Re: rt_task_self() return value

[Mauro Salvini via Xenomai]

On Tue, 2019-11-19 at 16:41 +0100, Jan Kiszka wrote:
> On 19.11.19 16:29, Mauro Salvini via Xenomai wrote:
> > Hi all,
> > 
> > I'm using Xenomai 3.0.9 in cobalt mode and I'm facing an issue on
> > rt_task_self() returned value.
> > 
> > Please see this simple code:
> > 
> > #include <stdio.h>
> > #include <stdlib.h>
> > #include <unistd.h>
> > #include <alchemy/task.h>
> > 
> > RT_TASK gNewTask;
> > 
> > static void Task(void *lpArgument)
> > {
> >     rt_printf("Task created.\n");
> >     gNewTask = *(rt_task_self());
> 
> This fills the internal data structure RT_TASK with the content of 
> another one. Rather than "cloning", did you try using a reference as
> the 
> API suggests? If that worked in Xenomai 2, it was luck.
> 

Hi Jan,

thanks for your answer.
Yes, I tried it and even does not work. Changing code in this way:

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <alchemy/task.h>

RT_TASK* gNewTask;

static void Task(void *lpArgument)
{
        rt_printf("Task created.\n");
        gNewTask = rt_task_self();
}

int main()
{
        RT_TASK tNewTask;
        int err = rt_task_create(&tNewTask, "TEST", 16384, 10,
T_JOINABLE);
        rt_printf(" task create: %d\n", err);
        err = rt_task_start(&tNewTask, Task, NULL);
        rt_printf(" task start: %d\n", err);
        
        rt_task_sleep(2000000000);

        //err = rt_task_join(&tNewTask);
        err = rt_task_join(gNewTask);
        rt_printf(" task join : %d\n", err);

        return 0;
}

returns:

./test
 task create: 0
Task created.
 task start: 0
 task join : -3


Thanks, regards

-- Mauro