| # Gaudi Framework, version v21r6 |

Home |  | Generated: 11 Nov 2009

# IAlgorithm Class Reference

`#include <GaudiKernel/IAlgorithm.h>`

Inheritance diagram for IAlgorithm:

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Collaboration diagram for IAlgorithm:

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List of all members.

## Detailed Description

The IAlgorithm is the interface implemented by the Algorithm base class.

Concrete algorithms, derived from the Algorithm base class are controlled via this interface.

Author:
  Paul Maley

  D.Quarrie

  Marco Clemencic

Definition at line 20 of file IAlgorithm.h.

## Public Member Functions
| DeclareInterfaceID (IAlgorithm, 4, 0)
| InterfaceID.
virtual const std::string & | version () const =0
| The version of the algorithm.
virtual StatusCode | execute ()=0
| The action to be performed by the algorithm on an event.
virtual bool | isInitialized () const =0
| check if the algorithm is initialized properly
virtual bool | isFinalized () const =0
| check if the algorithm is finalized properly
virtual bool | isExecuted () const =0
| check if the algorithm is already executed for the current event
virtual StatusCode | configure ()=0
| Configuration (from OFFLINE to CONFIGURED).
virtual StatusCode | initialize ()=0
| Initialization (from CONFIGURED to INITIALIZED).
virtual StatusCode | start ()=0
| Start (from INITIALIZED to RUNNING).
virtual StatusCode | stop ()=0
| Stop (from RUNNING to INITIALIZED).
virtual StatusCode | finalize ()=0
| Finalize (from INITIALIZED to CONFIGURED).
virtual StatusCode | terminate ()=0
| Initialization (from CONFIGURED to OFFLINE).
virtual StatusCode | reinitialize ()=0
| Initialization (from INITIALIZED or RUNNING to INITIALIZED, via CONFIGURED).
virtual StatusCode | restart ()=0
| Initialization (from RUNNING to RUNNING, via INITIALIZED).
virtual Gaudi::StateMachine::State | FSMState () const =0
| Get the current state.
virtual StatusCode | sysInitialize ()=0
| Initialization method invoked by the framework.
virtual StatusCode | sysStart ()=0
| Startup method invoked by the framework.
virtual StatusCode | sysReinitialize ()=0
| Re-initialization method invoked by the framework.
virtual StatusCode | sysRestart ()=0
| Re-start method invoked by the framework.
virtual StatusCode | sysExecute ()=0
| System execution. This method invokes the execute() method of a concrete algorithm.
virtual StatusCode | sysStop ()=0
| System stop.
virtual StatusCode | sysFinalize ()=0
| System finalization.
virtual StatusCode | sysBeginRun ()=0
| beginRun method invoked by the framework.
virtual StatusCode | sysEndRun ()=0
| endRun method invoked by the framework.
virtual void | resetExecuted ()=0
| Reset the Algorithm executed state for the current event.
virtual StatusCode | beginRun ()=0
| Algorithm begin run.
virtual StatusCode | endRun ()=0
| Algorithm end run.
virtual void | setExecuted (bool state)=0
| Set the executed flag to the specified state.
virtual bool | isEnabled () const =0
| Is this algorithm enabled or disabled?
virtual bool | filterPassed () const =0
| Did this algorithm pass or fail its filter criterion for the last event?
virtual void | setFilterPassed (bool state)=0
| Set the filter passed flag to the specified state.

## Member Function Documentation

IAlgorithm::DeclareInterfaceID | ( | IAlgorithm | ,
|  | 4 | ,
|  | 0 |  |
| ) |  |  |

InterfaceID.

virtual const std::string& IAlgorithm::version | ( |  | ) | const`[pure virtual]`

The version of the algorithm.

virtual StatusCode IAlgorithm::execute | ( |  | ) | `[pure virtual]`

The action to be performed by the algorithm on an event.

This method is invoked once per event for top level algorithms by the application manager.

virtual bool IAlgorithm::isInitialized | ( |  | ) | const`[pure virtual]`

check if the algorithm is initialized properly

virtual bool IAlgorithm::isFinalized | ( |  | ) | const`[pure virtual]`

check if the algorithm is finalized properly

virtual bool IAlgorithm::isExecuted | ( |  | ) | const`[pure virtual]`

check if the algorithm is already executed for the current event

virtual StatusCode IAlgorithm::configure | ( |  | ) | `[pure virtual]`

Configuration (from OFFLINE to CONFIGURED).

virtual StatusCode IAlgorithm::initialize | ( |  | ) | `[pure virtual]`

Initialization (from CONFIGURED to INITIALIZED).

