// The program demonstrates how to create asynchronous task
// from a running subflow.
#include <taskflow/taskflow.hpp>

int main() {

 tf::Taskflow taskflow("Subflow Async");
 tf::Executor executor;

 std::atomic<int> counter{0};

 taskflow.emplace([&](tf::Subflow& sf){
 for(int i=0; i<10; i++) {
 // Here, we use "silent_async" instead of "async" because we do
 // not care the return value. The method "silent_async" gives us
 // less overhead compared to "async".
 // The 10 asynchronous tasks run concurrently.
 sf.silent_async([&](){
 std::cout << "async task from the subflow\n";
 counter.fetch_add(1, std::memory_order_relaxed);
 });
 }
 sf.join();
 std::cout << counter << " = 10\n";
 });

 executor.run(taskflow).wait();

 return 0;
}