1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 ////////////////////////////////////////////////////////////////////////
20 // AliRunDigitizer.cxx
22 // Manager object for merging/digitization
24 // Instance of this class manages the digitization and/or merging of
25 // Sdigits into Digits.
27 // Only one instance of this class is created in the macro:
28 // AliRunDigitizer * manager =
29 // new AliRunDigitizer(nInputStreams,SPERB);
30 // where nInputStreams is number of input streams and SPERB is
31 // signals per background variable, which determines how combinations
32 // of signal and background events are generated.
33 // Then instances of specific detector digitizers are created:
34 // AliMUONDigitizer *dMUON = new AliMUONDigitizer(manager)
35 // and the I/O configured (you have to specify input files
36 // and an output file). The manager connects appropriate trees from
37 // the input files according a combination returned by AliMergeCombi
38 // class. It creates TreeD in the output and runs once per
39 // event Digitize method of all existing AliDetDigitizers
40 // (without any option). AliDetDigitizers ask manager
41 // for a TTree with input (manager->GetInputTreeS(Int_t i),
42 // merge all inputs, digitize it, and save it in the TreeD
43 // obtained by manager->GetTreeD(). Output events are stored with
44 // numbers from 0, this default can be changed by
45 // manager->SetFirstOutputEventNr(Int_t) method. The particle numbers
46 // in the output are shifted by MASK, which is taken from manager.
48 // The default output is to the signal file (stream 0). This can be
49 // changed with the SetOutputFile(TString fn) method.
51 // Single input file is permitted. Maximum kMaxStreamsToMerge can be merged.
52 // Input from the memory (on-the-fly merging) is not yet
53 // supported, as well as access to the input data by invoking methods
54 // on the output data.
56 // Access to the some data is via gAlice for now (supposing the
57 // same geometry in all input files), gAlice is taken from the first
58 // input file on the first stream.
60 // Example with MUON digitizer, no merging, just digitization
62 // AliRunDigitizer * manager = new AliRunDigitizer(1,1);
63 // manager->SetInputStream(0,"galice.root");
64 // AliMUONDigitizer *dMUON = new AliMUONDigitizer(manager);
67 // Example with MUON digitizer, merge all events from
68 // galice.root (signal) file with events from bgr.root
69 // (background) file. Number of merged events is
70 // min(number of events in galice.root, number of events in bgr.root)
72 // AliRunDigitizer * manager = new AliRunDigitizer(2,1);
73 // manager->SetInputStream(0,"galice.root");
74 // manager->SetInputStream(1,"bgr.root");
75 // AliMUONDigitizer *dMUON = new AliMUONDigitizer(manager);
78 // Example with MUON digitizer, save digits in a new file digits.root,
79 // process only 1 event
81 // AliRunDigitizer * manager = new AliRunDigitizer(2,1);
82 // manager->SetInputStream(0,"galice.root");
83 // manager->SetInputStream(1,"bgr.root");
84 // manager->SetOutputFile("digits.root");
85 // AliMUONDigitizer *dMUON = new AliMUONDigitizer(manager);
86 // manager->SetNrOfEventsToWrite(1);
89 ////////////////////////////////////////////////////////////////////////
93 #include <Riostream.h>
99 #include "TParticle.h"
104 #include "AliDigitizer.h"
105 #include "AliHeader.h"
106 #include "AliMergeCombi.h"
108 #include "AliRunDigitizer.h"
109 #include "AliStream.h"
111 ClassImp(AliRunDigitizer)
113 //_______________________________________________________________________
114 AliRunDigitizer::AliRunDigitizer():
120 fNrOfEventsToWrite(0),
121 fNrOfEventsWritten(0),
122 fCopyTreesFromInput(0),
130 fTreeDTPCBaseName(0),
131 fTreeTPCSBaseName(0),
134 fCombinationFileName(0),
138 // default ctor, where no new objects can be created
139 // do not use this ctor, it is supplied only for root needs
141 for (Int_t i=0;i<kMaxStreamsToMerge;i++) {
142 fArrayTreeS[i]=fArrayTreeH[i]=fArrayTreeTPCS[i]=fArrayTreeTRDS[i]=NULL;
147 //_______________________________________________________________________
148 AliRunDigitizer::AliRunDigitizer(const AliRunDigitizer& dig):
155 fNrOfEventsToWrite(0),
156 fNrOfEventsWritten(0),
157 fCopyTreesFromInput(0),
