template <class ForwardIt>
void qSort(ForwardIt first, ForwardIt last) {
	ThreadPool threadPool(thread::hardware_concurrency());
	qSortAuxiliary(first, last, threadPool);
}

template <class ForwardIt>
void qSortAuxiliary(ForwardIt first, ForwardIt last, ThreadPool & threadPool) {
	typedef iterator_traits<ForwardIt>::value_type T;
	while (true) {
		if(first == last) return;
		auto pivot = first;
		advance(pivot, distance(first, last) / 2);
		auto middle1 = std::partition(first, last, [pivot](const T& em){ return em < *pivot; });
		auto middle2 = std::partition(middle1, last, [pivot](const T& em){ return !(*pivot < em); });
		threadPool.appendFn(bind(qSortAuxiliary<ForwardIt>, middle2, last, std::ref(threadPool)));
		last = middle1;
	}
}