boost thread pool

threadpool.cpp

namespace bamthread
{
    typedef std::unique_ptr<boost::asio::io_service::work> asio_worker;

    struct ThreadPool {
        ThreadPool(size_t threads) :service(), working(new asio_worker::element_type(service)) {
            while(threads--)
            {
                auto worker = boost::bind(&boost::asio::io_service::run, &(this->service));
                g.add_thread(new boost::thread(worker));
            }
        }

        template<class F>
            void enqueue(F f){
                service.post(f);
            }

        ~ThreadPool() {
            working.reset(); //allow run() to exit
            g.join_all();
            service.stop();
        }

        private:
        boost::asio::io_service service; //< the io_service we are wrapping
        asio_worker working;
        boost::thread_group g; //< need to keep track of threads so we can join them
    };
}