165 fTreeDTPCBaseName(0),
166 fTreeTPCSBaseName(0),
169 fCombinationFileName(0),
178 //_______________________________________________________________________
179 void AliRunDigitizer::Copy(AliRunDigitizer&) const
181 Fatal("Copy","Not installed\n");
185 //_______________________________________________________________________
186 AliRunDigitizer::AliRunDigitizer(Int_t nInputStreams, Int_t sperb):
187 TTask("AliRunDigitizer","The manager for Merging"),
188 fkMASKSTEP(10000000),
193 fNrOfEventsToWrite(-1),
194 fNrOfEventsWritten(0),
195 fCopyTreesFromInput(-1),
200 fNinputs(nInputStreams),
202 fInputStreams(new TClonesArray("AliStream",nInputStreams)),
203 fTreeDTPCBaseName("TreeD_75x40_100x60_150x60_"),
204 fTreeTPCSBaseName("TreeS_75x40_100x60_150x60_"),
205 fCombi(new AliMergeCombi(nInputStreams,sperb)),
206 fCombination(kMaxStreamsToMerge),
207 fCombinationFileName(0),
211 // ctor which should be used to create a manager for merging/digitization
213 if (nInputStreams == 0) {
214 Error("AliRunDigitizer","Specify nr of input streams");
217 for (Int_t i=0;i<kMaxStreamsToMerge;i++) {
218 fArrayTreeS[i]=fArrayTreeH[i]=fArrayTreeTPCS[i]=fArrayTreeTRDS[i]=NULL;
222 for (Int_t i=1;i<kMaxStreamsToMerge;i++) {
223 fkMASK[i] = fkMASK[i-1] + fkMASKSTEP;
226 TClonesArray &lInputStreams = *fInputStreams;
227 // the first Input is open RW to be output as well
228 new(lInputStreams[0]) AliStream("UPDATE");
229 for (Int_t i=1;i<nInputStreams;i++) {
230 new(lInputStreams[i]) AliStream("READ");
233 for (Int_t i=0; i<kMaxStreamsToMerge; i++) fInputFiles[i]=0;
236 //_______________________________________________________________________
237 AliRunDigitizer::~AliRunDigitizer() {
240 // do not delete subtasks, let the creator delete them
241 if (GetListOfTasks())
242 GetListOfTasks()->Clear("nodelete");
244 delete fInputStreams;
248 //_______________________________________________________________________
249 void AliRunDigitizer::AddDigitizer(AliDigitizer *digitizer)
251 // add digitizer to the list of active digitizers
252 this->Add(digitizer);
255 //_______________________________________________________________________
256 void AliRunDigitizer::SetInputStream(Int_t i, const char *inputFile)
258 if (i > fInputStreams->GetLast()) {
259 Error("SetInputStream","Input stream number too high");
262 static_cast<AliStream*>(fInputStreams->At(i))->AddFile(inputFile);
265 //_______________________________________________________________________
266 void AliRunDigitizer::Digitize(Option_t* option)
268 // get a new combination of inputs, connect input trees and loop
269 // over all digitizers
271 // take gAlice from the first input file. It is needed to access
273 // If gAlice is already in memory, use it
275 if (!static_cast<AliStream*>(fInputStreams->At(0))->ImportgAlice()) {
276 cerr<<"gAlice object not found in the first file of "
277 <<"the 1st stream"<<endl;
282 cerr<<"False from InitGlobal"<<endl;
285 Int_t eventsCreated = 0;
286 // loop until there is anything on the input in case fNrOfEventsToWrite < 0
287 while ((eventsCreated++ < fNrOfEventsToWrite) || (fNrOfEventsToWrite < 0)) {
288 if (!ConnectInputTrees()) break;
290 // loop over all registered digitizers and let them do the work
291 ExecuteTasks(option);
298 //_______________________________________________________________________
299 Bool_t AliRunDigitizer::ConnectInputTrees()
301 // fill arrays fArrayTreeS, fArrayTreeH and fArrayTreeTPCS with
302 // pointers to the correct events according fCombination values
303 // null pointers can be in the output, AliDigitizer has to check it
308 Int_t eventNr[kMaxStreamsToMerge], delta[kMaxStreamsToMerge];
309 fCombi->Combination(eventNr, delta);
310 for (Int_t i=0;i<fNinputs;i++) {
312 AliStream *iStream = static_cast<AliStream*>(fInputStreams->At(i));
313 if (!iStream->NextEventInStream(serialNr)) return kFALSE;
314 fInputFiles[i]=iStream->CurrentFile();
315 sprintf(treeName,"TreeS%d",serialNr);
316 tree = static_cast<TTree*>(iStream->CurrentFile()->Get(treeName));
317 if (fArrayTreeS[i]) {
318 delete fArrayTreeS[i];
321 fArrayTreeS[i] = tree;
322 sprintf(treeName,"TreeH%d",serialNr);
323 tree = static_cast<TTree*>(iStream->CurrentFile()->Get(treeName));
324 if (fArrayTreeH[i]) {
