> On Wed, 2012-08-22 at 12:21 +0100, Andy Buckle wrote: >> On 22 August 2012 12:11, dirk <dirkmay...@comcast.net> wrote: >> > Hello all - >> > I'm trying to learn valgrind for oct files... can anyone share a working >> > example I could study? >> > Hope so, thanks >> > - dirk >> >> Invoke octave from the command line of your OS, in a way that calls >> your oct-file function. Run the whole of octave through valgrind. You >> will probably want to generate suppressions by doing this and not >> calling your oct-file. >> >> In the past i have also used pre-processor to change around the code, >> so i can call parts of my code from the OS, instead of from Octave. >> This is much faster than running the whole of Octave through valgrind. >> >> Which bit do you want examples of?
On 22 August 2012 20:58, dirk <dirkmay...@comcast.net> wrote: > thanks for the tips Andy. > I suspect my issues are just newbie problems, so any & all advice is > helpful. Here's an example point of confusion: > > $ valgrind octave --eval exit &> octave_grind.txt > > gets me this in the .txt: > > ==17994== LEAK SUMMARY: > ==17994== definitely lost: 3,108 bytes in 116 blocks > ==17994== indirectly lost: 27,994 bytes in 201 blocks > ==17994== possibly lost: 659,439 bytes in 3,101 blocks > ==17994== still reachable: 34,585,196 bytes in 6,407 blocks > ==17994== suppressed: 0 bytes in 0 blocks > > which seems to be telling that I lose 3k by just starting and stopping > octave... hard to believe. > > If it matters, I'm running octave 3.4.2 under linux, installed via > apt-get. > > - dirk (ooops, I forgot to reply-all) It's common to see that. I get the same kind of thing. It is probably Octave (or the libraries it depends on). Run that and make a suppression file to exclude the things that are not your fault. Then run your code through valgrind in a similar way, and you should only see things that are your fault. Write a bit of bad code on purpose to see what you get. Andy -- /* andy buckle */ ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Octave-dev mailing list Octave-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/octave-dev
