Solve C++11 shared_ptr cycle reference through reset member shared_ptrs in class destructor?

We know that C++11 has shared_ptr and it will has cycle reference issue.

I try to solve this issue by reset all member shared_ptrs in class destructor.

Example-1 share.cpp :

#include <iostream>
#include <memory>
#include <string>

class A;
class B;

struct A {
  A(const std::string &a_name) : name(a_name), b(nullptr) {
    std::cout << name << " A::A b.get:" << b.get()
              << ", b.use_count:" << b.use_count() << std::endl;
  }
  ~A() {
    std::cout << name << " A::~A b.get:" << b.get()
              << ", b.use_count:" << b.use_count() << std::endl;
  }
  std::string name;
  std::shared_ptr<B> b;
};

struct B {
  B(const std::string &a_name) : name(a_name), a(nullptr) {
    std::cout << name << " B::B a.get:" << a.get()
              << ", a.use_count:" << a.use_count() << std::endl;
  }
  ~B() {
    std::cout << name << " B::~B a.get:" << a.get()
              << ", a.use_count:" << a.use_count() << std::endl;
  }
  std::string name;
  std::shared_ptr<A> a;
};

int main(void) {
  std::shared_ptr<A> a1(new A("a1"));
  std::shared_ptr<B> b1(new B("b1"));
  a1->b = b1;
  b1->a = a1;
  {
    std::shared_ptr<A> a2(new A("a2"));
    std::shared_ptr<B> b2(new B("b2"));
    a2->b = b2;
    b2->a = a2;
    a1->b = b2;
    b1->a = a2;
    a2->b = b1;
    b2->a = a1;
  }
  {
    std::shared_ptr<A> a3(new A("a3"));
    std::shared_ptr<B> b3(new B("b3"));
    a3->b = b1;
    b3->a = a1;
    a1->b = b3;
    b1->a = a3;
    a3->b = b3;
    b3->a = a3;
  }
  return 0;
}

Run: clang++ -std=c++11 share.cpp && ./a.out:

a1 A::A b.get:0x0, b.use_count:0
b1 B::B a.get:0x0, a.use_count:0
a2 A::A b.get:0x0, b.use_count:0
b2 B::B a.get:0x0, a.use_count:0
a3 A::A b.get:0x0, b.use_count:0
b3 B::B a.get:0x0, a.use_count:0
b2 B::~B a.get:0x7ff393405900, a.use_count:3
a2 A::~A b.get:0x7ff393405950, b.use_count:3
b1 B::~B a.get:0x7ff393405a40, a.use_count:2
a1 A::~A b.get:0x7ff393405a90, b.use_count:2

We can see there's memory leak due to cycle reference. So my idea is: I reset all member shared_ptrs in all my classes destructors. Then we have Example-2 share.cpp:

#include <iostream>
#include <memory>
#include <string>

class A;
class B;

struct A {
  A(const std::string &a_name) : name(a_name), b(nullptr) {
    std::cout << name << " A::A b.get:" << b.get()
              << ", b.use_count:" << b.use_count() << std::endl;
  }
  ~A() {
    std::cout << name << " A::~A before reset b.get:" << b.get()
              << ", b.use_count:" << b.use_count() << std::endl;
    b.reset();
    std::cout << name << " A::~A after reset b.get:" << b.get()
              << ", b.use_count:" << b.use_count() << std::endl;
  }
  std::string name;
  std::shared_ptr<B> b;
};

struct B {
  B(const std::string &a_name) : name(a_name), a(nullptr) {
    std::cout << name << " B::B a.get:" << a.get()
              << ", a.use_count:" << a.use_count() << std::endl;
  }
  ~B() {
    std::cout << name << " B::~B before reset a.get:" << a.get()
              << ", a.use_count:" << a.use_count() << std::endl;
    a.reset();
    std::cout << name << " B::~B after reset a.get:" << a.get()
              << ", a.use_count:" << a.use_count() << std::endl;
  }
  std::string name;
  std::shared_ptr<A> a;
};

int main(void) {
  std::shared_ptr<A> a1(new A("a1"));
  std::shared_ptr<B> b1(new B("b1"));
  a1->b = b1;
  b1->a = a1;
  {
    std::shared_ptr<A> a2(new A("a2"));
    std::shared_ptr<B> b2(new B("b2"));
    a2->b = b2;
    b2->a = a2;
    a1->b = b2;
    b1->a = a2;
    a2->b = b1;
    b2->a = a1;
  }
  {
    std::shared_ptr<A> a3(new A("a3"));
    std::shared_ptr<B> b3(new B("b3"));
    a3->b = b1;
    b3->a = a1;
    a1->b = b3;
    b1->a = a3;
    a3->b = b3;
    b3->a = a3;
  }
  return 0;
}

Run clang++ -std=c++11 share.cpp && ./a.out:

a1 A::A b.get:0x0, b.use_count:0
b1 B::B a.get:0x0, a.use_count:0
a2 A::A b.get:0x0, b.use_count:0
b2 B::B a.get:0x0, a.use_count:0
a3 A::A b.get:0x0, b.use_count:0
b3 B::B a.get:0x0, a.use_count:0
b2 B::~B before reset a.get:0x7fdf23405900, a.use_count:3
b2 B::~B after reset a.get:0x0, a.use_count:0
a2 A::~A before reset b.get:0x7fdf23405950, b.use_count:3
a2 A::~A after reset b.get:0x0, b.use_count:0
b1 B::~B before reset a.get:0x7fdf23405a40, a.use_count:2
b1 B::~B after reset a.get:0x0, a.use_count:0
a1 A::~A before reset b.get:0x7fdf23405a90, b.use_count:2
a1 A::~A after reset b.get:0x0, b.use_count:0

We see the cycle reference is fixed!

Can I use such a design pattern to solve shared_ptr cycle reference issue in C++ project ? e.g. I just reset all the shared_ptrs in the classes destructors in a C++ project.