325 delete fArrayTreeH[i];
328 fArrayTreeH[i] = tree;
329 sprintf(treeName,"%s%d",fTreeTPCSBaseName,serialNr);
330 tree = static_cast<TTree*>(iStream->CurrentFile()->Get(treeName));
331 if (fArrayTreeTPCS[i]) {
332 delete fArrayTreeTPCS[i];
333 fArrayTreeTPCS[i] = 0;
335 fArrayTreeTPCS[i] = tree;
336 sprintf(treeName,"TreeS%d_TRD",serialNr);
337 tree = static_cast<TTree*>(iStream->CurrentFile()->Get(treeName));
338 if (fArrayTreeTRDS[i]) {
339 delete fArrayTreeTRDS[i];
340 fArrayTreeTRDS[i] = 0;
342 fArrayTreeTRDS[i] = tree;
343 } else if (delta[i] != 0) {
344 Error("ConnectInputTrees","Only delta 0 or 1 is implemented");
351 //_______________________________________________________________________
352 Bool_t AliRunDigitizer::InitGlobal()
354 // called once before Digitize() is called, initialize digitizers and output
356 TList* subTasks = GetListOfTasks();
358 subTasks->ForEach(AliDigitizer,Init)();
363 //_______________________________________________________________________
364 void AliRunDigitizer::SetOutputFile(TString fn)
365 // the output will be to separate file, not to the signal file
367 fOutputFileName = fn;
368 (static_cast<AliStream*>(fInputStreams->At(0)))->ChangeMode("READ");
372 //_______________________________________________________________________
373 Bool_t AliRunDigitizer::InitOutputGlobal()
375 // Creates the output file, called by InitEvent()
378 fn = fOutputDirName + '/' + fOutputFileName;
379 fOutput = new TFile(fn,"update");
381 cerr<<"AliRunDigitizer::InitOutputGlobal(): file "<<fn.Data()<<" was opened"<<endl;
383 if (fOutput) return kTRUE;
384 Error("InitOutputGlobal","Could not create output file.");
389 //_______________________________________________________________________
390 void AliRunDigitizer::InitEvent()
392 // Creates TreeDxx in the output file, called from Digitize() once for
393 // each event. xx = fEvent
396 cerr<<"AliRunDigitizer::InitEvent: fEvent = "<<fEvent<<endl;
398 // if fOutputFileName was not given, write output to signal file
399 if (fOutputFileName == "") {
400 fOutput = (static_cast<AliStream*>(fInputStreams->At(0)))->CurrentFile();
404 sprintf(treeName,"TreeD%d",fEvent);
405 fTreeD = static_cast<TTree*>(fOutput->Get(treeName));
407 fTreeD = new TTree(treeName,"Digits");
408 fTreeD->Write(0,TObject::kOverwrite);
411 // tree for ITS fast points
412 sprintf(treeName,"TreeR%d",fEvent);
413 fTreeR = static_cast<TTree*>(fOutput->Get(treeName));
415 fTreeR = new TTree(treeName,"Reconstruction");
416 fTreeR->Write(0,TObject::kOverwrite);
419 // special tree for TPC
420 sprintf(treeName,"%s%d",fTreeDTPCBaseName,fEvent);
421 fTreeDTPC = static_cast<TTree*>(fOutput->Get(treeName));
423 fTreeDTPC = new TTree(treeName,"TPC_Digits");
424 fTreeDTPC->Write(0,TObject::kOverwrite);
427 // special tree for TRD
428 sprintf(treeName,"TreeD%d_TRD",fEvent);
429 fTreeDTRD = static_cast<TTree*>(fOutput->Get(treeName));
431 fTreeDTRD = new TTree(treeName,"TRD_Digits");
432 fTreeDTRD->Write(0,TObject::kOverwrite);
437 //_______________________________________________________________________
438 void AliRunDigitizer::FinishEvent()
440 // called at the end of loop over digitizers
444 if (fCopyTreesFromInput > -1) {
446 i = fCopyTreesFromInput;
447 sprintf(treeName,"TreeK%d",fCombination[i]);
448 fInputFiles[i]->Get(treeName)->Clone()->Write();
449 sprintf(treeName,"TreeH%d",fCombination[i]);
450 fInputFiles[i]->Get(treeName)->Clone()->Write();
453 fNrOfEventsWritten++;
472 //_______________________________________________________________________
473 void AliRunDigitizer::FinishGlobal()
475 // called at the end of Exec
476 // save unique objects to the output file
479 this->Write(0,TObject::kOverwrite);
480 if (fCopyTreesFromInput > -1) {
481 fInputFiles[fCopyTreesFromInput]->Get("TE")->Clone()->Write();
488 //_______________________________________________________________________
489 Int_t AliRunDigitizer::GetNParticles(Int_t event) const
491 // return number of particles in all input files for a given
492 // event (as numbered in the output file)
493 // return -1 if some file cannot be accessed
497 for (Int_t i = 0; i < fNinputs; i++) {
498 sumI = GetNParticles(GetInputEventNumber(event,i), i);
499 if (sumI < 0) return -1;
