graph¶

[flow_graph.graph]

Class that serves as a handle to a flow graph of nodes and edges.

// Defined in header <tbb/flow_graph.h>

namespace tbb {
namespace flow {

    class graph {
    public:
        graph();
        graph(task_group_context& context);
        ~graph();

        void wait_for_all();

        bool is_cancelled();
        bool exception_thrown();
        void reset(reset_flags f = rf_reset_protocol);
    };

} // namespace flow
} // namespace tbb

reset_flags enumeration¶

reset_flags Enumeration

Member functions¶

graph(task_group_context &group)¶: Constructs a graph with no nodes. If group is specified the graph tasks are executed in this group. By default the graph is executed in a bound context of its own.

~graph()¶: Calls wait_for_all on the graph, then destroys the graph.

void wait_for_all()¶: Blocks until all tasks associated with the graph have completed.

void reset(reset_flags f = rf_reset_protocol)¶: Reset the graph regards to specified flags. Flags to reset() can be combined with bitwise-or.

bool is_cancelled()¶: Returns: true if the graph was cancelled during the last call to wait_for_all(), false otherwise.

bool exception_thrown()¶: Returns: true if during the last call to wait_for_all() an exception was thrown, false otherwise.