TTree::Write() Problem

From: Hengtong Ding <dinght_at_iopp.ccnu.edu.cn>
Date: Wed, 25 Oct 2006 21:17:02 +0800 (CST)

Hi all,

I first compiled my code by .L code.C++ and then load "code_C.so" to run some functions. The compilation is quit OK, but when I run some events, erros happened ,

• Break *** segmentation violation Generating stack trace...
  /usr/bin/addr2line: root.exe: No such file or directory
  /usr/bin/addr2line: root.exe: No such file or directory
  0x41e03bdc in <unknown> from
  /direct/alice/dinght/HVQMuon/NEW/RAA/submit/old/testdir/./code_C.so
  0x40848f56 in G__ExceptionWrapper + 0x42 from
  /direct/data01/CERN/alice/alisoft/Root/v5-12-00/lib/libCint.so.5.12
  0x408e473f in G__call_cppfunc + 0x2a7 from
  /direct/data01/CERN/alice/alisoft/Root/v5-12-00/lib/libCint.so.5.12
  ... ... ... 0x402114ac in TCint::ProcessLine(char const*, TInterpreter::EErrorCode*) + 0x138 from
  /direct/data01/CERN/alice/alisoft/Root/v5-12-00/lib/libCore.so.5.12
  0x4021160e in TCint::ProcessLineSynch(char const*, TInterpreter::EErrorCode*) + 0x46 from
  /direct/data01/CERN/alice/alisoft/Root/v5-12-00/lib/libCore.so.5.12
  0x4014ad41 in TApplication::ProcessFile(char const*, int*) + 0x8b9 from
  /direct/data01/CERN/alice/alisoft/Root/v5-12-00/lib/libCore.so.5.12
  0x4014a40d in TApplication::ProcessLine(char const*, bool, int*) + 0x5ab from /direct/data01/CERN/alice/alisoft/Root/v5-12-00/lib/libCore.so.5.12 0x415187ec in TRint::Run(bool) + 0x23a from
  /direct/data01/CERN/alice/alisoft/Root/v5-12-00/lib/libRint.so.5.12
  0x08048899 in main + 0x71 from root.exe 0x42015704 in __libc_start_main + 0xe4 from /lib/tls/libc.so.6 0x08048799 in _Unwind_Resume + 0x31 from root.exe Function Run() busy flag cleared

But finally I can get the output "test.root" in which histograms are included and are OK but no trees.

My code is listed as below :

  TFile *outfile = new TFile("test.root","recreate");   const Int_t ArraySize = 13 ;
  Double_t *store_pp=0;
  if((store_pp=new Double_t[ArraySize]) == NULL) {

      cout << "can't allocate more memory for store_pp,terminating.\n" ;
      exit(0) ;

  }
TTree *tree = new TTree("tree","variables in pp AA and AAquenched") ;   

tree->Branch("bpp",store_pp,"ptQ/D:ptM:ptmu:pzQ:pzM:pzMu:etaQ:etaM:etamu:yQ:yM:ymu:weightpp");
/*

some histograms are defined here !
*/

/*

One loop in which
the values are assigned to store_pp[0], store_pp[1] ... store_pp[12] and "tree -> Fill()" is done. Also the histograms are filled here. */
// some histograms Write() ;

tree -> Write() ;
outfile->Close();

---

My root version is v5-12-00, OS is Linux 2.4.20-8smp #1 SMP Redhat 9.

I don't know why this happened, as when I write a testcode in which only Tree are defined(no histograms) in the way above, it runs OK. Also if I don't use the TTree in the above code, the codes also run OK. Maybe I ask too many memoris by "new TH1D()" when defining the histograms and after that you could not use a "new TTree() " ?

Any suggestion will be appreciate.
Thanks in advance.

Hengtong

-- 
 ************************************************
 *             Hengtong Ding                    *                    
 *                                              *
 *  Address:  Institute of Particle Physics,    *
 *            Central China Normal University   * 
 *            Wuhan, 430079,  P. R. China       *
 *  Tel:      0086 27 6786 7946 (lab)           *
 *            0086 27 8715 0351 (dormitory)     *
 *  Fax:      0086 27 6786 3213                 *
 *  Email:    dinght_at_iopp.ccnu.edu.cn           *
 *	      dinghengtong_at_hotmail.com          *
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Received on Wed Oct 25 2006 - 15:07:30 MEST