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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 | // // | |
33 | // The name of the configuration file can be specified by // | |
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" | |
82 | #include <TObjString.h> | |
83 | ||
84 | ||
85 | ClassImp(AliSimulation) | |
86 | ||
87 | ||
88 | //_____________________________________________________________________________ | |
89 | AliSimulation::AliSimulation(const char* name, const char* title) : | |
90 | TNamed(name, title) | |
91 | { | |
92 | // create simulation object with default parameters | |
93 | ||
94 | Init(); | |
95 | } | |
96 | ||
97 | //_____________________________________________________________________________ | |
98 | AliSimulation::AliSimulation(const AliSimulation& sim) : | |
99 | TNamed(sim) | |
100 | { | |
101 | // copy constructor | |
102 | ||
103 | fRunGeneration = sim.fRunGeneration; | |
104 | fRunSimulation = sim.fRunSimulation; | |
105 | fMakeSDigits = sim.fMakeSDigits; | |
106 | fMakeDigits = sim.fMakeDigits; | |
107 | fMakeDigitsFromHits = sim.fMakeDigitsFromHits; | |
108 | fStopOnError = sim.fStopOnError; | |
109 | ||
110 | fNEvents = sim.fNEvents; | |
111 | fConfigFileName = sim.fConfigFileName; | |
112 | fGAliceFileName = sim.fGAliceFileName; | |
113 | fBkgrdFileNames = new TObjArray; | |
114 | for (Int_t i = 0; i < sim.fBkgrdFileNames->GetEntriesFast(); i++) { | |
115 | if (!sim.fBkgrdFileNames->At(i)) continue; | |
116 | fBkgrdFileNames->Add(sim.fBkgrdFileNames->At(i)->Clone()); | |
117 | } | |
118 | ||
119 | fRunLoader = NULL; | |
120 | } | |
121 | ||
122 | //_____________________________________________________________________________ | |
123 | AliSimulation& AliSimulation::operator = (const AliSimulation& sim) | |
124 | { | |
125 | // assignment operator | |
126 | ||
127 | this->~AliSimulation(); | |
128 | new(this) AliSimulation(sim); | |
129 | return *this; | |
130 | } | |
131 | ||
132 | //_____________________________________________________________________________ | |
133 | AliSimulation::~AliSimulation() | |
134 | { | |
135 | // clean up | |
136 | ||
137 | fBkgrdFileNames->Delete(); | |
138 | delete fBkgrdFileNames; | |
139 | } | |
140 | ||
141 | //_____________________________________________________________________________ | |
142 | void AliSimulation::Init() | |
143 | { | |
144 | // set default parameters | |
145 | ||
146 | fRunGeneration = kTRUE; | |
147 | fRunSimulation = kTRUE; | |
148 | fMakeSDigits = "ALL"; | |
149 | fMakeDigits = "ALL"; | |
150 | fMakeDigitsFromHits = ""; | |
151 | fStopOnError = kFALSE; | |
152 | ||
153 | fNEvents = 1; | |
154 | fConfigFileName = "Config.C"; | |
155 | fGAliceFileName = "galice.root"; | |
156 | fBkgrdFileNames = new TObjArray; | |
157 | ||
158 | fRunLoader = NULL; | |
159 | } | |
160 | ||
161 | ||
162 | //_____________________________________________________________________________ | |
163 | void AliSimulation::SetNumberOfEvents(Int_t nEvents) | |
164 | { | |
165 | // set the number of events for one run | |
166 | ||
167 | fNEvents = nEvents; | |
168 | } | |
169 | ||
170 | //_____________________________________________________________________________ | |
171 | void AliSimulation::SetConfigFile(const char* fileName) | |
172 | { | |
173 | // set the name of the config file | |
174 | ||
175 | fConfigFileName = fileName; | |
176 | } | |
177 | ||
178 | //_____________________________________________________________________________ | |
179 | void AliSimulation::MergeWith(const char* fileName, Int_t nSignalPerBkgrd) | |
180 | { | |
181 | // add a file with background events for merging | |
182 | ||
183 | TObjString* fileNameStr = new TObjString(fileName); | |
184 | fileNameStr->SetUniqueID(nSignalPerBkgrd); | |
185 | fBkgrdFileNames->Add(fileNameStr); | |
186 | } | |
187 | ||
188 | ||
189 | //_____________________________________________________________________________ | |
190 | Bool_t AliSimulation::Run(Int_t nEvents) | |
191 | { | |
192 | // run the generation, simulation and digitization | |
193 | ||
194 | if (nEvents > 0) fNEvents = nEvents; | |
195 | ||
196 | // generation and simulation -> hits | |
197 | if (fRunGeneration) { | |
198 | if (!gAlice) { | |
