A base class for all graph nodes.
class graph_node;
#include "tbb/flow_graph.h"
The class graph_node is a base class for all flow graph nodes. The virtual destructor allows flow graph nodes to be destroyed through pointers to graph_node. For example, a vector< graph_node * > could be used to hold the addresses of flow graph nodes that will later need to be destroyed.
namespace tbb { namespace flow { class graph_node { public: virtual ~graph_node() {} }; } }