c++ - How can let a C++11 thread run several different functions? -

i learning new multi-threading techniques in c++11. tutorials read on web teaching how launch new thread(or several threads) executing function, how join (or detach) thread(or threads) later , how avoid racing conditions using mutex, etc.

but don't see of them showing how make thread execute several functions @ different parts of program. question is, c++11 threads, possible achieve following? if so, how? (giving example great).

void func1(std::vector<int> & data1){ ... }  void func2(std::vector<int> & data2){ ... }  //  main function version int main(){    std::vector<int> data1;     // prepare data1 func1;    std::thread t1(func1, std::ref(data1));     std::vector<int> data2;     // prepare data2 func2;    if (func1 in t1 done){           t1(func2, std::ref(data2));     }     t1.join();    return 0;       } 

and further, if want put the above main function body loop, following. possible? if so, how?

//main function version ii int main(){    std::vector<int> bigdata1;    std::vector<int> bigdata2;     std::thread t1; // can without telling t1 function                     // executed?     for(int i=0; i<10; ++i){        // main thread prepare small chunk smalldata1 bigdata1 func1;         if(t1 ready execute function){t1(func1, std::ref(smalldata1));}         // main thread other stuff, , prepare small chunk smalldata2 bigdata2 func2;         if (func1 in t1 done){              t1(func2, std::ref(smalldata2));         }    }     t1.join();    return 0;       } 

reference cplusplus.com:

default constructor constructs thread object not represent thread of execution.

therefore std::thread t doesn't define executable thread. thread function has provided when creating thread , cannot set afterwards.

for main function version i, have create 2 threads. following:

int main(){     std::vector<int> data1;      // prepare data1 func1;     std::thread t1(func1, std::ref(data1));      std::vector<int> data2;      // prepare data2 func2;     t1.join(); // how wait till func1 done      // have create new thread here func2     std::thread t2(func2, std::ref(data2));      t2.join(); // wait thread2 (func2) end      return 0;       } 

similarly, can put them in loop , alright give main function version ii.