199 | Error("Run", "no gAlice object. Restart aliroot and try again."); | |
200 | return kFALSE; | |
201 | } | |
202 | if (gAlice->Modules()->GetEntries() > 0) { | |
203 | Error("Run", "gAlice was already run. Restart aliroot and try again."); | |
204 | return kFALSE; | |
205 | } | |
206 | if (!RunSimulation()) if (fStopOnError) return kFALSE; | |
207 | } | |
208 | ||
209 | // reopen the run loader | |
210 | if (fRunLoader) delete fRunLoader; | |
c2b54ae3 | 211 | fRunLoader = AliRunLoader::Open(fGAliceFileName.Data(),AliConfig::fgkDefaultEventFolderName,"UPDATE"); |
85a5290f | 212 | if (!fRunLoader) { |
213 | Error("Run", "no run loader found in file %s", | |
214 | fGAliceFileName.Data()); | |
215 | return kFALSE; | |
216 | } | |
217 | fRunLoader->LoadgAlice(); | |
218 | gAlice = fRunLoader->GetAliRun(); | |
219 | if (!gAlice) { | |
220 | Error("GetLoadersAndDetectors", "no gAlice object found in file %s", | |
221 | fGAliceFileName.Data()); | |
222 | return kFALSE; | |
223 | } | |
224 | ||
225 | // hits -> summable digits | |
226 | if (!fMakeSDigits.IsNull()) { | |
227 | if (!RunSDigitization(fMakeSDigits)) if (fStopOnError) return kFALSE; | |
228 | } | |
229 | ||
230 | // summable digits -> digits | |
231 | if (!fMakeDigits.IsNull()) { | |
232 | if (!RunDigitization(fMakeDigits, fMakeDigitsFromHits)) { | |
233 | if (fStopOnError) return kFALSE; | |
234 | } | |
235 | } | |
236 | ||
237 | // hits -> digits | |
238 | if (!fMakeDigitsFromHits.IsNull()) { | |
239 | if (fBkgrdFileNames->GetEntriesFast() > 0) { | |
240 | Warning("Run", "Merging and direct creation of digits from hits " | |
241 | "was selected for some detectors. " | |
242 | "No merging will be done for the following detectors: %s", | |
243 | fMakeDigitsFromHits.Data()); | |
244 | } | |
245 | if (!RunHitsDigitization(fMakeDigitsFromHits)) { | |
246 | if (fStopOnError) return kFALSE; | |
247 | } | |
248 | } | |
249 | ||
250 | return kTRUE; | |
251 | } | |
252 | ||
253 | //_____________________________________________________________________________ | |
254 | Bool_t AliSimulation::RunSimulation() | |
255 | { | |
256 | // run the generation and simulation | |
257 | ||
258 | Info("RunSimulation", "initializing gAlice with config file %s", | |
259 | fConfigFileName.Data()); | |
260 | gAlice->Init(fConfigFileName.Data()); | |
261 | fRunLoader = gAlice->GetRunLoader(); | |
262 | if (!fRunLoader) { | |
263 | Error("RunSimulation", "gAlice has no run loader object. " | |
264 | "Check your config file: %s", fConfigFileName.Data()); | |
265 | return kFALSE; | |
266 | } | |
267 | fGAliceFileName = fRunLoader->GetFileName(); | |
268 | ||
269 | if (!fRunSimulation) { | |
270 | if (!gAlice->Generator()) { | |
271 | Error("RunSimulation", "gAlice has no generator object. " | |
272 | "Check your config file: %s", fConfigFileName.Data()); | |
273 | return kFALSE; | |
274 | } | |
275 | gAlice->Generator()->SetTrackingFlag(0); | |
276 | } | |
277 | ||
278 | Info("Run", "running gAlice"); | |
279 | gAlice->Run(fNEvents); | |
280 | ||
281 | return kTRUE; | |
282 | } | |
283 | ||
284 | //_____________________________________________________________________________ | |
285 | Bool_t AliSimulation::RunSDigitization(const TString& detectors) | |
286 | { | |
287 | // run the digitization and produce summable digits | |
288 | ||
289 | TString detStr = detectors; | |
290 | TObjArray* detArray = gAlice->Detectors(); | |
291 | for (Int_t iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) { | |
292 | AliModule* det = (AliModule*) detArray->At(iDet); | |
293 | if (!det || !det->IsActive()) continue; | |
294 | if (IsSelected(det->GetName(), detStr)) { | |
295 | Info("RunSDigitization", "creating summable digits for %s", | |
296 | det->GetName()); | |
297 | det->Hits2SDigits(); | |
298 | } | |
299 | } | |
300 | ||
301 | if ((detStr.CompareTo("ALL") != 0) && !detStr.IsNull()) { | |
302 | Error("RunSDigitization", "the following detectors were not found: %s", | |
303 | detStr.Data()); | |
304 | if (fStopOnError) return kFALSE; | |
305 | } | |
306 | ||
307 | return kTRUE; | |
308 | } | |
309 | ||
310 | ||
311 | //_____________________________________________________________________________ | |
