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a197a4ce | 1 | // @(#)alimdc:$Name$:$Id$ |
2 | // Author: Fons Rademakers 26/11/99 | |
3 | ||
4 | /************************************************************************** | |
5 | * Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. * | |
6 | * * | |
7 | * Author: The ALICE Off-line Project. * | |
8 | * Contributors are mentioned in the code where appropriate. * | |
9 | * * | |
10 | * Permission to use, copy, modify and distribute this software and its * | |
11 | * documentation strictly for non-commercial purposes is hereby granted * | |
12 | * without fee, provided that the above copyright notice appears in all * | |
13 | * copies and that both the copyright notice and this permission notice * | |
14 | * appear in the supporting documentation. The authors make no claims * | |
15 | * about the suitability of this software for any purpose. It is * | |
16 | * provided "as is" without express or implied warranty. * | |
17 | **************************************************************************/ | |
18 | ||
19 | ////////////////////////////////////////////////////////////////////////// | |
20 | // // | |
21 | // AliRawDB // | |
22 | // // | |
23 | ////////////////////////////////////////////////////////////////////////// | |
24 | ||
25 | #include <errno.h> | |
26 | ||
27 | #include <TSystem.h> | |
28 | ||
29 | #ifdef ALI_DATE | |
30 | #include "event.h" | |
31 | #endif | |
32 | ||
33 | #include "AliRawEvent.h" | |
34 | #include "AliRawEventHeader.h" | |
35 | #include "AliMDC.h" | |
36 | ||
a109e73e | 37 | #ifdef USE_HLT |
38 | #include "AliESD.h" | |
39 | #endif | |
40 | ||
a197a4ce | 41 | #include "AliRawDB.h" |
42 | ||
43 | ||
44 | ClassImp(AliRawDB) | |
45 | ||
46 | ||
47 | //______________________________________________________________________________ | |
a109e73e | 48 | AliRawDB::AliRawDB(AliRawEvent *event, |
49 | #ifdef USE_HLT | |
50 | AliESD *esd, | |
51 | #endif | |
52 | Double_t maxsize, Int_t compress, | |
a197a4ce | 53 | Bool_t create) |
54 | { | |
55 | // Create a new raw DB containing at most maxsize bytes. | |
56 | ||
57 | fEvent = event; | |
a109e73e | 58 | fESD = esd; |
a197a4ce | 59 | fMaxSize = maxsize; |
60 | fCompress = compress; | |
61 | ||
62 | // Consistency check with DATE header file | |
63 | #ifdef ALI_DATE | |
64 | if (fEvent->GetHeader()->HeaderSize() != EVENT_HEAD_BASE_SIZE) { | |
65 | Error("AliRawDB", "inconsistency between DATE and AliRawEvent headers"); | |
66 | MakeZombie(); | |
67 | return; | |
68 | } | |
69 | #endif | |
70 | ||
71 | if (create) { | |
72 | if (!Create()) | |
73 | MakeZombie(); | |
74 | } | |
75 | } | |
76 | ||
77 | //______________________________________________________________________________ | |
78 | AliRawDB::AliRawDB(const AliRawDB& rawDB): TObject(rawDB) | |
79 | { | |
80 | // copy constructor | |
81 | ||
82 | Fatal("AliRawDB", "copy constructor not implemented"); | |
83 | } | |
84 | ||
85 | //______________________________________________________________________________ | |
86 | AliRawDB& AliRawDB::operator = (const AliRawDB& /*rawDB*/) | |
87 | { | |
88 | // assignment operator | |
89 | ||
90 | Fatal("operator =", "assignment operator not implemented"); | |
91 | return *this; | |
92 | } | |
93 | ||
94 | //______________________________________________________________________________ | |
95 | Bool_t AliRawDB::FSHasSpace(const char *fs) const | |
96 | { | |
97 | // Check for at least fMaxSize bytes of free space on the file system. | |
98 | // If the space is not available return kFALSE, kTRUE otherwise. | |
