[omniORB] Assertion Failed

[Sai-Lai Lo]

Jon,

As far as I know, the bug reported by Helmut was fixed. 

A rare race condition was discovered at around Nov 2000. The bug is
triggered when there is a lot of concurrency in create, use, and delete a
CORBA object. It isn't related directly to the assertion failure you are
seeing but it is worth getting the fix for the race anyway.

The 2.8 snapshot that contain the fix is in:

ftp://ftp.uk.research.att.com/pub/omniORB/omniORB_28_snapshots/omniORB-latest.tar.gz 


Sai-Lai

>>>>> jon kristensen writes:

> Hi,

> We have an embedded system with two or three computers, where there are multiple
> clients and servers on all.
> We are running the Pharlap ETS RTOS (now aquired by VenturCom), which is based
> on the Win32 API and uses a Winsock compatible socket library. The compiler is
> Visual Studio 6.0, sp3.

> We use omniORB 2.8.0, snapshot dated January 7th, 2000.

> Recently, we have experienced a crash in the omniORB code. As our
> embedded system is for subsea use and the crash so far only have occured
> while submerged, it is quite difficult to debug, but we are trying to
> reproduce the fault in our lab.

> The crash occurs in Strand::Sync::RdUnlock() (strand.cc, line 330), where
> the assert statement fails.

> Helmut Swaczinna initiated a thread in the mailing list on July 26th,
> 1999 where he describes the same problem (
> http://www.uk.research.att.com/omniORB/archives/1999-07/0229.html). The
> thread proposes several fixes, but it stops without resolving the
> problem.

> Was this issue resolved conclusively?

> As my process is both a server and a client, it is difficult to pinpoint
> which operations that causes this. However, it has happened repeatedly at
> about the same point in the operation of our system. As soon as we are
> able to reproduce it in the lab, we will run with full omniORB tracing,
> and post anything of interest.

> In the mean time, any input is appreciated.

> Best regards
> Jon

> --------------
> Jon Kristensen
> Principal Engineer, SW Embedded Systems
> Kongsberg Simrad AS, Horten, Norway
> phone:    +47 33 02 39 34
> fax: +47 33 04 76 19
> email:    jon.kristensen@kongsberg-simrad.com






-- 
Sai-Lai Lo                                   S.Lo@uk.research.att.com
AT&T Laboratories Cambridge           WWW:   http://www.uk.research.att.com 
24a Trumpington Street                Tel:   +44 1223 343000
Cambridge CB2 1QA                     Fax:   +44 1223 313542
ENGLAND