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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 | /// This is a class for reading raw data files. | |
21 | /// | |
22 | /// The files of one event are expected to be in one directory. The name | |
23 | /// of the directory is "raw" + the event number. Each file contains | |
24 | /// the raw data (with data header) of one DDL. The convention for the | |
25 | /// file names is "DET_#DDL.ddl". "DET" is the name of the detector and | |
26 | /// "#DDL" is the unique equipment ID. | |
27 | /// | |
28 | /// The constructor of AliRawReaderFile takes the event number or the | |
29 | /// directory name as argument. | |
30 | /// | |
31 | /////////////////////////////////////////////////////////////////////////////// | |
32 | ||
33 | #include <cstdlib> | |
34 | #include "AliRawReaderFile.h" | |
35 | #include "AliDAQ.h" | |
36 | #include <TSystem.h> | |
37 | #include <TArrayC.h> | |
38 | ||
39 | ||
40 | ClassImp(AliRawReaderFile) | |
41 | ||
42 | ||
43 | AliRawReaderFile::AliRawReaderFile(Int_t eventNumber) : | |
44 | fEventIndex(eventNumber), | |
45 | fDirName("."), | |
46 | fDirectory(NULL), | |
47 | fStream(NULL), | |
48 | fEquipmentId(-1), | |
49 | fBuffer(NULL), | |
50 | fBufferSize(0), | |
51 | fEquipmentSize(0), | |
52 | fDDLIndex(NULL), | |
53 | fDDLCurrent(-1), | |
54 | fType(7), | |
55 | fRunNb(0), | |
56 | fDetectorPattern(0), | |
57 | fTimestamp(0) | |
58 | { | |
59 | // create an object to read digits from the given event | |
60 | // in the current directory | |
61 | ||
62 | fDirectory = OpenDirectory(); | |
63 | if (!fDirectory) fIsValid = kFALSE; | |
64 | if (!OpenNextFile()) fIsValid = kFALSE; | |
65 | fHeader = new AliRawDataHeader; | |
66 | ||
67 | fId[0] = fId[1] = 0; | |
68 | fTriggerPattern[0] = fTriggerPattern[1] = 0; | |
69 | } | |
70 | ||
71 | AliRawReaderFile::AliRawReaderFile(const char* dirName, Int_t eventNumber) : | |
72 | fEventIndex(eventNumber), | |
73 | fDirName(dirName), | |
74 | fDirectory(NULL), | |
75 | fStream(NULL), | |
76 | fEquipmentId(-1), | |
77 | fBuffer(NULL), | |
78 | fBufferSize(0), | |
79 | fEquipmentSize(0), | |
80 | fDDLIndex(NULL), | |
81 | fDDLCurrent(-1), | |
82 | fType(7), | |
83 | fRunNb(0), | |
84 | fDetectorPattern(0), | |
85 | fTimestamp(0) | |
86 | { | |
87 | // create an object to read digits from the given directory | |
88 | ||
89 | fDirectory = OpenDirectory(); | |
90 | if (!fDirectory) fIsValid = kFALSE; | |
91 | if (fEventIndex >= 0 && (!OpenNextFile())) fIsValid = kFALSE; | |
92 | fHeader = new AliRawDataHeader; | |
93 | ||
94 | fId[0] = fId[1] = 0; | |
95 | fTriggerPattern[0] = fTriggerPattern[1] = 0; | |
96 | } | |
97 | ||
98 | AliRawReaderFile::~AliRawReaderFile() | |
99 | { | |
100 | // close the input file | |
101 | ||
102 | if (fDirectory) gSystem->FreeDirectory(fDirectory); | |
103 | if (fStream) { | |
104 | #if defined(__HP_aCC) || defined(__DECCXX) | |
105 | if (fStream->rdbuf()->is_open()) fStream->close(); | |
106 | #else | |
107 | if (fStream->is_open()) fStream->close(); | |
108 | #endif | |
109 | delete fStream; | |
110 | } | |
111 | if (fHeader) delete fHeader; | |
112 | if (fBuffer) delete[] fBuffer; | |
113 | if (fDDLIndex) delete fDDLIndex; fDDLIndex=NULL; | |
114 | } | |
