DLLClassManager Class Reference

#include <src/ApplicationMgr/DLLClassManager.h>

Inheritance diagram for DLLClassManager:

Collaboration diagram for DLLClassManager:

Public Member Functions
	DLLClassManager (IInterface *iface)
StatusCode	loadModule (const std::string &module, bool fireIncident=true) override
StatusCode	queryInterface (const InterfaceID &iid, void **pinterface) override
	implementation of IInterface::queryInterface More...
Public Member Functions inherited from implements< IClassManager >
void *	i_cast (const InterfaceID &tid) const override
	Implementation of IInterface::i_cast. More...
StatusCode	queryInterface (const InterfaceID &ti, void **pp) override
	Implementation of IInterface::queryInterface. More...
std::vector< std::string >	getInterfaceNames () const override
	Implementation of IInterface::getInterfaceNames. More...
	implements ()=default
	Default constructor. More...
	implements (const implements &)
	Copy constructor (zero the reference count) More...
implements &	operator= (const implements &)
	Assignment operator (do not touch the reference count). More...
unsigned long	addRef () override
	Reference Interface instance. More...
unsigned long	release () override
	Release Interface instance. More...
unsigned long	refCount () const override
	Current reference count. More...

Private Attributes
SmartIF< ISvcLocator >	m_svclocator
SmartIF< IMessageSvc >	m_msgsvc
SmartIF< IInterface >	m_pOuter

Additional Inherited Members
Public Types inherited from implements< IClassManager >
using	base_class = implements< Interfaces... >
	Typedef to this class. More...
using	extend_interfaces_base = extend_interfaces< Interfaces... >
	Typedef to the base of this class. More...
using	iids = typename extend_interfaces_base::ext_iids
Public Types inherited from extend_interfaces< Interfaces... >
using	ext_iids = typename Gaudi::interface_list_cat< typename Interfaces::ext_iids... >::type
	take union of the ext_iids of all Interfaces... More...
Protected Attributes inherited from implements< IClassManager >
std::atomic_ulong	m_refCount
	Reference counter. More...

Detailed Description

Definition at line 28 of file DLLClassManager.h.

Constructor & Destructor Documentation

DLLClassManager::DLLClassManager

(

IInterface *

iface

)

Definition at line 20 of file DLLClassManager.cpp.

{
  m_pOuter     = iface;
  m_svclocator = m_pOuter;

  assert( m_svclocator.isValid() );

  addRef(); // Initial count set to 1
}

Member Function Documentation

StatusCode DLLClassManager::loadModule ( const std::string &  module, bool  fireIncident = true  )

override

Definition at line 31 of file DLLClassManager.cpp.

{
  // Access the message service if not yet done already
  if ( !m_msgsvc ) m_msgsvc = m_svclocator;
  MsgStream log( m_msgsvc, "DllClassManager" );

  std::string mod = module == "" ? System::moduleNameFull() : module;
  if ( module == "NONE" ) return StatusCode::SUCCESS;

  void*      libHandle = nullptr;
  StatusCode status    = StatusCode::FAILURE;
  try {
    status = System::loadDynamicLib( module, &libHandle ) ? StatusCode::SUCCESS : StatusCode::FAILURE;
  } catch ( const std::exception& excpt ) {
    if ( m_msgsvc ) {
      log << MSG::ERROR << "Exception whilst loading " << module << " : " << excpt.what() << endmsg;
    }
    status = StatusCode::FAILURE;
  }

  if ( status.isFailure() ) {
    // DLL library not loaded
    log << MSG::ERROR << "Could not load module " << module << endmsg;
    log << MSG::ERROR << "System Error: " << System::getLastErrorString() << endmsg;
    return StatusCode::FAILURE;
  }
  // FIXME this is a hack to avoid a very early call to moduleLoad from
  // FIXME AppMgr::i_startup
  if ( fireIncident && !module.empty() ) {
    // now fire ModuleLoadedIncident
    const bool CREATEIF( true );
    auto       pIncidentSvc = m_svclocator->service<IIncidentSvc>( "IncidentSvc", CREATEIF );
    if ( !pIncidentSvc ) {
      log << MSG::FATAL << "Can not locate IncidentSvc" << endmsg;
      throw GaudiException( "Error retrieving IncidentSvc", "DLLClassManager::DLLClassManager", StatusCode::FAILURE );
    }
    pIncidentSvc->fireIncident( ModuleLoadedIncident( "DLLClassManager", module ) );
  }

  return StatusCode::SUCCESS;
}

StatusCode DLLClassManager::queryInterface ( const InterfaceID &  iid, void **  pinterface  )

override

implementation of IInterface::queryInterface

Definition at line 74 of file DLLClassManager.cpp.

{
  // try local interfaces
  StatusCode sc = base_class::queryInterface( iid, pinterface );
  if ( sc.isSuccess() ) return sc;
  // fall back on the owner
  return m_pOuter->queryInterface( iid, pinterface );
}

Member Data Documentation

SmartIF<IMessageSvc> DLLClassManager::m_msgsvc

private

Definition at line 42 of file DLLClassManager.h.

SmartIF<IInterface> DLLClassManager::m_pOuter

private

Definition at line 43 of file DLLClassManager.h.

SmartIF<ISvcLocator> DLLClassManager::m_svclocator

private

Definition at line 41 of file DLLClassManager.h.

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

• GaudiCoreSvc/src/ApplicationMgr/DLLClassManager.h
• GaudiCoreSvc/src/ApplicationMgr/DLLClassManager.cpp