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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 | ||
37 | #include "AliRawDB.h" | |
38 | ||
39 | ||
40 | ClassImp(AliRawDB) | |
41 | ||
42 | ||
43 | //______________________________________________________________________________ | |
44 | AliRawDB::AliRawDB(AliRawEvent *event, Double_t maxsize, Int_t compress, | |
45 | Bool_t create) | |
46 | { | |
47 | // Create a new raw DB containing at most maxsize bytes. | |
48 | ||
49 | fEvent = event; | |
50 | fMaxSize = maxsize; | |
51 | fCompress = compress; | |
52 | ||
53 | // Consistency check with DATE header file | |
54 | #ifdef ALI_DATE | |
55 | if (fEvent->GetHeader()->HeaderSize() != EVENT_HEAD_BASE_SIZE) { | |
56 | Error("AliRawDB", "inconsistency between DATE and AliRawEvent headers"); | |
57 | MakeZombie(); | |
58 | return; | |
59 | } | |
60 | #endif | |
61 | ||
62 | if (create) { | |
63 | if (!Create()) | |
64 | MakeZombie(); | |
65 | } | |
66 | } | |
67 | ||
68 | //______________________________________________________________________________ | |
69 | AliRawDB::AliRawDB(const AliRawDB& rawDB): TObject(rawDB) | |
70 | { | |
71 | // copy constructor | |
72 | ||
73 | Fatal("AliRawDB", "copy constructor not implemented"); | |
74 | } | |
75 | ||
76 | //______________________________________________________________________________ | |
77 | AliRawDB& AliRawDB::operator = (const AliRawDB& /*rawDB*/) | |
78 | { | |
79 | // assignment operator | |
80 | ||
81 | Fatal("operator =", "assignment operator not implemented"); | |
82 | return *this; | |
83 | } | |
84 | ||
85 | //______________________________________________________________________________ | |
86 | Bool_t AliRawDB::FSHasSpace(const char *fs) const | |
87 | { | |
88 | // Check for at least fMaxSize bytes of free space on the file system. | |
89 | // If the space is not available return kFALSE, kTRUE otherwise. | |
90 | ||
91 | Long_t id, bsize, blocks, bfree; | |
92 | ||
93 | if (gSystem->GetFsInfo(fs, &id, &bsize, &blocks, &bfree) == 1) { | |
94 | Error("FSHasSpace", "could not stat file system %s", fs); | |
95 | return kFALSE; | |
96 | } | |
97 | ||
98 | // Leave 5 percent of diskspace free | |
99 | Double_t avail = Double_t(bfree) * 0.95; | |
100 | if (avail*bsize > fMaxSize) | |
101 | return kTRUE; | |
102 | ||
103 | Warning("FSHasSpace", "no space on file system %s", fs); | |
104 | return kFALSE; | |
105 | } | |
106 | ||
107 | //______________________________________________________________________________ | |
108 | const char *AliRawDB::GetFileName() const | |
109 | { | |
110 | // Return filename based on hostname and date and time. This will make | |
111 | // each file unique. Also makes sure (via FSHasSpace()) that there is | |
112 | // enough space on the file system to store the file. Returns 0 in | |
113 | // case of error or interrupt signal. | |
114 | ||
115 | static TString fname; | |
116 | static Bool_t fstoggle = kFALSE; | |
117 | ||
118 | TString fs = fstoggle ? AliMDC::RawDBFS(1) : AliMDC::RawDBFS(0); | |
119 | TDatime dt; | |
120 | ||
121 | TString hostname = gSystem->HostName(); | |
122 | Int_t pos; | |
123 | if ((pos = hostname.Index(".")) != kNPOS) | |
124 | hostname.Remove(pos); | |
125 | ||
126 | if (!FSHasSpace(fs)) { | |
127 | while (1) { | |
128 | fstoggle = !fstoggle; | |
129 | fs = fstoggle ? AliMDC::RawDBFS(1) : AliMDC::RawDBFS(0); | |
130 | if (FSHasSpace(fs)) break; | |
131 | Info("GetFileName", "sleeping 30 seconds before retrying..."); | |
132 | gSystem->Sleep(30000); // sleep for 30 seconds | |
133 | if (AliMDC::Instance() && AliMDC::Instance()->StopLoop()) | |
134 | return 0; | |
135 | } | |
136 | } | |
137 | ||
138 | fname = fs + "/" + hostname + "_"; | |
139 | fname += dt.GetDate(); | |
140 | fname += "_"; | |
141 | fname += dt.GetTime(); | |
142 | fname += ".root"; | |
143 | ||
144 | fstoggle = !fstoggle; | |
145 | ||
146 | return fname; | |
147 | } | |
148 | ||
149 | //______________________________________________________________________________ | |
150 | Bool_t AliRawDB::Create() | |
151 | { | |
152 | // Create a new raw DB. | |
153 | ||
154 | const Int_t kMaxRetry = 200; | |
155 | const Int_t kMaxSleep = 1; // seconds | |
156 | const Int_t kMaxSleepLong = 10; // seconds | |
157 | Int_t retry = 0; | |
158 | ||
