// This program demonstrates how to use a runtime task to forcefully

// schedule an active task that would never be scheduled.

#include <taskflow/taskflow.hpp>

int main() {

tf::Taskflow taskflow("Runtime Tasking");

tf::Executor executor;

tf::Task A, B, C, D;

std::tie(A, B, C, D) = taskflow.emplace(

[] () { return 0; },

[&C] (tf::Runtime& rt) { // C must be captured by reference

std::cout << "B\n";

rt.schedule(C);

},

[] () { std::cout << "C\n"; },

[] () { std::cout << "D\n"; }

);

// name tasks

A.name("A");

B.name("B");

C.name("C");

D.name("D");

// create conditional dependencies

A.precede(B, C, D);

// dump the graph structure

taskflow.dump(std::cout);

// we will see both B and C in the output

executor.run(taskflow).wait();

return 0;

}