pthread_attr_setdaemonstate_np
extern int pthread_attr_setdaemonstate_np(pthread_attr_t *, int);
(void) pthread_attr_setdaemonstate_np(
(void) pthread_attr_setdaemonstate_np(&tpool->tp_attr,
VERIFY0(pthread_attr_setdaemonstate_np(&pgn_thr_attr,
VERIFY0(pthread_attr_setdaemonstate_np(&pgn_thr_attr,
extern int pthread_attr_setdaemonstate_np(pthread_attr_t *, int);