On Tue, Feb 2, 2021 at 12:19 PM Sebastian Huber < sebastian.hu...@embedded-brains.de> wrote:
> On 02/02/2021 16:56, Gedare Bloom wrote: > > > > > > > On Tue, Feb 2, 2021 at 8:42 AM Sebastian Huber > > <sebastian.hu...@embedded-brains.de > > <mailto:sebastian.hu...@embedded-brains.de>> wrote: > > > > On 02/02/2021 16:37, Gedare Bloom wrote: > > > > > -.. rubric:: NOTES: > > > +.. rubric:: CONSTRAINTS: > > > > > > -This directive is strictly local and does not impact task > > scheduling. > > > > > > > > > I may have missed the discussion, but this note is being removed > > > without being added elsewhere. > > > > > > Is it implied that all functions are local and do not impact task > > > scheduling, unless otherwise constrained? > > No, I replaced the above with below: > > > > > > +The following constraints apply to this directive: > > > + > > > +* The directive is implemented by a macro and may be called > > from > > > within C/C++ > > > + constant expressions. In addition, a function > implementation > > > of the > > > + directive exists for bindings to other programming > languages. > > > > > I could also add this: > > > > * The directive will not cause the calling task to be preempted. > > > > I think that will help for clarity, perhaps. It is good to know which > > rtems_ services can/cannot preempt > Ok, I will try to add at least one context and at least one preemption > constraint to each directive. > > > > From my point of view it was clear that something which "may be > > called > > from within C/C++ constant expressions" cannot impact task > scheduling. > > > > > > may is not must. If you call it from a non-constant expression it > > still will not preempt. > > > > Also, I think it is a bit odd to say "called from within" a constant. > > maybe "used from within" is better? You don't actually make a call > > when it is constant. > I would keep the "called from within". It is called by the compiler and > not the processor. In C++ you nowadays have a lot of constexpr functions > (or templates). > > ok > -- > embedded brains GmbH > Herr Sebastian HUBER > Dornierstr. 4 > 82178 Puchheim > Germany > email: sebastian.hu...@embedded-brains.de > phone: +49-89-18 94 741 - 16 > fax: +49-89-18 94 741 - 08 > > Registergericht: Amtsgericht München > Registernummer: HRB 157899 > Vertretungsberechtigte Geschäftsführer: Peter Rasmussen, Thomas Dörfler > Unsere Datenschutzerklärung finden Sie hier: > https://embedded-brains.de/datenschutzerklaerung/ > >
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