[Xenomai-help] delete queues "offline"; /proc/stat

[Xenomai-help] delete queues "offline"; /proc/stat

[Roderik_Wildenburg]

when a xenomai-task crashs which created some queues (rt_queue_create)
and I try to restart the task the creation of the queues will fail as
the queue still exists (error EEXIST == 17). Is there a possibility to
see which queues exist (I did not find a hint in the /proc/xenomai
directory) and to get rid of these queues (or geneally spoken : to get
rid of allocated resources) e.g. with a commandline tool ?

An other question, I would appreciate some help for, is :
How could I determine the CPU-load when a xenomai thread is running? Is
the data provided by /proc/stat valid with xenomai ?

Thank you in advance and best regards
Roderik

Re: [Xenomai-help] delete queues "offline"; /proc/stat

[Jan Kiszka]

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Roderik_Wildenburg@domain.hid wrote:
> when a xenomai-task crashs which created some queues (rt_queue_create)
> and I try to restart the task the creation of the queues will fail as
> the queue still exists (error EEXIST == 17). Is there a possibility to
> see which queues exist (I did not find a hint in the /proc/xenomai
> directory) and to get rid of these queues (or geneally spoken : to get
> rid of allocated resources) e.g. with a commandline tool ?

Native or posix skin? Gilles added per-process resource cleanup to the
posix skin in 2.2-rc3.

Otherwise: the names should be found in /proc/xenomai/registry. Writing
a tiny tool to pick up a name and resources type, attach to it, and then
release it should be straightforward. But I think we will have
per-process cleanup also for other skins in the future.

Stalled RTDM descriptors can be released via "echo DESCR_NO >
/proc/xenomai/rtdm/open_fildes" (I still have to make use of Gilles'
per-process cleanup also for the posix rtdm part...).

> An other question, I would appreciate some help for, is :
> How could I determine the CPU-load when a xenomai thread is running? Is
> the data provided by /proc/stat valid with xenomai ?

Nope, they aren't. We actually need to do something in this direction,
maybe a simple per-xeno-thread execution time accounting if
XENO_OPT_STATS is set.

Jan


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