Re: [Boost-users] [serialization][1.49]How to serializeshared_ptr<void>?

Subject: Re: [Boost-users] [serialization][1.49]How to serializeshared_ptr<void>?
From: Robert Ramey (ramey_at_[hidden])
Date: 2012-05-19 17:48:52

harr999y wrote:
> Hi,:)
> I'm doing saving the shared_ptr<void>,but it can't as
> "boost::serialization::tracking_level< T >::value !=
> boost::serialization::track_never".
> And I know if it's shared_ptr<int>,I can use strong_typedef.But for
> the void,the strong_typedef cannot work.
> So can you give me some hint?

hmmm - shared_ptr<T>  is basically a wrapper around T *.

Given

X x;
X * xptr = & x;
shared_ptr<X> sx(x);

ar << sx

Is more or less equivalent to:

serialize x
serialize xptr;
serialize sx

So if X is void the whole thing makes no sense and can't work.

You really need to think about what void * means in your program.
Usually it's just a place holder for any kind of pointer.  Maybe
you want to consider using boost::any instead of void *,  (I don't
know if serialization has been implemented for boost::any) or
perhaps boost::variant which DOES have serialization implemented.

Robert Ramey

>
> Thanks,
>
> Harry