multithreading - C++ threads: How do I stop two different functions from being called at the same time? -

i'm new c++ threads , i'm using boost threading. trying figure out how stop 2 functions being called @ same time.

void function1(){    //some task   }  void function2(){    //some other task   }  //both tasks can not run @ same time 

how stop function 1 , function 2 running @ same time?

you should use synchronization mechanism std::mutex shared between them:

std::mutex m;  void function1() {     std::lock(m); }  void function2(){     std::lock(m); }