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Public Member Functions | List of all members
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:
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Collaboration diagram for Gaudi::BootSvcLocator:
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## Public Member Functions
| BootSvcLocator ()=default
| ~BootSvcLocator () override=default
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...
| ~implements () override=default
| Virtual destructor. 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...
Public Member Functions inherited from extend_interfaces< Interfaces... >
| ~extend_interfaces () override=default
| Virtual destructor. 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.

## Constructor & Destructor Documentation

Gaudi::BootSvcLocator::BootSvcLocator | ( |  | ) |
| default

Gaudi::BootSvcLocator::~BootSvcLocator | ( |  | ) |
| override default

## Member Function Documentation

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

Definition at line 224 of file Bootstrap.cpp.

225 {
226 return s_appmgrInstance && s_svclocInstance->existsService( name );
227 }
ISvcLocator::existsService
virtual bool existsService(const std::string &name) const =0
Check the existence of a service given a service name.

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

Definition at line 196 of file Bootstrap.cpp.

198 {
199 StatusCode sc = StatusCode::FAILURE;
200 if ( s_appmgrInstance ) {
201 sc = s_svclocInstance->getService( typeName, iid, pinterface );
202 } else {
203 pinterface = s_bootInterface.get();
204 }
205 return sc;
206 }
SmartIF::get
TYPE * get() const
Get interface pointer.
Definition: SmartIF.h:82
StatusCode
This class is used for returning status codes from appropriate routines.
Definition: StatusCode.h:26
ISvcLocator::getService
virtual StatusCode getService(const Gaudi::Utils::TypeNameString &typeName, IService *&svc, const bool createIf=true)
Get a reference to the service given a service name.
Definition: ISvcLocator.h:36
StatusCode::FAILURE
Definition: StatusCode.h:29

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

Definition at line 207 of file Bootstrap.cpp.

209 {
210 StatusCode sc = StatusCode::FAILURE;
211 if ( s_appmgrInstance ) {
212 sc = s_svclocInstance->getService( typeName, svc, createIf );
213 } else {
214 svc = s_bootService.get();
215 }
216 return sc;
217 }
SmartIF::get
TYPE * get() const
Get interface pointer.
Definition: SmartIF.h:82
StatusCode
This class is used for returning status codes from appropriate routines.
Definition: StatusCode.h:26
ISvcLocator::getService
virtual StatusCode getService(const Gaudi::Utils::TypeNameString &typeName, IService *&svc, const bool createIf=true)
Get a reference to the service given a service name.
Definition: ISvcLocator.h:36
StatusCode::FAILURE
Definition: StatusCode.h:29

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

Definition at line 220 of file Bootstrap.cpp.

221 {
222 return s_appmgrInstance ? s_svclocInstance->getServices() : s_bootServices;
223 }
ISvcLocator::getServices
virtual const std::list< IService * > & getServices() const =0
Get a reference to a service and create it if it does not exists.

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 229 of file Bootstrap.cpp.

230 {
231 return s_appmgrInstance ? s_svclocInstance->service( typeName, createIf ) : s_bootService;
232 }
ISvcLocator::service
StatusCode service(const Gaudi::Utils::TypeNameString &name, T *&svc, bool createIf=true)
Templated method to access a service by name.
Definition: ISvcLocator.h:79

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

- GaudiKernel/src/Lib/Bootstrap.cpp