[u/mrichter/AliRoot.git] / STEER / AliSimulation.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
// class for running generation, simulation and digitization                 //
//                                                                           //
// Hits, sdigits and digits are created for all detectors by typing:         //
//                                                                           //
//   AliSimulation sim;                                                      //
//   sim.Run();                                                              //
//                                                                           //
// The Run method returns kTRUE in case of successful execution.             //
// The number of events can be given as argument to the Run method or it     //
// can be set by                                                             //
//                                                                           //
//   sim.SetNumberOfEvents(n);                                               //
//                                                                           //
// The name of the configuration file can be specified by                    //
//                                                                           //
//   sim.SetConfigFile("...");                                               //
//                                                                           //
// The generation of particles and the simulation of detector hits can be    //
// switched on or off by                                                     //
//                                                                           //
//   sim.SetRunGeneration(kTRUE);   // generation of primary particles       //
//   sim.SetRunSimulation(kFALSE);  // but no tracking                       //
//                                                                           //
// For which detectors sdigits and digits will be created, can be steered    //
// by                                                                        //
//                                                                           //
//   sim.SetMakeSDigits("ALL");     // make sdigits for all detectors        //
//   sim.SetMakeDigits("ITS TPC");  // make digits only for ITS and TPC      //
//                                                                           //
// The argument is a (case sensitive) string with the names of the           //
// detectors separated by a space. An empty string ("") can be used to       //
// disable the creation of sdigits or digits. The special string "ALL"       //
// selects all available detectors. This is the default.                     //
//                                                                           //
// The creation of digits from hits instead of from sdigits can be selected  //
// by                                                                        //
//                                                                           //
//   sim.SetMakeDigitsFromHits("TRD");                                       //
//                                                                           //
// The argument is again a string with the selected detectors. Be aware that //
// this feature is not available for all detectors and that merging is not   //
// possible, when digits are created directly from hits.                     //
//                                                                           //
// Backgound events can be merged by calling                                 //
//                                                                           //
//   sim.MergeWith("background/galice.root", 2);                             //
//                                                                           //
// The first argument is the file name of the background galice file. The    //
// second argument is the number of signal events per background event.      //
// The default value for this is 1. MergeWith can be called several times    //
// to merge more than two event streams. It is assumed that the sdigits      //
// were already produced for the background events.                          //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////


#include "AliSimulation.h"
#include "AliRunLoader.h"
#include "AliRun.h"
#include "AliModule.h"
#include "AliGenerator.h"
#include "AliRunDigitizer.h"
#include "AliDigitizer.h"
#include <TObjString.h>


ClassImp(AliSimulation)


//_____________________________________________________________________________
AliSimulation::AliSimulation(const char* name, const char* title) :
  TNamed(name, title)
{
// create simulation object with default parameters

  Init();
}

//_____________________________________________________________________________
AliSimulation::AliSimulation(const AliSimulation& sim) :
  TNamed(sim)
{
// copy constructor

  fRunGeneration = sim.fRunGeneration;
  fRunSimulation = sim.fRunSimulation;
  fMakeSDigits = sim.fMakeSDigits;
  fMakeDigits = sim.fMakeDigits;
  fMakeDigitsFromHits = sim.fMakeDigitsFromHits;
  fStopOnError = sim.fStopOnError;

  fNEvents = sim.fNEvents;
  fConfigFileName = sim.fConfigFileName;
  fGAliceFileName = sim.fGAliceFileName;
  fBkgrdFileNames = new TObjArray;
  for (Int_t i = 0; i < sim.fBkgrdFileNames->GetEntriesFast(); i++) {
    if (!sim.fBkgrdFileNames->At(i)) continue;
    fBkgrdFileNames->Add(sim.fBkgrdFileNames->At(i)->Clone());
  }

  fRunLoader = NULL;
}

//_____________________________________________________________________________
AliSimulation& AliSimulation::operator = (const AliSimulation& sim)
{
// assignment operator

