Redesign scheduling points

init/init.c

@@ -24,12 +24,28 @@ void app_proc1 (void) {
   process_quit ();
 }
 
+void app_proc2 (void) {
+  letter = 'd';
+
+  for (;;) {
+    mutex_lock (MUTEX);
+
+    for (int i = 0; i < 3; i++)
+      test (letter);
+
+    mutex_unlock (MUTEX);
+  }
+
+  process_quit ();
+}
+
 void app_main (void) {
   mutex_create (MUTEX);
 
   letter = 'a';
 
   process_spawn (&app_proc1);
+  process_spawn (&app_proc2);
 
   for (;;) {
     mutex_lock (MUTEX);