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List:       r-sig-mac
Subject:    Re: [R-SIG-Mac] Valgrind on Snow Leopard or Lion
From:       Simon Urbanek <simon.urbanek () r-project ! org>
Date:       2011-11-27 22:32:43
Message-ID: DE21E184-098C-4B82-B27B-583D14EA40AA () r-project ! org
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Ruth,

On Nov 27, 2011, at 4:39 PM, Ruth Ripley wrote:

> I have been tying to get valgrind to run on Snow Leopard and Lion without much \
> success.

Make sure you get the latest SVN build. Valgrind releases notoriously don't work on \
Darwin. I had no problem using valgrind (from SVN) on both Lion an Snow Leopard (I \
would never use pipes to feed the code, but I tested your case and it worked).

A few usage hints: for more reliable debugging it is helpful to compile R with \
--with-valgrind-instrumentation=2 and typically it's a good idea to use \
--dsymutil=yes --read-var-info=yes --track-origins=yes on valgrind (--tool=memcheck \
is the default).

Cheers,
Simon


> I get reports of errors but the process tends to hang before exiting. It only \
> terminates occasionally after an error. Thus I cannot get leak reports. 
> For example: if ls.r contains the one line: ls()
> 
> R -d "valgrind --tool=memcheck" --no-save < ls.r
> 
> will produce the following and hang
> 
> ==32176== Memcheck, a memory error detector
> ==32176== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
> ==32176== Using Valgrind-3.8.0.SVN and LibVEX; rerun with -h for copyright info
> ==32176== Command: /Library/Frameworks/R.framework/Resources/bin/exec/x86_64/R \
> --vanilla ==32176==
> ==32176== Warning: ignored attempt to set SIGUSR2 handler in sigaction();
> ==32176==          the SIGUSR2 signal is used internally by Valgrind
> 
> R version 2.14.0 (2011-10-31)
> Copyright (C) 2011 The R Foundation for Statistical Computing
> ISBN 3-900051-07-0
> Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
> 
> R is free software and comes with ABSOLUTELY NO WARRANTY.
> You are welcome to redistribute it under certain conditions.
> Type 'license()' or 'licence()' for distribution details.
> 
> Natural language support but running in an English locale
> 
> R is a collaborative project with many contributors.
> Type 'contributors()' for more information and
> 'citation()' on how to cite R or R packages in publications.
> 
> Type 'demo()' for some demos, 'help()' for on-line help, or
> 'help.start()' for an HTML browser interface to help.
> Type 'q()' to quit R.
> 
> > ls()
> character(0)
> > 
> 
> valgrind --tool=memcheck ls
> 
> works fine. So an R problem rather than a valgrind one, I fear.
> 
> Any help would be greatly appreciated.
> 
> Thanks,
> 
> Ruth
> -- 
> Ruth M. Ripley,                         Email:ruth@stats.ox.ac.uk
> Dept. of Statistics,                    http://www.stats.ox.ac.uk/~ruth/
> University of Oxford,                   Tel:   01865 282857
> 1 South Parks Road, Oxford OX1 3TG, UK  Fax:   01865 272595
> 
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> 
> 

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