Re: gdb with root

Art,

In general I use "gdb root.exe"
However to attach gdb to a running executable, I see a nice page by Axel describing
how to do it. See:
http://www.muenster.de/~naumana/rootgdb.html

see also: http://www.phenix.bnl.gov/software/tutorials/debuggingTips.html

Rene Brun

Arthur E. Snyder wrote:
> I'm trying to run gdb with root but can't see the symbols in my
> shared library.
>
> I use the following procedure:
>
> Start a root session. In another window on the same machine run the
> following macro:
>
> #!/bin/sh
> line=`ps -wwfu $USER | grep root.exe | grep -v grep | tail -1`
> if [ "$line" == "" ] ; then
> echo "NO ROOT session running"
> exit 1
> fi
> set $line
> exec gdb $8 $2
>
> This brings up root in one window and gdb in the other. Typing "cont" in
> the gdb window sets root session runing. That much works.
>
> I've compiled my shared library with -g and -O0. I've checked that
> my symbols are actually in the library.
>
> Despite this I can't see the sysmbols associated with the shared library
> routines even after I've executed them once to make sure they've been
> loaded.
>
> Is there some trick I'm missing?
>
> -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 Tue, 4 Jul 2006, Rene Brun wrote:
>
>
>> Art,
>>
>> I have translated the function in CERNLIB to C++. See attachment.
>> I just tested that it compiles and executes with some random input numbers.
>> Could you test it and let me know if it is what you want?
>>
>> Rene Brun
>>
>> Arthur E. Snyder wrote:
>>
>>> Hi again Rene,
>>>
>>> I see D-functions are not in mathlib yet though lots of other good stuff
>>> is. The so called beta term is available in cernlib (called RDJMNB) from
>>> the MATHLIB library. Is it possible to access this from ROOT?
>>>
>>> -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 Mon, 3 Jul 2006, Arthur E. Snyder wrote:
>>>
>>>
>>>
>>>> Hi Rene,
>>>>
>>>> I'm not looking for Breit-Wigner but for Wigner's so called D-function
>>>> (D(alpha,beta,gamma)) which are functions of anlges used in partial wave
>>>> analysis based on the Jacob and Wick formalism.
>>>>
>>>> The article I refer to proposes somekind of mathlib to collect in C++ form
>>>> a lot of mathmatical functions available dispersed among a lot libraries
>>>> of functions like cernlib, clhep, napl, and so forth. The D-functions are
>>>> just mentioned in one of the tables .. google hunted them out .. with a
>>>> search for "Wigner D-function C++".
>>>>
>>>> Anyway I need the D-function in a form I can access from ROOT. I may just
>>>> have to code the few lower order ones I need myself, but I'd rather have a
>>>> nice (well debugged) set from some package or class library.
>>>>
>>>> -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 Mon, 3 Jul 2006, Rene Brun wrote:
>>>>
>>>>
>>>>
>>>>> Art,
>>>>>
>>>>> I am curious to know the talk/article you are referring to ::)
>>>>> In ROOT we have the Breit-Wigner distributtion. See
>>>>> http://root.cern.ch/root/htmldoc/src/TMath.cxx.html#TMath:BreitWigner
>>>>> http://root.cern.ch/root/htmldoc/src/TRandom.cxx.html#TRandom:BreitWigner
>>>>>
>>>>> see also:
>>>>> http://root.cern.ch/root/roottalk/roottalk05/0954.html
>>>>>
>>>>> Rene Brun
>>>>>
>>>>> Snyder, Arthur E. wrote:
>>>>>
>>>>>
>>>>>> Does anybody know where to find a implentation of Wigner D-functions that I can use in ROOT?
>>>>>>
>>>>>> I found a talk/article by Rene where they are mentioned but the implentation seems to be in
>>>>>> the future.
>>>>>>
>>>>>> -Art S.
>>>>>>
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: owner-roottalk_at_pcroot.cern.ch on behalf of Fine, Valeri
>>>>>> Sent: Sun 7/2/2006 6:56 PM
>>>>>> To: nasim; roottalk_at_pcroot.cern.ch
>>>>>> Subject: RE: [ROOT] geting the values stored in the histograms.
>>>>>>
>>>>>>
>>>>>> You need either
>>>>>> http://root.cern.ch/root/htmldoc/TH1.html#TH1:GetBinLowEdge
>>>>>> or
>>>>>> http://root.cern.ch/root/htmldoc/TH1.html#TH1:GetBinCenter
>>>>>>
>>>>>> Valeri
>>>>>>
>>>>>>
>>>>>>
>>>>>>> There are two ways:
>>>>>>>
>>>>>>> 1. Each concrete histogram class is derived from TArray class
>>>>>>> http://root.cern.ch/root/htmldoc/TH1F.html
>>>>>>> This means one can treat each histogram object as a plain array of
>>>>>>> "float" number and use it as such. (For example method "[int]} returns
>>>>>>> what you want)
>>>>>>>
>>>>>>> TH1F *histogram = new TH1F( some parameters);
>>>>>>> TH1F &bins = *histogram;
>>>>>>> for (int i=0; i< 100; i++)
>>>>>>> printf(" Bin %i contains the value %f\n", i, bins[i]);
>>>>>>>
>>>>>>> 2. One can use the methods like TH1::GetBin<XXX>
>>>>>>> , where XXX could be "Center", "Content", "Error" etc
>>>>>>> see doc please
>>>>>>> http://root.cern.ch/root/htmldoc/TH1.html#TH1:GetBinContent
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>> Hope this helps.
>>>>>>>
>>>>>>> ----
>>>>>>> Best regards
>>>>>>> Valeri
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> -----Original Message-----
>>>>>>>> From: owner-roottalk_at_pcroot.cern.ch
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>> [mailto:owner-roottalk_at_pcroot.cern.ch] On
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> Behalf Of nasim
>>>>>>>> Sent: Sunday, July 02, 2006 7:43 PM
>>>>>>>> To: roottalk_at_pcroot.cern.ch
>>>>>>>> Subject: [ROOT] geting the values stored in the histograms.
>>>>>>>>
>>>>>>>>
>>>>>>>> Hi,
>>>>>>>> If we have one dimensional histogram with 100 entries.
>>>>>>>> Is it possible to extract the value of its x axis for each entry?
>>>>>>>>
>>>>>>>> Any help would be appreciated,
>>>>>>>>
>>>>>>>> Nasim
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>
Received on Wed Jul 12 2006 - 08:46:21 MEST