std::detach()用法

 1 #include <chrono>
 2 #include <thread>
 3 
 4 void independentThread()
 5 {
 6   std::cout << "Starting concurrent thread.
";
 7   std::this_thread::sleep_for(std::chrono::seconds(2));
 8   std::cout << "Exiting concurrent thread.
";
 9 }
10 
11 void threadCaller()
12 {
13   std::cout << "Starting thread caller.
";
14   std::thread t(independentThread);
15   t.detach();
16   std::this_thread::sleep_for(std::chrono::seconds(1));
17   std::cout << "Exiting thread caller.
";
18 }
19 
20 int main()
21 {
22   threadCaller();
23   std::this_thread::sleep_for(std::chrono::seconds(5));
24 }

输出：

 1 #include <iostream>
 2 #include <chrono>
 3 #include <thread>
 4 using namespace std;
 5 
 6 void independentThread()
 7 {
 8   std::cout << "Starting concurrent thread.
";
 9   std::this_thread::sleep_for(std::chrono::seconds(10));
10   std::cout << "Exiting concurrent thread.
";
11 }
12 
13 void threadCaller()
14 {
15   std::cout << "Starting thread caller.
";
16   std::thread t(independentThread);
17   t.detach();
18   std::this_thread::sleep_for(std::chrono::seconds(1));
19   std::cout << "Exiting thread caller.
";
20 }
21 
22 int main()
23 {
24   threadCaller();
25   std::this_thread::sleep_for(std::chrono::seconds(1));
26 }

输出：