BOUNCE rtl@rtlinux.org: Approval required: Non-member submissionfrom ["karl rentsch" <krentsch@btr-auto.aust.com>] (fwd)

[Der Herr Hofrat <der.herr@hofr.at>]

>From owner-rtl Wed May  9 16:42:31 2001
Received: from mta03.mail.mel.aone.net.au (mta03.mail.au.uu.net [203.2.192.83])
	by hq.fsmlabs.com (8.11.2/8.11.2) with ESMTP id f49MgUJ26137
	for <rtl@fsmlabs.com>; Wed, 9 May 2001 16:42:30 -0600
Received: from BTR-COM1.btr-auto.aust.com ([203.108.33.26])
          by mta03.mail.mel.aone.net.au with SMTP
          id <20010509223822.DDYS328.mta03.mail.mel.aone.net.au@BTR-COM1.btr-auto.aust.com>
          for <rtl@fsmlabs.com>; Thu, 10 May 2001 08:38:22 +1000
content-class: urn:content-classes:message
MIME-Version: 1.0
Subject: RE: [rtl] putting threads to sleep
Content-Type: text/plain;
	charset="iso-8859-1"
X-MimeOLE: Produced By Microsoft Exchange V6.0.4417.0
Date: Thu, 10 May 2001 08:39:44 +1000
Message-ID: <A3A5582AC3AFD448A7C0BD2DB7EFDC5F1143B1@BTR-COM1.btr-auto.aust.com>
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
Thread-Topic: [rtl] putting threads to sleep
Thread-Index: AcDYhrEGo2tDMMr/R+ept6pydrmqhgAUOXNQ
From: "karl rentsch" <krentsch@btr-auto.aust.com>
To: <rtl@fsmlabs.com>
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by hq.fsmlabs.com id f49MgVJ26138


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