Gaudi::BootSvcLocator Class Reference

A dual-stage boostrap mechanism is used to ensure an orderly startup of the ApplicationMgr. More...

Inheritance diagram for Gaudi::BootSvcLocator:

Collaboration diagram for Gaudi::BootSvcLocator:

Public Member Functions
StatusCode	getService (const Gaudi::Utils::TypeNameString &typeName, const InterfaceID &iid, IInterface *&pinterface) override
StatusCode	getService (const Gaudi::Utils::TypeNameString &typeName, IService *&svc, const bool createIf=true) override
const std::list< IService * > &	getServices () const override
bool	existsService (const std::string &name) const override
SmartIF< IService > &	service (const Gaudi::Utils::TypeNameString &typeName, const bool createIf=true) override
	Returns a smart pointer to a service. More...
Public Member Functions inherited from implements< ISvcLocator >
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...

Additional Inherited Members
Public Types inherited from implements< ISvcLocator >
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< ISvcLocator >
std::atomic_ulong	m_refCount
	Reference counter. More...

Detailed Description

A dual-stage boostrap mechanism is used to ensure an orderly startup of the ApplicationMgr.

If this function is called before the singleton ApplicationMgr instance exists, a BootstrapAppMgr singleton instance is created. This responds to any subsequent requests for services by returning StatusCode::FAILURE, unless the ApplicationMgr singleton instance has been created in the interim. In this case, the BootstrapAppMgr forwards the request to the ApplicationMgr instance. The motivation for this is to handle static object instances where the constructor attempts to locate services and would otherwise instantiate the ApplicationMgr instance in an unorderly manner. This logic requires that the ApplicationMgr instance is created explicitly.

Definition at line 40 of file Bootstrap.cpp.

Member Function Documentation

bool Gaudi::BootSvcLocator::existsService ( const std::string &  name ) const

override

Definition at line 221 of file Bootstrap.cpp.

{
  return s_appmgrInstance && s_svclocInstance->existsService( name );
}

StatusCode Gaudi::BootSvcLocator::getService ( const Gaudi::Utils::TypeNameString &  typeName, const InterfaceID &  iid, IInterface *&  pinterface  )

override

Definition at line 193 of file Bootstrap.cpp.

{
  StatusCode sc = StatusCode::FAILURE;
  if ( s_appmgrInstance ) {
    sc = s_svclocInstance->getService( typeName, iid, pinterface );
  } else {
    pinterface = s_bootInterface.get();
  }
  return sc;
}

StatusCode Gaudi::BootSvcLocator::getService ( const Gaudi::Utils::TypeNameString &  typeName, IService *&  svc, const bool  createIf = true  )

override

Definition at line 204 of file Bootstrap.cpp.

{
  StatusCode sc = StatusCode::FAILURE;
  if ( s_appmgrInstance ) {
    sc = s_svclocInstance->getService( typeName, svc, createIf );
  } else {
    svc = s_bootService.get();
  }
  return sc;
}

const std::list< IService * > & Gaudi::BootSvcLocator::getServices ( ) const

override

Definition at line 217 of file Bootstrap.cpp.

{
  return s_appmgrInstance ? s_svclocInstance->getServices() : s_bootServices;
}

SmartIF< IService > & Gaudi::BootSvcLocator::service ( const Gaudi::Utils::TypeNameString &  typeName, const bool  createIf = true  )

override

Returns a smart pointer to a service.

Definition at line 226 of file Bootstrap.cpp.

{
  return s_appmgrInstance ? s_svclocInstance->service( typeName, createIf ) : s_bootService;
}

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

• GaudiKernel/src/Lib/Bootstrap.cpp