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Memory leaks when interacting with ROOT.
From: |
Elias Salomão Helou Neto |
Subject: |
Memory leaks when interacting with ROOT. |
Date: |
Thu, 22 Jul 2010 03:38:28 -0300 |
Hello, this is my first post.
I am trying to interface Octave with ROOT to be able to read some large files
in their format. I am, however, experiencing memory leaks when loading .oct
files linked against the ROOT library. While it is obviously related to ROOT, I
believe it is because of some flag I should set when using mkoctfile, that's
why i am posting this message here.
Consider the following piece of code:
//File memtest.cc
#include <octave/oct.h>
#include <root/TFile.h>
DEFUN_DLD( memtest, args, , "Tests for memory leak." )
{
return( octave_value() );
}
If I compile it using:
mkoctfile $(root-config --libs --noauxlibs | sed s/-pthread// | sed
s/-rdynamic//) -o memtest.oct memtest.cc
and repeatedly run
memtest; clear all;
from octave's prompt, I can go from the starting 9MB footprint to several
hundreds of megabytes and more.
The command inside $() expands to
-L/usr/lib/root -lCore -lCint -lRIO -lNet -lHist -lGraf -lGraf3d -lGpad -lTree
-lRint -lPostscript -lMatrix -lPhysics -lz -lm -ldl
As I understand, the -rdynamic is default for mkoctfile. Could the remotion of
"-pthreads" be the cause of the problem, or is there any other tweak in the
compilation flags to fix the leak? How should I pass -pthreads to mkoctfile?
I honestly do not believe that such obvious issue to be a bug in Octave or
ROOT, but rather that it is a compilation issue.
I will appreciate any advice.
Elias.
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