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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 | // AliTagDB // | |
22 | // // | |
23 | ////////////////////////////////////////////////////////////////////////// | |
24 | ||
25 | #include <TSystem.h> | |
26 | ||
27 | #include "AliMDC.h" | |
28 | ||
29 | #include "AliTagDB.h" | |
30 | ||
31 | ||
32 | ClassImp(AliTagDB) | |
33 | ||
34 | ||
35 | //______________________________________________________________________________ | |
36 | AliTagDB::AliTagDB(AliRawEventHeader *header, Double_t maxsize, Bool_t create) | |
37 | { | |
38 | // Create tag DB. | |
39 | ||
40 | fHeader = header; | |
41 | fMaxSize = maxsize; | |
42 | ||
43 | if (create) { | |
44 | if (!Create()) | |
45 | MakeZombie(); | |
46 | } | |
47 | } | |
48 | ||
49 | //______________________________________________________________________________ | |
50 | AliTagDB::AliTagDB(const AliTagDB& tagDB): TObject(tagDB) | |
51 | { | |
52 | // copy constructor | |
53 | ||
54 | Fatal("AliTagDB", "copy constructor not implemented"); | |
55 | } | |
56 | ||
57 | //______________________________________________________________________________ | |
58 | AliTagDB& AliTagDB::operator = (const AliTagDB& /*tagDB*/) | |
59 | { | |
60 | // assignment operator | |
61 | ||
62 | Fatal("operator =", "assignment operator not implemented"); | |
63 | return *this; | |
64 | } | |
65 | ||
66 | //______________________________________________________________________________ | |
67 | Bool_t AliTagDB::Create() | |
68 | { | |
69 | // Create a new tag DB. | |
70 | ||
71 | fTagDB = new TFile(GetFileName(), "RECREATE", | |
72 | Form("ALICE MDC%d tag DB", AliMDC::kMDC), 1); | |
73 | if (fTagDB->IsZombie()) { | |
74 | Error("Create", "error opening tag DB"); | |
75 | fTagDB = 0; | |
76 | return kFALSE; | |
77 | } | |
78 | ||
79 | // Create ROOT Tree object container | |
80 | fTree = new TTree("TAG", Form("ALICE MDC%d header data tree", AliMDC::kMDC)); | |
81 | fTree->SetAutoSave(100000000); // autosave when 100 Mbyte written | |
82 | ||
83 | Int_t bufsize = 32000; | |
84 | Int_t split = 1; | |
85 | fTree->Branch("header", "AliRawEventHeader", &fHeader, bufsize, split); | |
86 | ||
87 | return kTRUE; | |
88 | } | |
89 | ||
90 | //______________________________________________________________________________ | |
91 | void AliTagDB::Close() | |
92 | { | |
93 | // Close tag DB. | |
94 | ||
95 | if (!fTagDB) return; | |
96 | ||
97 | fTagDB->cd(); | |
98 | ||
99 | // Write the tree. | |
100 | fTree->Write(); | |
101 | ||
102 | // Close DB, this also deletes the fTree | |
103 | fTagDB->Close(); | |
104 | ||
105 | if (AliMDC::DeleteFiles()) | |
106 | gSystem->Unlink(fTagDB->GetName()); | |
107 | ||
108 | delete fTagDB; | |
109 | fTagDB = 0; | |
110 | } | |
111 | ||
112 | //______________________________________________________________________________ | |
113 | Bool_t AliTagDB::NextFile() | |
114 | { | |
115 | // Close te current file and open a new one. | |
116 | // Returns kFALSE in case opening failed. | |
117 | ||
118 | Close(); | |
119 | ||
120 | if (!Create()) return kFALSE; | |
121 | return kTRUE; | |
122 | } | |
123 | ||
124 | //______________________________________________________________________________ | |
125 | Float_t AliTagDB::GetCompressionFactor() const | |
126 | { | |
127 | // Return compression factor. | |
128 | ||
129 | if (fTree->GetZipBytes() == 0.) | |
130 | return 1.0; | |
131 | else | |
132 | return fTree->GetTotBytes()/fTree->GetZipBytes(); | |
133 | } | |
134 | ||
135 | //______________________________________________________________________________ | |
136 | const char *AliTagDB::GetFileName() const | |
137 | { | |
138 | // Return filename based on hostname and date and time. This will make | |
139 | // each file unique. The tags will be stored in the /data1/tags directory. | |
140 | ||
141 | static char fname[64]; | |
142 | const char *fs = AliMDC::TagDBFS(); | |
143 | ||
144 | // check that fs exists (crude check fails if fs is a file) | |
145 | gSystem->MakeDirectory(fs); | |
146 | ||
147 | char hostname[64]; | |
148 | ||
149 | strcpy(hostname, gSystem->HostName()); | |
150 | ||
151 | char *s; | |
152 | if ((s = strchr(hostname, '.'))) | |
153 | *s = 0; | |
154 | ||
155 | TDatime dt; | |
156 | ||
157 | sprintf(fname, "%s/%s_%d_%d.root", fs, hostname, dt.GetDate(), dt.GetTime()); | |
158 | ||
159 | return fname; | |
160 | } |