void pthread_testcancel(void);
int pthread_cancel(pthread_t);
+int pthread_getschedparam(pthread_t, int *__restrict, struct sched_param *__restrict);
+int pthread_setschedparam(pthread_t, int, const struct sched_param *);
+int pthread_setschedprio(pthread_t, int);
+
int pthread_once(pthread_once_t *, void (*)(void));
int pthread_mutex_init(pthread_mutex_t *__restrict, const pthread_mutexattr_t *__restrict);