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f23a6e1a | 1 | // @(#) $Id$ |
2 | ||
3 | #ifndef ALIHLTSYSTEM_H | |
4 | #define ALIHLTSYSTEM_H | |
5 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
6 | * See cxx source for full Copyright notice */ | |
7 | ||
b22e91eb | 8 | /** @file AliHLTSystem.h |
9 | @author Matthias Richter | |
10 | @date | |
11 | @brief Global HLT module management and AliRoot integration. | |
12 | @note The class is used in Offline (AliRoot) context | |
13 | */ | |
f23a6e1a | 14 | |
b22e91eb | 15 | /** |
16 | * @defgroup alihlt_system HLT integration into AliRoot | |
17 | * This section describes the HLT integration into AliRoot. | |
18 | */ | |
f23a6e1a | 19 | |
5ec8e281 | 20 | #include "AliHLTLogging.h" |
21 | #include <TList.h> | |
f23a6e1a | 22 | |
5ec8e281 | 23 | class AliHLTComponentHandler; |
24 | class AliHLTConfiguration; | |
85465857 | 25 | class AliHLTConfigurationHandler; |
5ec8e281 | 26 | class AliHLTTask; |
242bb794 | 27 | class AliRunLoader; |
28 | class AliRawReader; | |
29 | class AliESD; | |
90ebac25 | 30 | class TObjArray; |
31 | class TStopwatch; | |
f23a6e1a | 32 | |
bfccbf68 | 33 | /** |
34 | * @class AliHLTSystem | |
35 | * Main class for the HLT integration into AliRoot. | |
36 | * The class handles a list of configurations. Configurations are translated | |
37 | * into task lists which can be executed. | |
38 | * | |
b22e91eb | 39 | * @note This class is only used for the @ref alihlt_system. |
40 | * | |
41 | * @ingroup alihlt_system | |
bfccbf68 | 42 | */ |
5ec8e281 | 43 | class AliHLTSystem : public AliHLTLogging { |
44 | public: | |
bfccbf68 | 45 | /** default constructor */ |
f23a6e1a | 46 | AliHLTSystem(); |
85869391 | 47 | /** not a valid copy constructor, defined according to effective C++ style */ |
48 | AliHLTSystem(const AliHLTSystem&); | |
49 | /** not a valid assignment op, but defined according to effective C++ style */ | |
50 | AliHLTSystem& operator=(const AliHLTSystem&); | |
bfccbf68 | 51 | /** destructor */ |
f23a6e1a | 52 | virtual ~AliHLTSystem(); |
53 | ||
bfccbf68 | 54 | /** |
55 | * Pointer to an instance of @ref AliHLTComponentHandler. | |
3b35e87c | 56 | */ |
70ed7d01 | 57 | AliHLTComponentHandler* fpComponentHandler; //! transient |
bfccbf68 | 58 | |
59 | /** | |
60 | * Pointer to an instance of @ref AliHLTConfigurationHandler. | |
61 | */ | |
70ed7d01 | 62 | AliHLTConfigurationHandler* fpConfigurationHandler; //! transient |
f23a6e1a | 63 | |
bfccbf68 | 64 | /** |
65 | * Add a configuration to the end of the list. | |
66 | * @param pConf pointer to configuration to add | |
5ec8e281 | 67 | */ |
68 | int AddConfiguration(AliHLTConfiguration* pConf); | |
69 | ||
bfccbf68 | 70 | /** |
70ed7d01 | 71 | * Insert a configuration to the end of the list after the specified |
72 | * configuration. | |
bfccbf68 | 73 | * @param pConf pointer to configuration to insert |
74 | * @param pPrec pointer to configuration to insert the new one after | |
5ec8e281 | 75 | */ |
76 | int InsertConfiguration(AliHLTConfiguration* pConf, AliHLTConfiguration* pPrec); | |
77 | ||
bfccbf68 | 78 | /** |
79 | * Remove a configuration from the list. | |
80 | * @param pConf pointer to configuration to delete | |
5ec8e281 | 81 | */ |
82 | int DeleteConfiguration(AliHLTConfiguration* pConf); | |
83 | ||
bfccbf68 | 84 | /** |
85 | * Build a task list from a configuration object. | |
3b35e87c | 86 | * This method is used to build the tasks from the 'master' configuration |
87 | * objects which are added to the HLT system handler. This is an iterative | |
88 | * process since the task might depend upon other configurations. For each | |
89 | * configuration object which has not yet been converted into a task, the | |
90 | * method will be called iteratively. Finally, after building all tasks which | |
91 | * the current one depends on have been created, the task is inserted to the | |
92 | * list of tasks with the InsertTask method. | |
bfccbf68 | 93 | * @param pConf pointer to configuration to build the task list from |
5ec8e281 | 94 | */ |
95 | int BuildTaskList(AliHLTConfiguration* pConf); | |
96 | ||
bfccbf68 | 97 | /** |
98 | * Clean the list of tasks and delete all the task objects. | |
3b35e87c | 99 | */ |
5ec8e281 | 100 | int CleanTaskList(); |
101 | ||
bfccbf68 | 102 | /** |
103 | * Insert a task to the task list. | |
