i have a problem with rtL pthread : the system freeze after n iterations
with n between 150 and 1200...
here is the offending code (it deal with the parallel port, used as a login input with
a IR Led sensor connected)
Cedric
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#include <rtl_fifo.h>
#include <rtl_core.h>
#include <rtl_time.h>
#include <rtl.h>
#include <pthread.h>
#include <asm/io.h>
#define LPT_PORT 0x378
#define LPT_CONTROL 0x37A
#define LPT_STATE 0x379
#define FIFO_BUF_LENGTH 4000
pthread_t look_ack;
long time_base=1000000000L;
int FIFO_NB=0;
void *watch_ack(void *param)
{
unsigned char loading_mesg,loading_mesg_old=0;
int time_length=0;
struct sched_param p;
p.sched_priority=1;
pthread_setschedparam(pthread_self(),SCHED_FIFO,&p);
pthread_make_periodic_np(pthread_self(),gethrtime(),10000L);
while(1)
{
loading_mesg=inb(LPT_STATE);
// rtl_printf("Valeur %#x depuis %d\n", loading_mesg, time_length);
loading_mesg&=0x40;
if(loading_mesg!=loading_mesg_old)
{
rtl_printf("Changement : %#x\n",loading_mesg);
rtf_put(FIFO_NB,&time_length,sizeof(time_length));
time_length=0;
loading_mesg_old=loading_mesg;
}
time_length++;
pthread_wait_np();
}
}
int init_module(void)
{
printk("Start executing....\n Please wait.... fifo %d taille %d periode %ld\n"
, FIFO_NB, FIFO_BUF_LENGTH, time_base);
rtf_create(FIFO_NB,FIFO_BUF_LENGTH);
pthread_create(&look_ack,NULL,watch_ack,NULL);
return 0;
}
void cleanup_module(void)
{
printk("Thanks for waiting\nBye.\n");
pthread_delete_np(look_ack);
rtf_destroy(FIFO_NB);
}
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