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  1. #include <iostream>  
  2. #include <cstdlib>
  3. #include <ctime>
  4. #include <thread>
  5.  
  6. class sampleClass {
  7. public:
  8.     int x = rand() % 100;
  9.     sampleClass() {std::cout << "constructor called, x=" << x <<     std::endl;}
  10.     sampleClass(const sampleClass &SC) {std::cout << "copy constructor called, x=" << x << std::endl;}
  11.     ~sampleClass() {std::cout << "destructor called, x=" << x << std::endl;}
  12.     void add_to_x() {x += rand() % 3;}
  13. };
  14.  
  15. void sampleThread(sampleClass& SC) {
  16.     for (int i = 0; i < 1e8; ++i) { //give the thread something to do
  17.         SC.add_to_x();
  18.     }
  19.     std::cout << "thread finished, x=" << SC.x << std::endl;
  20. }
  21.  
  22. int main() {
  23.     srand (time(NULL));
  24.     sampleClass SC;
  25.     std::thread t1 (sampleThread, std::ref(SC));
  26.     std::cout << "thread spawned" << std::endl;
  27.     t1.join();
  28.     std::cout << "thread joined" << std::endl;
  29. }
  30.  
Success #stdin #stdout 3.61s 11656KB
comments (?)
stdin
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Standard input is empty
stdout
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constructor called, x=95
thread spawned
thread finished, x=100000605
thread joined
destructor called, x=100000605
https://ideone.com/RBUAaC
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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