{

for (int i = 1; i < 1000000; ++i)

{

std::lock_guard<std::mutex> lock(g_mutex);

std::cout << "MyFunc() [" << "] at thread [ " << std::this_thread::get_id() << "] output" << std::endl;

}

{

ThreadPool tp;

mutex mtx;

//这里只添加四次任务，因此任务队列实际大小为4

for (int i = 0; i < 4; ++i)

{

tp.addTask(MyFunc);

}

return 0;

}