Got it. Thank you for the clarification. On Fri, Mar 26, 2021 at 8:32 PM Gedare Bloom <ged...@rtems.org> wrote:
> On Thu, Mar 25, 2021 at 11:30 PM Richi Dubey <richidu...@gmail.com> wrote: > > > > Thanks for your quick response! > > > >> Each scheduler has its own lock. There are a couple of more locks > involved. > > > > I understand. > > > > I backtracked a little and found that we have: > > _Thread_State_acquire_critical( the_thread, lock_context ); > > > > to lock access to thread-specific variables. > > > > _Scheduler_Acquire_critical( scheduler, &lock_context > > > > to lock access to the current scheduler-specific data structures. > > > > What other locks do we have related to schedulers? > > > > By definition, all locks relate to scheduling. The other major one > though would be _Thread_Dispatch_disable_critical and relatives like > _Thread_queue_Dispatch_disable, if you think of dispatching as part of > scheduling. However, the two operations are a little bit different. > Scheduling is selecting the next thread(s) to run, while dispatching > is actually making them run. > > > > On Wed, Mar 24, 2021 at 1:03 PM Sebastian Huber < > sebastian.hu...@embedded-brains.de> wrote: > >> > >> On 24/03/2021 08:07, Richi Dubey wrote: > >> > >> > How does RTEMS handle cases where two different cores access > >> > scheduler-related functions at the same time? > >> Each scheduler has its own lock. There are a couple of more locks > involved. > >> > For ex., Can they access (or modify) the Scheduler_strong_APA_Context > >> > < > https://git.rtems.org/rtems/tree/cpukit/include/rtems/score/schedulerstrongapa.h#n61 > > > >> > at the same time? > >> No, unless we have a bug. > >> > >> -- > >> 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/ > >> > > _______________________________________________ > > devel mailing list > > devel@rtems.org > > http://lists.rtems.org/mailman/listinfo/devel >
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