115 | ||
116 | void AliRawReaderFile::RequireHeader(Bool_t required) | |
117 | { | |
118 | // Reading of raw data in case of missing | |
119 | // raw data header is not implemented for | |
120 | // this class | |
121 | if (!required) { | |
122 | Warning("AliRawReaderFile","Reading of raw data without raw data header!"); | |
123 | if (fHeader) delete fHeader; | |
124 | fHeader = NULL; | |
125 | } | |
126 | else { | |
127 | if (!fHeader) fHeader = new AliRawDataHeader; | |
128 | } | |
129 | ||
130 | AliRawReader::RequireHeader(required); | |
131 | } | |
132 | ||
133 | TString AliRawReaderFile::GetDirName() const | |
134 | { | |
135 | // return the current directory name | |
136 | ||
137 | TString dirName(fDirName); | |
138 | if (fEventIndex >= 0) { | |
139 | dirName += "/raw"; | |
140 | dirName += fEventIndex; | |
141 | } | |
142 | return dirName; | |
143 | } | |
144 | ||
145 | void* AliRawReaderFile::OpenDirectory() | |
146 | { | |
147 | // open and return the directory | |
148 | ||
149 | TString dirName = GetDirName(); | |
150 | void* directory = gSystem->OpenDirectory(dirName); | |
151 | if (!directory) { | |
152 | Error("OpenDirectory", "could not open directory %s", dirName.Data()); | |
153 | } | |
154 | return directory; | |
155 | } | |
156 | ||
157 | Bool_t AliRawReaderFile::CreateFileIndex() | |
158 | { | |
159 | // scan the files of the directory and create index of all DDL files | |
160 | // returns kFALSE if no DDL files available | |
161 | Bool_t result=kFALSE; | |
162 | fDDLCurrent=-1; | |
163 | if (fDDLIndex) return fDDLIndex->GetSize()>0; | |
164 | if (!fDirectory) return kFALSE; | |
165 | fDDLIndex=new TArrayC(0); | |
166 | if (!fDDLIndex) return kFALSE; | |
167 | TString entry; | |
168 | while (entry = gSystem->GetDirEntry(fDirectory)) { | |
169 | const char* filename=entry.Data(); | |
170 | if (!filename || entry.IsNull()) break; | |
171 | if (entry.BeginsWith("run")) { | |
172 | entry.ReplaceAll("run",""); | |
173 | fRunNb = entry.Atoi(); | |
174 | continue; | |
175 | } | |
176 | if (!entry.EndsWith(".ddl")) continue; | |
177 | result=kTRUE; | |
178 | entry.Remove(0, entry.Last('_')+1); | |
179 | entry.Remove(entry.Length()-4); | |
180 | Int_t equipmentId = atoi(entry.Data()); | |
181 | Int_t ddlIndex = -1; | |
182 | fDetectorPattern |= (1 << AliDAQ::DetectorIDFromDdlID(equipmentId,ddlIndex)); | |
183 | if (fDDLIndex->GetSize()<=equipmentId) { | |
184 | fDDLIndex->Set(equipmentId+1); | |
185 | } | |
186 | char* array=(char*)fDDLIndex->GetArray(); | |
187 | array[equipmentId]=1; | |
188 | } | |
189 | ||
190 | return result; | |
191 | } | |
192 | ||
193 | Bool_t AliRawReaderFile::OpenNextFile() | |
194 | { | |
195 | // open the next file | |
196 | // returns kFALSE if the current file is the last one | |
197 | ||
198 | if (!fDDLIndex && !CreateFileIndex()) return kFALSE; | |
199 | if (fSelectMinEquipmentId>=0 && fSelectMinEquipmentId>fEquipmentId) | |
200 | fDDLCurrent=fSelectMinEquipmentId-1; | |
201 | ||
202 | if (fStream) { | |
203 | #if defined(__HP_aCC) || defined(__DECCXX) | |
204 | if (fStream->rdbuf()->is_open()) fStream->close(); | |
205 | #else | |
206 | if (fStream->is_open()) fStream->close(); | |
207 | #endif | |
208 | delete fStream; | |
209 | fStream = NULL; | |
