[Xenomai-help] xenomai, skins, design and a practical approach

[Xenomai-help] xenomai, skins, design and a practical approach

[haknick]

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Hey everybody,

A friend of mine and I have written a paper on: "Xenomai as a Linux RT  
framework, Skins design and
a practical approach to its architecture"

Was thinking this could be quite useful to others and wanted to share with  
the community, so maybe here: http://www.xenomai.org/index.php/Publications
or wherever it makes sense.

Any suggestions ?

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Re: [Xenomai-help] xenomai, skins, design and a practical approach

[Vera Snowball]

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Sounds good to me. Does it include by any chance a chapter on how to
work with Xenosim simulator? Looks like it is the only simulator which
can be used for debugging with valgrind. If you made it work, it would
be great to know how.

 

Thanks a lot,

Vera

 

________________________________

From: xenomai-help-bounces@domain.hid [mailto:xenomai-help-bounces@domain.hid]
On Behalf Of haknick@domain.hid
Sent: Wednesday, May 19, 2010 12:24 PM
To: xenomai@xenomai.org
Subject: [Xenomai-help] xenomai, skins, design and a practical approach

 

Hey everybody,

A friend of mine and I have written a paper on: "Xenomai as a Linux RT
framework, Skins design and
a practical approach to its architecture"

Was thinking this could be quite useful to others and wanted to share
with the community, so maybe here:
http://www.xenomai.org/index.php/Publications
or wherever it makes sense.

Any suggestions ?


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[Xenomai-help] Fwd: xenomai, skins, design and a practical approach

[Eric Noulard]

incidentally dropped the list.
Re-sending.

---------- Forwarded message ----------
From: Eric Noulard <eric.noulard@domain.hid>
Date: 2010/5/19
Subject: Re: [Xenomai-help] xenomai, skins, design and a practical approach
To: haknick@domain.hid


2010/5/19  <haknick@domain.hid>:
> Hey everybody,
>
> A friend of mine and I have written a paper on: "Xenomai as a Linux RT
> framework, Skins design and
> a practical approach to its architecture"
>
> Was thinking this could be quite useful to others and wanted to share with
> the community, so maybe here: http://www.xenomai.org/index.php/Publications
> or wherever it makes sense.
>
> Any suggestions ?

May be you can send here on the list a link to the actual paper?
This way we can read it and give you more valuable feedback.

Then I would find adding it to the publication section a good idea
but I this is a xenomai.org admin site decision.



--
Erk
Membre de l'April - « promouvoir et défendre le logiciel libre » -
http://www.april.org



-- 
Erk
Membre de l'April - « promouvoir et défendre le logiciel libre » -
http://www.april.org

Re: [Xenomai-help] xenomai, skins, design and a practical approach

[haknick]

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On May 19, 2010 4:03pm, Eric Noulard <eric.noulard@gmail.com> wrote:
> 2010/5/19 haknick@gmail.com>:

> > Hey everybody,

> >

> > A friend of mine and I have written a paper on: "Xenomai as a Linux RT

> > framework, Skins design and

> > a practical approach to its architecture"

> >

> > Was thinking this could be quite useful to others and wanted to share  
> with

> > the community, so maybe here:  
> http://www.xenomai.org/index.php/Publications

> > or wherever it makes sense.

> >

> > Any suggestions ?



> May be you can send here on the list a link to the actual paper?

> This way we can read it and give you more valuable feedback.



> Then I would find adding it to the publication section a good idea

> but I this is a xenomai.org admin site decision.







> --

> Erk

> Membre de l'April - « promouvoir et défendre le logiciel libre » -

> http://www.april.org


Thanks,

Makes sense, I couldn't find a way to contact them though.

Here's the link: http://albsource.com/xenomai.pdf

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Re: [Xenomai-help] xenomai, skins, design and a practical approach

[Gilles Chanteperdrix]

Vera Snowball wrote:
> Sounds good to me. Does it include by any chance a chapter on how to
> work with Xenosim simulator? Looks like it is the only simulator which
> can be used for debugging with valgrind. If you made it work, it would
> be great to know how.

Xenosim requires an old 32 bits installation to be compiled, so, it may
not be straightforward to use it.

