thanks Rene,
> I cannot reproduce your problem with your version of SelectorTest.C. Could
> you run the small program that I suggested yesterday.
> do:
> root -l mymain.C
> or
> root > .x mymain.C
> where mymain.C is:
> int mymain()
> {
> TChain *mychain_data=new TChain("PAUReco");
> mychain_data->Add("ntuple.root");
>
> return mychain_data->Process("SelectorTest.C");
> }
yes, using "root -l mymain.C", it works
but i wish to compile mymain.C (g++ ...) : i do not wish to use "root
command" to execute the macro but instead to type "mymain" to start the
program. If i compile it (successfully), it crashes at
executation at the line
mychain_data->Process("SelectorTest.C")
John Idarraga explained me kindly that it would use CINT when doing "mychain_data->Process("SelectorTest.C");" and that it would be the reason of the problem.
he suggested me something like :
gSystem->Load("SelectorTest_C.so")
SelectorTest *c=new SelectorTest();
mychain_data->Process(c);
then it works in compiled mode
His solution works fine,
but i don't understand why the instruction
mychain_data->Process("SelectorTest.C")
crashes in a compiled program\
)
thanks for your patience
> Salut Marc,
>
> Marc Escalier wrote:
>> thanks Rene,
>>
>> it works, thanks to your help
>>
>> but if you have time, may i understand the following behaviour :
>>
>> *one produces a dictionnary .so, for example in a "non compiled" program
>> with
>> mychain_data->Process("SelectorTest.C+")
>>
> When you specify the "+, your file SelectorTest.C is COMPILED with the normal
> compiler.
> This is done via the ACLIC processor that
> -generates the dictionary file and compiles it
> -compiles the file SelectorTest.C
> -generates the shared lib SelectorTest.so out of the dictionary file and
> SelectorTest.o
>> *then, put the dependencies in the Makefile
> You do not need a Makefile to do this. You better use root.exe that does it
> automatically for you
>>
>> *then the compiled program works (doesn't crash) only if i put :
>> mychain_data->Process("SelectorTest.C+")
>>
>> ==>whereas if i put in the compiled program :
>> mychain_data->Process("SelectorTest.C") // here without the "+"
>> because the .so yet exists.
>>
>> then it crashes :
>> would you know why ?
>>
> I cannot reproduce your problem with your version of SelectorTest.C. Could
> you run the small program that I suggested yesterday.
> do:
> root -l mymain.C
> or
> root > .x mymain.C
> where mymain.C is:
> int mymain()
> {
> TChain *mychain_data=new TChain("PAUReco");
> mychain_data->Add("ntuple.root");
>
> return mychain_data->Process("SelectorTest.C");
> }
>
>
> Rene
>
>
>
>> (just in case, full log here :
>> /afs/cern.ch/user/e/escalier/public/MinimalSelector
>>
>> it crashes at this instruction (of the compiled program) :
>> mychain_data->Process("SelectorTest.C")
>>
>> putting some prints, i see that it doesn't do begin the "Begin" of the
>> selector
>>
>> i put a complete log : "crash.txt"
>> (i had to do LD_LIBRARY_PATH=$LD_LIBRARY_PATH:. before to launch the
>> program
>> )
>>
>> *** Break *** segmentation violation
>> Attaching to program: /proc/14683/exe, process 14683
>> [Thread debugging using libthread_db enabled]
>> 0xffffe410 in __kernel_vsyscall ()
>> #1 0x00c9b5b3 in __waitpid_nocancel () from /lib/libc.so.6
>> #2 0x00c4007b in do_system () from /lib/libc.so.6
>> #3 0x00da3ead in system () from /lib/libpthread.so.0
>> #4 0xf7a7a11d in TUnixSystem::Exec(char const*) ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libCore.so
>> #5 0xf7a7f62b in TUnixSystem::StackTrace() ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libCore.so
>> #6 0xf7a803cd in TUnixSystem::DispatchSignals(ESignals) ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libCore.so
>> #7 0xf7a804cd in SigHandler(ESignals) ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libCore.so
>> #8 0xf7a76d82 in sighandler(int) ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libCore.so
>> #9 <signal handler called>
>> #10 0x00c6428a in _IO_seekpos_unlocked () from /lib/libc.so.6
>> #11 0x00c62cc9 in fsetpos@@GLIBC_2.2 () from /lib/libc.so.6
>> #12 0xf722d33c in G__interpret_func ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libCint.so
>> #13 0xf71d0be0 in Cint::G__CallFunc::ExecInterpretedFunc(G__value*) ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libCint.so
>> #14 0xf71d0de7 in Cint::G__CallFunc::Execute(void*) ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libCint.so
>> #15 0xf7a63a1b in TCint::CallFunc_ExecInt(void*, void*) const ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libCore.so
>> #16 0xf65fedae in TSelectorCint::Begin(TTree*) ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libTree.so
>> #17 0xf4c39fa0 in TTreePlayer::Process(TSelector*, char const*, long long,
>> long long) ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libTreePlayer.so
>> #18 0xf4c39b35 in TTreePlayer::Process(char const*, char const*, long long,
>> long long) ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libTreePlayer.so
>> #19 0xf660ac36 in TTree::Process(char const*, char const*, long long, long
>> long) ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libTree.so
>> #20 0xf65dece9 in TChain::Process(char const*, char const*, long long, long
>> long) ()
>> from
>> /afs/cern.ch/atlas/software/builds/DetCommon/15.6.9/InstallArea/i686-slc5-gcc43-opt/lib/libTree.so
>> #21 0x0804b253 in main ()
>> A debugging session is active.
