Event selector. More...

#include <JEventSelector.hh>

Inheritance diagram for JRECONSTRUCTION::JEventSelector:

Public Types
typedef JReturn_t(*	pF )(Args...)
	Type definition of method. More...

Public Member Functions
	JEventSelector ()
	Default constructor. More...

JReturn_t	operator() (Args...args) const
	Function operation. More...

bool	is_valid () const
	Check validity of function. More...

void	reset ()
	Reset function adaptor helper. More...

void	set (JReturn_t(*)(Args...)pf)
	Set function. More...

void	get (const char *symbol)
	Get function with given name according to specific protocol. More...

bool	is_open () const
	Check if shared library file is open. More...

void	open (const char *file_name)
	Open file. More...

void	close ()
	Close file. More...

void	load (const std::string &libso, const std::string &symbol)
	Load function from shared library. More...

void	reload ()
	Reload function from shared library. More...

void	initialise ()
	Initialise counter. More...

void	attach (const JSharedCounter &object)
	Attach this counter to given shared counter object. More...

bool	detach ()
	Detach. More...

const int	getCount ()
	Get count. More...

Static Public Member Functions
static bool	select (const JDAQEvent &tev, const JEvt &evt, const Evt *const pE)
	Default event selection. More...

Static Public Attributes
static const char	SEPARATOR
	Separation character between library file name and function name. More...

Protected Attributes
void *	handle

JReturn_t(*)(Args...)	function

std::string	libso

std::string	symbol

int *	counter

Detailed Description

Event selector.

The default constructor will select all events.
A different method can dynamically be loaded from a shared library via JEEP::JFunctionAdaptor.

Definition at line 30 of file JEventSelector.hh.

Member Typedef Documentation

template<class JReturn_t = void, class... Args>

typedef JReturn_t(* JEEP::JFunctionAdaptor< JReturn_t, Args >::pF)(Args...)

inherited

Type definition of method.

Definition at line 307 of file JFunctionAdaptor.hh.

Constructor & Destructor Documentation

JRECONSTRUCTION::JEventSelector::JEventSelector ( )

inline

Default constructor.

Definition at line 50 of file JEventSelector.hh.

     {
       this->function =  select;
       this->symbol   = "select";
     }

Member Function Documentation

static bool JRECONSTRUCTION::JEventSelector::select	(	const JDAQEvent &	tev,
		const JEvt &	evt,
		const Evt *const	pE
	)

inlinestatic

Default event selection.

Parameters

tev	DAQ event
evt	input event
pE	pointer to Monte Carlo event

Returns: true

Definition at line 41 of file JEventSelector.hh.

     {
       return true;
     }

template<class JReturn_t = void, class... Args>

JReturn_t JEEP::JFunctionAdaptor< JReturn_t, Args >::operator() ( Args... args ) const

inlineinherited

Function operation.

Parameters

args arguments

Returns: return value

Definition at line 346 of file JFunctionAdaptor.hh.

     {
       return this->function(args...);
     }

bool JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::is_valid ( ) const

inlineinherited

Check validity of function.

Returns: true if valid function; else false

Definition at line 56 of file JFunctionAdaptor.hh.

     {
       return (function != NULL);
     }

void JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::reset ( )

inlineinherited

Reset function adaptor helper.

Definition at line 65 of file JFunctionAdaptor.hh.

     {
       if (detach()) {
         close();
       }
       
       function = NULL;
     }

void JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::set ( JReturn_t(*)(Args...) pf )

inlineinherited

Set function.

Parameters

pf	pointer to function

Definition at line 80 of file JFunctionAdaptor.hh.

     {
       reset();
       
       function = pf;
     }

void JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::get ( const char * symbol )

inlineinherited

Get function with given name according to specific protocol.

Parameters

symbol function name

Definition at line 93 of file JFunctionAdaptor.hh.

     {
       function = NULL;
 
       if (handle != NULL) {
 
         dlerror();                 // reset errors
 
         function = (__pF__) dlsym(handle, symbol);
 
         const char* error = dlerror();
 
         if (error != NULL) {
           THROW(JFileReadException, error);
         }
 
       } else {
 
         THROW(JFileReadException, "Invalid handle.");
       }
     }

bool JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::is_open ( ) const

inlineinherited

Check if shared library file is open.

Returns: true if open; else false

Definition at line 121 of file JFunctionAdaptor.hh.

     {
       return (handle != NULL);
     }

void JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::open ( const char * file_name )

inlineinherited

Open file.

Parameters

file_name file name

Definition at line 132 of file JFunctionAdaptor.hh.

     {
       reset();
       
       handle = dlopen(file_name, RTLD_LOCAL | RTLD_LAZY);
 
       if (!handle) {
         THROW(JFileOpenException, dlerror());
       }
 
       initialise();
     }

void JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::close ( )

inlineinherited

Close file.

Note that the file should remain open as long as the library function is used.

Definition at line 151 of file JFunctionAdaptor.hh.

     {
       if (handle != NULL) {
         dlclose(handle);
         dlclose(handle);
       }
 
       handle = NULL;
     }

void JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::load	(	const std::string &	libso,
		const std::string &	symbol
	)

inlineinherited

Load function from shared library.

Parameters

libso	file name
symbol	function name

Definition at line 168 of file JFunctionAdaptor.hh.

     {
       this->libso  = libso;
       this->symbol = symbol;
 
       reload();
     }

void JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::reload ( )

inlineinherited

Reload function from shared library.

Definition at line 180 of file JFunctionAdaptor.hh.

     {
       open(libso.c_str());
 
       get(symbol.c_str());
     }

void JLANG::JSharedCounter::initialise ( )

inlineinherited

Initialise counter.

Definition at line 33 of file JSharedCounter.hh.

     {
       detach();
 
       counter = new int(1);
     }

void JLANG::JSharedCounter::attach ( const JSharedCounter & object )

inlineinherited

Attach this counter to given shared counter object.

Parameters

object shared counter

Definition at line 46 of file JSharedCounter.hh.

     {
       detach();
 
       counter = object.counter;
 
       if (counter != NULL) {
         ++(*counter);
       }
     }

bool JLANG::JSharedCounter::detach ( )

inlineinherited

Detach.

Returns: true if counter at zero; else false

Definition at line 63 of file JSharedCounter.hh.

     {
       if (counter != NULL) {
 
         if (--(*counter) == 0) {
 
           delete counter;
 
           counter = NULL;
 
           return true;
         }
 
         counter = NULL;
       }
 
       return false;
     }

const int JLANG::JSharedCounter::getCount ( )

inlineinherited

Get count.

Returns: count

Definition at line 88 of file JSharedCounter.hh.

     {
       return (counter != NULL ? *counter : 0);
     }

Member Data Documentation

const char JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::SEPARATOR

staticinherited

Separation character between library file name and function name.

Definition at line 39 of file JFunctionAdaptor.hh.

void* JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::handle

protectedinherited

Definition at line 290 of file JFunctionAdaptor.hh.

JReturn_t(*)(Args...) JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::function

protectedinherited

Definition at line 291 of file JFunctionAdaptor.hh.

std::string JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::libso

protectedinherited

Definition at line 292 of file JFunctionAdaptor.hh.

std::string JEEP::JFunctionAdaptorHelper< JReturn_t(*)(Args...) >::symbol

protectedinherited

Definition at line 293 of file JFunctionAdaptor.hh.

int* JLANG::JSharedCounter::counter

protectedinherited

Definition at line 94 of file JSharedCounter.hh.

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

JEventSelector.hh

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation