[Xenomai-help] another question

[Xenomai-help] another question

[marcellin]

Sorry, but with this tiny program i have the same error : Operation not 
permitted. What is wrong ?

#include <sys/mman.h>
#include <sys/time.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <getopt.h>
#include <time.h>
#include <native/task.h>
#include <native/mutex.h>
#include <native/timer.h>
#include <native/sem.h>
#include <native/intr.h>
#include <native/cond.h>
#include <rtdm/rtbenchmark.h>
#include <linux/rtc.h>
#include <sys/ioctl.h>
//#include <sys/time.h>
//#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>


RT_TASK task;


RT_INTR intr_desc;

RT_COND cond;

RT_MUTEX mutextest;

int err;

void mytask(void * cookie)
{
  sleep(1);
  err = rt_cond_signal(&cond);
  if(err != 0){
    printf("\nrt_cond_signal : %s",strerror(-err));
  }
         

}

int main (int argc, char **argv)
{

  mlockall(MCL_CURRENT | MCL_FUTURE);
   
  rt_timer_set_mode(TM_ONESHOT);

  err = rt_cond_create(&cond,"condition");
  if(err != 0){
    printf("\nrt_cond_create : %s",strerror(-err));
  }
  err = rt_mutex_create(&mutextest,"mut");
  if(err != 0){
    printf("\nrt_mutex_create : %s",strerror(-err));
  }
 
  err = rt_task_create(&task,"SecondTask",0,99,0);
  if(err != 0){
    printf("\nrt_task_create : %s",strerror(-err));
  }
  err = rt_task_start(&task,&mytask,NULL);
  if(err != 0){
    printf("\nrt_task_start : %s",strerror(-err));
  }
 
 
  err = rt_cond_wait(&cond,&mutextest,TM_INFINITE);
  if(err != 0){
    printf("\nrt_cond_wait : %s",strerror(-err));
  }
  printf("\nend \n");
 
  retrurn(0);

}

regards

Marcell1

Re: [Xenomai-help] another question

[Jan Kiszka]

[-- Attachment #1: Type: text/plain, Size: 1169 bytes --]

marcellin wrote:
> Sorry, but with this tiny program i have the same error : Operation not
> permitted. What is wrong ?
> 
> ...
> int main (int argc, char **argv)
> {
> 
>  mlockall(MCL_CURRENT | MCL_FUTURE);
>    rt_timer_set_mode(TM_ONESHOT);
> 
>  err = rt_cond_create(&cond,"condition");
>  if(err != 0){
>    printf("\nrt_cond_create : %s",strerror(-err));
>  }
>  err = rt_mutex_create(&mutextest,"mut");
>  if(err != 0){
>    printf("\nrt_mutex_create : %s",strerror(-err));
>  }
> 
>  err = rt_task_create(&task,"SecondTask",0,99,0);
>  if(err != 0){
>    printf("\nrt_task_create : %s",strerror(-err));
>  }
>  err = rt_task_start(&task,&mytask,NULL);
>  if(err != 0){
>    printf("\nrt_task_start : %s",strerror(-err));
>  }
> 
> 
>  err = rt_cond_wait(&cond,&mutextest,TM_INFINITE);

You have to map your main thread to a native thread before you can
invoke a blocking RT service. Check rt_task_shadow() (and don't forget
to clean it up on exit).

>  if(err != 0){
>    printf("\nrt_cond_wait : %s",strerror(-err));
>  }
>  printf("\nend \n");
> 
>  retrurn(0);
> 
> }
> 
> regards
> 
> Marcell1
> 

Jan


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