Strong APA Scheduler : First Draft

[Richi Dubey]

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
<https://richidubey.github.io/Strong-APA-Documentation/html/schedulerstrongapa_8c_source.html#l00179>
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

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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>> devel at rtems.org
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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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