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1b9a175e | 1 | /************************************************************************** |
2 | * This file is property of and copyright by the ALICE HLT Project * | |
3 | * ALICE Experiment at CERN, All rights reserved. * | |
4 | * * | |
5 | * Primary Authors: Artur Szostak <artursz@iafrica.com> * | |
6 | * for The ALICE HLT Project. * | |
7 | * * | |
8 | * Permission to use, copy, modify and distribute this software and its * | |
9 | * documentation strictly for non-commercial purposes is hereby granted * | |
10 | * without fee, provided that the above copyright notice appears in all * | |
11 | * copies and that both the copyright notice and this permission notice * | |
12 | * appear in the supporting documentation. The authors make no claims * | |
13 | * about the suitability of this software for any purpose. It is * | |
14 | * provided "as is" without express or implied warranty. * | |
15 | **************************************************************************/ | |
16 | ||
17 | /// @file AliHLTGlobalTriggerComponent.cxx | |
18 | /// @author Artur Szostak <artursz@iafrica.com> | |
19 | /// @date 26 Nov 2008 | |
20 | /// @brief Implementation of the AliHLTGlobalTriggerComponent component class. | |
21 | /// | |
22 | /// The AliHLTGlobalTriggerComponentComponent class applies the global HLT trigger to all | |
23 | /// trigger information produced by components deriving from AliHLTTrigger. | |
24 | ||
25 | #include "AliHLTGlobalTriggerComponent.h" | |
e2bb8ddd | 26 | #include "AliHLTGlobalTriggerDecision.h" |
27 | #include "AliHLTGlobalTrigger.h" | |
28 | #include "TUUID.h" | |
29 | #include "TROOT.h" | |
30 | #include "TSystem.h" | |
31 | #include <fstream> | |
32 | #include <cerrno> | |
1b9a175e | 33 | |
34 | ClassImp(AliHLTGlobalTriggerComponent) | |
35 | ||
36 | ||
37 | AliHLTGlobalTriggerComponent::AliHLTGlobalTriggerComponent() : | |
e2bb8ddd | 38 | AliHLTTrigger(), |
39 | fTrigger(NULL) | |
1b9a175e | 40 | { |
41 | // Default constructor. | |
42 | } | |
43 | ||
44 | ||
45 | AliHLTGlobalTriggerComponent::~AliHLTGlobalTriggerComponent() | |
46 | { | |
47 | // Default destructor. | |
e2bb8ddd | 48 | |
49 | if (fTrigger != NULL) delete fTrigger; | |
1b9a175e | 50 | } |
51 | ||
52 | ||
53 | void AliHLTGlobalTriggerComponent::GetOutputDataSize(unsigned long& constBase, double& inputMultiplier) | |
54 | { | |
55 | // Returns the output data size estimate. | |
56 | ||
e2bb8ddd | 57 | constBase = sizeof(AliHLTGlobalTriggerDecision); |
1b9a175e | 58 | inputMultiplier = 1; |
59 | } | |
60 | ||
61 | ||
e2bb8ddd | 62 | Int_t AliHLTGlobalTriggerComponent::DoInit(int /*argc*/, const char** /*argv*/) |
1b9a175e | 63 | { |
e2bb8ddd | 64 | // Initialises the global trigger component. |
65 | ||
66 | AliHLTTriggerMenu* menu = NULL; | |
67 | TString classname; | |
68 | int result = GenerateTrigger(menu, classname); | |
69 | if (result != 0) return result; | |
70 | ||
71 | fTrigger = AliHLTGlobalTrigger::CreateNew(classname.Data()); | |
72 | if (fTrigger == NULL) | |
73 | { | |
74 | HLTError("Could not create a new instance of '%s'.", classname.Data()); | |
75 | return -EIO; | |
76 | } | |
77 | ||
78 | return 0; | |
79 | } | |
80 | ||
1b9a175e | 81 | |
e2bb8ddd | 82 | Int_t AliHLTGlobalTriggerComponent::DoDeinit() |
83 | { | |
84 | // Cleans up the global trigger component. | |
85 | ||
86 | if (fTrigger != NULL) | |
87 | { | |
88 | delete fTrigger; | |
89 | fTrigger = NULL; | |
90 | } | |
91 | ||
1b9a175e | 92 | return 0; |
93 | } | |
4f1d6b68 | 94 | |
95 | ||
96 | AliHLTComponent* AliHLTGlobalTriggerComponent::Spawn() | |
97 | { | |
98 | // Creates a new object instance. | |
99 | ||
100 | return new AliHLTGlobalTriggerComponent; | |
101 | } | |
102 | ||
e2bb8ddd | 103 | |
104 | int AliHLTGlobalTriggerComponent::DoTrigger() | |
105 | { | |
106 | // This method will apply the global trigger decision. | |
107 | ||
108 | if (fTrigger == NULL) | |
109 | { | |
110 | HLTFatal("Global trigger implementation object is NULL!"); | |
111 | return -EIO; | |
