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From: Niklas Holsti <niklas.holsti@tidorum.invalid>
Newsgroups: comp.lang.ada
Subject: Re: longest path through a task
Date: Thu, 28 May 2015 12:04:03 +0300
Organization: Tidorum Ltd
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Date: 2015-05-28T12:04:03+03:00
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On 15-05-28 09:54 , jan.de.kruyf@gmail.com wrote:
> On Wednesday, May 27, 2015 at 10:09:22 PM UTC+2, Niklas Holsti
> wrote:
>> What kind of ARM are you using? A classic ARM7, or a Cortex? "M"
>> series?
>
> Thank you Niklas. CortexM4 since Ada has a cross environment for it.
> I dont think it will get serious. I dumped the multithread stuff and
> made a single-thread / multitask runtime (slow in Ada unfortunately,
> but not as slow as multi-threading and interrupts.

Did you get some numbers for the task-switch and interrupt-latency times 
with the Ravenscar kernel? What does "slow" mean, in numbers?

> I did a bit of internet trawling last night to find out what they did
> for the Xoberon environment I posted about in the language shootout.
> They restricted the language further, and added a bound on number of
> loop executions. The bound  you would then give a value in the
> program.
   ...
> p.s. Ah I see it is your bread and butter, very interesting :)

Well, I tried to make it my bread and butter, but failed. So I'm back 
working for my former employer and doing real applications, not tools.

-- 
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
       .      @       .