pcache_insert_fd
pcache_insert_fd(pcp, pdp, pollfdnum);
pcache_insert_fd(pcp, pdp, 1);
extern void pcache_insert_fd(pollcache_t *, polldat_t *, nfds_t);
pcache_insert_fd(pcp, pdp, nfds);
pcache_insert_fd(ps->ps_pcache, pdp, ps->ps_nfds);