sharedptrloop.c shared_ptr reference loop demo 1
Posted by Anonymous on Thu 21st Nov 2024 09:57
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$ cat sharedptrloop.c
#include <iostream>
#include <memory>
#include <mutex>
#include <thread>

class myobj
{
public:
        std::shared_ptr<myobj> ref_p = NULL;
        myobj() {
                std::cout << "myobj begin" << std::endl;
        }
        ~myobj() {
                std::cout << "myobj DIE" << std::endl;
        }
};

int main(int ac, char *av[])
{
        std::shared_ptr<myobj> p = std::make_shared<myobj>();

        p->ref_p = p;

// without |reset()| the destructor of |p| will never be called
//      p->ref_p.reset();

        return EXIT_SUCCESS;
}