C++11 Multi-Threading 01

#include <iostream><thread>void  Thread_fun () {    std::cout<<"  I am the thread function "<<Std::endl;} int Main () {    std::thread T (thread_fun);     // run the thread function, the main thread is blocked here until Thread_fun () execution is complete    return 0 ;}

#include <iostream><thread>void  Thread_fun () {    std::cout<<"  I am the thread function "<<Std::endl;} int Main () {    std::thread T (thread_fun);     // run thread functions without blocking the main    thread return 0 ;}

The console does not display any characters because the main thread is not blocked by using detach to turn on the threads, and the primary thread has finished executing.

#include <iostream><thread>void  Thread_fun () {    std::cout<<"  I am the thread function "<<Std::endl;} int Main () {    std::thread T (thread_fun);     // run thread functions without blocking the main thread ///detach, you can no longer use join          return 0 ;}

Conclusion: After detach, you can no longer use join

#include <iostream>#include<thread>voidThread_fun () {std::cout<<"I am a thread function"<<Std::endl;}intMain () {Std::thread T (thread_fun); T.detach (); //run thread functions without blocking the main thread    if(T.joinable ()) {t.join ();//after detach, you can no longer use join    }    Else{std::cout<<"after detach, you can no longer use join"<<Std::endl; }    return 0;}

Conclusion: You can use Joinable () to determine whether a join ()

C++11 Multi-Threading 01