26.多线程join detach 

 1 #include <iostream>
 2 #include <thread>
 3 #include <array>
 4 #include <Windows.h>
 5 using namespace std;
 6 
 7 void show()
 8 {
 9     MessageBoxA(0, "1", "1", 0);
10 }
11 
12 void main()
13 {
14     //获取CPU核心的个数
15     auto n = thread::hardware_concurrency();
16     cout << "CPU核心个数:" << n << endl;
17     array<thread, 3> threads{thread(show), thread(show), thread(show)};
18     
19     for (int i=0;i<3;i++)
20     {
21         //使用join后主线程等待执行完之后才结束
22         //threads[i].join();
23         //脱离主线程,主线程结束不报错,自动退出
24         threads[i].detach();
25     }
26     
27     Sleep(3000);
28 }

 

posted @ 2018-03-11 21:22  喵小喵~  阅读(146)  评论(0)    收藏  举报