[Xorp-hackers] XrlAtomNotFound exception

[Ben Greear]

On 12/09/2011 06:35 AM, Maarten wrote:
> Hi all,
>
> I've been fuzzing around with the xorp source code for the last two weeks to get an idea how it works. Some of you might remember I am currently developing a
> new routing protocol. Or trying to. Whatever. I think I have the IPC / finder stuff working now as the common interface gets called and the eventloop runs.
>
> But after a couple of loops, typically 7 or so, I get a XrlArgs::XrlAtomNotFound exception. What on earth is that?

I hate the exception handling in xorp.  My suggestion is to find the code that throws
that exception, and turn it into an assert instead.  That way, you get a core file and
a backtrace from gdb so you can see where the bug is triggered.

A patch that added proper error handling and removed the exception
entirely would be welcome!

Thanks,
Ben

>
> In the logfile it looks like this:
>
> Terminate called after throwing an instance of 'XrlArgs::XrlAtomNotFound'
> [ 2011/12/09 14:44:15.140028  ERROR xorp_rtrmgr:3850 RTRMGR rtrmgr/task.cc:1414 execute_done ] 210 Transport failed
> [ 2011/12/09 14:44:15.140073  ERROR xorp_rtrmgr:3850 RTRMGR rtrmgr/task.cc:2012 task_fail ] Shutting down fatally wounded process (rants)
> [ 2011/12/09 14:44:15.140095  INFO xorp_rtrmgr:3850 RTRMGR rtrmgr/module_manager.cc:180 terminate ] Terminating module: rants
> [ 2011/12/09 14:44:15.140114  INFO xorp_rtrmgr:3850 RTRMGR rtrmgr/module_manager.cc:203 terminate ] Killing module: rants
> [ 2011/12/09 14:44:15.140148  ERROR xorp_rtrmgr:3850 RTRMGR rtrmgr/master_conf_tree.cc:700 commit_pass2_done ] Commit failed: 210 Transport failed
> [ 2011/12/09 14:44:15.140164  ERROR xorp_rtrmgr:3850 RTRMGR rtrmgr/master_conf_tree.cc:269 config_done ] Configuration failed: 210 Transport failed
>
> (rants is the name of my new soon to be routing protocol)
>
> What am I doing wrong?
> (I am currently not yet cycling my node status (you know, from status_codes.h). Might that have anything to do with it?)
>
>
> grtz & tnx for help in advance!
>
> Maarten
>
>
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-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com