#include <iostream>
#include <thread>
 
#include <boost/asio.hpp>
 
using boost::asio::io_service;
 
class foo
{
public:
    foo(io_service& service)
      : service_(service) {}
 
    void bar()
    {
        service_.post(
            [this]
            {
                std::cout << __PRETTY_FUNCTION__ << std::endl;
                sleep(1);
            });
    }
private:
    io_service& service_;
};
 
int main()
{
    io_service service;
    io_service::work* work = new io_service::work(service);
    std::thread t([&service] { service.run(); });
 
    foo f(service);
    for (size_t i = 0; i < 10; ++i)
        f.bar();
    sleep(5);
    std::cout << "Closing" << std::endl;
 
    //delete work;
    //work = nullptr;
 
    service.stop();
    t.join();
    return 0;
}
 

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