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From: Greg Gallagher <greg@embeddedgreg.com>
Date: Thu, 1 Mar 2018 12:02:15 -0500
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Subject: Re: [Xenomai] [NATIVE API] Xenomai native API equivalent for
	clock_gettime
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To: Pintu Kumar <pintu.ping@gmail.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>, Jan Kiszka <jan.kiszka@web.de>, "Xenomai@xenomai.org" <xenomai@xenomai.org>

Are you using Xenomai 2.6 or 3?  If you are using 3 use this guide instead:

https://xenomai.org/documentation/xenomai-3/html/xeno3prm/group__alchemy__timer.html

Post back if nothing there can help, but you may want to loot at the
source for some of the utilities that calculate latency as a example
to work from

-Greg

On Thu, Mar 1, 2018 at 7:37 AM, Pintu Kumar <pintu.ping@gmail.com> wrote:
> Hi,
>
> I have one question about Xenomai native API
>
> 1) What is the native API equivalent for clock_gettime() ?
>
> I have seen this Xenomai native API guide but I could not find it.
> https://xenomai.org/documentation/xenomai-2.6/pdf/native-api.pdf
>
> I have a simple pthread based POSIX application which I converted to native API.
> But for calculating the latency difference I using this in both case:
> clock_gettime(CLOCK_MONOTONIC, &now);
>
> But I observed that if I use only NATIVE skin, I could not see any
> latency difference.
> However, if I use POSIX skin I see the latency difference.
>
> So, I want to replace clock_gettime() with native API to find the
> exact difference with native skin.
>
> Or, if there is any other better way to measurement latency difference
> between POSIX API and native API, please let me know.
>
>
>
> Thank You!
>
> Regards,
> Pintu