Implement userspace TLS, remove RW Locks

init/init.c

@@ -8,7 +8,7 @@
 
 #define MUTEX 2000
 
-/* __thread char letter; */
+__thread char letter = 'c';
 
 void app_thread1 (void);
 
@@ -25,30 +25,30 @@ int spawn (void (*fn) (void)) {
 void app_main (void) {
   mutex_create (MUTEX);
 
-  /* letter = 'd'; */
+  letter = 'a';
 
   spawn (&app_thread1);
 
   for (;;) {
-    /* mutex_lock (MUTEX); */
+    mutex_lock (MUTEX);
 
-    /* for (int i = 0; i < 3; i++) */
-    /*   test (letter); */
+    for (int i = 0; i < 3; i++)
+      test (letter);
 
-    /* mutex_unlock (MUTEX); */
+    mutex_unlock (MUTEX);
   }
 }
 
 void app_thread1 (void) {
-  /* letter = 'c'; */
+  letter = 'b';
 
   for (;;) {
-    /* mutex_lock (MUTEX); */
+    mutex_lock (MUTEX);
 
-    /* for (int i = 0; i < 3; i++) */
-    /*   test (letter); */
+    for (int i = 0; i < 3; i++)
+      test (letter);
 
-    /* mutex_unlock (MUTEX); */
+    mutex_unlock (MUTEX);
   }
 
   quit ();