[Boost-users] [BGL] grid_graph, vertex_index and shared_ptr

Hello, Recently I've found that the vertex_index property map of grid_graph holds a shared_ptr to a graph copy. Is there any reason for it? Actually, other classes which are tied with grid_graph holds it by plain pointer. Switching to it in grid_graph_index_map almost doubled the performance on some of my algorithms. Even copying the graph object by value (which actually holds 5 fields with 3 being small boost::array) still has better performance than using shared_ptr. Maybe it should be switched to plain pointer? -- ------------ Sergey Mitsyn.