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1 | #include <iostream> | |
2 | ||
3 | #include "TObjArray.h" | |
4 | #include "TTimer.h" | |
5 | #include "TThread.h" | |
6 | #include "AliEveEventBuffer.h" | |
7 | ||
8 | ||
9 | //Not needed, only for debug | |
10 | #include "AliESDEvent.h" | |
11 | ||
12 | using namespace std; | |
13 | ||
14 | ClassImp(AliEveEventBuffer) | |
15 | ||
16 | ///_______________________________________________________________________ | |
17 | AliEveEventBuffer::AliEveEventBuffer() : | |
18 | fBufferSize(10), | |
19 | fPreBuffer(4), | |
20 | fBusy(kFALSE), | |
21 | fEventBuffer(NULL), | |
22 | fCurrentEvent(NULL), | |
23 | fBIndex(), | |
24 | fTimer(NULL), | |
25 | fEventId(), | |
26 | fBufferMonStarted(kFALSE) | |
27 | { | |
28 | // see header file for class documentation | |
29 | fEventBuffer = new TObjArray(fBufferSize, 0); | |
30 | fEventBuffer->SetOwner(kFALSE); | |
31 | ||
32 | for(int id = 0; id < kSize; id++) { | |
33 | fBIndex[id] = -1; | |
34 | } | |
35 | ||
36 | fTimer = new TTimer(); | |
37 | fTimer->Connect("Timeout()", "AliEveEventBuffer", this, "CreateBufferThread()"); | |
38 | ||
39 | fEventId = new ULong64_t[fBufferSize]; | |
40 | for(Int_t id = 0; id < fBufferSize; id++ ) { | |
41 | fEventId[id] = -2; | |
42 | } | |
43 | ||
44 | ||
45 | } | |
46 | ||
47 | ||
48 | ||
49 | ///_______________________________________________________________________ | |
50 | AliEveEventBuffer::~AliEveEventBuffer() { | |
51 | // see header file for class documentation | |
52 | ||
53 | if ( fEventBuffer ) { | |
54 | fEventBuffer->Clear(); | |
55 | delete fEventBuffer; | |
56 | } | |
57 | fEventBuffer = NULL; | |
58 | ||
59 | if(fCurrentEvent) | |
60 | delete fCurrentEvent; | |
61 | fCurrentEvent = NULL; | |
62 | ||
63 | } | |
64 | ||
65 | void AliEveEventBuffer::CreateBufferThread() { | |
66 | // cout << "hereherehere"<<endl; | |
67 | TThread * fThread = new TThread(AliEveEventBuffer::BufferThread, (void*) this); | |
68 | fThread->Run(); | |
69 | ||
70 | } | |
71 | ||
72 | ///___________________________________________________________________________ | |
73 | void * AliEveEventBuffer::BufferThread(void * buffer) { | |
74 | cout <<"BufferThread : " <<endl; | |
75 | if(buffer) { | |
76 | if (!reinterpret_cast<AliEveEventBuffer*>(buffer)->GetBusy()) { | |
77 | reinterpret_cast<AliEveEventBuffer*>(buffer)->MonitorBuffer(); | |
78 | } else { | |
79 | cout << "busy"<<endl; | |
80 | } | |
81 | ||
82 | } else { | |
83 | cout << "no buffer"<<endl; | |
84 | } | |
85 | return (void*)0; | |
86 | } | |
87 | ||
88 | ///_____________________________________________________________________________ | |
89 | void AliEveEventBuffer::MonitorBuffer() { | |
90 | cout << "Monitorbuffer: " << endl; | |
91 | if ( (CalculateDifference(fBIndex[kTop],fBIndex[kLast]) < fPreBuffer) ) { | |
92 | if(GetBusy()) { | |
93 | cout << "Already called FetchEvent()" << endl; | |
94 | return; | |
95 | } else { | |
96 | fBusy = kTRUE; | |
97 | FetchEvent(); | |
98 | fBusy = kFALSE; | |
99 | } | |
100 | } else { | |
101 | //StopBufferMonitor(); | |
102 | ||
103 | fBusy = kFALSE; | |
104 | } | |
105 | } | |
106 | ||
107 | ||
108 | ///_______________________________________________________________________________ | |
109 | TObject * AliEveEventBuffer::NextEvent() { | |
110 | //See header file for documentation | |
111 | cout << "In enxtevent"<<endl; | |
112 | ||
113 | ||
114 | // if(fBusy) { | |
115 | // cout << "Event Buffer busy"<<endl; | |
116 | // return NULL; | |
117 | // } | |
118 | // else SetBusy(kTRUE); | |
119 | TObject * nextEvent = GetNextUnSeen(); | |
120 | //SetBusy(kFALSE); | |
121 | return nextEvent; | |
122 | } | |
123 | ||
124 | ///______________________________________________________________________________ | |
125 | TObject * AliEveEventBuffer::Back() { | |
126 | cout << "go back"<<endl; | |
127 | PrintIndeces(); | |
128 | Int_t prevId = CalculatePrevious(fBIndex[kCurrent]); | |