  this->~AliSimulation();
  new(this) AliSimulation(sim);
  return *this;
}

//_____________________________________________________________________________
AliSimulation::~AliSimulation()
{
// clean up

  fBkgrdFileNames->Delete();
  delete fBkgrdFileNames;
}

//_____________________________________________________________________________
void AliSimulation::Init()
{
// set default parameters

  fRunGeneration = kTRUE;
  fRunSimulation = kTRUE;
  fMakeSDigits = "ALL";
  fMakeDigits = "ALL";
  fMakeDigitsFromHits = "";
  fStopOnError = kFALSE;

  fNEvents = 1;
  fConfigFileName = "Config.C";
  fGAliceFileName = "galice.root";
  fBkgrdFileNames = new TObjArray;
  fRegionOfInterest = kTRUE;

  fRunLoader = NULL;
}


//_____________________________________________________________________________
void AliSimulation::SetNumberOfEvents(Int_t nEvents)
{
// set the number of events for one run

  fNEvents = nEvents;
}

//_____________________________________________________________________________
void AliSimulation::SetConfigFile(const char* fileName)
{
// set the name of the config file

  fConfigFileName = fileName;
}

//_____________________________________________________________________________
void AliSimulation::MergeWith(const char* fileName, Int_t nSignalPerBkgrd)
{
// add a file with background events for merging

  TObjString* fileNameStr = new TObjString(fileName);
  fileNameStr->SetUniqueID(nSignalPerBkgrd);
  fBkgrdFileNames->Add(fileNameStr);
}


//_____________________________________________________________________________
Bool_t AliSimulation::Run(Int_t nEvents)
{
// run the generation, simulation and digitization

  if (nEvents > 0) fNEvents = nEvents;

  // generation and simulation -> hits
  if (fRunGeneration) {
    if (!gAlice) {
      Error("Run", "no gAlice object. Restart aliroot and try again.");
      return kFALSE;
    }
    if (gAlice->Modules()->GetEntries() > 0) {
      Error("Run", "gAlice was already run. Restart aliroot and try again.");
      return kFALSE;
    }
    if (!RunSimulation()) if (fStopOnError) return kFALSE;
  }

  // reopen the run loader
  if (fRunLoader) delete fRunLoader;
  fRunLoader = AliRunLoader::Open(fGAliceFileName.Data(),AliConfig::fgkDefaultEventFolderName,"UPDATE");
  if (!fRunLoader) {
    Error("Run", "no run loader found in file %s", 
	  fGAliceFileName.Data());
    return kFALSE;
  }
  fRunLoader->LoadgAlice();
  gAlice = fRunLoader->GetAliRun();
  if (!gAlice) {
    Error("Run", "no gAlice object found in file %s", 
	  fGAliceFileName.Data());
    return kFALSE;
  }

  // hits -> summable digits
  if (!fMakeSDigits.IsNull()) {
    if (!RunSDigitization(fMakeSDigits)) if (fStopOnError) return kFALSE;
  }

  // summable digits -> digits
  if (!fMakeDigits.IsNull()) {
    if (!RunDigitization(fMakeDigits, fMakeDigitsFromHits)) {
      if (fStopOnError) return kFALSE;
    }
  }

  // hits -> digits
  if (!fMakeDigitsFromHits.IsNull()) {
    if (fBkgrdFileNames->GetEntriesFast() > 0) {
      Warning("Run", "Merging and direct creation of digits from hits " 
	      "was selected for some detectors. "
	      "No merging will be done for the following detectors: %s",
	      fMakeDigitsFromHits.Data());
    }
    if (!RunHitsDigitization(fMakeDigitsFromHits)) {
      if (fStopOnError) return kFALSE;
    }
  }

  return kTRUE;
}

//_____________________________________________________________________________
Bool_t AliSimulation::RunSimulation()
{
// run the generation and simulation

  TStopwatch stopwatch;
  stopwatch.Start();

