diff --git a/src/threads.h b/src/threads.h
index 8b345619cc9b8f84acf306edeac478778a215ce3..35d4830cef8538151e6673131b17324851e2df36 100644
--- a/src/threads.h
+++ b/src/threads.h
@@ -367,6 +367,12 @@ void init_thread_obj(struct object *o);
 void exit_thread_obj(struct object *o);
 void th_init(void);
 void th_cleanup(void);
+void thread_table_insert(struct object *o);
+void thread_table_delete(struct object *o);
+struct thread_state *thread_state_for_id(THREAD_T tid);
+struct object *thread_for_id(THREAD_T tid);
+void f_all_threads(INT32 args);
+
 /* Prototypes end here */
 
 #else