* [Xenomai] a question about rt_mutex_acquire()
@ 2014-03-10 15:01 ali hagigat
2014-03-10 15:17 ` Gilles Chanteperdrix
0 siblings, 1 reply; 5+ messages in thread
From: ali hagigat @ 2014-03-10 15:01 UTC (permalink / raw)
To: xenomai
rt_mutex_acquire() creates a segmentation fault, why?
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./examp1
inside task2
Segmentation fault (core dumped)
dmesg -c
xtask2[12314]: segfault at 0 ip b7703b38 sp b76ea2a0 error 4 in libnative.so.3.0.0[b7700000+6000]
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Xenomai] a question about rt_mutex_acquire()
2014-03-10 15:01 [Xenomai] a question about rt_mutex_acquire() ali hagigat
@ 2014-03-10 15:17 ` Gilles Chanteperdrix
2014-03-11 12:23 ` ali hagigat
0 siblings, 1 reply; 5+ messages in thread
From: Gilles Chanteperdrix @ 2014-03-10 15:17 UTC (permalink / raw)
To: ali hagigat; +Cc: xenomai
On 03/10/2014 04:01 PM, ali hagigat wrote:
> rt_mutex_acquire() creates a segmentation fault, why?
Because rt_mutex_create failed? Otherwise we would see the message
"success"?
Is this a game? Or are you using Xenomai for a real project?
--
Gilles.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Xenomai] a question about rt_mutex_acquire()
2014-03-10 15:17 ` Gilles Chanteperdrix
@ 2014-03-11 12:23 ` ali hagigat
2014-03-18 15:42 ` ali hagigat
0 siblings, 1 reply; 5+ messages in thread
From: ali hagigat @ 2014-03-11 12:23 UTC (permalink / raw)
To: Gilles Chanteperdrix; +Cc: xenomai
On 3/10/14, Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org> wrote:
> On 03/10/2014 04:01 PM, ali hagigat wrote:
>> rt_mutex_acquire() creates a segmentation fault, why?
>
> Because rt_mutex_create failed? Otherwise we would see the message
> "success"?
>
> Is this a game? Or are you using Xenomai for a real project?
>
>
> --
> Gilles.
>
I am just testing Xenomai. If i comment rt_mutex_acquire() I see the
message, "success", and a real time mutex is created correctly. by
uncommenting "rt_mutex_acquire()" there is a segmentation fault.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Xenomai] a question about rt_mutex_acquire()
2014-03-11 12:23 ` ali hagigat
@ 2014-03-18 15:42 ` ali hagigat
2014-03-18 15:47 ` Philippe Gerum
0 siblings, 1 reply; 5+ messages in thread
From: ali hagigat @ 2014-03-18 15:42 UTC (permalink / raw)
To: Gilles Chanteperdrix; +Cc: xenomai
On 3/11/14, ali hagigat <hagigatali@gmail.com> wrote:
> On 3/10/14, Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org> wrote:
>> On 03/10/2014 04:01 PM, ali hagigat wrote:
>>> rt_mutex_acquire() creates a segmentation fault, why?
>>
>> Because rt_mutex_create failed? Otherwise we would see the message
>> "success"?
>>
>> Is this a game? Or are you using Xenomai for a real project?
>>
>>
>> --
>> Gilles.
>>
>
> I am just testing Xenomai. If i comment rt_mutex_acquire() I see the
> message, "success", and a real time mutex is created correctly. by
> uncommenting "rt_mutex_acquire()" there is a segmentation fault.
>
Why there is a segmentation fault?
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Xenomai] a question about rt_mutex_acquire()
2014-03-18 15:42 ` ali hagigat
@ 2014-03-18 15:47 ` Philippe Gerum
0 siblings, 0 replies; 5+ messages in thread
From: Philippe Gerum @ 2014-03-18 15:47 UTC (permalink / raw)
To: ali hagigat, Gilles Chanteperdrix; +Cc: xenomai
On 03/18/2014 04:42 PM, ali hagigat wrote:
> On 3/11/14, ali hagigat <hagigatali@gmail.com> wrote:
>> On 3/10/14, Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org> wrote:
>>> On 03/10/2014 04:01 PM, ali hagigat wrote:
>>>> rt_mutex_acquire() creates a segmentation fault, why?
>>>
>>> Because rt_mutex_create failed? Otherwise we would see the message
>>> "success"?
>>>
>>> Is this a game? Or are you using Xenomai for a real project?
>>>
>>>
>>> --
>>> Gilles.
>>>
>>
>> I am just testing Xenomai. If i comment rt_mutex_acquire() I see the
>> message, "success", and a real time mutex is created correctly. by
>> uncommenting "rt_mutex_acquire()" there is a segmentation fault.
>>
>
> Why there is a segmentation fault?
>
Because rt_mutex_acquire() runs before rt_mutex_create(). Check your
code to find out why.
--
Philippe.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2014-03-18 15:47 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2014-03-10 15:01 [Xenomai] a question about rt_mutex_acquire() ali hagigat
2014-03-10 15:17 ` Gilles Chanteperdrix
2014-03-11 12:23 ` ali hagigat
2014-03-18 15:42 ` ali hagigat
2014-03-18 15:47 ` Philippe Gerum
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