Simple task queue using C++11 thread&atomic

gistfile1.txt

std::vector<std::thread> workers;
std::atomic<unsigned int> i(0);

for (auto t = 0; t < std::thread::hardware_concurrency(); t++){
    workers.push_back(std::thread([&,t](){
        int index = 0;
        while((index = i++) < numItems){
           ...
        }
    }));
}

for(auto &t : workers){
    t.join();
}