#include <chrono>#include <condition_variable>#include <iostream>#include <mutex>#include <string_view>#include <thread> usingnamespace std::chrono_literals; void print(std::string_view name,conststd::stop_token& token){std::cout<< name<<": stop_possible = "<< token.stop_possible();std::cout<<", stop_requested = "<< token.stop_requested()<<'\n';} void finite_sleepy(std::stop_token stoken){for(int i=10; i;--i){std::this_thread::sleep_for(300ms);if(stoken.stop_requested()){std::cout<<"  Sleepy worker is requested to stop\n";return;} std::cout<<"  Sleepy worker goes back to sleep\n";}} void infinite_sleepy(){for(int i=5; i;--i){std::this_thread::sleep_for(300ms);std::cout<<"  Run as long as we want\n";}}  int main(){std::cout<<std::boolalpha; // A worker thread that will listen to stop requestsstd::jthread stop_worker(finite_sleepy); // A worker thread that will only stop when completedstd::jthread inf_worker(infinite_sleepy); std::stop_token def_token;std::stop_token stop_token= stop_worker.get_stop_token();std::stop_token inf_token= inf_worker.get_stop_token();    print("def_token ", def_token);    print("stop_token", stop_token);    print("inf_token ", inf_token); std::cout<<"\nRequest and join stop_worker:\n";    stop_worker.request_stop();    stop_worker.join(); std::cout<<"\nRequest and join inf_worker:\n";    inf_worker.request_stop();    inf_worker.join();std::cout<<'\n';     print("def_token ", def_token);    print("stop_token", stop_token);    print("inf_token ", inf_token);}

def_token : stop_possible = false, stop_requested = falsestop_token: stop_possible = true, stop_requested = falseinf_token : stop_possible = true, stop_requested = false Request and join stop_worker:  Run as long as we want  Sleepy worker is requested to stop Request and join inf_worker:  Run as long as we want  Run as long as we want  Run as long as we want  Run as long as we want def_token : stop_possible = false, stop_requested = falsestop_token: stop_possible = true, stop_requested = trueinf_token : stop_possible = true, stop_requested = true