[Gcl-devel] Re: [Axiom-developer] Re: counting allocated bytes

[Camm Maguire]

Greetings!

Shouldn't this function be total-bytes-used on second thought?

Stephen Wilson <address@hidden> writes:

> Hello Camm,
> 
> Thank you for including this change!
> 
> [...]
> > 2) The algorithm needs correcting when sgc is on -- is one interested
> >    in the active read-write set, of the static read-only set here?
> 
> My understanding of stratified gc is that the read-only set is what
> counts here, but I would need to delve into the details of GCL's
> implementation before I could make a conclusive statement in this
> regard.
> 

Actually a hybrid:

current algorithm counts
all used cells
all allocated contiguous pages
read-write only used relocatable blocks.

Take care,

> 


> To save you some typing, attached is a very terse patch against
> si-defs.texi.  Not to sure what else one needs to say about this
> function.
> 
> 
> Thanks again,
> Steve
> 
> 
> --- si-defs.texi      2007-07-11 17:06:05.000000000 -0400
> +++ si-defs.texi.smw  2007-07-11 17:05:16.000000000 -0400
> @@ -375,7 +375,14 @@
>  
>  
>  @end deffn
> address@hidden TOTAL-BYTES-ALLOCATED ()
> +Package:SI
> +
> +GCL specific: Returns the total number of bytes allocated by GCL since
> +the image was started.
>  
> +
> address@hidden defun
>  @defun *MAKE-SPECIAL (symbol)
>  Package:SI
>  
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-- 
Camm Maguire                                            address@hidden
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