void insert_dh(u_short seq)
{
struct delay_node *p, *node;
p = DELAY_HEAD;
while (p->next != NULL) {
p = p->next;
}
node = (struct delay_node *)malloc(sizeof(struct delay_node));
node->seq = seq;
gettimeofday(&node->tv, NULL);
struct timeval delay_tv;
delay_tv.tv_usec = delay_t;
delay_tv.tv_sec = 0;
while (delay_tv.tv_usec >= 1000000) {
delay_tv.tv_usec -= 1000000;
delay_tv.tv_sec ++;
}
timersum(node->tv, node->tv, delay_tv);
node->next = NULL;
p->next = node;
/*
printf("delay array:\n");
for (p=DELAY_HEAD->next; p!=NULL; p=p->next) {
printf("seq: %u time: %ld\n",p->seq,p->tv);
}
*/
}
struct itimerspec * rtime(struct itimerspec * t)
{
double tim = (((double)random() * timer_range) /RAND_MAX) + min_timer;
t->it_value.tv_sec =tim;
t->it_value.tv_nsec = ((tim - t->it_value.tv_sec) * NSEC_PER_SEC);
if( absf ) timersum(&t->it_value,&t->it_value,&tb);
return t;
}
int main(void)
{
struct timespec pre_time, post_time;
struct timespec req, res;
double diff;
int k,i;
static int bla=0;
ioperm(0x378,3,1);
req.tv_sec = 0;
req.tv_nsec = 10;
Try(clock_getres(CLOCK, &res));
printf("Clock resolution %12.3f usec\n",
(double)res.tv_nsec/NSEC_PER_USEC);
printf("Requested time difference(usec)\n");
for (i=0; i<30; i++){
req.tv_nsec *= 10;
if (req.tv_nsec >= NSEC_PER_SEC) {
req.tv_nsec = 100;
req.tv_sec++;
}
// req.tv_sec = 0;
// req.tv_nsec = 500 * 1000;
// for (k = 0; k < 20; k++) {
Try(clock_gettime(CLOCK, &pre_time));
Try0(clock_nanosleep(CLOCK, 0, &req, NULL));
Try(clock_gettime(CLOCK, &post_time));
timersum(&post_time, &post_time, &req);
if(bla) {
outb(0x1,0x378);
bla = 0;
} else {
outb(0x0,0x378);
bla = 1;
}
diff = better_timerdiff(&post_time, &pre_time)/NSEC_PER_USEC;
////diff = timerdiff(&post_time, &pre_time);
printf("%12.9f\t %12.9f\n", (double)req.tv_sec + ((double)req.tv_nsec/NSEC_PER_SEC), diff);
// }
}
return 0;
}
