
+//    let handle = thread::spawn(move || {
+//        println!("Here's a vector: {:?}", v);
+//    });
+//
+//    drop(v);
+//    handle.join().unwrap();
+
+
+
+//    let (tx, rx) = mpsc::channel();
+//
+//    thread::spawn(move || {
+//        let val = String::from("hi");
+//        tx.send(val).unwrap();
+//        dbg!(val);
+//    });
+//
+//    let received = rx.recv().unwrap();
+//    dbg!(received);
+
+
+
+//    let (tx, rx) = mpsc::channel();
+//
+//    thread::spawn(move || {
+//        let vals = vec![
+//            String::from("the"),
+//            String::from("walking"),
+//            String::from("thread"),
+//        ];
+//
+//        for val in vals {
+//            tx.send(val).unwrap();
+//            thread::sleep(Duration::from_secs(1));
+//        }
+//    });
+//
+//    for received in rx {
+//        println!("got {}", received);
+//    }
+
+
+
+//    let (tx, rx) = mpsc::channel();
+//
+//    let tx1 = mpsc::Sender::clone(&tx);
+//    thread::spawn(move || {
+//        let vals = vec![
+//            String::from("the"),
+//            String::from("walking"),
+//            String::from("thread"),
+//        ];
+//
+//        for val in vals {
+//            tx1.send(val).unwrap();
+//            thread::sleep(Duration::from_secs(1));
+//        }
+//    });
+//
+//    thread::spawn(move || {
+//        let vals = vec![
+//            String::from("welcome"),
+//            String::from("to"),
+//            String::from("woodberry"),
+//            String::from("!"),
+//        ];
+//
+//        for val in vals {
+//            tx.send(val).unwrap();
+//            thread::sleep(Duration::from_secs(1));
+//        }
+//    });
+//
+//    for received in rx {
+//        dbg!(received);
+//    }
+
+
+
+//    let m = Mutex::new(5);
+//
+//    {
+//        let mut num = m.lock().unwrap();
+//        *num = 6;
+//    }
+//
+//    println!("m = {:?}", m);
+
+
+
+    let counter = Arc::new(Mutex::new(0));
+    let mut handles = vec![];
+
+    for _ in 0..10 {
+        let counter = Arc::clone(&counter);
+        let handle = thread::spawn(move || {
+            let mut num = counter.lock().unwrap();
+
+            *num += 1;
+        });
+        handles.push(handle);
+    }
+
+    for handle in handles {
+        handle.join().unwrap();
+    }
+    
+    dbg!(*counter.lock().unwrap());
+
+    println!("Done.");
+}