Add clean_up function, add num_nodes logic to generator, change docs

fb_arc_set/shared/structs.c

@@ -24,20 +24,22 @@ typedef struct buffer {
 } buffer_t;
 
 static bool terminate = false;
+static int buffer_shmfd;
+static buffer_t *circ_buffer;
 
 /**
  * @brief Function to execute when the program gets a signal
- * @details flips the terminate variable to true
- * @param none
+ * @details Flips the terminate variable to true
+ * @param signo
  * @return none
  **/
-static void signal_handler() {
+static void signal_handler(int signo) {
     terminate = true;
 }
 
 /**
  * @brief Function to process the signals passed by the user
- * @details creates a new sigaction structure
+ * @details Creates a new sigaction structure
  *          and changes the behaviour of the SIGINT and SIGTERM signals
  * @param none
  * @return none
@@ -49,5 +51,3 @@ static void process_signal(void){
     sigaction(SIGINT, &sa, NULL);
     sigaction(SIGTERM, &sa, NULL);
 }
-
-static buffer_t *circ_buffer;