505 //_______________________________________________________________________
506 Int_t AliRunDigitizer::GetNParticles(Int_t /* event */, Int_t /* input */) const
508 // return number of particles in input file input for a given
509 // event (as numbered in this input file)
510 // return -1 if some error
512 // Must be revised in the version with AliStream
517 TFile *file = ConnectInputFile(input);
519 Error("GetNParticles","Cannot open input file");
523 // find the header and get Nprimaries and Nsecondaries
524 TTree* tE = (TTree *)file->Get("TE") ;
526 Error("GetNParticles","input file does not contain TE");
531 tE->SetBranchAddress("Header", &header);
532 if (!tE->GetEntry(event)) {
533 Error("GetNParticles","event %d not found",event);
537 cerr<<"Nprimary: "<< header->GetNprimary()<<endl;
538 cerr<<"Nsecondary: "<<header->GetNsecondary()<<endl;
540 return header->GetNprimary() + header->GetNsecondary();
544 //_______________________________________________________________________
545 Int_t* AliRunDigitizer::GetInputEventNumbers(Int_t event) const
547 // return pointer to an int array with input event numbers which were
548 // merged in the output event event
550 // simplified for now, implement later
551 Int_t * a = new Int_t[kMaxStreamsToMerge];
552 for (Int_t i = 0; i < fNinputs; i++) {
558 //_______________________________________________________________________
559 Int_t AliRunDigitizer::GetInputEventNumber(Int_t event, Int_t /* input */) const
561 // return an event number of an eventInput from input file input
562 // which was merged to create output event event
564 // simplified for now, implement later
568 //_______________________________________________________________________
569 TParticle* AliRunDigitizer::GetParticle(Int_t i, Int_t event) const
571 // return pointer to particle with index i (index with mask)
574 Int_t input = i/fkMASKSTEP;
575 return GetParticle(i,input,GetInputEventNumber(event,input));
578 //_______________________________________________________________________
579 TParticle* AliRunDigitizer::GetParticle(Int_t /* i */, Int_t /* input */,
580 Int_t /* event */) const
582 // return pointer to particle with index i in the input file input
583 // (index without mask)
584 // event is the event number in the file input
585 // return 0 i fit does not exist
587 // Must be revised in the version with AliStream
591 TFile *file = ConnectInputFile(input);
593 Error("GetParticle","Cannot open input file");
597 // find the header and get Nprimaries and Nsecondaries
598 TTree* tE = (TTree *)file->Get("TE") ;
600 Error("GetParticle","input file does not contain TE");
605 tE->SetBranchAddress("Header", &header);
606 if (!tE->GetEntry(event)) {
607 Error("GetParticle","event %d not found",event);
613 sprintf(treeName,"TreeK%d",event);
614 TTree* tK = static_cast<TTree*>(file->Get(treeName));
616 Error("GetParticle","input file does not contain TreeK%d",event);
619 TParticle *particleBuffer;
621 tK->SetBranchAddress("Particles", &particleBuffer);
624 // algorithmic way of getting entry index
625 // (primary particles are filled after secondaries)
627 if (i<header->GetNprimary())
628 entry = i+header->GetNsecondary();
630 entry = i-header->GetNprimary();
631 Int_t bytesRead = tK->GetEntry(entry);
632 // new ((*fParticles)[nentries]) TParticle(*fParticleBuffer);
634 return particleBuffer;
639 //_______________________________________________________________________
640 void AliRunDigitizer::ExecuteTask(Option_t* option)
642 // overwrite ExecuteTask to do Digitize only
644 if (!IsActive()) return;
646 fHasExecuted = kTRUE;
650 //_______________________________________________________________________
651 TString AliRunDigitizer::GetInputFileName(const Int_t input, const Int_t order) const
653 // returns file name of the order-th file in the input stream input
654 // returns empty string if such file does not exist
655 // first input stream is 0
656 // first file in the input stream is 0
657 TString fileName("");
658 if (input >= fNinputs) return fileName;
659 AliStream * stream = static_cast<AliStream*>(fInputStreams->At(input));
660 if (order > stream->GetNInputFiles()) return fileName;
661 fileName = stream->GetFileName(order);