[boost] Re: Re: shifted_ptr<> w/ lock mechanism

From: Philippe A. Bouchard (philippeb_at_[hidden])
Date: 2003-01-30 16:41:04

"Larry Evans" <jcampbell3_at_[hidden]> wrote in message
news:3E399832.1020709_at_prodigy.net...
> Philippe A. Bouchard wrote:
>
> [snip]
> >
> > I guess it would also be possible to allocate a "shifted object" into
some
> > specific memory page, so operator delete will be able to quickly detect
> > weither the object is shifted or not.  This way it would be possible to
> > overload the main operator new.
> >
>
> I think this is what BW does to distinguish between pointers produced by
> GC_malloc_uncollectable and gc_malloc.  Also, I think cmm does something
> similar (see ftp://ftp.di.unipi.it/pub/Papers/attardi/SPE.ps.gz ).

Oh no, don't tell me GC_malloc was working this way ;)

BTW gc_header *must* have (ip_descriptor *) ?

Philippe A. Bouchard