  Info("RunSimulation", "initializing gAlice with config file %s",
       fConfigFileName.Data());
  gAlice->Init(fConfigFileName.Data());
  fRunLoader = gAlice->GetRunLoader();
  if (!fRunLoader) {
    Error("RunSimulation", "gAlice has no run loader object. "
	  "Check your config file: %s", fConfigFileName.Data());
    return kFALSE;
  }
  fGAliceFileName = fRunLoader->GetFileName();

  if (!fRunSimulation) {
    if (!gAlice->Generator()) {
      Error("RunSimulation", "gAlice has no generator object. "
	    "Check your config file: %s", fConfigFileName.Data());
      return kFALSE;
    }
    gAlice->Generator()->SetTrackingFlag(0);
  }

  Info("RunSimulation", "running gAlice");
  gAlice->Run(fNEvents);

  Info("RunSimulation", "execution time:");
  stopwatch.Print();

  return kTRUE;
}

//_____________________________________________________________________________
Bool_t AliSimulation::RunSDigitization(const TString& detectors)
{
// run the digitization and produce summable digits

  TStopwatch stopwatch;
  stopwatch.Start();

  TString detStr = detectors;
  TObjArray* detArray = gAlice->Detectors();
  for (Int_t iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) {
    AliModule* det = (AliModule*) detArray->At(iDet);
    if (!det || !det->IsActive()) continue;
    if (IsSelected(det->GetName(), detStr)) {
      Info("RunSDigitization", "creating summable digits for %s", 
	   det->GetName());
      det->Hits2SDigits();
    }
  }

  if ((detStr.CompareTo("ALL") != 0) && !detStr.IsNull()) {
    Error("RunSDigitization", "the following detectors were not found: %s", 
	  detStr.Data());
    if (fStopOnError) return kFALSE;
  }

  Info("RunSDigitization", "execution time:");
  stopwatch.Print();

  return kTRUE;
}


//_____________________________________________________________________________
Bool_t AliSimulation::RunDigitization(const TString& detectors, 
				      const TString& excludeDetectors)
{
// run the digitization and produce digits from sdigits

  TStopwatch stopwatch;
  stopwatch.Start();

  Int_t nStreams = fBkgrdFileNames->GetEntriesFast() + 1;
  Int_t signalPerBkgrd = 1;
  if (nStreams > 1) signalPerBkgrd = fBkgrdFileNames->At(0)->GetUniqueID();
  AliRunDigitizer* manager = new AliRunDigitizer(nStreams, signalPerBkgrd);
  manager->SetInputStream(0, fGAliceFileName.Data());
  for (Int_t iStream = 1; iStream < nStreams; iStream++) {
    const char* fileName = ((TObjString*)
			    (fBkgrdFileNames->At(iStream-1)))->GetName();
    manager->SetInputStream(iStream, fileName);
  }

  TString detStr = detectors;
  TString detExcl = excludeDetectors;
  TObjArray* detArray = gAlice->Detectors();
  for (Int_t iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) {
    AliModule* det = (AliModule*) detArray->At(iDet);
    if (!det || !det->IsActive()) continue;
    if (IsSelected(det->GetName(), detStr) && 
	!IsSelected(det->GetName(), detExcl)) {
      AliDigitizer* digitizer = det->CreateDigitizer(manager);
      if (!digitizer) {
	Error("RunDigitization", "no digitizer for %s", det->GetName());
	if (fStopOnError) return kFALSE;
      } else {
	digitizer->SetRegionOfInterest(fRegionOfInterest);
      }
    }
  }

  if ((detStr.CompareTo("ALL") != 0) && !detStr.IsNull()) {
    Error("RunDigitization", "the following detectors were not found: %s", 
	  detStr.Data());
    if (fStopOnError) return kFALSE;
  }

  if (!manager->GetListOfTasks()->IsEmpty()) {
    Info("RunDigitization", "executing digitization");
    manager->Exec("");
  }
  delete manager;

