ThreadPool with boost thread and asio

ThreadPool

namespace bamthread
{
	typedef std::unique_ptr<boost::asio::io_service::work> asio_worker;
	// the actual thread pool
	struct ThreadPool {
		ThreadPool(size_t threads) :service(), working(new asio_worker::element_type(service)) {
			for ( std::size_t i = 0; i < threads; ++i ) {
				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
	};
}

Is this code under the Apache license like your other projects?