Re: Memory Leak in GDO

[Rene Cornils]

On Wed, 27 Jun 2001, Richard Frith-Macdonald wrote:

>
> On Wednesday, June 27, 2001, at 09:44 AM, Rene Cornils wrote:
>
> > On Tue, 26 Jun 2001, Richard Frith-Macdonald wrote:
> >
> >>
> >> On Tuesday, June 26, 2001, at 04:52 PM, Rene Cornils wrote:
> >>
> >>> Hi there,
> >>>
> >>> I encountered a significant memory leak when using GDO (base 1.0.1).
> >>> Even
> >>> for very simple programs, both client and server consume more and more
> >>> memory on every transaction (the server side seems to be more affected
> >>> by
> >>> this problem).
> >>> Below you can find some simple source code for demonstration.
> >>>
> >>> Is this a bug or am I doing something wrong? Any help is highly
> >>> appreciated.
> >>
> >> Is this a problem for you in 1.0.2?
> >>
> >> It doesn't seem to happen on my system.
> >>
> >> I *did* turn off caching of port coders by default between those two
> >> versions -
> >> perhaps there was a bug in the caching code?
> >>
> >
> > I've checked the simple example with 1.0.2. Although memory growing
> > seems not to be as rapid as before, both sides still comsume more and
> > more memory. The server starts with 2.4MB (top), reaching more than
> > 10MB after some minutes (client running).
> >
> > If this problem doesn't occur on your system, what's the trick?
> > I'm using gcc 2.95.2, ffcall-1.8a, make-1.0.1, objc-1.0.1,
> > base-1.0.2 compiled with
> >     LIBS=-posix; ./configure --prefix=/usr/local/GNUstep
> >     make shared=yes debug=no install
>
> I left the client and server running for hours - without any measurable
> memory leak.
>
> I'm running using gcc-3.0, with make and base from CVS
>
> I'm not using ffcall on my system ... I'll look there for possible leaks.
>

Ideed, the problem is caused by the usage of ffcall! I've removed
it and recompiled GNUstep -- and now it works without flaws.

Thank you very mouch Richard.
Rene


BTW: What are the drawbacks of avoiding ffcall (as far as I
understood, it enables GDO to pass messages between different
machine types; e.g. Linux-ix86 and LinuxPPC).