debugging.rst

Debugging

Task Backtraces

Sometimes it is useful to create a backtrace of tasks. This can be done with the manager method backtrace(). It returns a std::vector<TaskProperties>.

mgr().emplace_task(
    []
    {
        mgr().emplace_task(
            []
            {
                int depth = 0;
                for( auto t : mgr().backtrace() )
                    std::cout << "[" << depth++ << "]" << t.label << std::endl;
            },
            TaskProperties::Builder().label("Child Task")
        );
    },
    TaskProperties::Builder().label("Parent Task")
);

This will give us the output:

[0] Child Task
[1] Parent Task

Writing out the Task-Graph

TODO