  Info("RunDigitization", "execution time:");
  stopwatch.Print();

  return kTRUE;
}

//_____________________________________________________________________________
Bool_t AliSimulation::RunHitsDigitization(const TString& detectors)
{
// run the digitization and produce digits from hits

  TStopwatch stopwatch;
  stopwatch.Start();

  TString detStr = detectors;
  TObjArray* detArray = gAlice->Detectors();
  for (Int_t iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) {
    AliModule* det = (AliModule*) detArray->At(iDet);
    if (!det || !det->IsActive()) continue;
    if (IsSelected(det->GetName(), detStr)) {
      Info("RunHitsDigitization", "creating digits from hits for %s", 
	   det->GetName());
      det->Hits2Digits();
    }
  }

  if ((detStr.CompareTo("ALL") != 0) && !detStr.IsNull()) {
    Error("RunHitsDigitization", "the following detectors were not found: %s", 
	  detStr.Data());
    if (fStopOnError) return kFALSE;
  }

  Info("RunHitsDigitization", "execution time:");
  stopwatch.Print();

  return kTRUE;
}


//_____________________________________________________________________________
Bool_t AliSimulation::IsSelected(TString detName, TString& detectors) const
{
// check whether detName is contained in detectors
// if yes, it is removed from detectors

  // check if all detectors are selected
  if ((detectors.CompareTo("ALL") == 0) ||
      detectors.BeginsWith("ALL ") ||
      detectors.EndsWith(" ALL") ||
      detectors.Contains(" ALL ")) {
    detectors = "ALL";
    return kTRUE;
  }

  // search for the given detector
  Bool_t result = kFALSE;
  if ((detectors.CompareTo(detName) == 0) ||
      detectors.BeginsWith(detName+" ") ||
      detectors.EndsWith(" "+detName) ||
      detectors.Contains(" "+detName+" ")) {
    detectors.ReplaceAll(detName, "");
    result = kTRUE;
  }

  // clean up the detectors string
  while (detectors.Contains("  ")) detectors.ReplaceAll("  ", " ");
  while (detectors.BeginsWith(" ")) detectors.Remove(0, 1);
  while (detectors.EndsWith(" ")) detectors.Remove(detectors.Length()-1, 1);