>>
>> Inferior 1 [process 14683] will be detached.)
>>
>> ==========================================
>> ==========================================
>> ==========================================
>> On Tue, 13 Jul 2010, Rene Brun wrote:
>>
>>> Marc,
>>>
>>> You need to generate a dictionary for your selector class. If you do not
>>> know how to do it, I strongly recommend to use ACLIC in teh following way
>>> that will automatically generate the dictionary for you and also the
>>> processing will be faster.
>>>
>>> Replace your main.C by mymain.C as
>>> int mymain()
>>> {
>>> TChain *mychain_data=new TChain("PAUReco");
>>> mychain_data->Add("ntuple.root");
>>>
>>> return mychain_data->Process("SelectorTest.C+"); //note the "+"
>>> }
>>>
>>> and execute it with
>>> root -l mymain.C
>>>
>>> Rene Brun
>>>
>>> Marc Escalier wrote:
>>>> Dear Rooters,
>>>>
>>>> i occur a problem of compilation when using a class created with a
>>>> MakeSelector :
>>>>
>>>> SelectorTest.o: In function `SelectorTest::IsA() const':
>>>> SelectorTest.C:(.text._ZNK12SelectorTest3IsAEv[SelectorTest::IsA()
>>>> const]+0x7): undefined reference to `SelectorTest::Class()'
>>>> SelectorTest.o:(.rodata._ZTV12SelectorTest[vtable for
>>>> SelectorTest]+0xe8): undefined reference to
>>>> `SelectorTest::ShowMembers(TMemberInspector&, char*)'
>>>> SelectorTest.o:(.rodata._ZTV12SelectorTest[vtable for
>>>> SelectorTest]+0xec): undefined reference to
>>>> `SelectorTest::Streamer(TBuffer&)'
>>>>
>>>> while i don't occur with one created with MakeClass()
>>>>
>>>> Theses members are not in the class SelectorTest but rather in the
>>>> TObject from which SelectorTest derivates
>>>> An expert told me that the reason would be that the class created by
>>>> MakeSelector would derive from "TObject"...
>>>>
>>>> would you have an idea of what is missing in my code and/or Makefile ?
>>>>
>>>> To make you loose the less time possible, i provide a very minimum
>>>> standalone example here :
>>>> lxplus :
>>>>
>>>> /afs/cern.ch/user/e/escalier/public/MinimalSelector
>>>>
>>>> any suggestion would be appreciated
>>>>
>>>> Thank you
>>>>
>>>> (
>>>> just in case you would not have time to see the code on lxplus, the
>>>> Makefile is :
>>>> main: SelectorTest.o main.o
>>>> /bin/rm -f main
>>>> g++ -o main `root-config --ldflags --libs --glibs` -lRooFit
>>>> -lRooFitCore -lMinuit main.o SelectorTest.o
>>>>
>>>> SelectorTest.o: SelectorTest.C
>>>> g++ -c `root-config --cflags` SelectorTest.C
>>>>
>>>> main.o: main.C
>>>> g++ -c `root-config --cflags` main.C
>>>>
>>>> clean: /bin/rm *.o
>>>> )
>>>>
>>>
>>>
>>
>
>
Received on Wed Jul 14 2010 - 12:54:11 CEST
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