libkse/thread/thr_once.c

51  * on once_control shall be as if pthread_once() was never called.
57 	pthread_once_t *once_control = arg;
60 	once_control->state = ONCE_NEVER_DONE;
66 _pthread_once(pthread_once_t *once_control, void (*init_routine) (void))
71 	if (once_control->state == ONCE_DONE)
74 	while (*(volatile int *)&(once_control->state) == ONCE_IN_PROGRESS)
80 	if (*(volatile int *)&(once_control->state) == ONCE_NEVER_DONE) {
81 		once_control->state = ONCE_IN_PROGRESS;
84 		THR_CLEANUP_PUSH(curthread, once_cancel_handler, once_control);
88 		once_control->state = ONCE_DONE;