Implemente finish (not finished yet), fix ucontext for windows

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) {