gSystem->Exec in compiled code

I recetently updated to a new versioin of root. This one:

• *
• W E L C O M E to R O O T *
• *
• Version 4.04/02b 3 June 2005 *
• *
• You are welcome to visit our Web site *
• http://root.cern.ch *
• *

I find the gSystem->Exec and related functions like gSystem->CopyFile no longer work in compiled code. They still operate in interpreted macros, but in my compliled code (that copies image files to my public directory) command like gSystem->Exec("mv *.gif ~/public_html/.") no longer work. Neither do they complain or give any hint what's wrong. It's not "klog"!. The same routines work fine if I intrepret the code.

Is this a bug or feature? Is there a fix other than just using intrepretation?

-Art S.

A.E. Snyder, Group EC                        \!c*p?/
SLAC Mail Stop #95                          ((.   .))
Box 4349                                        |
Stanford, Ca, USA, 94309                      '\|/`
e-mail:snyder_at_slac.stanford.edu                 o
phone:650-926-2701                              _
http://www.slac.stanford.edu/~snyder          BaBar
FAX:650-926-2657                          Collaboration

On Wed, 31 Aug 2005, Rene Brun wrote:

> Art,
>
> Do something like
>
> TFile *f = new TFile("myntuple.root","recreate");
> TNtuple *t = new TNtuple(...
> //loop on t->Fill
>
> t->Write();
>
> //that's all
>
> Rene Brun
>
> On Tue, 30 Aug 2005,
> Arthur E. Snyder wrote:
>
> >
> >
> > I'd like to write out a read back a simple TNtuple. This seems to be kind
> > of compicated with "keys" and such. Isn't there a simple way to do it?
> > Like t->Write("filename")?
> >
> > -Art S.
> >
> > A.E. Snyder, Group EC \!c*p?/
> > SLAC Mail Stop #95 ((. .))
> > Box 4349 |
> > Stanford, Ca, USA, 94309 '\|/`
> > e-mail:snyder_at_slac.stanford.edu o
> > phone:650-926-2701 _
> > http://www.slac.stanford.edu/~snyder BaBar
> > FAX:650-926-2657 Collaboration
> >
> >
> >
> > On Thu, 25 Aug 2005, Philippe Canal wrote:
> >
> >>> the root reads it very slowly(Is it normal?).
> >>
> >> In general this should not be the case (i.e. reading an entry from the
> >> original files
> >> or from the merge files should be about the same).
> >>
> >>> I want to split again this file to smaller files, Is it possible?
> >>
> >> You can simply clone the large tree but setting the TTree maximum
> >> size to a low number (see TTree::SetMaxTreeSize)
> >> (see $ROOTSYS/tutorials/copytree*.C)
> >>
> >> Cheers,
> >> Philippe.
> >>
> >> -----Original Message-----
> >> From: owner-roottalk_at_pcroot.cern.ch [mailto:owner-roottalk_at_pcroot.cern.ch]
> >> On Behalf Of Saeid Paktinat Mehdiabadi
> >> Sent: Thursday, August 25, 2005 8:58 AM
> >> To: roottalk (Mailing list discussing all aspects of the ROOT system)
> >> Subject: [ROOT] Split a root file!
> >>
> >> Hello ROOT developers,
> >>
> >> I had something like 100 root files with same structure,
> >>
> >> I used, TChain::Merge(), to merge them and make a single file, this file is
> >> very big and the root reads it very slowly(Is it normal?).
> >>
> >> I want to split again this file to smaller files, Is it possible?
> >>
> >> What's the solution?
> >>
> >> Thank you,
> >>
> >> Saeid
> >>
> >>
> >
>
Received on Wed Aug 31 2005 - 20:32:26 MEST