fork(4) download 
  1.  
  2.  
  3. #include <iostream>
  4. #include <cstdio>
  5. #include <cstdlib>
  6. #include <queue>
  7. #include <vector>
  8. #include <list>
  9. #include <functional>
  10. #include <memory>
  11.  
  12. struct Son {
  13.     // some data that we want to point to
  14.     ~Son(){printf("Bye Son\n");}
  15. };
  16.  
  17. struct Father {
  18.     Son son;
  19.     Father(){}
  20.     ~Father(){printf("Bye Father\n");}
  21. };
  22.  
  23. int main(){
  24.     std::shared_ptr<Father> father = std::make_shared<Father>();
  25.     std::shared_ptr<Son> son(father, &father->son);
  26.     printf("%d\n", father.use_count());
  27.     printf("%d\n", son.use_count());
  28.     father.reset();
  29.     printf("%d\n", father.use_count());
  30.     printf("%d\n", son.use_count());
  31.     printf("%d\n", father.owner_before(son));
  32.     printf("%d\n", son.owner_before(father));
  33. }
  34.  
Success #stdin #stdout 0s 5620KB
comments (?)
stdin 
Standard input is empty
stdout 
2
2
0
1
1
0
Bye Father
Bye Son
https://ideone.com/gr3ZSH
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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