diff --git a/Building/Building.c b/Building/Building.c
index c62e3c0..2b2c7b3 100644
--- a/Building/Building.c
+++ b/Building/Building.c
@@ -8,8 +8,6 @@
 
 #define LINE_BUFFER 256
 
-GETTER(Building, Elevator **, elevators)
-
 void remove_end_char(char * string, char character){
 	size_t string_size = strlen(string);
 	if (string[string_size - 1] == character)
@@ -110,6 +108,7 @@ void _free__Building(THIS(Building)){
 
 Building *_init_Building(char * residents_file, char * visitors_file){
 	Building * new_building = malloc_or_die(sizeof(Building));
+	char elevator_name[] = "@";
 	int i;
 
 	new_building->floors = FLOORS;
@@ -117,13 +116,14 @@ Building *_init_Building(char * residents_file, char * visitors_file){
 	new_building->residents = NEW(List);
 	new_building->visitors = NEW(List);
 	new_building->box = NEW(CommunicationBox);
-	for (i=0; i<ELEVATOR_NB; i++)
-		new_building->elevators[i] = NEW(Elevator);
+	for (i=0; i<ELEVATOR_NB; i++) {
+		elevator_name[0]++;
+		new_building->elevators[i] = NEW(Elevator, elevator_name);
+	}
 
 
 
 	LINK_ALL(Building, new_building,
-			 get_elevators,
 			 parse_residents,
 			 parse_visitors
 	)
diff --git a/Building/Building.h b/Building/Building.h
index b300452..041500e 100644
--- a/Building/Building.h
+++ b/Building/Building.h
@@ -20,7 +20,6 @@ typedef struct o_Building {
 	CommunicationBox * box;
 	Elevator ** elevators;
 
-	SYNCHRONIZE Elevator ** (*get_elevators)(_THIS(Building));
 	PRIVATE void (*parse_residents)(_THIS(Building), char * file);
 	PRIVATE void (*parse_visitors)(_THIS(Building), char * file);
 
diff --git a/Elevator/Elevator.c b/Elevator/Elevator.c
index 50ab7d5..e2ace65 100644
--- a/Elevator/Elevator.c
+++ b/Elevator/Elevator.c
@@ -2,16 +2,41 @@
 // Created by Antoine Bartuccio on 05/06/2018.
 //
 
+#include <string.h>
 #include "Elevator.h"
 
 void _free__Elevator(THIS(Elevator)){
+	DELETE(this->passenger_ids);
+	if (this->name != NULL)
+		free(this->name);
+	pthread_mutex_unlock(&this->passenger_mutex);
+	pthread_mutex_destroy(&this->passenger_mutex);
 	free(this);
 }
 
-Elevator *_init_Elevator(){
-	Elevator * new_elevator = malloc_or_die(sizeof(Elevator));
+int get_number_of_passengers_Elevator(THIS(Elevator)){
+	int num;
+	pthread_mutex_lock(&this->passenger_mutex);
+	num = this->passenger_ids->get_size(this->passenger_ids);
+	pthread_mutex_lock(&this->passenger_mutex);
+	return num;
+}
 
-	LINK(Elevator, new_elevator, _free_);
+int can_get_more_passengers_Elevator(_THIS(Elevator)){
+	return (this->get_number_of_passengers(this) < MAX_ELEVATOR_CAPACITY);
+}
+
+Elevator *_init_Elevator(char * name){
+	Elevator * new_elevator = malloc_or_die(sizeof(Elevator));
+	new_elevator->state = waiting;
+	new_elevator->name = strdup(name);
+	new_elevator->passenger_ids = NEW(List);
+	pthread_mutex_init(&new_elevator->passenger_mutex, NULL);
+
+	LINK_ALL(Elevator, new_elevator,
+			 get_number_of_passengers,
+			 can_get_more_passengers
+	);
 
 	return new_elevator;
 }
\ No newline at end of file
diff --git a/Elevator/Elevator.h b/Elevator/Elevator.h
index c7b51f8..8ee26de 100644
--- a/Elevator/Elevator.h
+++ b/Elevator/Elevator.h
@@ -5,13 +5,27 @@
 #ifndef LO41_ELEVATOR_H
 #define LO41_ELEVATOR_H
 
+#include <pthread.h>
 #include "../Objects.h"
+#include "../List/List.h"
+
+#define MAX_ELEVATOR_CAPACITY 10
+
+typedef enum {running, waiting, sleeping} ELEVATOR_STATE;
 
 typedef struct o_Elevator {
+	PRIVATE ELEVATOR_STATE state;
+	PRIVATE List * passenger_ids;
+	PRIVATE char * name;
+	PRIVATE pthread_mutex_t passenger_mutex;
 
+	SYNCHRONIZE PUBLIC int (*get_number_of_passengers)(_THIS(Elevator));
+	SYNCHRONIZE PUBLIC int (*can_get_more_passengers(_THIS(Elevator)));
 	DESTRUCTOR(Elevator);
 } Elevator;
 
-Elevator *_init_Elevator();
+FRIENDLY(state, Building)
+
+Elevator *_init_Elevator(char* name);
 
