CLASS_HASH
index = CLASS_HASH(class);
c_list->cl_next = SH_CLASS_HASH(shp)[CLASS_HASH(class)];
SH_CLASS_HASH(shp)[CLASS_HASH(class)] = c_list;
c_list = chan->scd_class_list_tbl[CLASS_HASH(class_name)];
CLASS_HASH(event_class));