diff --git a/src/kernel/system.rs b/src/kernel/system.rs
index 5f04b2c..1fd2de9 100644
--- a/src/kernel/system.rs
+++ b/src/kernel/system.rs
@@ -2,11 +2,12 @@ use std::{sync::{RwLock, Arc}};
 
 use lazy_static::lazy_static;
 
-use crate::{kernel::{thread::Thread, scheduler::Scheduler}, utility::list::List};
+use crate::{kernel::{thread::Thread, scheduler::Scheduler}, utility::list::List, simulator::machine::Machine};
 
 extern crate lazy_static;
 
 lazy_static! {
+    pub static ref G_MACHINE: RwLock<Machine> = RwLock::new(Machine::_init_machine());
     pub static ref G_CURRENT_THREAD: RwLock<Option<Thread>> = RwLock::new(Option::None);
     pub static ref G_THREAD_TO_BE_DESTROYED: RwLock<Option<Thread>> = RwLock::new(Option::None);
     pub static ref G_ALIVE: RwLock<List<Arc<Thread>>> = RwLock::new(List::new());
diff --git a/src/kernel/thread.rs b/src/kernel/thread.rs
index 000877a..0a163d0 100644
--- a/src/kernel/thread.rs
+++ b/src/kernel/thread.rs
@@ -1,7 +1,7 @@
 use std::{sync::Arc};
 
 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}};
+use crate::{simulator::machine::{NUM_INT_REGS, NUM_FP_REGS, STACK_REG}, kernel::system::{G_MACHINE, G_THREAD_TO_BE_DESTROYED}};
 
 const SIMULATORSTACKSIZE: usize = 32 * 1024;
 const STACK_FENCEPOST: u32 = 0xdeadbeef;
@@ -116,7 +116,34 @@ impl Thread {
     }
 
     /// Finish the execution of the thread and prepare its deallocation
-    pub fn finish(&self) {
+    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);
+            }
+        }
+        
         todo!();
     }
     
diff --git a/src/kernel/ucontext.rs b/src/kernel/ucontext.rs
index 89b847d..6217a1d 100644
--- a/src/kernel/ucontext.rs
+++ b/src/kernel/ucontext.rs
@@ -1,8 +1,6 @@
 
 use std::mem::MaybeUninit;
 
-use libc::{ucontext_t, getcontext, setcontext, makecontext};
-
 /// Safe wrapper for ucontext_t struct of linux-gnu libc
 /// 
 /// setcontext and getcontext are unsafe function, this wrap unsafe libc functions 
@@ -13,7 +11,7 @@ use libc::{ucontext_t, getcontext, setcontext, makecontext};
 #[derive(PartialEq)]
 pub struct UContextT {
     #[cfg(not(target_os = "windows"))] // struct non disponible sur la libc sur windows
-    pub buf: ucontext_t,
+    pub buf: lib::ucontext_t,
     pub stackBottom: Vec<i8>
 }
 
@@ -22,7 +20,7 @@ impl UContextT {
 
     pub fn new() -> Self {
         let mut context = MaybeUninit::<ucontext_t>::uninit();
-        unsafe { getcontext(context.as_mut_ptr()) };
+        unsafe { lib::getcontext(context.as_mut_ptr()) };
         Self {
             buf: unsafe  { context.assume_init() },
             stackBottom: Vec::default(),
@@ -34,7 +32,7 @@ impl UContextT {
     /// Use `man getcontext` for more informations
     pub fn get_context(&mut self) -> i32 {
         unsafe {
-            getcontext(&mut self.buf)
+            lib::getcontext(&mut self.buf)
         }
     }
 
@@ -43,13 +41,13 @@ impl UContextT {
     /// Use `man setcontext` for more informations
     pub fn set_context(&mut self) -> i32 {
         unsafe {
-            setcontext(&self.buf)
+            lib::setcontext(&self.buf)
         }
     }
 
     pub fn make_context(&mut self, func: extern "C" fn(), args: i32) {
         unsafe {
-            makecontext(&mut self.buf, func, args)
+            lib::makecontext(&mut self.buf, func, args)
         }
     }
     
@@ -59,7 +57,9 @@ impl UContextT {
 impl UContextT {
 
     pub fn new() -> Self {
-        Self {}
+        Self {
+            stackBottom: Vec::default()
+        }
     }
 
     pub fn get_context(&mut self) {
diff --git a/src/simulator/interrupt.rs b/src/simulator/interrupt.rs
index 8f71885..8f08312 100644
--- a/src/simulator/interrupt.rs
+++ b/src/simulator/interrupt.rs
@@ -1,6 +1,6 @@
 
 
-struct Interrupt {
+pub struct Interrupt {
     level: InterruptStatus
 }
 
diff --git a/src/simulator/machine.rs b/src/simulator/machine.rs
index 6523628..59ab1b8 100644
--- a/src/simulator/machine.rs
+++ b/src/simulator/machine.rs
@@ -1,6 +1,6 @@
 use std::{ops::{Add, Sub}, io::Write};
 
-use super::{decode::{Instruction, decode}};
+use super::{decode::{Instruction, decode}, interrupt::Interrupt};
 use super::global::*;
 use std::fs::File;
 
@@ -71,7 +71,8 @@ pub struct Machine {
 	pub int_reg : Register<i64>,
 	pub fp_reg : Register<f32>,
 	pub main_memory : [u8 ; MEM_SIZE],
-	pub shiftmask : [u64 ; 64]
+	pub shiftmask : [u64 ; 64],
+	pub interrupt: Interrupt,
 	// futur taille à calculer int memSize = g_cfg->NumPhysPages * g_cfg->PageSize;
 	//creer une struct cfg(configuration) qui s'initialise avec valeur dans un fichier cfg
 }
@@ -95,7 +96,8 @@ impl Machine {
 			int_reg : Register::<i64>::init(),
 			fp_reg : Register::<f32>::init(),
 			main_memory : [0 ; MEM_SIZE],
-			shiftmask
+			shiftmask,
+			interrupt: Interrupt::new()
 		}
 		
 	}