Strong APA Scheduler : First Draft

[Gedare Bloom]

On Fri, Jul 24, 2020 at 8:20 AM Richi Dubey <richidubey at gmail.com> wrote:
>
> Hi,
>
> With Dr. Butterfield's help, I've made the changes to implement the FIFO Queue using chain. I am not accustomed to coding for embedded systems, so I am not completely sure if I should be using malloc or not.
>
> Someone, please review the following changes:
>
> FIFO Implementaion and Queue traversal: https://richidubey.github.io/Strong-APA-Documentation/html/schedulerstrongapa_8c_source.html#l00159
>
> The structure I have defined to be used with Chain_Control: https://richidubey.github.io/Strong-APA-Documentation/html/structCPU.html
>
I can't fully review yet. You should not be using malloc.

I can review for you on github if you like, if you make a pull request
against the base commit of your rtems fork.

> Thank you,
> Richi.
>
> On Fri, Jul 24, 2020 at 11:28 AM Richi Dubey <richidubey at gmail.com> wrote:
>>
>> Hi Andrew,
>>
>> Your suggestion helps and I am going to work on it today. Thank you.
>>
>> On Thu, Jul 23, 2020 at 8:14 PM Andrew Butterfield <Andrew.Butterfield at cs.tcd.ie> wrote:
>>>
>>> Hi Richi,
>>>
>>>  a quick answer to 1 below
>>>
>>> On 23 Jul 2020, at 15:20, Richi Dubey <richidubey at gmail.com> wrote:
>>> 1)Both the algorithms require the use of a FIFO Queue to support the insert and dequeue operations.
>>>
>>> I believe we can use chains and use the chain_append() and combination of _Chain_Extract  and _Chain_First or just _Chain_First and node->next to achieve the FIFO requirements.
>>>
>>>
>>>
>>> You might want to look at chain_get() - it removes the first element, so does a FIFO protocol in tandem with chain_append()
>>>
>>> Regards,
>>>   Andrew
>>>
>>> _______________________________________________
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>>>
>>>
>>> --------------------------------------------------------------------
>>> Andrew Butterfield     Tel: +353-1-896-2517     Fax: +353-1-677-2204
>>> Lero at TCD, Head of Software Foundations & Verification Research Group
>>> School of Computer Science and Statistics,
>>> Room G.39, O'Reilly Institute, Trinity College, University of Dublin
>>>                          http://www.scss.tcd.ie/Andrew.Butterfield/
>>> --------------------------------------------------------------------
>>>
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