Re: write barrier : check for update pointer

Thanks a lot !

Sébastien


On Wed, 23 Mar 2005 10:36:12 -0500, Etienne Gagnon <[email protected]> wrote:
> Hi Sebastien,
> 
> > ... Thus, I need to know where a
> > pointer update is possible in SableVM. There are certainly many
> > places.
> 
> Actually, there are very few places where pointers located in the heap
> are updated in SableVM.  In the design of SableVM, I had anticipated the
> construction of generational/incremental garbage collectors, and I made
> sure that access to the heap was restricted to few, well-defined
> functions.  This also helps with the maintenance of distinct object
> layouts (traditional/bidirectional).
> 
> So, in the case of heap pointers, you have to care about update to
> reference fields and to arrays of references.  These updates are done by:
> 
> _svmf_put_REFERENCE_field()
> _svmf_set_reference_array_element_no_exception ()
> 
> Have fun!
> 
> Etienne
> 
> --
> Etienne M. Gagnon, Ph.D.            http://www.info2.uqam.ca/~egagnon/
> SableVM:                                       http://www.sablevm.org/
> SableCC:                                       http://www.sablecc.org/
> 
> 
>