Experimental Physics and
Industrial Control System

"John A. Priller" <[email protected]> · Tue, 15 Aug 2000 11:32:55 -0400

Since upgrading to 3.13.2 I've been encountering the following error one or
more times per day on two IOCs I have running a Channel Access Server
application for our ethernet-based Modicon PLCs:

	0x1f011e8 (tModSrv): Task called pure virtual function for which there is
no definition

tt yields:

	178a98 vxTaskEntry    +60 : modSrvTask(void) ()
	1f25ed8 modSrvTask(void)+84 : process__9fdManagerRC7osiTime ()
	1e73c8c process__9fdManagerRC7osiTime+108: process__13osiTimerQueue ()
	1e731f4 process__13osiTimerQueue+130: __pure_virtual ()
	1798a4 __pure_virtual +10 : __pure_virtual_called ()
	179884 __pure_virtual_called+50 : taskSuspend ()

the source code fragment for the fdManager call is thus:

	// initialize delay object
	  fsec = ((double) SCAN_MSEC) / 1000.0;
	  dsec = (long) fsec;
	  dnsec = (long) ((fsec - dsec) * 1000000000L);
	  osiTime delay(dsec,dnsec);

        ...

	  do {
	    fileDescriptorManager.process(delay);
	    pCASrv->ProcessRoutine();   // let mod srv CAS object do any periodic
processing
	    UpdateTimePV(pvCurrTime);   // update time-of-day PV
	  } while (Loop);

Would anyone have a clue why this is now happening?  This app was fairly
stable under 3.13.1.

--
John A. Priller            | Phone : (517) 333-6375
MSU Cyclotron Laboratory   | Fax   : (517) 353-5967
South Shaw Lane            | Email : [email protected]
East Lansing, MI 48824     | Web   : http://prille.nscl.msu.edu/jp.html

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System