/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
-/* AliHLTComponentHandler
- global HLT module management
- */
+/** @file AliHLTSystem.h
+ @author Matthias Richter
+ @date
+ @brief Global HLT module management and AliRoot integration.
+ @note The class is used in Offline (AliRoot) context
+*/
+/**
+ * @defgroup alihlt_system HLT integration into AliRoot
+ * This section describes the HLT integration into AliRoot.
+ */
-#include "AliL3RootTypes.h"
#include "AliHLTLogging.h"
#include <TList.h>
class AliHLTConfiguration;
class AliHLTConfigurationHandler;
class AliHLTTask;
+class AliRunLoader;
+class AliRawReader;
+class AliESD;
+class TObjArray;
+class TStopwatch;
+/**
+ * @class AliHLTSystem
+ * Main class for the HLT integration into AliRoot.
+ * The class handles a list of configurations. Configurations are translated
+ * into task lists which can be executed.
+ *
+ * @note This class is only used for the @ref alihlt_system.
+ *
+ * @ingroup alihlt_system
+ */
class AliHLTSystem : public AliHLTLogging {
public:
+ /** default constructor */
AliHLTSystem();
+ /** not a valid copy constructor, defined according to effective C++ style */
+ AliHLTSystem(const AliHLTSystem&);
+ /** not a valid assignment op, but defined according to effective C++ style */
+ AliHLTSystem& operator=(const AliHLTSystem&);
+ /** destructor */
virtual ~AliHLTSystem();
- AliHLTComponentHandler* fpComponentHandler;
- AliHLTConfigurationHandler* fpConfigurationHandler;
+ /**
+ * Pointer to an instance of @ref AliHLTComponentHandler.
+ */
+ AliHLTComponentHandler* fpComponentHandler; //! transient
- /* add a configuration to the end of the list
+ /**
+ * Pointer to an instance of @ref AliHLTConfigurationHandler.
+ */
+ AliHLTConfigurationHandler* fpConfigurationHandler; //! transient
+
+ /**
+ * Add a configuration to the end of the list.
+ * @param pConf pointer to configuration to add
*/
int AddConfiguration(AliHLTConfiguration* pConf);
- /* add a configuration to the list after the specified configuration
+ /**
+ * Insert a configuration to the end of the list after the specified
+ * configuration.
+ * @param pConf pointer to configuration to insert
+ * @param pPrec pointer to configuration to insert the new one after
*/
int InsertConfiguration(AliHLTConfiguration* pConf, AliHLTConfiguration* pPrec);
- /* remove a configuration from the list
+ /**
+ * Remove a configuration from the list.
+ * @param pConf pointer to configuration to delete
*/
int DeleteConfiguration(AliHLTConfiguration* pConf);
- /* build a task list from the configuration list
+ /**
+ * Build a task list
+ * This method is used to build the tasks from the 'master' configuration
+ * objects which are added to the HLT system handler. This is an iterative
+ * process since the task might depend upon other configurations. For each
+ * configuration object which has not yet been converted into a task, the
+ * method will be called iteratively. Finally, after building all tasks which
+ * the current one depends on have been created, the task is inserted to the
+ * list of tasks with the InsertTask method.
+ * @param pConf configuration name/id
+ */
+ int BuildTaskList(const char* pConf);
+
+ /**
+ * Build task list from a configuration object.
+ * This method is kept for backward compatibility. Use the version
+ * with the configuration name.
+ * @param pConf pointer to configuration to build the task list from
*/
int BuildTaskList(AliHLTConfiguration* pConf);
+ /**
+ * Clean the list of tasks and delete all the task objects.
+ */
int CleanTaskList();
+ /**
+ * Insert a task to the task list.
+ * The method first checks whether all dependencies are resolved (i.e. exist
+ * already in the task list). During this iteration the cross links between
+ * the tasks are set as well. If all dependencies are resolved, the task is
+ * added at the end of the list.
+ * @param pTask pointer to task to add
+ */
int InsertTask(AliHLTTask* pTask);
+ /**
+ * Find a task with an id.
+ * @param id CONFIGURATION id (not a COMPONENT id!)
+ */
AliHLTTask* FindTask(const char* id);
+ /**
+ * Print the task list.
+ */
void PrintTaskList();
- /* run the task list
+ /**
+ * Run the task list.
+ * The method checks whether the task list has already been build. If not,
+ * or the configuration list has been changed, the @ref BuildTaskList
+ * method is scalled
+ * All tasks of the list will be subsequently processed for each event.
+ * @param iNofEvents number of events
+ * @return number of reconstructed events, neg error code if failed
+ */
+ int Run(Int_t iNofEvents=1);
+
+ /**
+ * Init all tasks from the list.
+ * The @ref AliHLTTask::Init method is called for each task, the components
+ * will be created.
+ * @return neg error code if failed
*/
- int Run();
+ int InitTasks();
+
+ /**
+ * Init the stopwatches for all tasks.
+ * @param pStopwatches object array of stopwatches, for types
+ * @see AliHLTComponent::AliHLTStopwatchType
+ * @return neg error code if failed
+ */
+ int InitBenchmarking(TObjArray* pStopwatches);
+
+ /**
+ * Start task list.
+ * The @ref AliHLTTask::StartRun method is called for each task, the
+ * components will be prepared for event processing.
+ * @return neg error code if failed
+ */
+ int StartTasks();
+
+ /**
+ * Process task list.
