C++ std::atomic

std::atomic是Ｃ++的原子操作，属于并发中的线程安全类型，可以理解成数据自带mutex锁，不同线程访问同一个数据时不出错，各线程不冲突。

#include <atomic>
#include <thread>
#include <list>
std::atomic_int g_iCount = 100;

void threadfunc1()
{
    while (g_iCount > 0)
    {
        printf("threadfunc1 g_iCount:%d\r\n", --g_iCount);
    }
}

void threadfunc2()
{
    while (g_iCount > 0)
    {
        printf("threadfunc2 g_iCount:%d\r\n", --g_iCount);
    }
}

int main(int argc, char** argv)
{
    thread t1(threadfunc1);
    thread t2(threadfunc1);
    thread t3(threadfunc2);
    thread t4(threadfunc2);

    t1.join();
    t2.join();
    t3.join();
    t4.join();

    return 0;
}

 

参考博客：

1>　https://blog.youkuaiyun.com/delongwang520/article/details/79604329

2>　https://blog.youkuaiyun.com/Poo_Chai/article/details/93652619

3>    https://blog.youkuaiyun.com/yockie/article/details/8838686?utm_medium=distribute.pc_relevant_t0.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param