Hello,
I am facing a problem while creating more than one rt-threads in my program.
On some machines it is consistantly giving kernel panic result. Some other
machines it does not give any problem and my program works fine.
I would like to know whethere there is any limitation in creating more than
one RT-Threads in a single process. If anyone out there has any idea, can
you please let me know where I am doing wrong?
Both the machines have rtl-3.1 and kernel version 2.4.4.
Here I am attaching the small sample program I have written. I have modified
the same hello.c in the examples that come along with the rt-linux
installation and am using the same Makefile for creating the module and
inserting it.
Thanks much in advance for your help.
Regards,
Ravi
/* ===
hello.c
====*/
#include <rtl.h>
#include <time.h>
#include <pthread.h>
#include <linux/malloc.h>
pthread_t thread;
pthread_t thread1;
pthread_attr_t attr;
struct sched_param schedParam;
char *name = NULL;
void * start_routine(void *arg)
{
int cnt = 0;
pthread_make_periodic_np (pthread_self(), gethrtime(), 500000000);
while (1) {
pthread_wait_np ();
if(cnt %10 == 0)
{
cnt = 0;
rtl_printf("I'm here; my arg is %x\n", (unsigned)
arg);
}
cnt++;
}
return 0;
}
void * start_routine1(void *arg)
{
int cnt = 0;
char *name = "Test program";
pthread_make_periodic_np (pthread_self(), gethrtime(), 500000000);
while (1) {
pthread_wait_np ();
if(cnt % 20 == 0)
{
rtl_printf("in thread 2 \n");
rtl_printf("my arg is %x\n", (unsigned) arg);
if(name != NULL)
rtl_printf(" Name = %s \n", name);
cnt = 0;
}
cnt++;
}
return 0;
}
int init_module(void) {
int ret = 0;
pthread_attr_init(&attr);
schedParam.sched_priority = 2;
pthread_attr_setschedparam(&attr, &schedParam);
ret = pthread_create (&thread, &attr, start_routine, 0);
pthread_attr_init(&attr);
schedParam.sched_priority = 1;
pthread_attr_setschedparam(&attr, &schedParam);
ret = pthread_create (&thread1, &attr, start_routine1, 0);
return ret;
}
void cleanup_module(void) {
pthread_delete_np (thread);
pthread_delete_np (thread1);
}
/* ================
end of the hello.c program
================== */
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