Contents

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();

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

} // namespace flow
} // namespace tbb

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 execution until all tasks associated with the graph have completed or cancelled.

void reset(reset_flags f = rf_reset_protocol)

Resets the graph according to the specified flags. Flags to reset() can be combined with bitwise-or.

void cancel()

Cancels all tasks in the graph.

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.

Flow Graph reset_flags Enumeration