#include <iostream>
#include <future>
#include <type_traits>
#include <boost/asio.hpp>
using namespace boost::asio;
io_service ios;
io_service::work work{ ios };
template < typename Func >
auto post(Func&& func)
{
using return_type = decltype(func());
auto promise = std::make_shared<std::promise<return_type>>();
auto future = promise->get_future();
ios.post
(
[promise, func]
{
promise->set_value(func());
}
);
return future;
}
int main()
{
auto async_res = std::async
(
std::launch::async,
[]
{
ios.run();
}
);
int a = 10;
int b = 20;
auto future = post([a, b] { return a*b; });
std::cout << future.get() << std::endl;
return 0;
}
출처 : http://zepeh.tistory.com/315
