pthread_atfork()
       pthread_attr_destroy()
       pthread_attr_init()
       pthread_attr_setdetachstate()
       pthread_attr_setinheritsched()
       pthread_attr_setschedparam()
       pthread_attr_setschedpolicy()
       pthread_attr_setstacksize()
       pthread_cancel()
       pthread_detach()
       pthread_exit()
       pthread_join()