Hi Eric,
FYI Jack wasn't the reporter.
Your fixed version works fine for me. I'm adding some code to print warnings
about continuous overruns (at increasing periods, up to hourly) before I
commit it.
I'm also inclined to keep the original delay = 0.1 penalty for an over-run
instead of dropping it to 0.02 seconds, but I will consider arguments against
that if there are objections.
- Andrew
On 2013-01-09 Eric Norum wrote:
> Sorry.
> Previous message had wrong periodicTask code. Here's what I meant to send.
>
> Jack, can you try this and see if it fixes the problem that you were
> seeing/
>
>
> static void periodicTask(void *arg)
> {
> periodic_scan_list *ppsl = (periodic_scan_list *)arg;
>
> epicsTimeStamp nextScan, now;
> double delay;
>
> taskwdInsert(0, NULL, NULL);
> epicsEventSignal(startStopEvent);
>
> epicsTimeGetCurrent(&nextScan);
> while (ppsl->scanCtl != ctlExit) {
> if (ppsl->scanCtl == ctlRun) scanList(&ppsl->scan_list);
> epicsTimeAddSeconds(&nextScan, ppsl->period);
> epicsTimeGetCurrent(&now);
> delay = epicsTimeDiffInSeconds(&nextScan, &now);
> if (delay <= 0.0) {
> ppsl->overrunCount++;
> delay = 0.02;
> epicsTimeGetCurrent(&nextScan);
> }
> epicsEventWaitWithTimeout(ppsl->loopEvent, delay);
> }
>
> taskwdRemove(0);
> epicsEventSignal(startStopEvent);
> }
--
There is no such thing as a free lunch. When invited for lunch,
it is best to check if you are there to eat, or to be eaten.
-- Clive Robinson
- Replies:
- RE: time drift in camonitor timestamps tom.cobb
- References:
- time drift in camonitor timestamps ibadillo
- Re: time drift in camonitor timestamps Jack Smith
- Re: time drift in camonitor timestamps Eric Norum
- Navigate by Date:
- Prev:
Re: What's calling get_array_info? Michael Davidsaver
- Next:
medm build D Peter Siddons
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
<2013>
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
- Navigate by Thread:
- Prev:
Re: time drift in camonitor timestamps Eric Norum
- Next:
RE: time drift in camonitor timestamps tom.cobb
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
<2013>
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
|