If what you want to debug with valgrind is your application and not
Xenomai, you can arrange to compile your application for Linux pthreads,
and you will be able to debug it. If you are using the POSIX skin, it
should be easy. If you are using a legacy skin, such as vxworks, psos,
uitron, etc... we already have support for running them on plain linux
with the xenomai-solo package. Only if you are using the native skin it
will be a little harder.

-- 
					    Gilles.

Re: [Xenomai-help] xenomai, skins, design and a practical approach

[Vera Snowball]

We do use native skin.
The reason I'm trying to compile xenosim simulator is because I found that this is the only way to test xenomai app with valgrind. Although I'm having an issue with the compilation during 'make install' (I posted this question as well):

make[1]: Leaving directory `/usr/src/xenomai-2.5.1/xenosim-2.4.7/Build_/vm'
Making install in adapter
make[1]: Entering directory `/usr/src/xenomai-2.5.1/xenosim-2.4.7/Build_/adapter'
g++ -DHAVE_CONFIG_H -I. -I/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter -I../include -D__XENO_SIM__ -fno-exceptions -I/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/.. -I/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include    -O2 -MT adapter.o -MD -MP -MF .deps/adapter.Tpo -c -o adapter.o /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc
In file included from /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/sched.h:31,
                 from /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/pod.h:34,
                 from /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:23:
/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/thread.h: In function âxnthread* xnthread_lookup(xnhandle_t)â:
/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/thread.h:431: error: invalid conversion from âvoid*â to âxnthread*â
In file included from /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../vm/manager.h:38,
                 from /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:25:
/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../vm/thread.h: At global scope:
/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../vm/thread.h:52: warning: âtypedefâ was ignored in this declaration
/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc: In function âconst char* mvm_get_thread_mode(void*)â:
/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:65: error: too few arguments to function
/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:67: error: too few arguments to function
make[1]: *** [adapter.o] Error 1
make[1]: Leaving directory `/usr/src/xenomai-2.5.1/xenosim-2.4.7/Build_/adapter'
make: *** [install-recursive] Error 1

If you have any suggestion on how to run the xenomai app with valgrind, it would be great to know it. I got syscall 555 error by trying to run our app with valgrind in a usual way (w/o xenosim).

Any help is much appreciated.


Best Regards,
Vera


-----Original Message-----
From: Gilles Chanteperdrix [mailto:gilles.chanteperdrix@xenomai.org
Sent: Thursday, May 20, 2010 4:16 AM
To: Vera Snowball
Cc: haknick@domain.hid; xenomai@xenomai.org
Subject: Re: [Xenomai-help] xenomai, skins, design and a practical approach

Vera Snowball wrote:
> Sounds good to me. Does it include by any chance a chapter on how to
> work with Xenosim simulator? Looks like it is the only simulator which
> can be used for debugging with valgrind. If you made it work, it would
> be great to know how.

Xenosim requires an old 32 bits installation to be compiled, so, it may
not be straightforward to use it.

If what you want to debug with valgrind is your application and not
Xenomai, you can arrange to compile your application for Linux pthreads,
and you will be able to debug it. If you are using the POSIX skin, it
should be easy. If you are using a legacy skin, such as vxworks, psos,
uitron, etc... we already have support for running them on plain linux
with the xenomai-solo package. Only if you are using the native skin it
will be a little harder.

-- 
					    Gilles.

Re: [Xenomai-help] xenomai, skins, design and a practical approach

[Gilles Chanteperdrix]

Vera Snowball wrote:
> We do use native skin. The reason I'm trying to compile xenosim
> simulator is because I found that this is the only way to test
> xenomai app with valgrind. Although I'm having an issue with the
> compilation during 'make install' (I posted this question as well):
> 
> make[1]: Leaving directory
> `/usr/src/xenomai-2.5.1/xenosim-2.4.7/Build_/vm' Making install in
> adapter make[1]: Entering directory
> `/usr/src/xenomai-2.5.1/xenosim-2.4.7/Build_/adapter' g++
> -DHAVE_CONFIG_H -I. -I/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter
> -I../include -D__XENO_SIM__ -fno-exceptions
> -I/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/..
> -I/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include    -O2
> -MT adapter.o -MD -MP -MF .deps/adapter.Tpo -c -o adapter.o
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc In file
> included from
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/sched.h:31,
>  from
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/pod.h:34,
>  from /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:23: 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/thread.h:
> In function âxnthread* xnthread_lookup(xnhandle_t)â: 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/thread.h:431:
> error: invalid conversion from âvoid*â to âxnthread*â In file
> included from
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../vm/manager.h:38, from
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:25: 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../vm/thread.h: At
> global scope: 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../vm/thread.h:52:
> warning: âtypedefâ was ignored in this declaration 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc: In function
> âconst char* mvm_get_thread_mode(void*)â: 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:65: error:
> too few arguments to function 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:67: error:
> too few arguments to function make[1]: *** [adapter.o] Error 1 
> make[1]: Leaving directory
> `/usr/src/xenomai-2.5.1/xenosim-2.4.7/Build_/adapter' make: ***
> [install-recursive] Error 1