112 | } | |
113 | ||
114 | fTrigger->NewEvent(); | |
115 | ||
116 | // Fill in the input data. | |
117 | const TObject* obj = GetFirstInputObject(); | |
118 | while (obj != NULL) | |
119 | { | |
120 | if (obj->IsA() == AliHLTTriggerDecision::Class()) | |
121 | { | |
122 | const AliHLTTriggerDecision* decision = static_cast<const AliHLTTriggerDecision*>(obj); | |
123 | fTrigger->Add(decision); | |
124 | } | |
125 | else | |
126 | { | |
127 | fTrigger->Add(obj, GetDataType(), GetSpecification()); | |
128 | } | |
129 | obj = GetNextInputObject(); | |
130 | } | |
131 | ||
132 | // Apply the trigger. | |
133 | TriggerEvent(fTrigger->CalculateTriggerDecision()); | |
134 | return 0; | |
135 | } | |
136 | ||
137 | ||
138 | int AliHLTGlobalTriggerComponent::GenerateTrigger(const AliHLTTriggerMenu* /*menu*/, TString& name) | |
139 | { | |
140 | // Generates the global trigger class that will implement the specified trigger menu. | |
141 | ||
142 | // Create a new UUID and replace the '-' characters with '_' to make it a valid | |
143 | // C++ symbol name. | |
144 | TUUID uuid; | |
145 | TString uuidstr = uuid.AsString(); | |
146 | for (Int_t i = 0; i < uuidstr.Length(); i++) | |
147 | { | |
148 | if (uuidstr[i] == '-') uuidstr[i] = '_'; | |
149 | } | |
150 | ||
151 | // Create the name of the new class. | |
152 | name = "AliHLTGlobalTriggerImpl_"; | |
153 | name += uuidstr; | |
154 | TString filename = name + ".cxx"; | |
155 | ||
156 | fstream code(filename.Data(), ios_base::out | ios_base::trunc); | |
157 | if (not code.good()) | |
158 | { | |
159 | HLTError("Could not open file '%s' for writing.", filename.Data()); | |
160 | return -EIO; | |
161 | } | |
162 | ||
163 | code << "#include \"AliHLTGlobalTrigger.h\"" << endl; | |
164 | code << "#include \"AliHLTGlobalTriggerDecision.h\"" << endl; | |
165 | code << "class " << name << " : public AliHLTGlobalTrigger" << endl; | |
166 | code << "{" << endl; | |
167 | code << "public:" << endl; | |
168 | code << " " << name << "() : AliHLTGlobalTrigger(), fDecision() {" << endl; | |
169 | code << " }" << endl; | |
170 | code << " virtual ~" << name << "() {" << endl; | |
171 | code << " }" << endl; | |
172 | code << " virtual void NewEvent() {" << endl; | |
173 | //code << " ;" << endl; | |
174 | code << " }" << endl; | |
175 | code << " virtual void Add(const AliHLTTriggerDecision* decision) {" << endl; | |
176 | //code << " ;" << endl; | |
177 | code << " }" << endl; | |
178 | code << " virtual void Add(const TObject* object, const AliHLTComponentDataType& type, AliHLTUInt32_t spec) {" << endl; | |
179 | //code << " ;" << endl; | |
180 | code << " }" << endl; | |
181 | code << " virtual AliHLTGlobalTriggerDecision* CalculateTriggerDecision() {" << endl; | |
182 | code << " return &fDecision;" << endl; | |
183 | code << " }" << endl; | |
184 | code << " class FactoryImpl : public AliHLTGlobalTrigger::Factory" << endl; | |
185 | code << " {" << endl; | |
186 | code << " public:" << endl; | |
187 | code << " virtual const char* ClassName() const {" << endl; | |
188 | code << " return \"" << name << "\";" << endl; | |
189 | code << " }" << endl; | |
190 | code << " virtual AliHLTGlobalTrigger* New() const {" << endl; | |
191 | code << " return new " << name << "();" << endl; | |
192 | code << " }" << endl; | |
193 | code << " private:" << endl; | |
194 | code << " static FactoryImpl fFactoryImpl; // for registration only." << endl; | |
195 | code << " };" << endl; | |
196 | code << "private:" << endl; | |
197 | code << " AliHLTGlobalTriggerDecision fDecision;" << endl; | |
198 | code << "};" << endl; | |
199 | code << name << "::FactoryImpl " << name << "::FactoryImpl::fFactoryImpl;" << endl; | |
200 | ||
201 | TString includePath = "-I${ALICE_ROOT}/include -I${ALICE_ROOT}/HLT/BASE -I${ALICE_ROOT}/HLT/trigger"; | |
202 | gSystem->SetIncludePath(includePath); | |
203 | ||
204 | TString cmd = ".L "; | |
205 | cmd += filename; | |
206 | cmd += "++"; | |
207 | gROOT->ProcessLine(cmd); | |
208 | ||
209 | code.close(); | |
210 | ||
211 | return 0; | |
212 | } | |
213 |