+ * The @ref AliHLTTask::ProcessTask method is called for each task.
+ * @return neg error code if failed
+ */
+ int ProcessTasks(Int_t eventNo);
+
+ /**
+ * Stop task list.
+ * The @ref AliHLTTask::EndRun method is called for each task, the components
+ * will be cleaned after event processing.
+ * @return neg error code if failed
+ */
+ int StopTasks();
+
+ /**
+ * De-init all tasks from the list.
+ * The @ref AliHLTTask::Deinit method is called for each task, the components
+ * will be deleted.
+ * @return neg error code if failed
+ */
+ int DeinitTasks();
+
+ /**
+ * The memory allocation function for components.
+ * This function is part of the running environment of the components.
+ */
+ static void* AllocMemory( void* param, unsigned long size );
+
+ /**
+ * Reconstruction inside AliRoot.
+ * To be called by the AliHLTReconstructor plugin during the
+ * LocalReconstruction step of the AliRoot reconstruction. The latter means
+ * that all events are reconstructed at once, the event loop is internally
+ * implemented. In contrast to that, the FillESD method is called event by
+ * event. This requires an 'ESD' recorder at the end of the HLT chain, in
+ * order to have the reconstructed events available for the FillESD loop.
+ * The 'runLoader' and 'rawReader' parameters are set to all active
+ * AliHLTOfflineDataSource's and the HLT chain is processed for the given
+ * number of events. If the rawReader is NULL, reconstruction is done on
+ * simulated data, from real data if a RawReader is specified.
+ * @param nofEvents number of events
+ * @param runLoader the AliRoot runloader
+ * @param rawReader the AliRoot RawReader
+ * @return number of reconstructed events, neg. error code if failed
+ */
+ int Reconstruct(int nofEvents, AliRunLoader* runLoader,
+ AliRawReader* rawReader=NULL);
+
+ /**
+ * Fill ESD for one event.
+ * To be called by the AliHLTReconstructor plugin during the event loop
+ * and FillESD method of the AliRoot reconstruction.
+ * This method is called on event basis, and thus must copy the previously
+ * reconstructed data of the event from the 'ESD' recorder. The FillESD
+ * method of all active AliHLTOfflineDataSink's is called.
+ * @param eventNo current event no (Note: this event number is just a
+ * processing counter and is not related to the nature/
+ * origin of the event
+ * @param runLoader the AliRoot runloader
+ * @param esd an AliESD instance
+ * @return neg. error code if failed
+ */
+ int FillESD(int eventNo, AliRunLoader* runLoader, AliESD* esd);
+
+ /**
+ * Load component libraries.
+ * @param libs string of blank separated library names
+ * @return neg. error code if failed
+ */
+ int LoadComponentLibraries(const char* libs);
+
+ /**
+ * Find a symbol in a dynamically loaded library.
+ * @param library library
+ * @param symbol the symbol to find
+ * @return void pointer to function
+ */
+ void* FindDynamicSymbol(const char* library, const char* symbol);
+
+ /**
+ * Prepare the HLT system for running.
+ * - module agents are requested to register configurations
+ * - task lists are built from the top configurations of the modules
+ * @return neg. error code if failed <br>
+ * -EBUSY system is in kRunning state <br>
+ */
+ int Configure(AliRunLoader* runloader=NULL);
+
+ /**
+ * Reset the HLT system.
+ * Reset is not possible while the system is in running state.
+ * @param bForce force the reset
+ * @return neg. error code if failed <br>
+ * -EBUSY system is in kRunning state <br>
+ */
+ int Reset(int bForce=0);
+
+ /**
+ * Load the configurations specified by the module agents.
+ * The runLoader is passed to the agent and allows configuration
+ * selection.
+ * @return neg. error code if failed
+ */
+ int LoadConfigurations(AliRunLoader* runloader=NULL);
+
+ /**
+ * Get the top configurations of all agents and build the task lists.
+ * @return neg. error code if failed
+ */
+ int BuildTaskListsFromTopConfigurations(AliRunLoader* runloader=NULL);
+
+ enum AliHLTSystemState_t {
+ kUninitialized = 0x0,
+ kLibrariesLoaded = 0x1,
+ kConfigurationLoaded = 0x2,
+ kTaskListCreated = 0x4,
+ kReady = 0x7,
+ kRunning = 0x8,
+ kError = 0x1000
+ };
+
+ /**
+ * Check status of the system.
+ * @param flag AliHLTSystemState_t value to check for
+ * @return 1 if set, 0 if not
+ */
+ int CheckStatus(int flag);
+
+ /**
+ * Get the current status.
+ * @return status flags of @ref AliHLTSystemState_t
+ */
+ int GetStatusFlags();
protected:
- int ProcessTask();
- int StartEvent();
- int ProcessEvent();
- int StopEvent();
private:
- TList fConfList;
- int fbListChanged;
+ /**
+ * Set status flags.
+ */
+ int SetStatusFlags(int flags);
+
+ /**
+ * clear status flags.
+ */
+ int ClearStatusFlags(int flags);
+
+/* TList fConfList; */
+/* int fbListChanged; */
+
+ /** list of tasks */
+ TList fTaskList; // see above
+
+ /** the number of instances of AliHLTSystem */
+ static int fgNofInstances; // see above
- TList fTaskList;
+ /** state of the object */
+ int fState; // see above
private:
- ClassDef(AliHLTSystem, 0);
+ ClassDef(AliHLTSystem, 2);
};
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff