void xpthread_once (pthread_once_t *guard, void (*func) (void));
void xpthread_attr_destroy (pthread_attr_t *attr);
void xpthread_attr_init (pthread_attr_t *attr);
+void xpthread_attr_setaffinity_np (pthread_attr_t *attr,
+ size_t cpusetsize,
+ const cpu_set_t *cpuset);
void xpthread_attr_setdetachstate (pthread_attr_t *attr,
int detachstate);
void xpthread_attr_setstack (pthread_attr_t *attr, void *stackaddr,