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Is my code in an Infinite Loop?

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# 1  
Old 06-05-2009
Is my code in an Infinite Loop?
Production C code compiled without the dash-g option is running, and seems to be in an infinite loop. Is there a way to tell? Is there a diagnostic tool that will report what objects or what lines of code or even what functions are being executed?

Or is my best option to kill it with a dump?

Thanks in advance for any help you can provide.
~Marcus
Last edited by marcus121; 06-05-2009 at 11:52 AM..
# 2  
Old 06-05-2009
you can try 'truss -p <myProcPID>' and guesstimate where it might be stuck - look into 'man truss' for details.
# 3  
Old 06-05-2009
It depends on the OS you're using...use something like truss to latch onto the running process and see what it is doing and if that doesn't work kill it with SIGQUIT or SIGABRT...both of which should produce a core file for debugging later.
# 4  
Old 06-05-2009
Quote:
Originally Posted by shamrock
It depends on the OS you're using...use something like truss to latch onto the running process and see what it is doing and if that doesn't work kill it with SIGQUIT or SIGABRT...both of which should produce a core file for debugging later.
.... unless you 'ulimit -c 0' (I believe), but worth trying nevertheless.
# 5  
Old 06-05-2009
Quote:
Originally Posted by vgersh99
.... unless you 'ulimit -c 0' (I believe), but worth trying nevertheless.
Agree so that's a check the O/P will have to do before sending the sigquit/abrt signal to the process.
# 6  
Old 06-05-2009
Thanks Folks
Apparently I do not have truss available to me.

Code:
/home/mal> man truss
No manual entry for truss
/home/mal> which truss
/usr/bin/which: no truss in ( ... )

Additionally, it looks like ulimit might be something a Sys Admin would use, not a developer like me. Is that correct?

So I think my best option, from the way it sounds, is to just use the kill dash-6 (SIGABRT) option. Thanks anyway everyone. I appreciate your suggestions.
~Marcus
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