99 | ||
100 | Long_t id, bsize, blocks, bfree; | |
101 | ||
102 | if (gSystem->GetFsInfo(fs, &id, &bsize, &blocks, &bfree) == 1) { | |
103 | Error("FSHasSpace", "could not stat file system %s", fs); | |
104 | return kFALSE; | |
105 | } | |
106 | ||
107 | // Leave 5 percent of diskspace free | |
108 | Double_t avail = Double_t(bfree) * 0.95; | |
109 | if (avail*bsize > fMaxSize) | |
110 | return kTRUE; | |
111 | ||
112 | Warning("FSHasSpace", "no space on file system %s", fs); | |
113 | return kFALSE; | |
114 | } | |
115 | ||
116 | //______________________________________________________________________________ | |
117 | const char *AliRawDB::GetFileName() const | |
118 | { | |
119 | // Return filename based on hostname and date and time. This will make | |
120 | // each file unique. Also makes sure (via FSHasSpace()) that there is | |
121 | // enough space on the file system to store the file. Returns 0 in | |
122 | // case of error or interrupt signal. | |
123 | ||
124 | static TString fname; | |
125 | static Bool_t fstoggle = kFALSE; | |
126 | ||
127 | TString fs = fstoggle ? AliMDC::RawDBFS(1) : AliMDC::RawDBFS(0); | |
128 | TDatime dt; | |
129 | ||
130 | TString hostname = gSystem->HostName(); | |
131 | Int_t pos; | |
132 | if ((pos = hostname.Index(".")) != kNPOS) | |
133 | hostname.Remove(pos); | |
134 | ||
135 | if (!FSHasSpace(fs)) { | |
136 | while (1) { | |
137 | fstoggle = !fstoggle; | |
138 | fs = fstoggle ? AliMDC::RawDBFS(1) : AliMDC::RawDBFS(0); | |
139 | if (FSHasSpace(fs)) break; | |
140 | Info("GetFileName", "sleeping 30 seconds before retrying..."); | |
141 | gSystem->Sleep(30000); // sleep for 30 seconds | |
142 | if (AliMDC::Instance() && AliMDC::Instance()->StopLoop()) | |
143 | return 0; | |
144 | } | |
145 | } | |
146 | ||
147 | fname = fs + "/" + hostname + "_"; | |
148 | fname += dt.GetDate(); | |
149 | fname += "_"; | |
150 | fname += dt.GetTime(); | |
151 | fname += ".root"; | |
152 | ||
153 | fstoggle = !fstoggle; | |
154 | ||
155 | return fname; | |
156 | } | |
157 | ||
158 | //______________________________________________________________________________ | |
159 | Bool_t AliRawDB::Create() | |
160 | { | |
161 | // Create a new raw DB. | |
162 | ||
163 | const Int_t kMaxRetry = 200; | |
164 | const Int_t kMaxSleep = 1; // seconds | |
165 | const Int_t kMaxSleepLong = 10; // seconds | |
166 | Int_t retry = 0; | |
167 | ||
168 | again: | |
169 | if (AliMDC::Instance() && AliMDC::Instance()->StopLoop()) | |
170 | return kFALSE; | |
171 | ||
172 | const char *fname = GetFileName(); | |
173 | if (!fname) { | |
174 | Error("Create", "error getting raw DB file name"); | |
175 | return kFALSE; | |
176 | } | |
177 | ||
178 | retry++; | |
179 | ||
180 | fRawDB = TFile::Open(fname, GetOpenOption(), | |
181 | Form("ALICE MDC%d raw DB", AliMDC::kMDC), fCompress, | |
182 | GetNetopt()); | |
183 | if (!fRawDB) { | |
184 | if (retry < kMaxRetry) { | |
185 | Warning("Create", "failure to open file, sleeping %d %s before retrying...", | |
186 | kMaxSleep, kMaxSleep==1 ? "second" : "seconds"); | |
187 | gSystem->Sleep(kMaxSleep*1000); | |
188 | goto again; | |
189 | } | |
190 | Error("Create", "failure to open file %s after %d tries", fname, kMaxRetry); | |
191 | return kFALSE; | |
192 | } | |
193 | if (retry > 1) | |
194 | Warning("Create", "succeeded to open file after %d retries", retry); | |
195 | ||
196 | if (fRawDB->IsZombie()) { | |
197 | if (fRawDB->GetErrno() == ENOSPC || | |
198 | fRawDB->GetErrno() == 1018 || // SECOMERR | |
199 | fRawDB->GetErrno() == 1027) { // SESYSERR | |
