Adding new calibration flavours for trigger
[u/mrichter/AliRoot.git] / RAW / AliTagDB.cxx
CommitLineData
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// AliTagDB //
22// //
23//////////////////////////////////////////////////////////////////////////
24
e10815f1 25#include <errno.h>
26
a197a4ce 27#include <TSystem.h>
28
52f36b9b 29#include "AliESD.h"
a197a4ce 30
52f36b9b 31#include "AliRawDB.h"
f2dc6b20 32#include "AliRawEventHeaderBase.h"
a197a4ce 33#include "AliTagDB.h"
34
35
36ClassImp(AliTagDB)
37
38
39//______________________________________________________________________________
f2dc6b20 40AliTagDB::AliTagDB(AliRawEventHeaderBase *header, const char* fileName) :
e10815f1 41 fTagDB(NULL),
42 fTree(NULL),
43 fHeader(header),
44 fMaxSize(-1),
45 fFS(""),
46 fDeleteFiles(kFALSE)
a197a4ce 47{
48 // Create tag DB.
49
e10815f1 50 if (fileName) {
51 if (!Create(fileName))
a197a4ce 52 MakeZombie();
53 }
54}
55
56//______________________________________________________________________________
57AliTagDB::AliTagDB(const AliTagDB& tagDB): TObject(tagDB)
58{
59// copy constructor
60
61 Fatal("AliTagDB", "copy constructor not implemented");
62}
63
64//______________________________________________________________________________
65AliTagDB& AliTagDB::operator = (const AliTagDB& /*tagDB*/)
66{
67// assignment operator
68
69 Fatal("operator =", "assignment operator not implemented");
70 return *this;
71}
72
73//______________________________________________________________________________
e10815f1 74Bool_t AliTagDB::Create(const char* fileName)
a197a4ce 75{
76 // Create a new tag DB.
77
e10815f1 78 const char *name = fileName;
79 if (!name) name = GetFileName();
80 fTagDB = new TFile(name, "RECREATE",
81 Form("ALICE MDC%d tag DB", AliRawDB::kMDC), 1);
a197a4ce 82 if (fTagDB->IsZombie()) {
83 Error("Create", "error opening tag DB");
84 fTagDB = 0;
85 return kFALSE;
86 }
f07ec911 87 // Put wide read-write permissions
88 if(gSystem->Chmod(name,438)) {
89 Error("Create", "can't set permissions for tag DB file");
90 fTagDB = 0;
91 return kFALSE;
92 }
a197a4ce 93
94 // Create ROOT Tree object container
e10815f1 95 fTree = new TTree("TAG", Form("ALICE MDC%d header data tree", AliRawDB::kMDC));
a197a4ce 96 fTree->SetAutoSave(100000000); // autosave when 100 Mbyte written
97
98 Int_t bufsize = 32000;
99 Int_t split = 1;
f2dc6b20 100 const char *headername = fHeader->GetName();
101 fTree->Branch("header", headername, &fHeader, bufsize, split);
a197a4ce 102
103 return kTRUE;
104}
105
106//______________________________________________________________________________
107void AliTagDB::Close()
108{
109 // Close tag DB.
110
111 if (!fTagDB) return;
112
113 fTagDB->cd();
114
115 // Write the tree.
116 fTree->Write();
117
118 // Close DB, this also deletes the fTree
119 fTagDB->Close();
120
e10815f1 121 if (fDeleteFiles)
a197a4ce 122 gSystem->Unlink(fTagDB->GetName());
123
124 delete fTagDB;
125 fTagDB = 0;
126}
127
128//______________________________________________________________________________
e10815f1 129Bool_t AliTagDB::NextFile(const char* fileName)
a197a4ce 130{
131 // Close te current file and open a new one.
132 // Returns kFALSE in case opening failed.
133
134 Close();
135
e10815f1 136 if (!Create(fileName)) return kFALSE;
a197a4ce 137 return kTRUE;
138}
139
140//______________________________________________________________________________
e10815f1 141void AliTagDB::SetFS(const char* fs)
142{
143// set the file system location
144
145 fFS = fs;
146 if (fs) {
147 gSystem->ResetErrno();
148 gSystem->MakeDirectory(fs);
149 if (gSystem->GetErrno() && gSystem->GetErrno() != EEXIST) {
150 SysError("SetFS", "mkdir %s", fs);
151 }
152 }
153}
154
155//______________________________________________________________________________
a197a4ce 156Float_t AliTagDB::GetCompressionFactor() const
157{
158 // Return compression factor.
159
160 if (fTree->GetZipBytes() == 0.)
161 return 1.0;
162 else
163 return fTree->GetTotBytes()/fTree->GetZipBytes();
164}
165
166//______________________________________________________________________________
167const char *AliTagDB::GetFileName() const
168{
169 // Return filename based on hostname and date and time. This will make
170 // each file unique. The tags will be stored in the /data1/tags directory.
171
172 static char fname[64];
e10815f1 173 const char *fs = fFS;
a197a4ce 174
175 // check that fs exists (crude check fails if fs is a file)
176 gSystem->MakeDirectory(fs);
177
178 char hostname[64];
179
180 strcpy(hostname, gSystem->HostName());
181
182 char *s;
183 if ((s = strchr(hostname, '.')))
184 *s = 0;
185
186 TDatime dt;
187
188 sprintf(fname, "%s/%s_%d_%d.root", fs, hostname, dt.GetDate(), dt.GetTime());
189
190 return fname;
191}