104 | * The method first checks whether all dependencies are resolved (i.e. exist | |
70ed7d01 | 105 | * already in the task list). During this iteration the cross links between |
106 | * the tasks are set as well. If all dependencies are resolved, the task is | |
107 | * added at the end of the list. | |
bfccbf68 | 108 | * @param pTask pointer to task to add |
3b35e87c | 109 | */ |
5ec8e281 | 110 | int InsertTask(AliHLTTask* pTask); |
111 | ||
bfccbf68 | 112 | /** |
113 | * Find a task with an id. | |
114 | * @param id CONFIGURATION id (not a COMPONENT id!) | |
3b35e87c | 115 | */ |
5ec8e281 | 116 | AliHLTTask* FindTask(const char* id); |
117 | ||
bfccbf68 | 118 | /** |
119 | * Print the task list. | |
3b35e87c | 120 | */ |
5ec8e281 | 121 | void PrintTaskList(); |
122 | ||
53feaef5 | 123 | /** |
124 | * Run the task list. | |
9ce4bf4a | 125 | * The method checks whether the task list has already been build. If not, |
126 | * or the configuration list has been changed, the @ref BuildTaskList | |
127 | * method is scalled | |
53feaef5 | 128 | * All tasks of the list will be subsequently processed for each event. |
129 | * @param iNofEvents number of events | |
242bb794 | 130 | * @return number of reconstructed events, neg error code if failed |
53feaef5 | 131 | */ |
132 | int Run(Int_t iNofEvents=1); | |
133 | ||
9ce4bf4a | 134 | /** |
135 | * Init all tasks from the list. | |
136 | * The @ref AliHLTTask::Init method is called for each task, the components | |
137 | * will be created. | |
138 | * @return neg error code if failed | |
139 | */ | |
140 | int InitTasks(); | |
141 | ||
90ebac25 | 142 | /** |
143 | * Init the stopwatches for all tasks. | |
144 | * @param pStopwatches object array of stopwatches, for types | |
145 | * @see AliHLTComponent::AliHLTStopwatchType | |
146 | * @return neg error code if failed | |
147 | */ | |
148 | int InitBenchmarking(TObjArray* pStopwatches); | |
149 | ||
53feaef5 | 150 | /** |
151 | * Start task list. | |
70ed7d01 | 152 | * The @ref AliHLTTask::StartRun method is called for each task, the |
153 | * components will be prepared for event processing. | |
53feaef5 | 154 | * @return neg error code if failed |
155 | */ | |
156 | int StartTasks(); | |
157 | ||
158 | /** | |
159 | * Process task list. | |
160 | * The @ref AliHLTTask::ProcessTask method is called for each task. | |
161 | * @return neg error code if failed | |
162 | */ | |
163 | int ProcessTasks(Int_t eventNo); | |
164 | ||
165 | /** | |
166 | * Stop task list. | |
167 | * The @ref AliHLTTask::EndRun method is called for each task, the components | |
168 | * will be cleaned after event processing. | |
169 | * @return neg error code if failed | |
5ec8e281 | 170 | */ |
53feaef5 | 171 | int StopTasks(); |
5ec8e281 | 172 | |
9ce4bf4a | 173 | /** |
174 | * De-init all tasks from the list. | |
175 | * The @ref AliHLTTask::Deinit method is called for each task, the components | |
176 | * will be deleted. | |
177 | * @return neg error code if failed | |
178 | */ | |
179 | int DeinitTasks(); | |
180 | ||
181 | /** | |
182 | * The memory allocation function for components. | |
183 | * This function is part of the running environment of the components. | |
184 | */ | |
185 | static void* AllocMemory( void* param, unsigned long size ); | |
186 | ||
242bb794 | 187 | /** |
188 | * Reconstruction inside AliRoot. | |
189 | * To be called by the AliHLTReconstructor plugin during the | |
190 | * LocalReconstruction step of the AliRoot reconstruction. The latter means | |
191 | * that all events are reconstructed at once, the event loop is internally | |
192 | * implemented. In contrast to that, the FillESD method is called event by | |
193 | * event. This requires an 'ESD' recorder at the end of the HLT chain, in | |
194 | * order to have the reconstructed events available for the FillESD loop. | |
195 | * The 'runLoader' and 'rawReader' parameters are set to all active | |
196 | * AliHLTOfflineDataSource's and the HLT chain is processed for the given | |
197 | * number of events. If the rawReader is NULL, reconstruction is done on | |
198 | * simulated data, from real data if a RawReader is specified. | |
199 | * @param nofEvents number of events | |
200 | * @param runLoader the AliRoot runloader | |
201 | * @param rawReader the AliRoot RawReader | |
