[Xenomai] Using xenomai posix routines instead of Linux POSIX routines

[Xenomai] Using xenomai posix routines instead of Linux POSIX routines

[Sagi Maimon]

Hi,

Until now I have created RT xenomai threads, by using the skin native API:
kernel/xenomai/skins/native/task.c  (rt_task_create routine)

and for creating Linux threads, I have used the "pthread_create" routine (.../powerpc-e300c3-linux-gnu/usr/lib/libpthread.so)

xenomai also implements POSIX API:
kernel/xenomai/skins/posix/thread.c
And by looking at the code (and according to documentation), by calling "pthread_create" routine , xenomai creates RT threads.


My question:
I want to use the xenomai POSIX API, so How can I use the xenomai  "pthread_create" routine, instead of the one from (.../powerpc-e300c3-linux-gnu/usr/lib/libpthread.so)?
should I add something to my Makefile?
Should I remove "-lpthread" parameter from my application Makefile?

Thanks,

Sagi

Re: [Xenomai] Using xenomai posix routines instead of Linux POSIX routines

[Philippe Gerum]

On 03/30/2015 03:40 PM, Sagi Maimon wrote:
> Hi,
> 
> Until now I have created RT xenomai threads, by using the skin native API:
> kernel/xenomai/skins/native/task.c  (rt_task_create routine)
> 
> and for creating Linux threads, I have used the "pthread_create" routine (.../powerpc-e300c3-linux-gnu/usr/lib/libpthread.so)
> 
> xenomai also implements POSIX API:
> kernel/xenomai/skins/posix/thread.c
> And by looking at the code (and according to documentation), by calling "pthread_create" routine , xenomai creates RT threads.
> 
> 
> My question:
> I want to use the xenomai POSIX API, so How can I use the xenomai  "pthread_create" routine, instead of the one from (.../powerpc-e300c3-linux-gnu/usr/lib/libpthread.so)?
> should I add something to my Makefile?
> Should I remove "-lpthread" parameter from my application Makefile?
> 

This document explains how to create real-time POSIX applications with
Xenomai:

http://xenomai.org/2014/08/porting-a-linux-application-to-xenomai-dual-kernel/#Compilation_for_the_Xenomai_POSIX_skin

-- 
Philippe.

Re: [Xenomai] Using xenomai posix routines instead of Linux POSIX routines

[Sagi Maimon]

Hi, 
thanks for the help.
I have read the document, and the use of wrapper makes good sense. 
According to the document, when calling "pthread_create" (by using the XENO_POSIX_LIBS flags),  it will call  "__wrap_pthread_create" routine.
But I am using Xenomai 2.6.4 , and there is no implementation of "__wrap_pthread_create" routine, 
instead there is implementation of "pthread_create" under  kernel/xenomai/skins/posix/thread.c

Can you please explain it?

Thanks,

Sagi

-----Original Message-----
From: Philippe Gerum [mailto:rpm@xenomai.org] 
Sent: Monday, March 30, 2015 16:50
To: Sagi Maimon; xenomai@xenomai.org
Subject: Re: [Xenomai] Using xenomai posix routines instead of Linux POSIX routines

On 03/30/2015 03:40 PM, Sagi Maimon wrote:
> Hi,
> 
> Until now I have created RT xenomai threads, by using the skin native API:
> kernel/xenomai/skins/native/task.c  (rt_task_create routine)
> 
> and for creating Linux threads, I have used the "pthread_create" routine (.../powerpc-e300c3-linux-gnu/usr/lib/libpthread.so)
> 
> xenomai also implements POSIX API:
> kernel/xenomai/skins/posix/thread.c
> And by looking at the code (and according to documentation), by calling "pthread_create" routine , xenomai creates RT threads.
> 
> 
> My question:
> I want to use the xenomai POSIX API, so How can I use the xenomai  "pthread_create" routine, instead of the one from (.../powerpc-e300c3-linux-gnu/usr/lib/libpthread.so)?
> should I add something to my Makefile?
> Should I remove "-lpthread" parameter from my application Makefile?
> 

This document explains how to create real-time POSIX applications with
Xenomai:

http://xenomai.org/2014/08/porting-a-linux-application-to-xenomai-dual-kernel/#Compilation_for_the_Xenomai_POSIX_skin

-- 
Philippe.

Re: [Xenomai] Using xenomai posix routines instead of Linux POSIX routines

[Philippe Gerum]

On 03/31/2015 08:23 AM, Sagi Maimon wrote:
> Hi, 
> thanks for the help.
> I have read the document, and the use of wrapper makes good sense. 
> According to the document, when calling "pthread_create" (by using the XENO_POSIX_LIBS flags),  it will call  "__wrap_pthread_create" routine.
> But I am using Xenomai 2.6.4 , and there is no implementation of "__wrap_pthread_create" routine, 
> instead there is implementation of "pthread_create" under  kernel/xenomai/skins/posix/thread.c
> 
> Can you please explain it?

Wrappers are implemented in user-space (see src/skins/posix).

-- 
Philippe.

Re: [Xenomai] Using xenomai posix routines instead of Linux POSIX routines

[Sagi Maimon]

Thanks again.

-----Original Message-----
From: Philippe Gerum [mailto:rpm@xenomai.org] 
Sent: Tuesday, March 31, 2015 10:05
To: Sagi Maimon; xenomai@xenomai.org
Subject: Re: [Xenomai] Using xenomai posix routines instead of Linux POSIX routines

On 03/31/2015 08:23 AM, Sagi Maimon wrote:
> Hi,
> thanks for the help.
> I have read the document, and the use of wrapper makes good sense. 
> According to the document, when calling "pthread_create" (by using the XENO_POSIX_LIBS flags),  it will call  "__wrap_pthread_create" routine.
> But I am using Xenomai 2.6.4 , and there is no implementation of 
> "__wrap_pthread_create" routine, instead there is implementation of 
> "pthread_create" under  kernel/xenomai/skins/posix/thread.c
> 
> Can you please explain it?

Wrappers are implemented in user-space (see src/skins/posix).

--
Philippe.