Dear all:
I've been using RTLinux for a while and it's really cool. I just moved to
RTL2.0 and got some problems with it. Seems to me, the parameter "period"
in pthread_make_periodic_np() or rt_task_make_periodic() can be calculated
like this: 1193180/frequency. Say, if I want to run a task at 1KHz, I
should set "period" to 1193. This works fine in RTL1.x. I changed the
hello.c(See below) a little bit to have it run for 10 seconds. But it only
runs for about 8 seconds (from the time when I type "insmod hello.o" and
hit ENTER to the time I saw "stops!" in the console).
Any ideas?
Best Regards
Daniel
#include <rtl.h>
#include <time.h>
#include <pthread.h>
pthread_t thread;
void * start_routine(void *arg)
{
struct sched_param p;
int counter=10000;
p . sched_priority = 1;
pthread_setschedparam (pthread_self(), SCHED_FIFO, &p);
pthread_make_periodic_np (pthread_self(), gethrtime(), 1193);
while (counter) {
counter--;
pthread_wait_np ();
}
printk("stops!\n");
return 0;
}
int init_module(void) {
return pthread_create (&thread, NULL, start_routine, 0);
}
void cleanup_module(void) {
pthread_delete_np (thread);
}
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