  return result;
}
Commit	Line	Data
85a5290f	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	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	**************************************************************************/
	15
	16	/* $Id$ */
	17
	18	///////////////////////////////////////////////////////////////////////////////
	19	// //
	20	// class for running generation, simulation and digitization //
	21	// //
	22	// Hits, sdigits and digits are created for all detectors by typing: //
	23	// //
	24	// AliSimulation sim; //
	25	// sim.Run(); //
	26	// //
	27	// The Run method returns kTRUE in case of successful execution. //
	28	// The number of events can be given as argument to the Run method or it //
	29	// can be set by //
	30	// //
	31	// sim.SetNumberOfEvents(n); //
	32	// //
8e4a4643	33	// The name of the configuration file can be specified by //
85a5290f	34	// //
	35	// sim.SetConfigFile("..."); //
	36	// //
	37	// The generation of particles and the simulation of detector hits can be //
	38	// switched on or off by //
	39	// //
	40	// sim.SetRunGeneration(kTRUE); // generation of primary particles //
	41	// sim.SetRunSimulation(kFALSE); // but no tracking //
	42	// //
	43	// For which detectors sdigits and digits will be created, can be steered //
	44	// by //
	45	// //
	46	// sim.SetMakeSDigits("ALL"); // make sdigits for all detectors //
	47	// sim.SetMakeDigits("ITS TPC"); // make digits only for ITS and TPC //
	48	// //
	49	// The argument is a (case sensitive) string with the names of the //
	50	// detectors separated by a space. An empty string ("") can be used to //
	51	// disable the creation of sdigits or digits. The special string "ALL" //
	52	// selects all available detectors. This is the default. //
	53	// //
	54	// The creation of digits from hits instead of from sdigits can be selected //
	55	// by //
	56	// //
	57	// sim.SetMakeDigitsFromHits("TRD"); //
	58	// //
	59	// The argument is again a string with the selected detectors. Be aware that //
	60	// this feature is not available for all detectors and that merging is not //
	61	// possible, when digits are created directly from hits. //
	62	// //
	63	// Backgound events can be merged by calling //
	64	// //
	65	// sim.MergeWith("background/galice.root", 2); //
	66	// //
	67	// The first argument is the file name of the background galice file. The //
	68	// second argument is the number of signal events per background event. //
	69	// The default value for this is 1. MergeWith can be called several times //
	70	// to merge more than two event streams. It is assumed that the sdigits //
	71	// were already produced for the background events. //
	72	// //
	73	///////////////////////////////////////////////////////////////////////////////
	74
	75
	76	#include "AliSimulation.h"
	77	#include "AliRunLoader.h"
	78	#include "AliRun.h"
	79	#include "AliModule.h"
	80	#include "AliGenerator.h"
	81	#include "AliRunDigitizer.h"
4df28b43	82	#include "AliDigitizer.h"
85a5290f	83	#include <TObjString.h>
	84
	85
	86	ClassImp(AliSimulation)
	87
	88
	89	//_____________________________________________________________________________
8e4a4643	90	AliSimulation::AliSimulation(const char* name, const char* title) :
8e4a4643	91	TNamed(name, title)
85a5290f	92	{
	93	// create simulation object with default parameters
	94
8e4a4643	95	Init();
85a5290f	96	}
	97
	98	//_____________________________________________________________________________
	99	AliSimulation::AliSimulation(const AliSimulation& sim) :
8e4a4643	100	TNamed(sim)
85a5290f	101	{
	102	// copy constructor
	103
8e4a4643	104	fRunGeneration = sim.fRunGeneration;
	105	fRunSimulation = sim.fRunSimulation;
	106	fMakeSDigits = sim.fMakeSDigits;
	107	fMakeDigits = sim.fMakeDigits;
