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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" |
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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> |
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33 | |
34 | ClassImp(AliHLTGlobalTriggerComponent) |
35 | |
36 | |
37 | AliHLTGlobalTriggerComponent::AliHLTGlobalTriggerComponent() : |
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38 | AliHLTTrigger(), |
39 | fTrigger(NULL) |
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40 | { |
41 | // Default constructor. |
42 | } |
43 | |
44 | |
45 | AliHLTGlobalTriggerComponent::~AliHLTGlobalTriggerComponent() |
46 | { |
47 | // Default destructor. |
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48 | |
49 | if (fTrigger != NULL) delete fTrigger; |
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50 | } |
51 | |
52 | |
53 | void AliHLTGlobalTriggerComponent::GetOutputDataSize(unsigned long& constBase, double& inputMultiplier) |
54 | { |
55 | // Returns the output data size estimate. |
56 | |
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57 | constBase = sizeof(AliHLTGlobalTriggerDecision); |
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58 | inputMultiplier = 1; |
59 | } |
60 | |
61 | |
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62 | Int_t AliHLTGlobalTriggerComponent::DoInit(int /*argc*/, const char** /*argv*/) |
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63 | { |
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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 | |
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81 | |
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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 | |
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92 | return 0; |
93 | } |
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94 | |
95 | |
96 | AliHLTComponent* AliHLTGlobalTriggerComponent::Spawn() |
97 | { |
98 | // Creates a new object instance. |
99 | |
100 | return new AliHLTGlobalTriggerComponent; |
101 | } |
102 | |
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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 | |