Hi Pasha,
Indeed, gObjectTable->Print() indicates that everything has been
cleaned up . However, I am looking at the process root.exe with 'top'.
It starts like:
PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND
4524 eddy 1 33 0 18M 12M sleep 0:00 0.06% root.exe
But after 1000 cycles in the 'read()' macro it is:
4524 eddy 1 -25 0 19M 14M sleep 0:09 2.18% root.exe
Somehow, it has allocated an additional 1Mb.
Best regards,
Eddy Offermann
ps. I am running Sun/Solaris for SPARC 2.00/11
>
>
> Eddy Offermann writes:
> > Dear Root-ers,
> >
> > two questions:
> >
> > 1) two weeks ago, I had a question concerning cleanup of objects.
> > The answer of Rene Brun seems only to solve part of the problem:
> > the program does not crash anymore but we still have
> > a memory leak. Below is a macro that makes a root file, followed
> > by a macro that keeps on opening and closing it.
> > Even when I comment out the "cd" and "tree" statements, the
> > program size keeps growing.
> > Maybe it is silly to be worried about an increase of 1Mb after about
> > opening/closing 1000 files but if anybody could shed some light
> > on this, I would appreciate it.
> >
> > make()
> > {
> > gROOT->Reset();
> >
> > TFile *hfile = new TFile( "foo.root", "RECREATE" );
> > TDirectory *sub = hfile->mkdir("sub");
> > sub->cd();
> > TTree *tree = new TTree( "tree", "tree" );
> >
> > Int_t tmp = 100;
> > Int_t split = 1;
> > Int_t bsize = 64000;
> > TBranch *branch = tree->Branch("branch", &tmp, "", bsize);
> > tree->Fill();
> >
> > hfile->Write();
> > delete tree;
> > hfile->Close();
> > delete hfile;
> > }
> >
> > read()
> > {
> > for (Int_t i=1; i >0; i++) <---------- **** this never stops....
> > {
> > printf("%d\n",i);
> >
> > TFile *hfile = new TFile("foo.root","READ");
> > hfile->cd("sub");
> >
> > TTree *tree = (TTree*) gDirectory->Get("T"); <----- **** wrong, should be
> TTree *tree = (TTree*) gDirectory->Get("tree");
> > delete tree;
> >
> > hfile->Close();
> > delete hfile;
> > }
> > }
> >
> >
> I fixed `read()' in the example above :
> --------------------------------------------------------------------------------
> read() {
> for (Int_t i=1; i < 1000; i++) {
> TFile *hfile = new TFile("foo.root","READ");
> TTree *tree = (TTree*) gDirectory->Get("/sub/tree"); //
> delete tree;
> delete hfile;
> }
> }
> --------------------------------------------------------------------------------
> and ran it 1000 times. The output of gObjectTable->Print() says that it is
> TKey objects which are not being deleted. The rest things are pretty
> much under control (sorry, it is still ROOT 2.00/08).
>
> -regards, pasha.
> --------------------------------------------------------------------------------
> root [0] gObjectTable->Print()
>
> Object statistics
> class cnt on heap size total size heap size
> ============================================================================
> TOrdCollection 5 5 40 200 200
> TList 33 33 40 1320 1320
> TGXW 1 1 84 84 84
> TFileHandler 2 2 20 40 40
> TSignalHandler 1 1 24 24 24
> TGX11 1 1 196 196 196
> TGaxis 1 0 132 132 0
> THashList 8 8 44 352 352
> TSystemDirectory 1 1 36 36 36
> TObject 38 38 12 456 456
> THashTable 8 8 36 288 288
> TRint 1 1 120 120 120
> TGClient 1 1 76 76 76
> TCint 1 1 208 208 208
> TPostScript 1 1 764 764 764
> TBenchmark 1 1 52 52 52
> TStyle 2 2 656 1312 1312
> TClass 19 19 64 1216 1216
> TROOT 1 0 240 240 0
> TGuiFactory 1 1 28 28 28
> TRootGuiFactory 1 1 28 28 28
> TGPicturePool 1 1 28 28 28
> TGMimeTypes 1 1 32 32 32
> TGeometry 1 1 64 64 64
> TGFrame 1 1 52 52 52
> TClassTable 1 1 12 12 12
> TObjectTable 1 1 24 24 24
> TStopwatch 1 0 56 56 0
> TEnv 1 1 24 24 24
> TRandom 1 1 32 32 32
> TAxis 3 0 100 300 0
> TUnixSystem 1 1 252 252 252
> ----------------------------------------------------------------------------
> Total: 141 135 3576 8048 7320
> ============================================================================
>
> root [1] .L eddie.C
> root [2] make()
> root [2] read()
> root [3] gObjectTable->Print()
>
> Object statistics
> class cnt on heap size total size heap size
> ============================================================================
> TOrdCollection 5 5 40 200 200
> TList 58 58 40 2320 2320
> TGXW 1 1 84 84 84
> TFileHandler 2 2 20 40 40
> TSignalHandler 1 1 24 24 24
> TGX11 1 1 196 196 196
> TGaxis 1 0 132 132 0
> THashList 8 8 44 352 352
> TSystemDirectory 1 1 36 36 36
> TObject 38 38 12 456 456
> THashTable 8 8 36 288 288
> TRint 1 1 120 120 120
> TGClient 1 1 76 76 76
> TCint 1 1 208 208 208
> TPostScript 1 1 764 764 764
> TBenchmark 1 1 52 52 52
> TStyle 2 2 656 1312 1312
> TClass 43 43 64 2752 2752
> TROOT 1 0 240 240 0
> TGuiFactory 1 1 28 28 28
> TRootGuiFactory 1 1 28 28 28
> TGPicturePool 1 1 28 28 28
> TGMimeTypes 1 1 32 32 32
> TGeometry 1 1 64 64 64
> TGFrame 1 1 52 52 52
> TClassTable 1 1 12 12 12
> TObjectTable 1 1 24 24 24
> TStopwatch 1 0 56 56 0
> TEnv 1 1 24 24 24
> TRandom 1 1 32 32 32
> TAxis 3 0 100 300 0
> TUnixSystem 1 1 252 252 252
> TKey 999 999 80 79920 79920
> TBaseClass 6 6 24 144 144
> ----------------------------------------------------------------------------
> Total: 1195 1189 3680 90648 89920
> ============================================================================
>
>
>
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