	108	fMakeDigitsFromHits = sim.fMakeDigitsFromHits;
	109	fStopOnError = sim.fStopOnError;
	110
	111	fNEvents = sim.fNEvents;
	112	fConfigFileName = sim.fConfigFileName;
	113	fGAliceFileName = sim.fGAliceFileName;
85a5290f	114	fBkgrdFileNames = new TObjArray;
	115	for (Int_t i = 0; i < sim.fBkgrdFileNames->GetEntriesFast(); i++) {
	116	if (!sim.fBkgrdFileNames->At(i)) continue;
	117	fBkgrdFileNames->Add(sim.fBkgrdFileNames->At(i)->Clone());
	118	}
8e4a4643	119
8e4a4643	120	fRunLoader = NULL;
85a5290f	121	}
	122
	123	//_____________________________________________________________________________
	124	AliSimulation& AliSimulation::operator = (const AliSimulation& sim)
	125	{
	126	// assignment operator
	127
	128	this->~AliSimulation();
	129	new(this) AliSimulation(sim);
	130	return *this;
	131	}
	132
	133	//_____________________________________________________________________________
	134	AliSimulation::~AliSimulation()
	135	{
	136	// clean up
	137
8e4a4643	138	fBkgrdFileNames->Delete();
	139	delete fBkgrdFileNames;
	140	}
	141
	142	//_____________________________________________________________________________
	143	void AliSimulation::Init()
	144	{
	145	// set default parameters
	146
	147	fRunGeneration = kTRUE;
	148	fRunSimulation = kTRUE;
	149	fMakeSDigits = "ALL";
	150	fMakeDigits = "ALL";
	151	fMakeDigitsFromHits = "";
	152	fStopOnError = kFALSE;
	153
	154	fNEvents = 1;
	155	fConfigFileName = "Config.C";
	156	fGAliceFileName = "galice.root";
	157	fBkgrdFileNames = new TObjArray;
	158	fRegionOfInterest = kTRUE;
	159
	160	fRunLoader = NULL;
85a5290f	161	}
	162
	163
	164	//_____________________________________________________________________________
	165	void AliSimulation::SetNumberOfEvents(Int_t nEvents)
	166	{
	167	// set the number of events for one run
	168
	169	fNEvents = nEvents;
	170	}
	171
	172	//_____________________________________________________________________________
	173	void AliSimulation::SetConfigFile(const char* fileName)
	174	{
	175	// set the name of the config file
	176
	177	fConfigFileName = fileName;
	178	}
	179
	180	//_____________________________________________________________________________
	181	void AliSimulation::MergeWith(const char* fileName, Int_t nSignalPerBkgrd)
	182	{
	183	// add a file with background events for merging
	184
	185	TObjString* fileNameStr = new TObjString(fileName);
	186	fileNameStr->SetUniqueID(nSignalPerBkgrd);
	187	fBkgrdFileNames->Add(fileNameStr);
	188	}
	189
	190
	191	//_____________________________________________________________________________
	192	Bool_t AliSimulation::Run(Int_t nEvents)
	193	{
	194	// run the generation, simulation and digitization
	195
	196	if (nEvents > 0) fNEvents = nEvents;
	197
	198	// generation and simulation -> hits
	199	if (fRunGeneration) {
8e4a4643	200	if (!gAlice) {
	201	Error("Run", "no gAlice object. Restart aliroot and try again.");
	202	return kFALSE;
	203	}
	204	if (gAlice->Modules()->GetEntries() > 0) {
	205	Error("Run", "gAlice was already run. Restart aliroot and try again.");
	206	return kFALSE;
	207	}
85a5290f	208	if (!RunSimulation()) if (fStopOnError) return kFALSE;
	209	}
	210
8e4a4643	211	// reopen the run loader
	212	if (fRunLoader) delete fRunLoader;
	213	fRunLoader = AliRunLoader::Open(fGAliceFileName.Data(),AliConfig::fgkDefaultEventFolderName,"UPDATE");
	214	if (!fRunLoader) {
	215	Error("Run", "no run loader found in file %s",
	216	fGAliceFileName.Data());
	217	return kFALSE;
	218	}
	219	fRunLoader->LoadgAlice();
	220	gAlice = fRunLoader->GetAliRun();
	221	if (!gAlice) {
	222	Error("Run", "no gAlice object found in file %s",
	223	fGAliceFileName.Data());
	224	return kFALSE;
	225	}
	226
85a5290f	227	// hits -> summable digits
	228	if (!fMakeSDigits.IsNull()) {
