Re: [Xenomai-help] fata: removing non-linked element...

[Jan Kiszka <jan.kiszka@domain.hid>]

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Stephan Zimmermann wrote:
> ...
> P.S.: For running the attaced program, you need a
> magic-parallel-port-interrupt-loopback-device. (Connecting pins 9 and 10
> of the parallel port will do the trick.)

...

> ------------------------------------------------------------------------
> 
> #include <iostream>
> #include <sys/mman.h>
> #include <assert.h>
> #include "native/task.h"
> #include "native/timer.h"
> #include "native/queue.h"
> #include "native/intr.h"
> 
> #include <signal.h>
> #include <sys/io.h>
> 
> RT_TASK maintask;
> RT_TASK inttask;
> RT_TASK intcreatortask;
> RT_TASK queue_endtask;
> 
> RT_INTR lptint;
> 
> #define LPT_BASE		0x378
> #define LPT_INT			7
> 
> #define PERIOD_TIME 	10
> #define TIMEBASE 		10000

...

> 
> int main(void){
> 	std::cout << "xenomai interrupt test" << std::endl;
> 	mlockall(MCL_CURRENT | MCL_FUTURE);
> 	
> 	signal(SIGTERM,  catch_signal);
> 	signal(SIGKILL,  catch_signal);
> 	signal(SIGQUIT,  catch_signal);
> 	signal(SIGINT ,  catch_signal);	
> 	
> 	if (iopl(3)) {  
> 		printf("iopl err\n");
> 		exit(1);
> 	}
> 	
> 	int err;
> 
> 	err = rt_task_shadow (&maintask,"maintask",10,0);
> 	std::cout << "task shadow:" << err << std::endl;
> 	
> 	err = rt_timer_set_mode(TIMEBASE);

Do you know that you are requesting a timer tick rate of 100 kHz? I just
managed to lock up my poor 266 MHz board running your code. :)

Maybe we are seeing all this weird behaviour due to kernel stack
overruns. Try to switch on CONFIG_DEBUG_STACKOVERFLOW and
CONFIG_DEBUG_STACK_USAGE.

/me now watching what happens at 10 kHz...

Jan


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