Re: [Help-smalltalk] Multiple Worlds in GNU Smalltalk

[Gwenael Casaccio]

On 06/19/2011 03:31 PM, Paolo Bonzini wrote:
> On Wed, Jun 15, 2011 at 21:19, Gwenael Casaccio<address@hidden>  wrote:
> > > 293 987 770 (in _gst_interpret)
> > > 53% of time of execution is spent in __tls_get_addr
> > >
> > > It's time to optimize it a bit no ?
> > >
> > > I was thinking of putting in _gst_interpret some variables at least
> > > _gst_mem
>
> You can put all variables in a single struct, and save the address
> (&x) of that struct as a local variable in _gst_interpret.  It's also
> interesting to try -ftls-model=local-exec.  Pick the fastest of the
> two. :-)
>
> Finally, the penalty for static linking ought to be very low.  That's
> the limit to which you should aim.
>
> Paolo

Hehe this is what I've done :)

For the  -ftls-model=local-exe I've tried but I've a link error (-fPIC 
needed), I've added it but it failed too..

I've made another pass on the implementation with helgrind (tool for 
valgrind) I've removed a **lot** of threading issues I can load 20 
images without any crashes :D

There is still an issue with the bootstrapping but when the memory is 
released.

I've implemented a _gst_release_mem function:

 - suspend the process
 - call the GST_ABOUT_TO_QUIT hook
 - scan the ot and make the oop non weak and free the memory
 - free the spaces and the heap

Gwen