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From: Pierre FICHEUX <pierre.ficheux@smile.fr>
To: Philippe Gerum <rpm@xenomai.org>
Cc: Julien Blanc <julien.blanc@sprinte.eu>,
	Pierre FICHEUX via Xenomai <xenomai@xenomai.org>
Subject: Re: rt_task_inquire() equivalent for POSIX ?
Date: Thu, 7 Nov 2019 10:03:52 +0100	[thread overview]
Message-ID: <CAFc1U0trRygoKsURWkN1VeVVqh=XGwGp-CBXZmYfcnp8480P+g@mail.gmail.com> (raw)
In-Reply-To: <956fff32-9301-4b91-14b7-b2583f12508c@xenomai.org>

Thx a lot, works fine with cobalt_thread_pid() !

regards



Le jeu. 7 nov. 2019 à 09:44, Philippe Gerum <rpm@xenomai.org> a écrit :

> On 2019-11-07 08:56, Julien Blanc via Xenomai wrote:
> > Le jeudi 07 novembre 2019 à 06:47 +0100, Pierre FICHEUX via Xenomai a
> > écrit :
> >> I've tried it but got the pid of the "main" thread not the RT one
> >> (that's
> >> normal...).
> >>
> >
> > extern "C"
> > {
> >         int cobalt_thread_pid(pthread_t);
> > }
> >
> > int tid = cobalt_thread_pid(pthread_self())
> >
> > but i’m not sure what you mean by the cobalt thread id vs posix thread
> > id. IIRC they have the same value (ie, syscal(__NR_gettid) would give
> > the same value (for rt threads), maybe at the expense of a mode
> > switch).
>
> This may be worth a read for context:
> http://man7.org/linux/man-pages/man2/gettid.2.html
>
> cobalt_thread_pid() translates POSIX thread identifiers to kernel thread
> identifiers some Linux-specific calls need (e.g. thread-directed signals).
>
> --
> Philippe.
>


-- 

Pierre FICHEUX -/- CTO Smile ECS, France -\- pierre.ficheux@smile.fr
                             http://www.smile.fr
                             https://smile.eu/fr/offres/embarque-iot
I would love to change the world, but they won't give me the source code

  reply	other threads:[~2019-11-07  9:03 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-06 21:04 rt_task_inquire() equivalent for POSIX ? Pierre FICHEUX
2019-11-07  0:20 ` Lowell Gilbert
2019-11-07  5:47   ` Pierre FICHEUX
2019-11-07  7:56     ` Julien Blanc
2019-11-07  8:44       ` Philippe Gerum
2019-11-07  9:03         ` Pierre FICHEUX [this message]
2019-11-07  8:04 ` Steve Freyder

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