129 | if(prevId == fBIndex[kTop]) { | |
130 | cout << "returning NULL" << endl; | |
131 | return NULL; | |
132 | } else { | |
133 | fBIndex[kCurrent] = prevId; | |
134 | PrintIndeces(); | |
135 | cout <<"returning: "<< fBIndex[kCurrent] << " " << fEventBuffer->At(fBIndex[kCurrent]); | |
136 | return fEventBuffer->At(fBIndex[kCurrent]); | |
137 | } | |
138 | } | |
139 | ||
140 | ||
141 | ||
142 | ///______________________________________________________________________________ | |
143 | TObject * AliEveEventBuffer::Fwd() { | |
144 | PrintIndeces(); | |
145 | if (fBIndex[kCurrent] == fBIndex[kLast]) { | |
146 | cout<< "returning NULL"<<endl; | |
147 | return NULL; | |
148 | } | |
149 | ||
150 | fBIndex[kCurrent] = CalculateNext(fBIndex[kCurrent]); | |
151 | TObject * event = fEventBuffer->At(fBIndex[kCurrent]); | |
152 | return event; | |
153 | } | |
154 | ||
155 | ||
156 | ||
157 | ///________________________________________________________________________________ | |
158 | TObject * AliEveEventBuffer::GetNextUnSeen() { | |
159 | //See header file for documentation | |
160 | cout << "GetNextUnSeen"<<endl; | |
161 | PrintIndeces(); | |
162 | if(CalculateDifference(fBIndex[kTop], fBIndex[kLast])) { | |
163 | fBIndex[kLast] = CalculateNext(fBIndex[kLast]); | |
164 | fBIndex[kCurrent] = fBIndex[kLast]; | |
165 | PrintIndeces(); | |
166 | return fEventBuffer->At(fBIndex[kCurrent]); | |
167 | } else { | |
168 | cout << "No new event available, only events in buffer available!"<<endl; | |
169 | return NULL; | |
170 | } | |
171 | } | |
172 | ///_________________________________________________________________________________ | |
173 | void AliEveEventBuffer::PrintIndeces() { | |
174 | for(Int_t i = 0; i < kSize; i++) { | |
175 | cout << i << ": " << fBIndex[i] << endl; | |
176 | } | |
177 | } | |
178 | ///_________________________________________________________________________________ | |
179 | void AliEveEventBuffer::PrintBuffer() { | |
180 | for(Int_t i = 0; i < 10; i++) { | |
181 | AliESDEvent * event = dynamic_cast<AliESDEvent*>(fEventBuffer->At(i)); | |
182 | if(event) { | |
183 | cout << i << ": " <<event << " " << event->GetEventNumberInFile() << endl;; | |
184 | } | |
185 | } | |
186 | } | |
187 | ||
188 | ///____________________________________________________________________________________ | |
189 | void AliEveEventBuffer::FetchEvent() { | |
190 | cout << "FetchEvent " << endl; | |
191 | TObject * event = GetEventFromSource(); | |
192 | ULong64_t eventId = GetEventIdFromSource(); | |
193 | if(event) { | |
194 | AddToBuffer(event); | |
195 | fEventId[fBIndex[kTop]] = eventId; | |
196 | } | |
197 | ||
198 | PrintIndeces(); | |
199 | cout << "FetchedEvent " << endl; | |
200 | ||
201 | } | |
202 | ||
203 | ///_________________________________________________________________________________ | |
204 | void AliEveEventBuffer::AddToBuffer(TObject * event) { | |
205 | cout << "Add to buffer"<<endl; | |
206 | if(!event) return; | |
207 | ||
208 | fBIndex[kTop] = CalculateNext(fBIndex[kTop]); | |
209 | //Delete the event already there (ok to delete as object, not aliesdevent, TList?) | |
210 | //TObject * object = fEventBuffer->At(fBIndex[kTop]); | |
211 | fEventBuffer->RemoveAt(fBIndex[kTop]); | |
212 | //if (object) delete object; | |
213 | fEventBuffer->AddAt(event, fBIndex[kTop]); | |
214 | ||
215 | } | |
216 | ||
217 | ///_____________________________________________________________________________________ | |
218 | Int_t AliEveEventBuffer::CalculateNext(Int_t current) { | |
219 | //See header file for documentation | |
220 | current++; | |
221 | if(current == fBufferSize) current = 0; | |
222 | return current; | |
223 | } | |
224 | ||
225 | ||
226 | ///_____________________________________________________________________________________ | |
227 | Int_t AliEveEventBuffer::CalculatePrevious(Int_t current) { | |
228 | //See header file for documentation | |
