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DLLClassManager.cpp
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1 // Include files
2 #include "GaudiKernel/GaudiException.h"
3 #include "GaudiKernel/IService.h"
4 #include "GaudiKernel/ISvcLocator.h"
5 #include "GaudiKernel/IAlgManager.h"
6 #include "GaudiKernel/ISvcManager.h"
7 #include "GaudiKernel/IIncidentSvc.h"
8 #include "GaudiKernel/ModuleIncident.h"
9 #include "GaudiKernel/MsgStream.h"
10 #include "DLLClassManager.h"
11 #include "GaudiKernel/System.h"
12
13 #include "GaudiKernel/IAlgorithm.h"
14
15 #include <iostream>
16 #include <cassert>
17
18 // default creator
19 DLLClassManager::DLLClassManager( IInterface* iface ) {
20 m_pOuter = iface;
21 m_svclocator = m_pOuter;
22
23 assert(m_svclocator.isValid());
24
25 addRef(); // Initial count set to 1
26 }
27
28 // implementation of IClassManager::loadModule
29 StatusCode DLLClassManager::loadModule( const std::string& module,
30 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 {
42 status = System::loadDynamicLib( module, &libHandle);
43 }
44 catch ( const std::exception & excpt )
45 {
46 if ( m_msgsvc )
47 {
48 log << MSG::ERROR << "Exception whilst loading " << module << " : " << excpt.what() << endmsg;
49 }
50 status = StatusCode::FAILURE;
51 }
52
53 if( status.isFailure() ) {
54 // DLL library not loaded
55 log << MSG::ERROR << "Could not load module " << module << endmsg;
56 log << MSG::ERROR << "System Error: " << System::getLastErrorString() << endmsg;
57 return StatusCode::FAILURE;
58 }
59 //FIXME this is a hack to avoid a very early call to moduleLoad from
60 //FIXME AppMgr::i_startup
61 if (fireIncident && !module.empty()) {
62 //now fire ModuleLoadedIncident
63 const bool CREATEIF(true);
64 auto pIncidentSvc = m_svclocator->service<IIncidentSvc>("IncidentSvc", CREATEIF);
65 if( !pIncidentSvc ) {
66 log << MSG::FATAL << "Can not locate IncidentSvc" << endmsg;
67 throw GaudiException("Error retrieving IncidentSvc",
68 "DLLClassManager::DLLClassManager", StatusCode::FAILURE);
69 }
70 pIncidentSvc->fireIncident(ModuleLoadedIncident("DLLClassManager",
71 module) );
72 }
73
74 return StatusCode::SUCCESS;
75 }
76
77 // implementation of IInterface::queryInterface
78 StatusCode DLLClassManager::queryInterface(const InterfaceID& iid, void** pinterface) {
79 // try local interfaces
80 StatusCode sc = base_class::queryInterface(iid, pinterface);
81 if (sc.isSuccess()) return sc;
82 // fall back on the owner
83 return m_pOuter->queryInterface(iid, pinterface);
84 }
System.h
MsgStream
Definition of the MsgStream class used to transmit messages.
Definition: MsgStream.h:24
StatusCode::SUCCESS
Definition: StatusCode.h:30
std::string::empty
T empty(T...args)
GaudiException
Define general base for Gaudi exception.
Definition: GaudiException.h:23
DLLClassManager::loadModule
StatusCode loadModule(const std::string &module, bool fireIncident=true) override
Definition: DLLClassManager.cpp:29
StatusCode::FAILURE
Definition: StatusCode.h:29
MsgStream.h
IAlgorithm.h
StatusCode::isSuccess
bool isSuccess() const
Test for a status code of SUCCESS.
Definition: StatusCode.h:74
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
StatusCode::isFailure
bool isFailure() const
Test for a status code of FAILURE.
Definition: StatusCode.h:84
ISvcManager.h
std::string
STL class.
MSG::FATAL
Definition: IMessageSvc.h:22
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:78
InterfaceID
Interface ID class.
Definition: IInterface.h:30
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:44
StatusCode
This class is used for returning status codes from appropriate routines.
Definition: StatusCode.h:26
GaudiException.h
IInterface
Definition of the basic interface.
Definition: IInterface.h:234
ModuleLoadedIncident
fired when a module (DLL) is loaded
Definition: ModuleIncident.h:42
std::exception
STL class.
IService.h
DLLClassManager::queryInterface
StatusCode queryInterface(const InterfaceID &iid, void **pinterface) override
implementation of IInterface::queryInterface
Definition: DLLClassManager.cpp:78
SmartIF::isValid
bool isValid() const
Allow for check if smart pointer is valid.
Definition: SmartIF.h:62
DLLClassManager.h
MSG::ERROR
Definition: IMessageSvc.h:21
IAlgManager.h
DLLClassManager::DLLClassManager
DLLClassManager(IInterface *iface)
Definition: DLLClassManager.cpp:19
ModuleIncident.h
DLLClassManager::m_svclocator
SmartIF< ISvcLocator > m_svclocator
Definition: DLLClassManager.h:40
System::getLastErrorString
GAUDI_API const std::string getLastErrorString()
Get last system error as string.
Definition: System.cpp:256
implements::queryInterface
StatusCode queryInterface(const InterfaceID &ti, void **pp) override
Implementation of IInterface::queryInterface.
Definition: implements.h:22
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:244
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:126
IInterface::queryInterface
virtual StatusCode queryInterface(const InterfaceID &ti, void **pp)=0
Set the void** to the pointer to the requested interface of the instance.