You are probably using a too recent version of gcc.

> 
> If you have any suggestion on how to run the xenomai app with
> valgrind, it would be great to know it. I got syscall 555 error by
> trying to run our app with valgrind in a usual way (w/o xenosim).

As I told you, the only practical way is to have a way to compile your
application for using plain Linux services. If you are using the posix
skin, it is easy, if you are using the native skin, it is a bit harder,
but not impossible.

-- 
					    Gilles.

Re: [Xenomai-help] xenomai, skins, design and a practical approach

[Vera Snowball]

OK, finally got a change to come back to this.
I do use the proper version of gcc source code:

[root@domain.hid]# gcc --version
gcc (GCC) 4.3.0 20080428 (Red Hat 4.3.0-8)
Copyright (C) 2008 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[root@domain.hid]# ll ../gcc-src-4.3.0/
total 57996
-rwx------ 1 root root 59321957 2010-05-17 15:31 gcc-4.3.0.tar.bz2

Is anything else I can do/check/install to make xenosim to compile?


Thanks a lot in advance,
Vera



-----Original Message-----
From: Gilles Chanteperdrix [mailto:gilles.chanteperdrix@xenomai.org
Sent: Thursday, May 20, 2010 10:34 AM
To: Vera Snowball
Cc: haknick@domain.hid; xenomai@xenomai.org
Subject: Re: [Xenomai-help] xenomai, skins, design and a practical approach

Vera Snowball wrote:
> We do use native skin. The reason I'm trying to compile xenosim
> simulator is because I found that this is the only way to test
> xenomai app with valgrind. Although I'm having an issue with the
> compilation during 'make install' (I posted this question as well):
> 
> make[1]: Leaving directory
> `/usr/src/xenomai-2.5.1/xenosim-2.4.7/Build_/vm' Making install in
> adapter make[1]: Entering directory
> `/usr/src/xenomai-2.5.1/xenosim-2.4.7/Build_/adapter' g++
> -DHAVE_CONFIG_H -I. -I/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter
> -I../include -D__XENO_SIM__ -fno-exceptions
> -I/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/..
> -I/usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include    -O2
> -MT adapter.o -MD -MP -MF .deps/adapter.Tpo -c -o adapter.o
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc In file
> included from
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/sched.h:31,
>  from
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/pod.h:34,
>  from /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:23: 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/thread.h:
> In function âxnthread* xnthread_lookup(xnhandle_t)â: 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../../include/nucleus/thread.h:431:
> error: invalid conversion from âvoid*â to âxnthread*â In file
> included from
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../vm/manager.h:38, from
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:25: 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../vm/thread.h: At
> global scope: 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/../vm/thread.h:52:
> warning: âtypedefâ was ignored in this declaration 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc: In function
> âconst char* mvm_get_thread_mode(void*)â: 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:65: error:
> too few arguments to function 
> /usr/src/xenomai-2.5.1/xenosim-2.4.7/adapter/adapter.cc:67: error:
> too few arguments to function make[1]: *** [adapter.o] Error 1 
> make[1]: Leaving directory
> `/usr/src/xenomai-2.5.1/xenosim-2.4.7/Build_/adapter' make: ***
> [install-recursive] Error 1

You are probably using a too recent version of gcc.

> 
> If you have any suggestion on how to run the xenomai app with
> valgrind, it would be great to know it. I got syscall 555 error by
> trying to run our app with valgrind in a usual way (w/o xenosim).

As I told you, the only practical way is to have a way to compile your
application for using plain Linux services. If you are using the posix
skin, it is easy, if you are using the native skin, it is a bit harder,
but not impossible.

-- 
					    Gilles.