Re: [Boost-users] [serialization] std::shared_ptr with Boost >= 1.53

Subject: Re: [Boost-users] [serialization] std::shared_ptr with Boost >= 1.53
From: Robert Ramey (ramey_at_[hidden])
Date: 2015-05-04 16:25:54

beet-2 wrote
> Robert,
> 
> there seems to be a misunderstanding here, and I apoligize for not
> having been more clear before. Here is the history again:
> 
> - I have converted a client-server application from using
> boost::shared_ptr to std::shared_ptr
> 
> - The server now needs to serialize a ** std::shared_ptr ** and the
> client wants to receive a ** std::shared_ptr **
> 
> - No boost::shared_ptr is involved anymore, and the problem is NOT the
> conversion from a boost::shared_ptr - based archive to a std::shared_ptr
> archive
> 
> - Serialization of std::shared_ptr works with Boost 1.58, but isn't
> supported by Boost 1.53
> 
> - I need to make it work with older versions of Boost than 1.58, so I
> need to "teach" 1.53 to (de-)serialize a std::shared_ptr

I can't see why you can't just handle use versioning of serializable classes
as described in the manual.

struct myclass {
  std::shared_ptr<Sometype> m_x; // used to use boost::shared_ptr<Sometype>
  ...
  template<class Archive>
  serialize(Archive & ar, const unsigned int version){
    if(version < 1){
        boost::shared_ptr t;
        ar & t;
        m_x = t;
    }
    else {
        ar & m_x;
    };
};

BOOST_SERIALIZATION_CLASS_VERSION(myclass, 1);

OK - I see the problem, matching up the matching pointers.
Look at how boost::shared_ptr and std::shared_ptr are implemented
via serialization helper and look at the decimation on serialization 
helper.  

This might work for you

Robert Ramey

--
View this message in context: http://boost.2283326.n4.nabble.com/serialization-std-shared-ptr-with-Boost-1-53-tp4674950p4675075.html
Sent from the Boost - Users mailing list archive at Nabble.com.