distance_from     500 opal/class/opal_graph.c     vertex_distance_from_t distance_from;
distance_from     518 opal/class/opal_graph.c         distance_from.vertex = edge->end;
distance_from     519 opal/class/opal_graph.c         distance_from.weight = edge->weight;
distance_from     520 opal/class/opal_graph.c         opal_value_array_append_item(adjacents, &distance_from);