229 | cout << "CalculatePrev: " << current; | |
230 | current--; | |
231 | if(current == -1) current += fBufferSize; | |
232 | cout << "... " << current << endl; | |
233 | return current; | |
234 | } | |
235 | ||
236 | ///__________________________________________________________________________________ | |
237 | Int_t AliEveEventBuffer::CalculateDifference(Int_t top, Int_t low) { | |
238 | //See header file for documentation | |
239 | if (top > low) { | |
240 | // cout << "top > low"<<endl; | |
241 | return (top - low); | |
242 | } else if (top < low) { | |
243 | // cout << "low < top"<<endl; | |
244 | return (fBufferSize - low + top); | |
245 | } else { | |
246 | //cout << "calculated to 0"<<endl; | |
247 | return 0; | |
248 | } | |
249 | } | |
250 | ||
251 | ///___________________________________________________________________________________ | |
252 | void AliEveEventBuffer::StartBufferMonitor() { | |
253 | //cout << "NOT !!! starting buffer mon"<<endl; | |
254 | cout << "starting buffer mon"<<endl; | |
255 | CreateBufferThread(); | |
256 | SetBufferMonStarted(kTRUE); | |
257 | fTimer->Start(3000); | |
258 | } | |
259 | ///___________________________________________________________________________________ | |
260 | void AliEveEventBuffer::StopBufferMonitor() { | |
261 | cout << "Stopping buffer mon"<<endl; | |
262 | SetBufferMonStarted(kFALSE); | |
263 | fTimer->Stop(); | |
264 | } | |
265 | ||
266 | ||
267 | // //_________________________________________________________________________________ | |
268 | // Int_t AliEveEventBuffer::NavigateEventBufferBack() { | |
269 | // // see header file for class documentation | |
270 | ||
271 | // // -- reached the end of the buffer | |
272 | // if ( fNavigateBufferIdx == fBufferLowIdx ) | |
273 | // return -1; | |
274 | ||
275 | // Int_t newIdx = fNavigateBufferIdx - 1; | |
276 | // if ( newIdx == -1 ) | |
277 | // newIdx = BUFFERSIZE-1; | |
278 | ||
279 | // fCurrentBufferIdx = fNavigateBufferIdx = newIdx; | |
280 | ||
281 | // return newIdx; | |
282 | // } | |
283 | ||
284 | // //_______________________________________________________________ | |
285 | // Int_t AliEveEventBuffer::NavigateEventBufferFwd() { | |
286 | // // see header file for class documentation | |
287 | ||
288 | // // -- reached the top of the buffer | |
289 | // if ( fNavigateBufferIdx == fBufferTopIdx ) | |
290 | // return -1; | |
291 | ||
292 | // Int_t newIdx = fNavigateBufferIdx + 1; | |
293 | // if ( newIdx == BUFFERSIZE ) | |
294 | // newIdx = 0; | |
295 | ||
296 | // fCurrentBufferIdx = fNavigateBufferIdx = newIdx; | |
297 | ||
298 | // return newIdx; | |
299 | // } | |
300 | ||
301 | // void AliEveEventBuffer::MonitorBuffer() { | |
302 | // //See header file for documentation | |
303 | // if( GetNAvailableEvents() < 10) { | |
304 | // StopBufferChecker(); | |
305 | // StartLoop(); | |
306 | // } | |
307 | // } | |
308 | ||
309 | // void AliEveEventBuffer::StartLoop() { | |
310 | // //See header file for documentation | |
311 | // fTimer->Start(2000); | |
312 | // } | |
313 | // void AliEveEventBuffer::StopLoop() { | |
314 | // //See header file for documentation | |
315 | // fTimer->Stop(); | |
316 | // } | |
317 | ||
318 | // void AliEveEventBuffer::StartBufferChecker() { | |
319 | // //See header file for documentation | |
320 | // fBufferTimer->Start(2000); | |
321 | // } | |
322 | // void AliEveEventBuffer::StopBufferChecker() { | |
323 | // //See header file for documentation | |
324 | // fBufferTimer->Stop(); | |
325 | // } | |
326 | ||
327 | // AliESDEvent * GetNextEvent() { | |
328 | ||
329 | // tree->GetEntry(fEvent++); | |
330 | ||
331 | // AliESDEvent * event = new AliESDEvent(); | |
332 | // event->ReadFromTree(fTree); | |
333 | // if (event) { | |
334 | // return event; | |
335 | // } else { | |
336 | // cout << "error getting event" << endl; | |
337 | // return NULL; | |
338 | // } | |
339 | // } |