200 | fRawDB->ResetErrno(); | |
201 | delete fRawDB; | |
202 | Warning("Create", "file is a zombie (no space), sleeping %d %s before retrying...", | |
203 | kMaxSleepLong, kMaxSleepLong==1 ? "second" : "seconds"); | |
204 | gSystem->Sleep(kMaxSleepLong*1000); // sleep 10 seconds before retrying | |
205 | goto again; | |
206 | } | |
207 | Error("Create", "file %s is zombie", fname); | |
208 | fRawDB->ResetErrno(); | |
209 | delete fRawDB; | |
210 | fRawDB = 0; | |
211 | if (retry < kMaxRetry) { | |
212 | Warning("Create", "file is a zombie, sleeping %d %s before retrying...", | |
213 | kMaxSleep, kMaxSleep==1 ? "second" : "seconds"); | |
214 | gSystem->Sleep(kMaxSleep*1000); | |
215 | goto again; | |
216 | } | |
217 | Error("Create", "failure to open file %s after %d tries", fname, kMaxRetry); | |
218 | return kFALSE; | |
219 | } | |
220 | ||
221 | // Create raw data TTree | |
222 | MakeTree(); | |
223 | ||
224 | return kTRUE; | |
225 | } | |
226 | ||
227 | //______________________________________________________________________________ | |
228 | void AliRawDB::MakeTree() | |
229 | { | |
230 | // Create ROOT Tree object container. | |
231 | ||
232 | fTree = new TTree("RAW", Form("ALICE MDC%d raw data tree", AliMDC::kMDC)); | |
233 | fTree->SetAutoSave(2000000000); // autosave when 2 Gbyte written | |
234 | ||
235 | Int_t bufsize = 256000; | |
236 | // splitting 29.6 MB/s, no splitting 35.3 MB/s on P4 2GHz 15k SCSI | |
237 | //Int_t split = 1; | |
238 | Int_t split = 0; | |
239 | fTree->Branch("rawevent", "AliRawEvent", &fEvent, bufsize, split); | |
a109e73e | 240 | |
241 | #ifdef USE_HLT | |
242 | // Create tree which will contain the HLT ESD information | |
243 | ||
244 | fESDTree = new TTree("esdTree", Form("ALICE MDC%d HLT ESD tree", AliMDC::kMDC)); | |
245 | fESDTree->SetAutoSave(2000000000); // autosave when 2 Gbyte written | |
246 | split = 99; | |
247 | fESDTree->Branch("ESD", "AliESD", &fESD, bufsize, split); | |
248 | #endif | |
249 | ||
a197a4ce | 250 | } |
251 | ||
252 | //______________________________________________________________________________ | |
253 | void AliRawDB::Close() | |
254 | { | |
255 | // Close raw DB. | |
256 | ||
257 | if (!fRawDB) return; | |
258 | ||
259 | fRawDB->cd(); | |
260 | ||
261 | // Write the tree. | |
262 | fTree->Write(); | |
a109e73e | 263 | fESDTree->Write(); |
a197a4ce | 264 | |
265 | // Close DB, this also deletes the fTree | |
266 | fRawDB->Close(); | |
267 | ||
268 | if (AliMDC::DeleteFiles()) { | |
269 | gSystem->Unlink(fRawDB->GetName()); | |
270 | delete fRawDB; | |
271 | fRawDB = 0; | |
272 | return; | |
273 | } | |
274 | ||
275 | // Create semaphore to say this file is finished | |
276 | Int_t tfd = ::creat(Form("%s.done", fRawDB->GetName()), 0644); | |
277 | close(tfd); | |
278 | ||
279 | delete fRawDB; | |
280 | fRawDB = 0; | |
281 | } | |
282 | ||
283 | //______________________________________________________________________________ | |
284 | Bool_t AliRawDB::NextFile() | |
285 | { | |
286 | // Close te current file and open a new one. | |
287 | // Returns kFALSE in case opening failed. | |
288 | ||
289 | Close(); | |
290 | ||
291 | if (!Create()) return kFALSE; | |
292 | return kTRUE; | |
293 | } | |
294 | ||
295 | //______________________________________________________________________________ | |
296 | Float_t AliRawDB::GetCompressionFactor() const | |
297 | { | |
298 | // Return compression factor. | |
299 | ||
300 | if (fTree->GetZipBytes() == 0.) | |
301 | return 1.0; | |
302 | else | |
303 | return fTree->GetTotBytes()/fTree->GetZipBytes(); | |
304 | } |