312 | Bool_t AliSimulation::RunDigitization(const TString& detectors, | |
313 | const TString& excludeDetectors) | |
314 | { | |
315 | // run the digitization and produce digits from sdigits | |
316 | ||
317 | Int_t nStreams = fBkgrdFileNames->GetEntriesFast() + 1; | |
318 | Int_t signalPerBkgrd = 1; | |
319 | if (nStreams > 1) signalPerBkgrd = fBkgrdFileNames->At(0)->GetUniqueID(); | |
320 | AliRunDigitizer* manager = new AliRunDigitizer(nStreams, signalPerBkgrd); | |
321 | manager->SetInputStream(0, fGAliceFileName.Data()); | |
322 | for (Int_t iStream = 1; iStream < nStreams; iStream++) { | |
323 | const char* fileName = ((TObjString*) | |
324 | (fBkgrdFileNames->At(iStream-1)))->GetName(); | |
325 | manager->SetInputStream(iStream, fileName); | |
326 | } | |
327 | ||
328 | TString detStr = detectors; | |
329 | TString detExcl = excludeDetectors; | |
330 | TObjArray* detArray = gAlice->Detectors(); | |
331 | for (Int_t iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) { | |
332 | AliModule* det = (AliModule*) detArray->At(iDet); | |
333 | if (!det || !det->IsActive()) continue; | |
334 | if (IsSelected(det->GetName(), detStr) && | |
335 | !IsSelected(det->GetName(), detExcl)) { | |
336 | if (!det->CreateDigitizer(manager)) { | |
337 | Error("RunDigitization", "no digitizer for %s", det->GetName()); | |
338 | if (fStopOnError) return kFALSE; | |
339 | } | |
340 | } | |
341 | } | |
342 | ||
343 | if ((detStr.CompareTo("ALL") != 0) && !detStr.IsNull()) { | |
344 | Error("RunDigitization", "the following detectors were not found: %s", | |
345 | detStr.Data()); | |
346 | if (fStopOnError) return kFALSE; | |
347 | } | |
348 | ||
349 | if (!manager->GetListOfTasks()->IsEmpty()) { | |
350 | Info("RunDigitization", "executing digitization"); | |
351 | manager->Exec(""); | |
352 | } | |
353 | delete manager; | |
354 | ||
355 | return kTRUE; | |
356 | } | |
357 | ||
358 | //_____________________________________________________________________________ | |
359 | Bool_t AliSimulation::RunHitsDigitization(const TString& detectors) | |
360 | { | |
361 | // run the digitization and produce digits from hits | |
362 | ||
363 | TString detStr = detectors; | |
364 | TObjArray* detArray = gAlice->Detectors(); | |
365 | for (Int_t iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) { | |
366 | AliModule* det = (AliModule*) detArray->At(iDet); | |
367 | if (!det || !det->IsActive()) continue; | |
368 | if (IsSelected(det->GetName(), detStr)) { | |
369 | Info("RunHitsDigitization", "creating digits from hits for %s", | |
370 | det->GetName()); | |
371 | det->Hits2Digits(); | |
372 | } | |
373 | } | |
374 | ||
375 | if ((detStr.CompareTo("ALL") != 0) && !detStr.IsNull()) { | |
376 | Error("RunHitsDigitization", "the following detectors were not found: %s", | |
377 | detStr.Data()); | |
378 | if (fStopOnError) return kFALSE; | |
379 | } | |
380 | ||
381 | return kTRUE; | |
382 | } | |
383 | ||
384 | ||
385 | //_____________________________________________________________________________ | |
386 | Bool_t AliSimulation::IsSelected(TString detName, TString& detectors) const | |
387 | { | |
388 | // check whether detName is contained in detectors | |
389 | // if yes, it is removed from detectors | |
390 | ||
391 | // check if all detectors are selected | |
392 | if ((detectors.CompareTo("ALL") == 0) || | |
393 | detectors.BeginsWith("ALL ") || | |
394 | detectors.EndsWith(" ALL") || | |
395 | detectors.Contains(" ALL ")) { | |
396 | detectors = "ALL"; | |
397 | return kTRUE; | |
398 | } | |
399 | ||
400 | // search for the given detector | |
401 | Bool_t result = kFALSE; | |
402 | if ((detectors.CompareTo(detName) == 0) || | |
403 | detectors.BeginsWith(detName+" ") || | |
404 | detectors.EndsWith(" "+detName) || | |
405 | detectors.Contains(" "+detName+" ")) { | |
406 | detectors.ReplaceAll(detName, ""); | |
407 | result = kTRUE; | |
408 | } | |
409 | ||
410 | // clean up the detectors string | |
411 | while (detectors.Contains(" ")) detectors.ReplaceAll(" ", " "); | |
412 | while (detectors.BeginsWith(" ")) detectors.Remove(0, 1); | |
413 | while (detectors.EndsWith(" ")) detectors.Remove(detectors.Length()-1, 1); | |
414 | ||
415 | return result; | |
416 | } |