202 | * @return number of reconstructed events, neg. error code if failed | |
203 | */ | |
204 | int Reconstruct(int nofEvents, AliRunLoader* runLoader, | |
205 | AliRawReader* rawReader=NULL); | |
206 | ||
207 | /** | |
208 | * Fill ESD for one event. | |
209 | * To be called by the AliHLTReconstructor plugin during the event loop | |
210 | * and FillESD method of the AliRoot reconstruction. | |
211 | * This method is called on event basis, and thus must copy the previously | |
212 | * reconstructed data of the event from the 'ESD' recorder. The FillESD | |
213 | * method of all active AliHLTOfflineDataSink's is called. | |
214 | * @param eventNo current event no (Note: this event number is just a | |
215 | * processing counter and is not related to the nature/ | |
216 | * origin of the event | |
217 | * @param runLoader the AliRoot runloader | |
218 | * @param esd an AliESD instance | |
219 | * @return neg. error code if failed | |
220 | */ | |
221 | int FillESD(int eventNo, AliRunLoader* runLoader, AliESD* esd); | |
222 | ||
223 | /** | |
224 | * Load component libraries. | |
225 | * @param libs string of blank separated library names | |
226 | * @return neg. error code if failed | |
227 | */ | |
228 | int LoadComponentLibraries(const char* libs); | |
229 | ||
85f0cede | 230 | /** |
231 | * Find a symbol in a dynamically loaded library. | |
232 | * @param library library | |
233 | * @param symbol the symbol to find | |
234 | * @return void pointer to function | |
235 | */ | |
236 | void* FindDynamicSymbol(const char* library, const char* symbol); | |
237 | ||
242bb794 | 238 | /** |
239 | * Prepare the HLT system for running. | |
240 | * - module agents are requested to register configurations | |
241 | * - task lists are built from the top configurations of the modules | |
242 | * @return neg. error code if failed <br> | |
243 | * -EBUSY system is in kRunning state <br> | |
244 | */ | |
245 | int Configure(AliRunLoader* runloader=NULL); | |
246 | ||
247 | /** | |
248 | * Reset the HLT system. | |
249 | * Reset is not possible while the system is in running state. | |
250 | * @param bForce force the reset | |
251 | * @return neg. error code if failed <br> | |
252 | * -EBUSY system is in kRunning state <br> | |
253 | */ | |
254 | int Reset(int bForce=0); | |
255 | ||
256 | /** | |
257 | * Load the configurations specified by the module agents. | |
258 | * The runLoader is passed to the agent and allows configuration | |
259 | * selection. | |
260 | * @return neg. error code if failed | |
261 | */ | |
262 | int LoadConfigurations(AliRunLoader* runloader=NULL); | |
263 | ||
264 | /** | |
265 | * Get the top configurations of all agents and build the task lists. | |
266 | * @return neg. error code if failed | |
267 | */ | |
268 | int BuildTaskListsFromTopConfigurations(AliRunLoader* runloader=NULL); | |
269 | ||
9253e11b | 270 | enum AliHLTSystemState_t { |
242bb794 | 271 | kUninitialized = 0x0, |
272 | kLibrariesLoaded = 0x1, | |
273 | kConfigurationLoaded = 0x2, | |
274 | kTaskListCreated = 0x4, | |
275 | kReady = 0x7, | |
276 | kRunning = 0x8, | |
277 | kError = 0x1000 | |
9253e11b | 278 | }; |
242bb794 | 279 | |
280 | /** | |
281 | * Check status of the system. | |
282 | * @param flag AliHLTSystemState_t value to check for | |
283 | * @return 1 if set, 0 if not | |
284 | */ | |
285 | int CheckStatus(int flag); | |
286 | ||
287 | /** | |
288 | * Get the current status. | |
289 | * @return status flags of @ref AliHLTSystemState_t | |
290 | */ | |
291 | int GetStatusFlags(); | |
292 | ||
5ec8e281 | 293 | protected: |
5ec8e281 | 294 | |
295 | private: | |
242bb794 | 296 | /** |
297 | * Set status flags. | |
298 | */ | |
299 | int SetStatusFlags(int flags); | |
300 | ||
301 | /** | |
302 | * clear status flags. | |
303 | */ | |
304 | int ClearStatusFlags(int flags); | |
305 | ||
85869391 | 306 | /* TList fConfList; */ |
307 | /* int fbListChanged; */ | |
5ec8e281 | 308 | |
242bb794 | 309 | /** list of tasks */ |
70ed7d01 | 310 | TList fTaskList; // see above |
f23a6e1a | 311 | |
fc455fba | 312 | /** the number of instances of AliHLTSystem */ |
313 | static int fgNofInstances; // see above | |
314 | ||
242bb794 | 315 | /** state of the object */ |
316 | int fState; // see above | |
317 | ||
5ec8e281 | 318 | private: |
fc455fba | 319 | ClassDef(AliHLTSystem, 2); |
f23a6e1a | 320 | }; |
321 | #endif | |
322 |