Fix exceptions with semaphore

src/kernel/system.rs

@@ -3,7 +3,6 @@
 //! Module containing structs and methods pertaining to the state of the operating system
 
 use super::{thread_manager::ThreadManager};
-use crate::utility::objaddr::ObjAddr;
 
 /// # System
 /// 
@@ -16,8 +15,7 @@ use crate::utility::objaddr::ObjAddr;
 /// - The thread to be destroyed next
 /// - The scheduler which acts upon these threads
 pub struct System {
-    thread_manager: ThreadManager,
-    obj_addrs: ObjAddr
+    thread_manager: ThreadManager
 }
 
 impl System {
@@ -28,14 +26,12 @@ impl System {
         &mut self.thread_manager
     }
 
-    pub fn get_obj_addrs(&mut self) -> &mut ObjAddr { &mut self.obj_addrs }
-
 }
 
 impl Default for System {
     /// System constructor
     fn default() -> Self {
-        Self { thread_manager: ThreadManager::new(), obj_addrs: ObjAddr::init() }
+        Self { thread_manager: ThreadManager::new() }
     }
 }