Gaudi::PluginService::Details Namespace Reference

Classes
class	Factory
	Class providing default factory functions. More...
class	Logger
	Simple logging class, just to provide a default implementation. More...
class	Registry
	In-memory database of the loaded factories. More...

Functions
GAUDIPS_API void *	getCreator (const std::string &id, const std::string &type)
	Function used to load a specific factory function. More...
template<typename F >
F	getCreator (const std::string &id)
	Convoluted implementation of getCreator with an embedded reinterpret_cast, used to avoid the warning. More...
GAUDIPS_API std::string	demangle (const std::type_info &id)
	Return a canonical name for type_info object (implementation borrowed from GaudiKernel/System). More...
template<typename T >
std::string	demangle ()
	Return a canonical name for the template argument. More...
GAUDIPS_API Logger &	logger ()
	Return the current logger instance. More...
GAUDIPS_API void	setLogger (Logger *logger)
	Set the logger instance to use. More...
std::string	demangle (const std::string &id)

Function Documentation

std::string Gaudi::PluginService::Details::demangle

(

const std::type_info &

id

)

Return a canonical name for type_info object (implementation borrowed from GaudiKernel/System).

Definition at line 151 of file PluginService.cpp.

{ return demangle( id.name() ); }

template<typename T >

std::string Gaudi::PluginService::Details::demangle ( )

inline

Return a canonical name for the template argument.

Definition at line 106 of file PluginServiceDetails.h.

      {
        return demangle( typeid( T ) );
      }

std::string Gaudi::PluginService::Details::demangle

(

const std::string &

id

)

Definition at line 136 of file PluginService.cpp.

      {
        int status;
        auto realname = std::unique_ptr<char, decltype( free )*>(
            abi::__cxa_demangle( id.c_str(), nullptr, nullptr, &status ), free );
        if ( !realname ) return id;
#if _GLIBCXX_USE_CXX11_ABI
        return std::regex_replace(
            realname.get(),
            std::regex{"std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > ?"},
            "std::string" );
#else
        return std::string{realname.get()};
#endif
      }

void * Gaudi::PluginService::Details::getCreator	(	const std::string &	id,
		const std::string &	type
	)

Function used to load a specific factory function.

Returns

the pointer to the factory function.

Definition at line 131 of file PluginService.cpp.

      {
        return Registry::instance().get( id, type );
      }

template<typename F >

F Gaudi::PluginService::Details::getCreator ( const std::string &  id )

inline

Convoluted implementation of getCreator with an embedded reinterpret_cast, used to avoid the warning.

warning: ISO C++ forbids casting between pointer-to-function and pointer-to-object

It is an ugly trick but works.
See:

• http://www.trilithium.com/johan/2004/12/problem-with-dlsym/
• http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_active.html#573
• http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#195

Definition at line 89 of file PluginServiceDetails.h.

      {
        union {
          void* src;
          F dst;
        } p2p;
        p2p.src = getCreator( id, typeid( F ).name() );
        return p2p.dst;
      }

Logger & Gaudi::PluginService::Details::logger

(

)

Return the current logger instance.

Definition at line 345 of file PluginService.cpp.

{ return *s_logger; }

void Gaudi::PluginService::Details::setLogger

(

Logger *

logger

)

Set the logger instance to use.

It must be a new instance and the ownership is passed to the function.

Definition at line 346 of file PluginService.cpp.

{ s_logger.reset( logger ); }