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  1. #include <iostream>
  2. #include <thread>
  3. #include <string>
  4. using namespace std;
  5.  
  6. class C {
  7. public:
  8.   int n;
  9.   C(){}
  10.   C(int n) : n(n) {}
  11.   void f(const string &s) { std::cout << "thread: " << s << ", C::f(): this->n = " << this->n << std::endl; }
  12. };
  13.  
  14. void sub(C *obj) {
  15.   /* サブでC::f() を呼び出す */
  16.   obj->f("sub");
  17.   /* obj の中身を変える */
  18.   obj->n = 12345;
  19.   /* サブでC::f() をもう一度呼び出す */
  20.   obj->f("sub");
  21. }
  22.  
  23. int main() {
  24.   /* メインスレッドのオブジェクトポインタ= obj */
  25.   C *obj = new C(54321);
  26.  
  27.   /* sub スレッド起動 */
  28.   thread *subth;
  29.   subth = new thread(sub, obj);
  30.  
  31.   /* 1秒待ち */
  32.   chrono::seconds d(1);
  33.   this_thread::sleep_for(d);
  34.  
  35.   /* メインでC::f() を呼び出す */
  36.   obj->f("main");
  37.  
  38.   /* sub スレッド回収 */
  39.   subth->join();
  40.   delete subth;
  41.  
  42.   delete obj;
  43.   return 0;
  44. }
  45. /* end */
  46.  
  47.  
Success #stdin #stdout 0s 82816KB
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Standard input is empty
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thread: sub, C::f(): this->n = 54321
thread: sub, C::f(): this->n = 12345
thread: main, C::f(): this->n = 12345
https://ideone.com/VvdMRl
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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