C++11: At_Quick_Exit

C++11 added the function at_quick_exit to register functions that are called when quick_exit is called, after of which the process ends. Here is an example:

#include <cstdlib>
#include <iostream>

void f1() {std::cout << "f1 called: ";}
void f2() {std::cout << "f2 called: ";}
void f3() {std::cout << "f3 called: ";}

int main()
{
  at_quick_exit(f1);
  at_quick_exit(f2);
  at_quick_exit(f3);
  quick_exit(EXIT_SUCCESS);
  return 0;
}
// Output: f3 called: f2 called: f1 called:

Reference: http://www.cplusplus.com/reference/cstdlib/quick_exit/