3 static void undo(void *control)  in undo()  argument
6 	 * resetting control to the initial state. */  in undo()
7 	if (a_swap(control, 0) == 3)  in undo()
8 		__wake(control, -1, 1);  in undo()
11 hidden int __pthread_once_full(pthread_once_t *control, void (*init)(void))  in __pthread_once_full()  argument
19 	for (;;) switch (a_cas(control, 0, 1)) {  in __pthread_once_full()
21 		pthread_cleanup_push(undo, control);  in __pthread_once_full()
25 		if (a_swap(control, 2) == 3)  in __pthread_once_full()
26 			__wake(control, -1, 1);  in __pthread_once_full()
30 		a_cas(control, 1, 3);  in __pthread_once_full()
32 		__wait(control, 0, 3, 1);  in __pthread_once_full()
39 int __pthread_once(pthread_once_t *control, void (*init)(void))  in __pthread_once()  argument
43 	if (*(volatile int *)control == 2) {  in __pthread_once()
47 	return __pthread_once_full(control, init);  in __pthread_once()