[m-rev.] for review: disable concurrency in non .par LLDS grades

[Peter Wang]

On Thu, 21 Aug 2025 15:48:34 +1000 Julien Fischer <jfischer at opturion.com> wrote:
> On Thu, 21 Aug 2025 at 13:24, Peter Wang <novalazy at gmail.com> wrote:
> >
> > On Thu, 21 Aug 2025 13:05:54 +1000 Julien Fischer <jfischer at opturion.com> wrote:
> > > For review by Peter.
> > >
> > > -----------------------------------------------
> > >
> > > Disable concurrency in non .par LLDS grades.
> > >
> > > The non .par LLDS grades currently "support" concurrency. However, this support
> > > is really on usable with a small few benchmark programs, due to the inability
> > > of the implementation to switch threads if the executing thread blocks. Disable
> > > this capability by causing spawn/3 to abort if used in non .par LLDS grades.
> > >
> > > library/thread.m:
> > >     Make the above change to spawn/3.
> > >
> > > compiler/globals.m:
> > >     Update the code that checks if the current grade supports concurrency.
> >
> > Mention it in NEWS.
> >
> > The help text for --parallel might need to be updated.
> 
> There's a revised diff below

That's fine.

> 
> > That should be fine, but there may be other documentation to update.
> 
> Given that there other changes in this area in the pipeline, it's probably not
> terribly important that it all be updated now.

Right.

Peter