[TOC] ## std::atomic ``` #include <thread> #include <iostream> #include <Windows.h> int main() { std::atomic<int> counter(0); std::thread t1([&]() { counter++; }); std::thread t2([&]() { counter++; }); t1.join(); t2.join(); std::cout << counter; return 0; } ``` ### 判斷是否可以使用原子操作 并為整數或浮點數的原子類型提供了基本的數值成員函數 ``` struct my_struct { int head; }; int main() { std::atomic<std::string> counter; std::cout<<std::boolalpha << counter.is_lock_free(); //true return 0; } ```