Re: [Boost-users] [Serialization] Zero-sized arrays

Subject: Re: [Boost-users] [Serialization] Zero-sized arrays
From: Roland Kaminski (kaminski_at_[hidden])
Date: 2009-08-07 03:14:45

I tried that too. But I need the size in the new operator and this requires 
reading some global variable. It works but is not very "elegant" either.

Btw: I had to define the struct has_new_operator because I needed two new 
operators, which led to an ambigous call in has_new_operator_impl.
namespace boost
{
    template<>
    struct has_new_operator<Derived> : public true_type { };
}

On Thursday 06 August 2009 23:14:45 Robert Ramey wrote:
> Note that the library now supports serialization of pointers to classes
> which have a new operator defined.  Wouldn't that do the trick?
>
> Robert Ramey
>
> Matthias Troyer wrote:
> > I see your point. Here is one thing you could do: you could wrap your
> > pointer in a special class and have the serialize function of that
> > class do the allocation, loading of the object, and registration of
> > the pointer for you. Would that work?
> >
> > Matthias
> >
> > On 4 Aug 2009, at 03:04, Roland Kaminski wrote:
> >> I do not see how these could be used for this case.
> >> load_construct_data
> >> provides a pre-allocated pointer that can then be initialized. And
> >> after
> >> save_construct_data is called the pointer is already registered but
> >> without
> >> the additional size information. Do I miss something?
> >>
> >> Regards,
> >> Roland
> >>
> >> On Tuesday 04 August 2009 02:38:01 Matthias Troyer wrote:
> >>> On 3 Aug 2009, at 15:34, Roland Kaminski wrote:
> >>>> The code is full of such "dangerous" optimizations but most of them
> >>>> can be
> >>>> somehow handled. It is optimized to be as cache-friendly as
> >>>> possible that is
> >>>> why I would like to not remove this one.
> >>>> A hook during deserialization would be exactly what I need. I could
> >>>> also
> >>>> imagine other worarounds but all of them are very ugly.
> >>>
> >>> Look at this part of the documentation:
> >>>
> >>>
> >>> http://www.boost.org/doc/libs/1_39_0/libs/serialization/doc/serializati
> >>>on.h tml#constructors
> >>>
> >>> and overload load_construct_data and save_construct_data for your
> >>> type
> >>>
> >>> Matthias
> >>>
> >>> _______________________________________________
> >>> Boost-users mailing list
> >>> Boost-users_at_[hidden]
> >>> http://lists.boost.org/mailman/listinfo.cgi/boost-users
> >>
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