ActsTrk::JSONDeviceMagFieldProviderSvc Class Reference

Service providing magnetic field description from JSON files. More...

#include <JSONDeviceMagFieldProviderSvc.h>

Inheritance diagram for ActsTrk::JSONDeviceMagFieldProviderSvc:

Collaboration diagram for ActsTrk::JSONDeviceMagFieldProviderSvc:

Public Member Functions
virtual StatusCode	initialize () override
	Function initializing and executing the file loading.
MsgStream &	msg () const
bool	msgLvl (const MSG::Level lvl) const

Private Attributes
ServiceHandle< StoreGateSvc >	m_detStore {this, "DetectorStore", "StoreGateSvc/DetectorStore"}
ToolHandle< ActsTrk::IDeviceMagFieldProviderTool >	m_deviceFieldProviderTool
	The device magnetic field provider tool.
The input JSON file names, path resolved with PathResolver
Gaudi::Property< std::string >	m_magFieldFile
The output object names
Gaudi::Property< std::string >	m_hostMagFieldObjectName
Gaudi::Property< std::string >	m_deviceMagFieldObjectName

Detailed Description

Service providing magnetic field description from JSON files.

This service loads magnetic field data from JSON files, which are needed for executing track parameter estimation and track reconstruction on GPU.

All objects are recorded to detector store as pointers to device objects. Note that the different implementations require different tools to make the device copy.

Author

Neža Ribarič neza..nosp@m.riba.nosp@m.ric@c.nosp@m.ern..nosp@m.ch

Definition at line 29 of file JSONDeviceMagFieldProviderSvc.h.

Member Function Documentation

initialize()

StatusCode ActsTrk::JSONDeviceMagFieldProviderSvc::initialize ( )

overridevirtual

Function initializing and executing the file loading.

Definition at line 15 of file JSONDeviceMagFieldProviderSvc.cxx.

{
  ATH_MSG_DEBUG("Initializing  device magnetic field provider service ");
 
  ATH_CHECK(m_deviceFieldProviderTool.retrieve());
  ATH_CHECK(m_detStore.retrieve());
  
  traccc::magnetic_field hostMagField;
  
  if (m_magFieldFile.value().empty()) {
    ATH_MSG_FATAL("MagFieldFile is empty!");
    return StatusCode::FAILURE;
  }
 
  ATH_MSG_INFO("Reading mag field from file: " << PathResolverFindCalibFile(m_magFieldFile.value()));
 
  // Construct host magnetic field
  ATH_MSG_INFO("Loading traccc magnetic field");
  traccc::io::read_magnetic_field(
        hostMagField,
        PathResolverFindCalibFile(m_magFieldFile.value()));
 
  ATH_MSG_INFO("Magnetic field built from file"); 
 
  // Construct device field
  traccc::magnetic_field deviceMagField = m_deviceFieldProviderTool->getDeviceMagneticField(hostMagField);
 
  // Record host and device objects
  constexpr bool allowMods = false;
  ATH_CHECK(m_detStore->record(
      std::make_unique<traccc::magnetic_field>(std::move(hostMagField)),
      m_hostMagFieldObjectName.value(), allowMods));
 
  ATH_CHECK(m_detStore->record(
      std::make_unique<traccc::magnetic_field>(std::move(deviceMagField)),
      m_deviceMagFieldObjectName.value(), allowMods));
  
 
  ATH_MSG_DEBUG("Successfully initialized");
  return StatusCode::SUCCESS;
}

msg()

MsgStream & AthCommonMsg< Service >::msg ( ) const

inlineinherited

Definition at line 24 of file AthCommonMsg.h.

                                {
    return this->msgStream();
  }

msgLvl()

bool AthCommonMsg< Service >::msgLvl ( const MSG::Level lvl ) const

inlineinherited

Definition at line 30 of file AthCommonMsg.h.

                                               {
    return this->msgLevel(lvl);
  }

Member Data Documentation

m_detStore

ServiceHandle<StoreGateSvc> ActsTrk::JSONDeviceMagFieldProviderSvc::m_detStore {this, "DetectorStore", "StoreGateSvc/DetectorStore"}

private

Definition at line 41 of file JSONDeviceMagFieldProviderSvc.h.

{this, "DetectorStore", "StoreGateSvc/DetectorStore"};

m_deviceFieldProviderTool

ToolHandle<ActsTrk::IDeviceMagFieldProviderTool> ActsTrk::JSONDeviceMagFieldProviderSvc::m_deviceFieldProviderTool

private

Initial value:

{
        this, "DeviceMagFieldProviderTool", "",
        "The device magnetic field provider tool"}

The device magnetic field provider tool.

Definition at line 44 of file JSONDeviceMagFieldProviderSvc.h.

                                                                            {
        this, "DeviceMagFieldProviderTool", "",
        "The device magnetic field provider tool"};    

m_deviceMagFieldObjectName

Gaudi::Property<std::string> ActsTrk::JSONDeviceMagFieldProviderSvc::m_deviceMagFieldObjectName

private

Initial value:

{
        this, "DeviceMagFieldObjectName", "",
        "Traccc device magnetic field object"}

Definition at line 60 of file JSONDeviceMagFieldProviderSvc.h.

                                                       {
        this, "DeviceMagFieldObjectName", "",
        "Traccc device magnetic field object"};    

m_hostMagFieldObjectName

Gaudi::Property<std::string> ActsTrk::JSONDeviceMagFieldProviderSvc::m_hostMagFieldObjectName

private

Initial value:

{
        this, "HostMagFieldObjectName", "",
        "Traccc host magnetic field object"}

Definition at line 57 of file JSONDeviceMagFieldProviderSvc.h.

                                                     {
        this, "HostMagFieldObjectName", "",
        "Traccc host magnetic field object"};  

m_magFieldFile

Gaudi::Property<std::string> ActsTrk::JSONDeviceMagFieldProviderSvc::m_magFieldFile

private

Initial value:

{
        this, "MagFieldFile", "",
        "Magnetic field JSON file"}

Definition at line 50 of file JSONDeviceMagFieldProviderSvc.h.

                                           {
        this, "MagFieldFile", "",
        "Magnetic field JSON file"};   

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

• JSONDeviceMagFieldProviderSvc.h
• JSONDeviceMagFieldProviderSvc.cxx