Re: [Valgrind-users] Running Valgrind on ELF/ python/ boost based executables

[Satya V. G. <gup...@ne...>]

I made the suggested change (bumped up the Stack size to 512 pages instead
of the 16) and continue to have another problem. 

I have only 256MB RAM in my device and when I bumped up the stack to 512
pages as suggested, all processes go to sleep. The change in stack size
obviously changed the behavior of Valgrind.

The original problem I had was that VG_(strcmp) in callgrind caused a
SIGSEGV. The reason it was suggested that I bump up the stack size was that
Boost libraries use very long names. 

In my mind, I am better off limiting the size of the two strings that are
offered to VG_(strcmp) to some MAX_STRING_SIZE instead of increasing the
stack size. However, I do not know what is a reasonable value for
MAX_STRING_SIZE? Does anyone have a suggestion on what size I should use
here?

Thanks

SVG

-----Original Message-----
From: bar...@gm... [mailto:bar...@gm...] On Behalf
Of Bart Van Assche
Sent: Sunday, June 13, 2010 6:06 AM
To: Satya V. Gupta
Cc: val...@li...
Subject: Re: [Valgrind-users] Running Valgrind on ELF/ python/ boost based
executables

On Sun, Jun 13, 2010 at 11:47 AM, Satya V. Gupta <gup...@ne...>
wrote:
> I have a supervisory process that is kicked off by an ELF executable 
> which in turn invokes some ELF/ python script/ executables based child
processes.
> I wish to run valgrind with --tool=callgrind and be able to inject 
> valgrind into all processes. So far I have tried to run the 
> supervisory process with --trace-children=yes and of course
--tool=callgrind switches.
>
> Any ELF based executable process stays up but valgrind receives a 
> SIGSEGV from all the others. It leaves behind an identical call stack 
> strace with a bunch of exception handlers that pass through the main 
> python executable and a bunch of boost libraries.
>
> Does anyone have recommendations on how to run python/ boost based 
> executable?

Instead of asking the same question twice, you should try the suggestion
that was posted in reply to your message on the valgrind-developers mailing
list (see also
http://sourceforge.net/mailarchive/forum.php?thread_name=201006122144.03178.
jseward%40acm.org&forum_name=valgrind-developers).

Bart.




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