210 | fEquipmentId = -1; | |
211 | fEquipmentSize = 0; | |
212 | } | |
213 | ||
214 | if (!fDirectory) return kFALSE; | |
215 | while (++fDDLCurrent<(fDDLIndex->GetSize()) && | |
216 | (fDDLCurrent<=fSelectMaxEquipmentId || fSelectMaxEquipmentId<0)) { | |
217 | if (fDDLIndex->At(fDDLCurrent)==0) continue; | |
218 | Int_t dummy=0; | |
219 | TString entry; | |
220 | entry.Form("%s_%d.ddl", AliDAQ::DetectorNameFromDdlID(fDDLCurrent, dummy), fDDLCurrent); | |
221 | char* fileName = gSystem->ConcatFileName(GetDirName(), entry); | |
222 | if (!fileName) continue; | |
223 | // read the timestamp | |
224 | FileStat_t buf; | |
225 | if (gSystem->GetPathInfo(fileName,buf) == 0) { | |
226 | fTimestamp = buf.fMtime; | |
227 | } | |
228 | #ifndef __DECCXX | |
229 | fStream = new fstream(fileName, ios::binary|ios::in); | |
230 | #else | |
231 | fStream = new fstream(fileName, ios::in); | |
232 | #endif | |
233 | delete [] fileName; | |
234 | break; | |
235 | } | |
236 | ||
237 | if (!fStream) return kFALSE; | |
238 | fEquipmentId = fDDLCurrent; | |
239 | #if defined(__HP_aCC) || defined(__DECCXX) | |
240 | return (fStream->rdbuf()->is_open()); | |
241 | #else | |
242 | return (fStream->is_open()); | |
243 | #endif | |
244 | } | |
245 | ||
246 | ||
247 | Bool_t AliRawReaderFile::ReadHeader() | |
248 | { | |
249 | // read a data header at the current stream position | |
250 | // returns kFALSE if the mini header could not be read | |
251 | ||
252 | if (!fStream && !OpenNextFile()) return kFALSE; | |
253 | do { | |
254 | if (fCount > 0) fStream->seekg(Int_t(fStream->tellg()) + fCount); | |
255 | if (fHeader) { | |
256 | while (!fStream->read((char*) fHeader, sizeof(AliRawDataHeader))) { | |
257 | if (!OpenNextFile()) return kFALSE; | |
258 | } | |
259 | } | |
260 | else { | |
261 | if (fStream->eof()) | |
262 | if (!OpenNextFile()) return kFALSE; | |
263 | } | |
264 | if (fHeader && fHeader->fSize != 0xFFFFFFFF) { | |
265 | fCount = fHeader->fSize - sizeof(AliRawDataHeader); | |
266 | } else { | |
267 | UInt_t currentPos = fStream->tellg(); | |
268 | fStream->seekg(0, ios::end); | |
269 | fCount = UInt_t(fStream->tellg()) - currentPos; | |
270 | fStream->seekg(currentPos); | |
271 | } | |
272 | fEquipmentSize = fCount; | |
273 | if (fHeader) fEquipmentSize += sizeof(AliRawDataHeader); | |
274 | } while (!IsSelected()); | |
275 | return kTRUE; | |
276 | } | |
277 | ||
278 | Bool_t AliRawReaderFile::ReadNextData(UChar_t*& data) | |
279 | { | |
280 | // reads the next payload at the current stream position | |
281 | // returns kFALSE if the data could not be read | |
282 | ||
283 | while (fCount == 0) { | |
284 | if (!ReadHeader()) return kFALSE; | |
285 | } | |
286 | if (fBufferSize < fCount) { | |
287 | if (fBuffer) delete[] fBuffer; | |
288 | fBufferSize = Int_t(fCount*1.2); | |
289 | fBuffer = new UChar_t[fBufferSize]; | |
290 | } | |
291 | if (!fStream->read((char*) fBuffer, fCount)) { | |
292 | Error("ReadNext", "could not read data!"); | |
293 | return kFALSE; | |
294 | } | |
295 | fCount = 0; | |
296 | ||
297 | data = fBuffer; | |
298 | return kTRUE; | |
299 | } | |
300 | ||
301 | Bool_t AliRawReaderFile::ReadNext(UChar_t* data, Int_t size) | |
302 | { | |
303 | // reads the next block of data at the current stream position | |
