I am not by my computer, -gc3 is the switch to generate C calls instead of
PCODE?
On Jul 8, 2015 2:23 PM, "Andi Jahja" <andi.ja...@yahoo.co.id> wrote:
> Hi Ron:
>
> Sorry for I cannot post a reduced code. The application is quite huge and
> I do not know where it happened.
> Yes, I am using -gc3, but not aware where the recursion is. IMO, Przemek's
> example should demonstrate it.
>
> Andi
>
> On Wed, 8 Jul 2015 13:15:25 -0700
> Ron Pinkas <ron.pin...@xharbour.com> wrote:
>
> > Hi Andi,
> >
> > Could you kindly post a reduced sample?
> >
> > As long as you are not using -gc3 (as per Przemek observation) and/or
> recursion which exceeds the fixed limit, then I am not aware of such issue.
> >
> > Ron
> >
> > > On Jun 30, 2015, at 6:13 AM, Andi Jahja <andi.ja...@yahoo.co.id>
> wrote:
> > >
> > > Hi Przemek,
> > >
> > > Many thanks for explanation. Fixing it is beyond my capabilities. For
> the time being, xHarbour users have to be careful when playing with
> With-Object and/or For-Each constructs.
> > >
> > > Andi
> > >
> > > On Tue, 30 Jun 2015 13:45:41 +0200
> > > Przemyslaw Czerpak <dru...@poczta.onet.pl <mailto:
> dru...@poczta.onet.pl>> wrote:
> > >
> > >> On Mon, 29 Jun 2015, Andi Jahja wrote:
> > >>
> > >> Hi,
> > >>
> > >>> Hello,
> > >>> I randomly get this error message:
> > >>> "WITH OBJECT excessive nesting!"
> > >>> As per default build, HB_MAX_WITH_OBJECT is preset to 64.
> > >>> But I am very sure that my application does not have that much nests.
> > >>> This occurs when I repeatedly execute sub function containing WITH
> OBJECT.
> > >>> I suspect the counter is not released after a nest reached an "END"
> > >>> Anyone?
> > >>
> > >> After short checking current HVM code in xHarbour I can see two
> possible
> > >> reasons:
> > >>
> > >> 1. You are using recursion.
> > >> Due to limitation in xHarbour implementation FOR EACH and WITH
> OBJECT
> > >> cannot be used in algorithms using recursion because they can reach
> > >> HB_MAX_WITH_OBJECTS or HB_MAX_ENUMERATIONS limits.
> > >> It's very serious problem I reported nearly 10 years ago.
> > >> To resolve it it's necessary to redesign FOR EACH and WITH OBJECT
> > >> implementation in xHarbour. It would be nice to also eliminate
> > >> overhead caused by current code. Even if programmer does not use
> > >> above constructions then HVM in xHarbour executes additional code
> > >> to initialize and finally clean FOR EACH and WITH OBJECT counters
> > >> and containers on each PRG function call what reduces overall
> > >> performance. The implementation in Harbour does not have such
> > >> problems so it can be taken as base.
> > >>
> > >> 2. Looks that code executed for -gc3 output does not restore FOR EACH
> > >> and WITH OBJECT counters. Such additional cleanup it's yet another
> > >> overhead in current implementation which can be eliminated new one.
> > >> Example below illustrates it:
> > >>
> > >> #include "hbclass.ch"
> > >> proc main()
> > >> local i
> > >> for i := 1 to 100
> > >> begin sequence
> > >> with object i
> > >> if i < 100
> > >> break
> > >> endif
> > >> end with
> > >> endsequence
> > >> next
> > >> return
> > >>
> > >> This can be easy fixed anyhow I strongly suggest to start deeper
> > >> modifications which resolved also other problems.
> > >>
> > >> best regards,
> > >> Przemek
> > >
> > >
> > > Andi
>
>
>
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