RE: [rtl] putting threads to sleep

["karl rentsch" <krentsch@btr-auto.aust.com>]

Thanks everyone, but I've got it sorted out now.  I upgraded from the
development RT-Linux (3.0 pre ?) to the latest 3.0 kernal and it seems
to have solved the problem of the one-shot pthread_make_periodic
function not resetting (I can't remeber changing anything else).  Here's
the code for interest:

void *can_update(void *pparams)
{
	volatile sched_can_msg_t *msg;
	can_output_t can_output_data;
	hrtime_t time, sched_time;
	int i = 0;

	while(1) {
		msg = can_objects->can_messages;
		time = gethrtime();
		sched_time = time + 10000000LL;
		
		for(i = 0; i < can_objects->no_entries; i++) {
			if(msg->id >= 0) {
				if(time > (msg->last_sent +
msg->period)) {
			     	can_output_data.msg.port = msg->channel;
			     	can_output_data.msg.id = msg->id;
     				can_output_data.msg.datalen =
msg->datalen;
	
memcpy(&can_output_data.msg.data, &msg->data,
sizeof(can_output_data.msg.data));
					rtf_put(CAN_DRV_TX_FIFO,
&can_output_data, sizeof(can_output_t));
					msg->last_sent = gethrtime();

				}
				if(sched_time > (msg->last_sent +
msg->period)) {
					sched_time = msg->last_sent +
msg->period;
				}
			}
			msg++;
		}
		pthread_make_periodic_np(pthread_self(), sched_time, 0);
		pthread_wait_np();
	}
	return 0;
}

Regards

Karl Rentsch


> karl rentsch wrote:
> 
> Hi all,
>
> I've got a problem I hope someone can help me with.  I'm trying to put
a
> thread to sleep but I don't want to tie up the system using usleep()
or
> nanosleep().  I've tried using pthread_make_periodic_np configured as
a
> one shot timer (ie. it needs to repeat several times but for different
> time intervals) but it doesn't seem to work
> Any help would be much appreciated
> Thanks
> Karl Rentsch