Re: [ECOS] Round robin scheduler question

["sandeep" <sandeep at codito dot com>]

>     HAL_LSBIT_INDEX(index, queue_map);
>
>     Cyg_RunQueue *queue = &run_queue[index];
>
>     CYG_ASSERT( !queue->empty(), "Queue for index empty");
>
>     Cyg_Thread *thread = queue->get_head();
>
> +    if ( thread != current) {
> +            cyg_priority pri    = current->priority;
> +            Cyg_Scheduler *sched = &Cyg_Scheduler::scheduler;
> +            Cyg_RunQueue *current_queue = &sched->run_queue[pri];
> +            current_queue->rotate();
> +    }
>
> #endif

if timeslice was over earlier then timeslice_cpu would have already got called
before this schedule call. in that case rotate will be done twice, and outcomes
could be many -- breaking of round-robin nature at that level, some thread not
getting chance to execute ever even being in runqueue all the times.
please correct me, if I got it wrong.
------
sandeep



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