	229	if (!RunSDigitization(fMakeSDigits)) if (fStopOnError) return kFALSE;
	230	}
	231
	232	// summable digits -> digits
	233	if (!fMakeDigits.IsNull()) {
	234	if (!RunDigitization(fMakeDigits, fMakeDigitsFromHits)) {
	235	if (fStopOnError) return kFALSE;
	236	}
	237	}
	238
	239	// hits -> digits
	240	if (!fMakeDigitsFromHits.IsNull()) {
8e4a4643	241	if (fBkgrdFileNames->GetEntriesFast() > 0) {
85a5290f	242	Warning("Run", "Merging and direct creation of digits from hits "
	243	"was selected for some detectors. "
	244	"No merging will be done for the following detectors: %s",
	245	fMakeDigitsFromHits.Data());
	246	}
	247	if (!RunHitsDigitization(fMakeDigitsFromHits)) {
	248	if (fStopOnError) return kFALSE;
	249	}
	250	}
	251
	252	return kTRUE;
	253	}
	254
	255	//_____________________________________________________________________________
8e4a4643	256	Bool_t AliSimulation::RunSimulation()
85a5290f	257	{
	258	// run the generation and simulation
	259
4df28b43	260	TStopwatch stopwatch;
	261	stopwatch.Start();
	262
85a5290f	263	Info("RunSimulation", "initializing gAlice with config file %s",
	264	fConfigFileName.Data());
	265	gAlice->Init(fConfigFileName.Data());
8e4a4643	266	fRunLoader = gAlice->GetRunLoader();
8e4a4643	267	if (!fRunLoader) {
85a5290f	268	Error("RunSimulation", "gAlice has no run loader object. "
	269	"Check your config file: %s", fConfigFileName.Data());
	270	return kFALSE;
	271	}
8e4a4643	272	fGAliceFileName = fRunLoader->GetFileName();
85a5290f	273
	274	if (!fRunSimulation) {
	275	if (!gAlice->Generator()) {
	276	Error("RunSimulation", "gAlice has no generator object. "
	277	"Check your config file: %s", fConfigFileName.Data());
	278	return kFALSE;
	279	}
	280	gAlice->Generator()->SetTrackingFlag(0);
	281	}
	282
4df28b43	283	Info("RunSimulation", "running gAlice");
8e4a4643	284	gAlice->Run(fNEvents);
85a5290f	285
4df28b43	286	Info("RunSimulation", "execution time:");
	287	stopwatch.Print();
	288
85a5290f	289	return kTRUE;
	290	}
	291
	292	//_____________________________________________________________________________
8e4a4643	293	Bool_t AliSimulation::RunSDigitization(const TString& detectors)
85a5290f	294	{
	295	// run the digitization and produce summable digits
	296
4df28b43	297	TStopwatch stopwatch;
	298	stopwatch.Start();
	299
85a5290f	300	TString detStr = detectors;
8e4a4643	301	TObjArray* detArray = gAlice->Detectors();
85a5290f	302	for (Int_t iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) {
	303	AliModule* det = (AliModule*) detArray->At(iDet);
	304	if (!det \|\| !det->IsActive()) continue;
	305	if (IsSelected(det->GetName(), detStr)) {
	306	Info("RunSDigitization", "creating summable digits for %s",
	307	det->GetName());
	308	det->Hits2SDigits();
	309	}
	310	}
	311
	312	if ((detStr.CompareTo("ALL") != 0) && !detStr.IsNull()) {
	313	Error("RunSDigitization", "the following detectors were not found: %s",
	314	detStr.Data());
	315	if (fStopOnError) return kFALSE;
	316	}
	317
4df28b43	318	Info("RunSDigitization", "execution time:");
	319	stopwatch.Print();
	320
85a5290f	321	return kTRUE;
	322	}
	323
	324
	325	//_____________________________________________________________________________
8e4a4643	326	Bool_t AliSimulation::RunDigitization(const TString& detectors,
8e4a4643	327	const TString& excludeDetectors)
85a5290f	328	{
	329	// run the digitization and produce digits from sdigits
	330
4df28b43	331	TStopwatch stopwatch;
	332	stopwatch.Start();
	333
8e4a4643	334	Int_t nStreams = fBkgrdFileNames->GetEntriesFast() + 1;
85a5290f	335	Int_t signalPerBkgrd = 1;
8e4a4643	336	if (nStreams > 1) signalPerBkgrd = fBkgrdFileNames->At(0)->GetUniqueID();
85a5290f	337	AliRunDigitizer* manager = new AliRunDigitizer(nStreams, signalPerBkgrd);
	338	manager->SetInputStream(0, fGAliceFileName.Data());
