156 bool CycleBreaker::Circuit(Vertex::Index vertex, Vertex::Index depth) {  in Circuit()  argument
159   stack_.push_back(vertex);  in Circuit()
160   blocked_[vertex] = true;  in Circuit()
176            subgraph_[vertex].subgraph_edges.begin();  in Circuit()
177        w != subgraph_[vertex].subgraph_edges.end(); ++w) {  in Circuit()
194     Unblock(vertex);  in Circuit()
197              subgraph_[vertex].subgraph_edges.begin();  in Circuit()
198          w != subgraph_[vertex].subgraph_edges.end(); ++w) {  in Circuit()
199       if (blocked_graph_[*w].out_edges.find(vertex) ==  in Circuit()
201         blocked_graph_[*w].out_edges.insert(make_pair(vertex,  in Circuit()
206   CHECK_EQ(vertex, stack_.back());  in Circuit()