Boost.Serialization是否释放加载指针期间创建的内存？

Question

To be specific, I'm referring to the demo in Boost.Serialization tutorial here .

In the above demo, bus_top instances are stored as pointers in bus_route to showcase how serialization of pointers is achieved. However, I observed an interesting behavior, that is, the destructor bus_stop::~bus_stop() is never invoked for the bus_stop objects created by restore_schedule() . I put a break point in bus_stop::~bus_stop() and it was triggered only by the delete statements at the end of main function.

During loading serialized data, objects to initialize pointers are allocated in pointer_iserializer defined in boost/archive/detail/iserializer.hpp , which uses a heap_allocator to allocate space.

They do have a destroy function to release allocated memory in boost/serialization/access.hpp , but seems never got invoked.

Is it correct that Boost.Serialization does not manage the pointers created during loading data?

Answer 1

Conclusions:

• The pointers are stored during loading and the objects they point to are created by new (ie boost::archive::detail::heap_allocator , boost::serialization::access::construct )
• There is also a boost::serialization::access::destroy , but AFAIK, it's not got invoked in boost anywhere.
• It's the user's duty to free the objects allocated by boost::serialization , using delete (or boost::serialization::access::destroy if you like).