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runtime_async.cpp
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31 lines (24 loc) · 811 Bytes
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// 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::Runtime& rt){
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.
rt.silent_async([&](){
std::cout << "async task from the subflow\n";
counter.fetch_add(1, std::memory_order_relaxed);
});
}
rt.corun();
std::cout << counter << " = 10\n";
});
executor.run(taskflow).wait();
return 0;
}