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From: Julien Blanc <julien.blanc@sprinte.eu>
To: "Xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: [Xenomai] Canonical way to differentiate between NPTL / Cobalt threads
Date: Wed, 28 Mar 2018 16:00:44 +0200	[thread overview]
Message-ID: <1522245644.2732.13.camel@sprinte.eu> (raw)

We're using a mix of regular NPTL posix threads and RT cobalt threads
in our application, using XDDP communication between them.

In a few places, we need to identify the calling context, ie, whether
we're being called from a cobalt RT thread or from a regular NPTL
thread, and act accordingly.

My understanding is that calling pthread_getschedparam and checking
that the returned policy is SCHED_FIFO does the job.

* is it correct ? Or are they some corner cases not covered by this
test ?
* is it the canonical way, or is there another one ? (maybe cheaper -
since this call will do two calls in case of a posix thread, there must
be a cheaper way to detect the running context).

Regards,

Julien




             reply	other threads:[~2018-03-28 14:00 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-28 14:00 Julien Blanc [this message]
2018-03-28 14:16 ` [Xenomai] Canonical way to differentiate between NPTL / Cobalt threads Philippe Gerum
2018-03-28 15:00   ` Julien Blanc

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