Fix exceptions with semaphore

src/kernel/synch.rs

@@ -7,12 +7,13 @@ use std::rc::Rc;
 use super::thread_manager::ThreadManager;
 
 ///     Structure of a Semaphore used for synchronisation
+#[derive(PartialEq)]
 pub struct Semaphore {
 
     /// Counter of simultanous Semaphore
-    counter:i32,
+    pub counter:i32,
     /// QUeue of Semaphore waiting to be exucated
-    waiting_queue:List<Rc<RefCell<Thread>>>,
+    pub waiting_queue:List<Rc<RefCell<Thread>>>,
 
 }
 
@@ -78,7 +79,8 @@ impl Semaphore {
 /// Lock used for synchronisation, can be interpreted has a Semaphore with a
 /// counter of 1
 /// It's used for critical parts
-pub struct Lock{
+#[derive(PartialEq)]
+pub struct Lock {
 
     /// Thread owning the lock
     owner: Option<Rc<RefCell<Thread>>>,