304 | // returns kFALSE if the data could not be read | |
305 | ||
306 | if (!fStream->read((char*) data, size)) { | |
307 | Error("ReadNext", "could not read data!"); | |
308 | return kFALSE; | |
309 | } | |
310 | fCount -= size; | |
311 | return kTRUE; | |
312 | } | |
313 | ||
314 | ||
315 | Bool_t AliRawReaderFile::Reset() | |
316 | { | |
317 | // reset the current stream position to the first DDL file of the curevent | |
318 | ||
319 | void* directory = OpenDirectory(); | |
320 | if (!directory) return kFALSE; | |
321 | ||
322 | if (fStream) { | |
323 | #if defined(__HP_aCC) || defined(__DECCXX) | |
324 | if (fStream->rdbuf()->is_open()) fStream->close(); | |
325 | #else | |
326 | if (fStream->is_open()) fStream->close(); | |
327 | #endif | |
328 | delete fStream; | |
329 | fStream = NULL; | |
330 | } | |
331 | ||
332 | if (fDirectory) gSystem->FreeDirectory(fDirectory); | |
333 | fDirectory = directory; | |
334 | ||
335 | // Matthias 05.06.2008 | |
336 | // do not open the next file. That might collide with a subsequent | |
337 | // SelectEquipment call as the 'file pointer' is already set. | |
338 | // This is important for the indexing of the DDL files. | |
339 | // --------------------------------------------------------- | |
340 | // All ReadNext functions first require the fCount member to be | |
341 | // non zero or call ReadHeader. That allows to postpone the call | |
342 | // to OpenNextFile to the next invocation of ReadHeader. | |
343 | // ReadHeader has been mofified according to that. | |
344 | /* | |
345 | OpenNextFile(); | |
346 | */ | |
347 | fEquipmentId=-1; | |
348 | fDDLCurrent=-1; | |
349 | fCount = 0; | |
350 | return kTRUE; | |
351 | } | |
352 | ||
353 | Bool_t AliRawReaderFile::NextEvent() | |
354 | { | |
355 | // go to the next event directory | |
356 | ||
357 | if (fDDLIndex) delete fDDLIndex; | |
358 | fDDLIndex=NULL; | |
359 | fDetectorPattern = 0; | |
360 | if (fEventIndex < -1) return kFALSE; | |
361 | ||
362 | do { | |
363 | TString dirName = fDirName + "/raw"; | |
364 | dirName += (fEventIndex + 1); | |
365 | void* directory = gSystem->OpenDirectory(dirName); | |
366 | if (!directory) return kFALSE; | |
367 | gSystem->FreeDirectory(directory); | |
368 | ||
369 | fEventIndex++; | |
370 | Reset(); | |
371 | } while (!IsEventSelected()); | |
372 | ||
373 | // Read the header of the first payload | |
374 | // in order to fill the 'fake' event header | |
375 | if (ReadHeader() && fHeader) { | |
376 | fId[0] = ((fHeader->GetEventID2() >> 20) & 0xf); | |
377 | fId[1] = (fHeader->GetEventID1() & 0xfff) | ((fHeader->GetEventID2() & 0xfffff) << 12); | |
378 | fTriggerPattern[0] = (fHeader->GetTriggerClasses() & 0xffffffff); | |
379 | fTriggerPattern[1] = ((fHeader->GetTriggerClasses() >> 32) & 0x3ffff); | |
380 | } | |
381 | else { | |
382 | Warning("AliRawReaderFile","Can not read CDH header! The event header fields will be empty!"); | |
383 | } | |
384 | Reset(); | |
385 | ||
386 | fEventNumber++; | |
387 | ||
388 | return kTRUE; | |
389 | } | |
390 | ||
391 | Bool_t AliRawReaderFile::RewindEvents() | |
392 | { | |
393 | // reset the event counter | |
394 | ||
395 | if (fEventIndex >= 0) fEventIndex = -1; | |
396 | fEventNumber = -1; | |
397 | return Reset(); | |
398 | } |