153     philosopher &my_philosopher;  member in think_node_body
156     think_node_body(philosopher &p) : my_philosopher(p) {}  in think_node_body()
157     think_node_body(const think_node_body &other) : my_philosopher(other.my_philosopher) {}  in think_node_body()
159         my_philosopher.think();  in operator ()()
165     philosopher &my_philosopher;  member in eat_node_body
168     eat_node_body(philosopher &p) : my_philosopher(p) {}  in eat_node_body()
169     eat_node_body(const eat_node_body &other) : my_philosopher(other.my_philosopher) {}  in eat_node_body()
171         my_philosopher.eat();  in operator ()()
177     philosopher &my_philosopher;  member in forward_node_body
180     forward_node_body(philosopher &p) : my_philosopher(p) {}  in forward_node_body()
181     forward_node_body(const forward_node_body &other) : my_philosopher(other.my_philosopher) {}  in forward_node_body()
184         my_philosopher.forward(in, out);  in operator ()()