Re: [xml] xmlMemUsed() always returns 0 even when mem debug is activated

[Felip Manyé i Ballester <apaxeros gmail com>]

Thank your the answer. I know this was a borderline question, but my 
main concern was whether xml2-config output was good or not, and 
apparently it is. Anyway, I thank Daniel, Martin and you for answering 
my questions. I now know that you need to call:

xmlMemSetup(xmlMemFree, xmlMemMalloc, xmlMemRealloc, xmlMemoryStrdup);

before using xmlMemUsed. Maybe this point could be precised in the 
documentation ?

Regards,

Felip.

En/na Elvis Stansvik ha escrit:
> 2008/12/20 Felip Manyé i Ballester <apaxeros gmail com>:
>   
> > Thanks a lot for your answer Martin, when I call xmlMemSetup(), xmlMemUsed()
> > works with Debian and Ubuntu packages ! I had not understood its use before.
> >
> > I still don't know why my binary links with the system-wide dynamic library
> > and not the one I compiled, even though I explicitly invoke the good
> > xml2-config in my makefile (see previous message). Has anybody got an idea ?
> >     
>
> Probably because your dynamic linker looked in /usr/lib first. If
> you're on a Linux system, use the LD_LIBRARY_PATH environment variable
> to specify the path to the libraries, or use the -rpath linker option
> (not recommended).
>
> Anyway, this is not a libxml2 question, but a question about how
> dynamic linking works, which you can read up on Wikipedia and in the
> manual for your compiler/OS.
>
> Regards,
> Elvis
>
>   
> > Regards,
> >
> > Felip.
> >
> >
> > En/na Martin (gzlist) ha escrit:
> >
> > On 18/12/2008, apaxeros gmail com <apaxeros gmail com> wrote:
> >
> >
> > Hello,
> >
> > I've been trying to evaluate the amount of memory allocated using
> > xmlMemUsed. A similar question was asked in 2004:
> > http://mail.gnome.org/archives/xml/2004-March/msg00232.html,
> > and Daniel replied that mem debug had to be activated. That's why I
> > recompiled libxml2 (version 2.6.30, on Ubuntu 8.04) with the option
> > --with-mem-debug.
> >
> >
> > On my Debian box at least, the system libxml2 is already compiled with
> > that option, you just need to activate the debug malloc stuff by
> > calling:
> >
> >     xmlMemSetup(xmlMemFree, xmlMemMalloc, xmlMemRealloc, xmlMemoryStrdup);
> >
> > prior to doing any of this:
> >
> >
> >
> >  doc = xmlParseFile(argv[2]);
> >   if (doc == NULL)
> >   {
> >       printf ("%s could not be parsed\n", argv[2]);
> >       exit (1);
> >   }
> >   printf("Used memory: %d\n", xmlMemUsed());
> >   xmlDocDump(stdout, doc);
> >
> >
> > Perhaps I misunderstand, or Ubuntu fiddled with the package.
> >
> > Martin
> >
> >
> >
> > _______________________________________________
> > xml mailing list, project page  http://xmlsoft.org/
> > xml gnome org
> > http://mail.gnome.org/mailman/listinfo/xml
> >
> >
> >     
>
>