tn_link
LIST_INSERT_HEAD(&sigev_threads, tn, tn_link);
LIST_REMOVE(tn, tn_link);
LIST_REMOVE(tn, tn_link);
LIST_ENTRY(sigev_thread) tn_link;
} tn_link;
#define tn_link_target tn_spec.tn_link.tn_link_target
#define tn_link_smr tn_spec.tn_link.tn_link_smr