 #endif //LO41_ELEVATOR_H
diff --git a/SharedData/SharedData.c b/SharedData/SharedData.c
index 83bd97d..9ce9d95 100644
--- a/SharedData/SharedData.c
+++ b/SharedData/SharedData.c
@@ -4,7 +4,36 @@
 
 #include "SharedData.h"
 
+SETTER(SharedData, Building *, main_building)
+
+void wait_threads_SharedData(THIS(SharedData)){
+	int i;
+	for (i=0; i<this->threads_nb; i++)
+		pthread_join(this->threads[i], NULL);
+}
+
+int call_elevator_SharedData(THIS(SharedData), int starting_floor, int destination_floor){
+	/* Make the thread wait for an elevator available and return the id of the elevator available */
+	if (this->main_building == NULL)
+		CRASH("No building attached to shared data, you cannot call an elevator\n");
+	if (starting_floor < 0)
+		CRASH("You cannot start from a floor lower than 0\n");
+	if (destination_floor > FLOORS)
+		CRASH("You are trying to reach a floor higher than the highest floor\n");
+
+	return 0;
+}
+
 void _free__SharedData(THIS(SharedData)){
+	int i;
+	if (this->threads != NULL){
+		for (i=0; i<this->threads_nb; i++)
+			pthread_cancel(this->threads[i]);
+		free(this->threads);
+	}
+	if (this->main_building != NULL)
+		DELETE(this->main_building);
+
 	free(this);
 }
 
@@ -12,7 +41,16 @@ SharedData *_get_instance_SharedData(){
 	static SharedData * new_shared_data = NULL;
 	if (new_shared_data == NULL){
 		new_shared_data = malloc_or_die(sizeof(SharedData));
-		LINK(SharedData, new_shared_data, _free_);
+
+		new_shared_data->threads = NULL;
+		new_shared_data->main_building = NULL; /* Should be set to NULL if freed */
+		new_shared_data->threads_nb = 0;
+
+		LINK_ALL(SharedData, new_shared_data,
+				 wait_threads,
+				 set_main_building,
+				 call_elevator
+		);
 	}
 	return new_shared_data;
 }
diff --git a/SharedData/SharedData.h b/SharedData/SharedData.h
index b987897..1f2d6bf 100644
--- a/SharedData/SharedData.h
+++ b/SharedData/SharedData.h
@@ -5,9 +5,23 @@
 #ifndef LO41_SHAREDDATA_H
 #define LO41_SHAREDDATA_H
 
+#include <pthread.h>
 #include "../Objects.h"
+#include "../Building/Building.h"
+
+#define MUTEX_NB 3
+
+enum {mutex_1, mutex_2, mutex_3};
 
 typedef struct o_SharedData {
+	PRIVATE int threads_nb;
+	PRIVATE pthread_t *threads;
+	PRIVATE pthread_mutex_t mutex_array[MUTEX_NB];
+	PRIVATE Building * main_building;
+
+	PUBLIC void (*set_main_building)(_THIS(SharedData), Building * building);
+	PUBLIC void (*wait_threads)(_THIS(SharedData));
+	PUBLIC int (*call_elevator)(_THIS(SharedData), int starting_floor, int destination_floor);
 
 	DESTRUCTOR(SharedData);
 } SharedData;
diff --git a/main.c b/main.c
index 6cc2162..b7c9aaf 100644
--- a/main.c
+++ b/main.c
@@ -1,4 +1,6 @@
 #include <stdio.h>
+#include <signal.h>
+
 #include "Objects.h"
 #include "List/List.h"
 #include "Building/Building.h"
@@ -6,6 +8,11 @@
 #include "Visitor/Visitor.h"
 #include "Resident/Resident.h"
 
+void clean_exit(int error_code){
+	DELETE(GET_INSTANCE(SharedData));
+	exit(0);
+}
+
 int main() {
 	List *l = NEW(List);
 	Visitor * roger = NEW(Visitor, 8, "Roger");
@@ -14,6 +21,7 @@ int main() {
 	char text2[30] = "Patator";
 
 	GET_INSTANCE(SharedData);
+	signal(SIGINT, clean_exit);
 
 	printf("La taille est de %d\n", l->get_size(l));
 	l->insert_tail(l, text1, sizeof(char) * 30);
@@ -35,11 +43,15 @@ int main() {
 	printf("Il y a %d étages dans l'immeuble\n", main_building->floors);
 	printf("%s est le second visiteur\n", ((Visitor *) main_building->visitors->get_element_data(main_building->visitors, 1))->name);
 	printf("%s est le second resident\n", ((Resident *) main_building->residents->get_element_data(main_building->residents, 1))->name);
+	for (int i=0; i < ELEVATOR_NB; i++)
+		printf("Ascenseur %s\n", main_building->elevators[i]->name);
+	GET_INSTANCE(SharedData)->main_building = main_building;
 	DELETE(main_building);
 
 	printf("Hello, World!\n");
 	printf("%s veut rentrer\n", roger->get_name(roger));
 	printf("%s habite dans l'appartement %d\n", sli->get_name(sli), sli->get_apartment_floor(sli));
+
 	DELETE(GET_INSTANCE(SharedData));
 	DELETE(roger);
 	DELETE(sli);