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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2021/04/05 17:01:34 UTC

[GitHub] [incubator-nuttx] v01d opened a new issue #3420: ROUND-ROBIN SCHEDULING IN THE SIMULATOR

v01d opened a new issue #3420:
URL: https://github.com/apache/incubator-nuttx/issues/3420


   ```
     Description: Since the simulation is not pre-emptible, you can't use round-robin
                  scheduling (no time slicing).  Currently, the timer interrupts are
                  "faked" during IDLE loop processing and, as a result, there is no
                  task pre-emption because there are no asynchronous events.  This could
                  probably be fixed if the "timer interrupt" were driver by Linux
                  signals. NOTE:  You would also have to implement up_irq_save() and
                  up_irq_restore() to block and (conditionally) unblock the signal.
     Status:      Open
     Priority:    Low
   ```


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[GitHub] [incubator-nuttx] xiaoxiang781216 closed issue #3420: ROUND-ROBIN SCHEDULING IN THE SIMULATOR

Posted by GitBox <gi...@apache.org>.

xiaoxiang781216 closed issue #3420:
URL: https://github.com/apache/incubator-nuttx/issues/3420


   


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[GitHub] [incubator-nuttx] xiaoxiang781216 commented on issue #3420: ROUND-ROBIN SCHEDULING IN THE SIMULATOR

Posted by GitBox <gi...@apache.org>.

xiaoxiang781216 commented on issue #3420:
URL: https://github.com/apache/incubator-nuttx/issues/3420#issuecomment-817206634


   It's supported by enable CONFIG_SIM_WALLTIME_SIGNAL:
   https://github.com/apache/incubator-nuttx/pull/1859


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