Re: TFile crash in ~TFile

NO !! When creating an object with new the object is allocated in the heap.

Rene Brun

Arthur E. Snyder wrote:
> "on stack" means use "new", right?
>
> -Art
>
> A.E. Snyder, Group EC \!c*p?/
> SLAC Mail Stop #95 ((. .))
> Box 4349 |
> Stanford, Ca, USA, 94309 '\|/`
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> FAX:650-926-2657 Collaboration
>
>
>
> On Thu, 12 Jun 2008, Philippe Canal wrote:
>
>> Hi,
>>
>> See TTree::ChangeFile which may be triggered in your case.
>> You may have to increase increase the default limit
>> TTree::SetMaxTreeSize(very_large_number);
>> or allocate the TFile on the stack reather than heap.
>>
>> Cheers,
>> Philippe.
>>
>> -----Original Message-----
>> From: owner-roottalk_at_root.cern.ch
>> [mailto:owner-roottalk_at_root.cern.ch] On
>> Behalf Of Arthur E. Snyder
>> Sent: Thursday, June 12, 2008 10:16 AM
>> To: Arthur E. Snyder
>> Cc: roottalk_at_lxbuild091.cern.ch
>> Subject: [ROOT]TFile crash in ~TFile
>>
>> I get a segmentation violation in ~TFile as it is trying to close my
>> file. The trace back is below.
>>
>> The line pointed to in my code is 985. However, the error appears to not
>> during |write| but when the TFile is destroyed on leave this scope at
>> the
>> "}".
>>
>> Other identical jobs run fine. This is the largest data set
>> processed. It
>> worked previously; here I've just added a few more items to output
>> n-tuple
>> for a total of 32. There are 47G available where it's being written
>> which
>> should be plenty and in any case it's seg violation not a out of space
>> error.
>>
>> Any ideas?
>>
>> -Thanks, Art S.
>>
>> code snip:
>> for(Int_t i=0; i<nHist; i++) {
>> if(h[i]==0) continue;
>> h[i]->Write();
>> }
>>
>> //write out the n-tuple
>> tup->write(); <---line 985
>> }
>>
>> trace back:
>> *** Break *** segmntation violation
>> Using host libthread_db library "/lib/tls/libthread_db.so.1".
>> Attaching to program: /proc/26766/exe, process 26766
>> [Thread debugging using libthread_db enabled]
>> [New Thread 1073746912 (LWP 26766)]
>> 0x0394e51e in __waitpid_nocancel () from /lib/tls/libc.so.6
>> Thread 1 (Thread 1073746912 (LWP 26766)):
>> #0 0x0394e51e in __waitpid_nocancel () from /lib/tls/libc.so.6
>> #1 0x038e31d4 in do_system () from /lib/tls/libc.so.6
>> #2 0x01cd7d7f in system () from /lib/tls/libpthread.so.0
>> #3 0x00948d6e in TUnixSystem::Exec (this=0x9ab1430,
>> at unix/src/TUnixSystem.cxx:1768
>> #4 0x00949208 in TUnixSystem::StackTrace (this=0x9ab1430)
>> at unix/src/TUnixSystem.cxx:1953
>> #5 0x00947147 in TUnixSystem::DispatchSignals (this=0x9ab1430,
>> sig=kSigSegmentationViolation) at unix/src/TUnixSystem.cxx:936
>> #6 0x00945369 in SigHandler (sig=kSigSegmentationViolation)
>> at unix/src/TUnixSystem.cxx:338
>> #7 0x0094bcda in sighandler (sig=11) at unix/src/TUnixSystem.cxx:3142
>> #8 <signal handler called>
>> #9 0x039db79b in main_arena () from /lib/tls/libc.so.6
>> #10 0x007c4b5a in TDirectory::WriteKeys (this=0xbffd6ac0)
>> at base/src/TDirectory.cxx:1951
>> #11 0x007c30a6 in TDirectory::SaveSelf (this=0xbffd6ac0, force=false)
>> at base/src/TDirectory.cxx:1452
>> #12 0x007c2eda in TDirectory::Save (this=0xbffd6ac0)
>> at base/src/TDirectory.cxx:1413
>> #13 0x007bfa20 in TDirectory::Close (this=0xbffd6ac0)
>> at base/src/TDirectory.cxx:500
>> #14 0x007cd7d0 in TFile::Close (this=0xbffd6ac0, option=0xc8b3ba "")
>> at base/src/TFile.cxx:716
>> #15 0x007cba9c in TFile::~TFile () at include/TInetAddress.h:69
>>
>> #16 0x014da328 in HiggsFinder::Terminate (this=0xa546af0)
>> at HiggsFinder.cc:985 <----mycode
>>
>> #17 0x05735dd3 in TTreePlayer::Process (this=0xab211d8,
>> selector=0xa546af0,
>> option=0x4020330 "", nentries=1234567890, firstentry=0)
>> at treeplayer/src/TTreePlayer.cxx:2664
>> #18 0x03f77184 in TTree::Process (this=0xae4c190, selector=0xa546af0,
>> option=0x4020330 "", nentries=1234567890, firstentry=0)
>> at tree/src/TTree.cxx:4793
>> #19 0x03f4ba53 in TChain::Process (this=0xae4c190, selector=0xa546af0,
