Re: [Boost-users] Serialization and null pointers

From: boost_at_[hidden]
Date: 2005-07-06 15:51:31

I was using my own home-grown one.  I wrote it before I started using boost 
though.  I decided to try it out with boost::shared_ptr and here is what I 
got:

c:\Boost\boost_1_32_0\boost\serialization\access.hpp(106): error C2039: 
'serialize' : is not a member of 'boost::shared_ptr<T>'

I tried searching on boost shared_ptr serialize but came up empty.  Any 
suggestions?  Thanks.

----- Original Message -----
From: "Robert Ramey" <ramey_at_[hidden]>
To: boost-users_at_[hidden]
Date: Tue, 5 Jul 2005 20:18:00 -0700
Subject: Re: [Boost-users] Serialization and null pointers

> boost_at_[hidden] wrote:
> > Thanks.  If I changed the order of the members being serialized it
> > worked fine.  Weird.
> >
> > However, I am running into a problem.  I am using reference counted
> > Smart Pointers.  If I serialize the reference counter, then when it
> > is loaded it will likely contain too large of a reference count
> > because there were more objects referencing the pointer when it was
> > saved than when it was loaded. However, it works fine it just doesn't
> > properly delete the objects because the reference count never reaches
> > 0.
> >
> > If I don't serialize the reference count then the objects try to
> > delete themselves while boost is loading them from the file.  I'm
> > guessing because of the order everything happens, the final
> > destination isn't increasing the reference count until after boost
> > already dereferences it.
> >
> > Any suggestions?
> 
> I'm not sure which reference counted Smart Pointer you're using.  If you use
> the boost smart_ptr, its already has serializaiton done.  If you want to add
> serialization to your own Smart Pointer, you can look at how it was done for
> the boost smart pointer - now there are two versions so you have lots of
> ideas available.
> 
> Robert Ramey
> 
> 
> 
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