| The Gaudi Framework v32r1 (f65d50dc)

DLLClassManager.cpp
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1 // Include files
2 #include "DLLClassManager.h"
3 #include "GaudiKernel/GaudiException.h"
4 #include "GaudiKernel/IAlgManager.h"
5 #include "GaudiKernel/IIncidentSvc.h"
6 #include "GaudiKernel/IMessageSvc.h"
7 #include "GaudiKernel/IService.h"
8 #include "GaudiKernel/ISvcLocator.h"
9 #include "GaudiKernel/ISvcManager.h"
10 #include "GaudiKernel/ModuleIncident.h"
11 #include "GaudiKernel/MsgStream.h"
12 #include "GaudiKernel/System.h"
13
14 #include "GaudiKernel/IAlgorithm.h"
15
16 #include <cassert>
17 #include <iostream>
18
19 // default creator
20 DLLClassManager::DLLClassManager( IInterface* iface ) {
21 m_pOuter = iface;
22 m_svclocator = m_pOuter;
23
24 assert( m_svclocator.isValid() );
25
26 addRef(); // Initial count set to 1
27 }
28
29 // implementation of IClassManager::loadModule
30 StatusCode DLLClassManager::loadModule( const std::string& module, bool fireIncident ) {
31 // Access the message service if not yet done already
32 if ( !m_msgsvc ) m_msgsvc = m_svclocator;
33 MsgStream log( m_msgsvc, "DllClassManager" );
34
35 std::string mod = module == "" ? System::moduleNameFull() : module;
36 if ( module == "NONE" ) return StatusCode::SUCCESS;
37
38 void* libHandle = nullptr;
39 StatusCode status = StatusCode::FAILURE;
40 try {
41 status = System::loadDynamicLib( module, &libHandle ) ? StatusCode::SUCCESS : StatusCode::FAILURE;
42 } catch ( const std::exception& excpt ) {
43 if ( m_msgsvc ) { log << MSG::ERROR << "Exception whilst loading " << module << " : " << excpt.what() << endmsg; }
44 status = StatusCode::FAILURE;
45 }
46
47 if ( status.isFailure() ) {
48 // DLL library not loaded
49 log << MSG::ERROR << "Could not load module " << module << endmsg;
50 log << MSG::ERROR << "System Error: " << System::getLastErrorString() << endmsg;
51 return StatusCode::FAILURE;
52 }
53 // FIXME this is a hack to avoid a very early call to moduleLoad from
54 // FIXME AppMgr::i_startup
55 if ( fireIncident && !module.empty() ) {
56 // now fire ModuleLoadedIncident
57 const bool CREATEIF( true );
58 auto pIncidentSvc = m_svclocator->service<IIncidentSvc>( "IncidentSvc", CREATEIF );
59 if ( !pIncidentSvc ) {
60 log << MSG::FATAL << "Can not locate IncidentSvc" << endmsg;
61 throw GaudiException( "Error retrieving IncidentSvc", "DLLClassManager::DLLClassManager", StatusCode::FAILURE );
62 }
63 pIncidentSvc->fireIncident( ModuleLoadedIncident( "DLLClassManager", module ) );
64 }
65
66 return StatusCode::SUCCESS;
67 }
68
69 // implementation of IInterface::queryInterface
70 StatusCode DLLClassManager::queryInterface( const InterfaceID& iid, void** pinterface ) {
71 // try local interfaces
72 StatusCode sc = base_class::queryInterface( iid, pinterface );
73 if ( sc.isSuccess() ) return sc;
74 // fall back on the owner
75 return m_pOuter->queryInterface( iid, pinterface );
76 }
System.h
MsgStream
Definition of the MsgStream class used to transmit messages.
Definition: MsgStream.h:24
std::string::empty
T empty(T... args)
GaudiException
Define general base for Gaudi exception.
Definition: GaudiException.h:21
DLLClassManager::loadModule
StatusCode loadModule(const std::string &module, bool fireIncident=true) override
Definition: DLLClassManager.cpp:30
MsgStream.h
IAlgorithm.h
System::moduleNameFull
GAUDI_API const std::string & moduleNameFull()
Get the full name of the (executable/DLL) file.
Definition: ModuleInfo.cpp:77
Gaudi.CommonGaudiConfigurables.mod
mod
Definition: CommonGaudiConfigurables.py:22
SmartIF::isValid
bool isValid() const
Allow for check if smart pointer is valid.
Definition: SmartIF.h:62
StatusCode::SUCCESS
constexpr static const auto SUCCESS
Definition: StatusCode.h:85
ISvcManager.h
std::string
STL class.
MSG::FATAL
Definition: IMessageSvc.h:15
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:76
InterfaceID
Interface ID class.
Definition: IInterface.h:29
std::exception::what
T what(T... args)
IIncidentSvc.h
DLLClassManager::m_msgsvc
SmartIF< IMessageSvc > m_msgsvc
Definition: DLLClassManager.h:41
implements< IClassManager >::addRef
unsigned long addRef() override
Reference Interface instance.
Definition: implements.h:38
StatusCode
This class is used for returning status codes from appropriate routines.
Definition: StatusCode.h:50
GaudiException.h
IInterface
Definition of the basic interface.
Definition: IInterface.h:244
ModuleLoadedIncident
fired when a module (DLL) is loaded
Definition: ModuleIncident.h:43
IMessageSvc.h
StatusCode::isSuccess
bool isSuccess() const
Definition: StatusCode.h:267
std::exception
STL class.
IService.h
DLLClassManager::queryInterface
StatusCode queryInterface(const InterfaceID &iid, void **pinterface) override
implementation of IInterface::queryInterface
Definition: DLLClassManager.cpp:70
StatusCode::FAILURE
constexpr static const auto FAILURE
Definition: StatusCode.h:86
DLLClassManager.h
MSG::ERROR
Definition: IMessageSvc.h:15
IAlgManager.h
DLLClassManager::DLLClassManager
DLLClassManager(IInterface *iface)
Definition: DLLClassManager.cpp:20
ModuleIncident.h
DLLClassManager::m_svclocator
SmartIF< ISvcLocator > m_svclocator
Definition: DLLClassManager.h:40
StatusCode::isFailure
bool isFailure() const
Definition: StatusCode.h:130
System::getLastErrorString
GAUDI_API const std::string getLastErrorString()
Get last system error as string.
Definition: System.cpp:262
implements::queryInterface
StatusCode queryInterface(const InterfaceID &ti, void **pp) override
Implementation of IInterface::queryInterface.
Definition: implements.h:20
DLLClassManager::m_pOuter
SmartIF< IInterface > m_pOuter
Definition: DLLClassManager.h:42
ISvcLocator.h
endmsg
MsgStream & endmsg(MsgStream &s)
MsgStream Modifier: endmsg. Calls the output method of the MsgStream.
Definition: MsgStream.h:192
IIncidentSvc
The interface implemented by the IncidentSvc service.
Definition: IIncidentSvc.h:23
Gaudi.Configuration.log
log
Definition: Configuration.py:13
System::loadDynamicLib
GAUDI_API unsigned long loadDynamicLib(const std::string &name, ImageHandle *handle)
Load dynamic link library.
Definition: System.cpp:135
IInterface::queryInterface
virtual StatusCode queryInterface(const InterfaceID &ti, void **pp)=0
Set the void** to the pointer to the requested interface of the instance.