>> option=0x4020330 "", nentries=1234567890, firstentry=0)
>> at tree/src/TChain.cxx:1750
>> #20 0x03fc9223 in G__G__Tree_224_0_56 ()
>> from
>> /afs/slac.stanford.edu/g/babar/package/root/5.14-00e/Linux24SL3_i386_gcc323-
>>
>> noOptimize-Debug/lib/libTree.so
>> #21 0x00f13ca5 in Cint::G__ExceptionWrapper (
>> funcp=0x3fc8f74 <G__G__Tree_224_0_56(G__value*, char const*,
>> G__param*, int)>, result7=0xbffe43e0, funcname=0xa176658 "\001",
>> libp=0xbffe0e00, hash=0)
>> at cint/src/Api.cxx:355
>> #22 0x00fd9922 in G__call_cppfunc (result7=0xbffe43e0, libp=0xbffe0e00,
>> ifunc=0xa176658, ifn=0) at cint/src/v6_newlink.cxx:465
>> #23 0x00fc3b04 in G__interpret_func (result7=0xbffe43e0,
>> funcname=0xbffe3fe0 "Process", libp=0xbffe0e00, hash=735,
>> p_ifunc=0xa176658, funcmatch=1, memfunc_flag=1)
>> at cint/src/v6_ifunc.cxx:5167
>> #24 0x00fac1ab in G__getfunction (item=0xbffe6806 "Process(finder)",
>> known3=0xbffe5c1c, memfunc_flag=1) at cint/src/v6_func.cxx:2600
>> #25 0x0105d357 in G__getstructmem (store_var_type=112,
>> varname=0xbffe5880 "U", membername=0xbffe6806 "Process(finder)",
>> tagname=0xbffe4be0 "toff", known2=0xbffe5c1c, varglobal=0x10e1ac0,
>> objptr=2) at cint/src/v6_var.cxx:4284
>> #26 0x01052bf2 in G__getvariable (item=0xbffe6800
>> "toff->Process(finder)",
>> known2=0xbffe5c1c, varglobal=0x10e1ac0, varlocal=0xbfff1cf0)
>> at cint/src/v6_var.cxx:3129
>> #27 0x00fa06ea in G__getitem (item=0xbffe6800 "toff->Process(finder)")
>> at cint/src/v6_expr.cxx:1846
>> #28 0x00f9ed46 in G__getexpr (expression=0xbffe7d90
>> "toff->Process(finder)")
>> at cint/src/v6_expr.cxx:1315
>> #29 0x00ff7c5d in G__exec_function (
>> statement=0xbffe7d90 "toff->Process(finder)", pc=0xbffe7d8c,
>> piout=0xbffe7d80, plargestep=0xbffe7d70, presult=0xbffe8190)
>> at cint/src/v6_parse.cxx:457
>> #30 0x01001352 in G__exec_statement () at cint/src/v6_parse.cxx:4211
>> #31 0x00ffc53f in G__exec_if () at cint/src/v6_parse.cxx:2480
>> #32 0x01000db2 in G__exec_statement () at cint/src/v6_parse.cxx:4102
>> #33 0x00fc5d7e in G__interpret_func (result7=0xbfff58e0,
>> funcname=0xbfff54e0 "batch", libp=0xbfff2300, hash=514,
>> p_ifunc=0xa415570, funcmatch=1, memfunc_flag=0)
>> at cint/src/v6_ifunc.cxx:5954
>> #34 0x00faca9e in G__getfunction (item=0xbfff6670 "batch()",
>> known3=0xbfff5a8c, memfunc_flag=0) at cint/src/v6_func.cxx:2813
>> #35 0x00fa0781 in G__getitem (item=0xbfff6670 "batch()")
>> at cint/src/v6_expr.cxx:1859
>> #36 0x00f9ed46 in G__getexpr (expression=0x9d7c960 "batch()")
>> at cint/src/v6_expr.cxx:1315
>> #37 0x00f91f67 in G__calc_internal (exprwithspace=0xbfff8f70 "batch()")
>> at cint/src/v6_expr.cxx:203
>> #38 0x0100878b in G__process_cmd (
>> line=0xe56cb2 ".X
>> /afs/slac.stanford.edu/u/ek/snyder/trial41/analysis-42/workdir/./batch.C",
>>
>> prompt=0x9abdd8c "", more=0x9abdd84, err=0xbfff97cc,
>> rslt=0xbfff97d0) at cint/src/v6_pause.cxx:2310
>> #39 0x0089d757 in TCint::ProcessLine (this=0x9abdd68,
>> line=0xe56cb2 ".X
>> /afs/slac.stanford.edu/u/ek/snyder/trial41/analysis-42/workdir/./batch.C",
>>
>> error=0xbfffa0e4) at meta/src/TCint.cxx:318
>> #40 0x0089d8dc in TCint::ProcessLineSynch (this=0x9abdd68,
>> line=0xe56cb2 ".X
>> /afs/slac.stanford.edu/u/ek/snyder/trial41/analysis-42/workdir/./batch.C",
>>
>> error=0xbfffa0e4) at meta/src/TCint.cxx:351
>> #41 0x007a2de3 in TApplication::ProcessFile (this=0x9aff010,
>> name=0xbfff9f23 "batch.C", error=0xbfffa0e4)
>> at base/src/TApplication.cxx:807
>> #42 0x007a2553 in TApplication::ProcessLine (this=0x9aff010,
>> line=0xbfff9f20 ".x batch.C", sync=false, err=0xbfffa0e4)
>> at base/src/TApplication.cxx:676
>> #43 0x0062087e in TRint::Run (this=0x9aff010, retrn=false)
>> at rint/src/TRint.cxx:328
>> #44 0x0804894e in main (argc=1, argv=0xbfffa1c4) at
>> main/src/rmain.cxx:29
>> Function batch() busy flag cleared
>>
>> 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
>>
>>
>>
>>
>>
>
Received on Thu Jun 12 2008 - 22:23:47 CEST