virtual StatusCode IAlgorithm::start | ( |  | ) | `[pure virtual]`

Start (from INITIALIZED to RUNNING).

virtual StatusCode IAlgorithm::stop | ( |  | ) | `[pure virtual]`

Stop (from RUNNING to INITIALIZED).

virtual StatusCode IAlgorithm::finalize | ( |  | ) | `[pure virtual]`

Finalize (from INITIALIZED to CONFIGURED).

virtual StatusCode IAlgorithm::terminate | ( |  | ) | `[pure virtual]`

Initialization (from CONFIGURED to OFFLINE).

virtual StatusCode IAlgorithm::reinitialize | ( |  | ) | `[pure virtual]`

Initialization (from INITIALIZED or RUNNING to INITIALIZED, via CONFIGURED).

virtual StatusCode IAlgorithm::restart | ( |  | ) | `[pure virtual]`

Initialization (from RUNNING to RUNNING, via INITIALIZED).

virtual Gaudi::StateMachine::State IAlgorithm::FSMState | ( |  | ) | const`[pure virtual]`

Get the current state.

virtual StatusCode IAlgorithm::sysInitialize | ( |  | ) | `[pure virtual]`

Initialization method invoked by the framework.

This method is responsible for any bookkeeping of initialization required by the framework itself. It will in turn invoke the initialize() method of the derived algorithm, and of any sub-algorithms which it creates.

virtual StatusCode IAlgorithm::sysStart | ( |  | ) | `[pure virtual]`

Startup method invoked by the framework.

This method is responsible for any bookkeeping of initialization required by the framework itself. It will in turn invoke the start() method of the derived algorithm, and of any sub-algorithms which it creates.

virtual StatusCode IAlgorithm::sysReinitialize | ( |  | ) | `[pure virtual]`

Re-initialization method invoked by the framework.

This method is responsible for any re-initialization required by the framework itself. It will in turn invoke the reinitialize() method of the derived algorithm, and of any sub-algorithms which it creates.

virtual StatusCode IAlgorithm::sysRestart | ( |  | ) | `[pure virtual]`

Re-start method invoked by the framework.

This method is responsible for any re-start required by the framework itself. It will in turn invoke the restart() method of the derived algorithm, and of any sub-algorithms which it creates.

virtual StatusCode IAlgorithm::sysExecute | ( |  | ) | `[pure virtual]`

System execution. This method invokes the execute() method of a concrete algorithm.

virtual StatusCode IAlgorithm::sysStop | ( |  | ) | `[pure virtual]`

System stop.

This method invokes the stop() method of a concrete algorithm and the stop() methods of all of that algorithm's sub algorithms.

virtual StatusCode IAlgorithm::sysFinalize | ( |  | ) | `[pure virtual]`

System finalization.

This method invokes the finalize() method of a concrete algorithm and the finalize() methods of all of that algorithm's sub algorithms.

virtual StatusCode IAlgorithm::sysBeginRun | ( |  | ) | `[pure virtual]`

beginRun method invoked by the framework.

This method is responsible for any beginRun actions required by the framework itself. It will in turn invoke the beginRun() method of the derived algorithm, and of any sub-algorithms which it creates.

virtual StatusCode IAlgorithm::sysEndRun | ( |  | ) | `[pure virtual]`

endRun method invoked by the framework.

This method is responsible for any endRun actions required by the framework itself. It will in turn invoke the endRun() method of the derived algorithm, and of any sub-algorithms which it creates.

virtual void IAlgorithm::resetExecuted | ( |  | ) | `[pure virtual]`

Reset the Algorithm executed state for the current event.

virtual StatusCode IAlgorithm::beginRun | ( |  | ) | `[pure virtual]`

Algorithm begin run.

This method is called at the beginning of the event loop.

virtual StatusCode IAlgorithm::endRun | ( |  | ) | `[pure virtual]`

Algorithm end run.

This method is called at the end of the event loop.

virtual void IAlgorithm::setExecuted | ( | bool | state | ) | `[pure virtual]`

Set the executed flag to the specified state.

virtual bool IAlgorithm::isEnabled | ( |  | ) | const`[pure virtual]`

Is this algorithm enabled or disabled?

virtual bool IAlgorithm::filterPassed | ( |  | ) | const`[pure virtual]`

Did this algorithm pass or fail its filter criterion for the last event?

virtual void IAlgorithm::setFilterPassed | ( | bool | state | ) | `[pure virtual]`

Set the filter passed flag to the specified state.

The documentation for this class was generated from the following file:

- /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v21r6/GaudiKernel/GaudiKernel/IAlgorithm.h