diff --git a/src/kernel/scheduler.rs b/src/kernel/scheduler.rs
index 3500f65..9753cdf 100644
--- a/src/kernel/scheduler.rs
+++ b/src/kernel/scheduler.rs
@@ -5,6 +5,7 @@ use crate::kernel::thread::Thread;
 
 use super::system::{G_CURRENT_THREAD, G_THREAD_TO_BE_DESTROYED};
 
+#[derive(PartialEq)]
 pub struct Scheduler {
     ready_list: List<Arc<Thread>>
 }
diff --git a/src/kernel/system.rs b/src/kernel/system.rs
index e650097..8ef7ecb 100644
--- a/src/kernel/system.rs
+++ b/src/kernel/system.rs
@@ -18,6 +18,7 @@ use crate::{
 /// - The list of active threads
 /// - The thread to be destroyed next
 /// - The scheduler which acts upon these threads
+#[derive(PartialEq)]
 pub struct System {
     g_machine: Machine,
     g_current_thread: Option<Thread>,
diff --git a/src/kernel/thread.rs b/src/kernel/thread.rs
index 0a163d0..ce4aec8 100644
--- a/src/kernel/thread.rs
+++ b/src/kernel/thread.rs
@@ -1,7 +1,7 @@
-use std::{sync::Arc};
+use std::{sync::Arc, rc::Rc};
 
-use super::{process::Process, mgerror::ErrorCode, system::{ObjectType, G_ALIVE, G_SCHEDULER}, ucontext::UContextT};
-use crate::{simulator::machine::{NUM_INT_REGS, NUM_FP_REGS, STACK_REG}, kernel::system::{G_MACHINE, G_THREAD_TO_BE_DESTROYED}};
+use super::{process::Process, mgerror::ErrorCode, system::{ObjectType, System}, ucontext::UContextT};
+use crate::{simulator::machine::{NUM_INT_REGS, NUM_FP_REGS, STACK_REG}};
 
 const SIMULATORSTACKSIZE: usize = 32 * 1024;
 const STACK_FENCEPOST: u32 = 0xdeadbeef;
@@ -20,12 +20,14 @@ pub struct Thread {
     // simulation_context: UContextT,
     thread_context: ThreadContext,
     stack_pointer: i32,
-    object_type: ObjectType
+    object_type: ObjectType,
+    system: Rc<System>
 }
 
 impl Thread {
 
-    pub fn new(name: String) -> Self {
+    /// Thread constructor
+    pub fn new(name: String, system: Rc<System>) -> Self {
         Self {
             name,
             process: None,
@@ -36,7 +38,8 @@ impl Thread {
                 pc: 0 
             },
             stack_pointer: 0,
-            object_type: ObjectType::ThreadType
+            object_type: ObjectType::ThreadType,
+            system
         }
     }
 
@@ -116,34 +119,7 @@ impl Thread {
     }
 
     /// Finish the execution of the thread and prepare its deallocation
-    pub fn finish(mut self) {
-        match G_MACHINE.write() {
-            Ok(mut machine) => {
-                let old_status = machine.interrupt.set_status(crate::simulator::interrupt::InterruptStatus::InterruptOff);
-                match G_ALIVE.write() {
-                    Ok(alive) => {
-                        // todo alive.remove(T) à implémenter dans List
-                    },
-                    Err(err) => {
-                        panic!("RwLock is poisoned: {}", err);
-                    }
-                }
-                match G_THREAD_TO_BE_DESTROYED.write() {
-                    Ok(mut thread_to_be_destroyed) => {
-                        thread_to_be_destroyed.replace(self);
-                    },
-                    Err(err) => {
-                        panic!("RwLock is poisoned: {}", err);
-                    }
-                }
-                // self.sleep();
-                machine.interrupt.set_status(old_status);
-            },
-            Err(err) => {
-                panic!("RwLock is poisoned: {}", err);
-            }
-        }
-        
+    pub fn finish(&self) {
         todo!();
     }
     
diff --git a/src/simulator/interrupt.rs b/src/simulator/interrupt.rs
index 8f08312..9cede5b 100644
--- a/src/simulator/interrupt.rs
+++ b/src/simulator/interrupt.rs
@@ -1,5 +1,5 @@
 
-
+#[derive(PartialEq)]
 pub struct Interrupt {
     level: InterruptStatus
 }
diff --git a/src/simulator/machine.rs b/src/simulator/machine.rs
index 45eb9d6..73f1872 100644
--- a/src/simulator/machine.rs
+++ b/src/simulator/machine.rs
@@ -22,7 +22,7 @@ impl RegisterNum for i64 {}
 impl RegisterNum for f32 {}
 
 
-
+#[derive(PartialEq)]
 pub struct Register<U: RegisterNum> {
 	register: [U; 32]
 }
@@ -68,6 +68,7 @@ impl Register<f32> {
 
 }
 
+#[derive(PartialEq)]
 pub struct Machine {
 	pub pc : u64,
 	pub sp: usize,