-/* These functions will be implemented in project 1. */
-void thread_join (tid_t);
-void thread_set_priority (tid_t, int);
-int thread_get_priority (tid_t);
+int thread_get_priority (void);
+void thread_set_priority (int);
+
+int thread_get_nice (void);
+void thread_set_nice (int);
+int thread_get_recent_cpu (void);
+int thread_get_load_avg (void);