159 | again: | |
160 | if (AliMDC::Instance() && AliMDC::Instance()->StopLoop()) | |
161 | return kFALSE; | |
162 | ||
163 | const char *fname = GetFileName(); | |
164 | if (!fname) { | |
165 | Error("Create", "error getting raw DB file name"); | |
166 | return kFALSE; | |
167 | } | |
168 | ||
169 | retry++; | |
170 | ||
171 | fRawDB = TFile::Open(fname, GetOpenOption(), | |
172 | Form("ALICE MDC%d raw DB", AliMDC::kMDC), fCompress, | |
173 | GetNetopt()); | |
174 | if (!fRawDB) { | |
175 | if (retry < kMaxRetry) { | |
176 | Warning("Create", "failure to open file, sleeping %d %s before retrying...", | |
177 | kMaxSleep, kMaxSleep==1 ? "second" : "seconds"); | |
178 | gSystem->Sleep(kMaxSleep*1000); | |
179 | goto again; | |
180 | } | |
181 | Error("Create", "failure to open file %s after %d tries", fname, kMaxRetry); | |
182 | return kFALSE; | |
183 | } | |
184 | if (retry > 1) | |
185 | Warning("Create", "succeeded to open file after %d retries", retry); | |
186 | ||
187 | if (fRawDB->IsZombie()) { | |
188 | if (fRawDB->GetErrno() == ENOSPC || | |
189 | fRawDB->GetErrno() == 1018 || // SECOMERR | |
190 | fRawDB->GetErrno() == 1027) { // SESYSERR | |
191 | fRawDB->ResetErrno(); | |
192 | delete fRawDB; | |
193 | Warning("Create", "file is a zombie (no space), sleeping %d %s before retrying...", | |
194 | kMaxSleepLong, kMaxSleepLong==1 ? "second" : "seconds"); | |
195 | gSystem->Sleep(kMaxSleepLong*1000); // sleep 10 seconds before retrying | |
196 | goto again; | |
197 | } | |
198 | Error("Create", "file %s is zombie", fname); | |
199 | fRawDB->ResetErrno(); | |
200 | delete fRawDB; | |
201 | fRawDB = 0; | |
202 | if (retry < kMaxRetry) { | |
203 | Warning("Create", "file is a zombie, sleeping %d %s before retrying...", | |
204 | kMaxSleep, kMaxSleep==1 ? "second" : "seconds"); | |
205 | gSystem->Sleep(kMaxSleep*1000); | |
206 | goto again; | |
207 | } | |
208 | Error("Create", "failure to open file %s after %d tries", fname, kMaxRetry); | |
209 | return kFALSE; | |
210 | } | |
211 | ||
212 | // Create raw data TTree | |
213 | MakeTree(); | |
214 | ||
215 | return kTRUE; | |
216 | } | |
217 | ||
218 | //______________________________________________________________________________ | |
219 | void AliRawDB::MakeTree() | |
220 | { | |
221 | // Create ROOT Tree object container. | |
222 | ||
223 | fTree = new TTree("RAW", Form("ALICE MDC%d raw data tree", AliMDC::kMDC)); | |
224 | fTree->SetAutoSave(2000000000); // autosave when 2 Gbyte written | |
225 | ||
226 | Int_t bufsize = 256000; | |
227 | // splitting 29.6 MB/s, no splitting 35.3 MB/s on P4 2GHz 15k SCSI | |
228 | //Int_t split = 1; | |
229 | Int_t split = 0; | |
230 | fTree->Branch("rawevent", "AliRawEvent", &fEvent, bufsize, split); | |
231 | } | |
232 | ||
233 | //______________________________________________________________________________ | |
234 | void AliRawDB::Close() | |
235 | { | |
236 | // Close raw DB. | |
237 | ||
238 | if (!fRawDB) return; | |
239 | ||
240 | fRawDB->cd(); | |
241 | ||
242 | // Write the tree. | |
243 | fTree->Write(); | |
244 | ||
245 | // Close DB, this also deletes the fTree | |
246 | fRawDB->Close(); | |
247 | ||
248 | if (AliMDC::DeleteFiles()) { | |
249 | gSystem->Unlink(fRawDB->GetName()); | |
250 | delete fRawDB; | |
251 | fRawDB = 0; | |
252 | return; | |
253 | } | |
254 | ||
255 | // Create semaphore to say this file is finished | |
256 | Int_t tfd = ::creat(Form("%s.done", fRawDB->GetName()), 0644); | |
257 | close(tfd); | |
258 | ||
259 | delete fRawDB; | |
260 | fRawDB = 0; | |
261 | } | |
262 | ||
263 | //______________________________________________________________________________ | |
264 | Bool_t AliRawDB::NextFile() | |
265 | { | |
266 | // Close te current file and open a new one. | |
267 | // Returns kFALSE in case opening failed. | |
268 | ||
269 | Close(); | |
270 | ||
271 | if (!Create()) return kFALSE; | |
272 | return kTRUE; | |
273 | } | |
274 | ||
275 | //______________________________________________________________________________ | |
276 | Float_t AliRawDB::GetCompressionFactor() const | |
277 | { | |
278 | // Return compression factor. | |
279 | ||
280 | if (fTree->GetZipBytes() == 0.) | |
281 | return 1.0; | |
282 | else | |
283 | return fTree->GetTotBytes()/fTree->GetZipBytes(); | |
284 | } |