	339	for (Int_t iStream = 1; iStream < nStreams; iStream++) {
	340	const char* fileName = ((TObjString*)
	341	(fBkgrdFileNames->At(iStream-1)))->GetName();
	342	manager->SetInputStream(iStream, fileName);
	343	}
	344
	345	TString detStr = detectors;
	346	TString detExcl = excludeDetectors;
8e4a4643	347	TObjArray* detArray = gAlice->Detectors();
85a5290f	348	for (Int_t iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) {
	349	AliModule* det = (AliModule*) detArray->At(iDet);
	350	if (!det \|\| !det->IsActive()) continue;
	351	if (IsSelected(det->GetName(), detStr) &&
	352	!IsSelected(det->GetName(), detExcl)) {
4df28b43	353	AliDigitizer* digitizer = det->CreateDigitizer(manager);
4df28b43	354	if (!digitizer) {
85a5290f	355	Error("RunDigitization", "no digitizer for %s", det->GetName());
85a5290f	356	if (fStopOnError) return kFALSE;
4df28b43	357	} else {
4df28b43	358	digitizer->SetRegionOfInterest(fRegionOfInterest);
85a5290f	359	}
	360	}
	361	}
	362
	363	if ((detStr.CompareTo("ALL") != 0) && !detStr.IsNull()) {
	364	Error("RunDigitization", "the following detectors were not found: %s",
	365	detStr.Data());
	366	if (fStopOnError) return kFALSE;
	367	}
	368
	369	if (!manager->GetListOfTasks()->IsEmpty()) {
	370	Info("RunDigitization", "executing digitization");
	371	manager->Exec("");
	372	}
	373	delete manager;
	374
4df28b43	375	Info("RunDigitization", "execution time:");
	376	stopwatch.Print();
	377
85a5290f	378	return kTRUE;
	379	}
	380
	381	//_____________________________________________________________________________
8e4a4643	382	Bool_t AliSimulation::RunHitsDigitization(const TString& detectors)
85a5290f	383	{
	384	// run the digitization and produce digits from hits
	385
4df28b43	386	TStopwatch stopwatch;
	387	stopwatch.Start();
	388
85a5290f	389	TString detStr = detectors;
8e4a4643	390	TObjArray* detArray = gAlice->Detectors();
85a5290f	391	for (Int_t iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) {
	392	AliModule* det = (AliModule*) detArray->At(iDet);
	393	if (!det \|\| !det->IsActive()) continue;
	394	if (IsSelected(det->GetName(), detStr)) {
	395	Info("RunHitsDigitization", "creating digits from hits for %s",
	396	det->GetName());
	397	det->Hits2Digits();
	398	}
	399	}
	400
	401	if ((detStr.CompareTo("ALL") != 0) && !detStr.IsNull()) {
	402	Error("RunHitsDigitization", "the following detectors were not found: %s",
	403	detStr.Data());
	404	if (fStopOnError) return kFALSE;
	405	}
	406
4df28b43	407	Info("RunHitsDigitization", "execution time:");
	408	stopwatch.Print();
	409
85a5290f	410	return kTRUE;
	411	}
	412
	413
	414	//_____________________________________________________________________________
	415	Bool_t AliSimulation::IsSelected(TString detName, TString& detectors) const
	416	{
	417	// check whether detName is contained in detectors
	418	// if yes, it is removed from detectors
	419
	420	// check if all detectors are selected
	421	if ((detectors.CompareTo("ALL") == 0) \|\|
	422	detectors.BeginsWith("ALL ") \|\|
	423	detectors.EndsWith(" ALL") \|\|
	424	detectors.Contains(" ALL ")) {
	425	detectors = "ALL";
	426	return kTRUE;
	427	}
	428
	429	// search for the given detector
	430	Bool_t result = kFALSE;
	431	if ((detectors.CompareTo(detName) == 0) \|\|
	432	detectors.BeginsWith(detName+" ") \|\|
	433	detectors.EndsWith(" "+detName) \|\|
	434	detectors.Contains(" "+detName+" ")) {
	435	detectors.ReplaceAll(detName, "");
	436	result = kTRUE;
	437	}
	438
	439	// clean up the detectors string
	440	while (detectors.Contains(" ")) detectors.ReplaceAll(" ", " ");
	441	while (detectors.BeginsWith(" ")) detectors.Remove(0, 1);
	442	while (detectors.EndsWith(" ")) detectors.Remove(detectors.Length()-1, 1);
	443
	444	return result;
	445	}