Service implementing xAODMaker::IROOTHeaderLoaderSvc. More...

#include <ROOTHeaderLoaderSvc.h>

Inheritance diagram for xAODMaker::ROOTHeaderLoaderSvc:

Collaboration diagram for xAODMaker::ROOTHeaderLoaderSvc:

Public Member Functions
virtual StatusCode	initialize () override
	Function initialising the service. More...

Implementation of the @c xAODMaker::IEventFormatSvc interface
virtual StatusCode	loadHeader (const std::string &headerName) const override
	(Force-)Load one particular header More...

Private Attributes
Gaudi::Property< std::vector< std::string > >	m_headerNames
	Names of the headers to auto-load during initialisation. More...

Detailed Description

Service implementing xAODMaker::IROOTHeaderLoaderSvc.

The service simply relies on TROOT::ProcessLine(...) to execute '#include "headerName.h"' commands. Forcing ROOT to interpret those headers during the job's initialisation. Allowing us to work around ATR-21753 / ROOT-10940.

Author: Attila Krasznahorkay Attil.nosp@m.a.Kr.nosp@m.aszna.nosp@m.hork.nosp@m.ay@ce.nosp@m.rn.c.nosp@m.h

Definition at line 30 of file ROOTHeaderLoaderSvc.h.

Member Function Documentation

◆ initialize()

StatusCode xAODMaker::ROOTHeaderLoaderSvc::initialize ( )

overridevirtual

Function initialising the service.

Definition at line 15 of file ROOTHeaderLoaderSvc.cxx.

                                               {
  
       // Load all the configured headers.
       for( const std::string& headerName : m_headerNames.value() ) {
          ATH_MSG_INFO( "Loading header \"" << headerName << "\"" );
          ATH_CHECK( loadHeader( headerName ) );
       }
  
       // Return gracefully.
       return StatusCode::SUCCESS;
    }

◆ loadHeader()

StatusCode xAODMaker::ROOTHeaderLoaderSvc::loadHeader ( const std::string & headerName ) const

overridevirtual

(Force-)Load one particular header

Definition at line 28 of file ROOTHeaderLoaderSvc.cxx.

                                                                       {
  
       // Load the requested header.
       Int_t errorCode = 0;
       gROOT->ProcessLine( TString::Format( "#include \"%s\"",
                                            headerName.c_str() ),
                           &errorCode );
  
       // Check if the call succeeded.
       if( errorCode != TInterpreter::kNoError ) {
          ATH_MSG_FATAL( "Failed to load header \"" << headerName << "\"" );
          return StatusCode::FAILURE;
       }
  
       // Return gracefully.
       return StatusCode::SUCCESS;
    }

Member Data Documentation

◆ m_headerNames

Gaudi::Property< std::vector< std::string > > xAODMaker::ROOTHeaderLoaderSvc::m_headerNames

private

Initial value:

{ this,
         "HeaderNames", {},
         "Names of the headers to auto-load during initialisation" }

Names of the headers to auto-load during initialisation.

Definition at line 51 of file ROOTHeaderLoaderSvc.h.

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