atfork_head
TAILQ_FOREACH_REVERSE(af, &_thr_atfork_list, atfork_head, qe) {
TAILQ_FOREACH_REVERSE(af, &_thr_atfork_kern_list, atfork_head, qe) {
struct atfork_head _thr_atfork_list;
struct atfork_head _thr_atfork_kern_list;
extern struct atfork_head _thr_atfork_list;
extern struct atfork_head _thr_atfork_kern_list;
typedef TAILQ_HEAD(atfork_head, pthread_atfork) atfork_head;