pthread_atfork
int pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
WR(__atfork, pthread_atfork);
struct pthread_atfork *af;
af = __malloc(sizeof(struct pthread_atfork));
struct pthread_atfork *af, *af1;
struct pthread_atfork *af;
__strong_reference(_pthread_atfork, pthread_atfork);
struct pthread_atfork *af;
af = __malloc(sizeof(struct pthread_atfork));
TAILQ_ENTRY(pthread_atfork) qe;
typedef TAILQ_HEAD(atfork_head, pthread_atfork) atfork_head;