EventContext Class Reference

This class represents an entry point to all the event specific data. More...

#include <GaudiKernel/EventContext.h>

Collaboration diagram for EventContext:

Public Types
using	ContextID_t = size_t
using	ContextEvt_t = size_t

Public Member Functions
	EventContext ()=default
	EventContext (const ContextEvt_t e, const ContextID_t s=INVALID_CONTEXT_ID, const ContextID_t subSlot=INVALID_CONTEXT_ID)
ContextEvt_t	evt () const
ContextID_t	slot () const
ContextID_t	subSlot () const
bool	usesSubSlot () const
bool	valid () const
const EventIDBase &	eventID () const
void	set (const ContextEvt_t e=0, const ContextID_t s=INVALID_CONTEXT_ID, const ContextID_t subSlot=INVALID_CONTEXT_ID)
void	setEvt (const ContextEvt_t e)
void	setSlot (const ContextID_t s)
void	setSubSlot (const ContextID_t subslot)
void	setValid (const bool b=true)
void	setEventID (const EventIDBase &e)
template<typename ValueType , typename... Args>
auto &	emplaceExtension (Args &&... args)
template<typename T >
auto &	setExtension (T &&t)
void	resetExtension ()
std::any	detachExtension ()
template<typename T >
auto &	getExtension ()
template<typename T >
const auto &	getExtension () const
template<typename T >
T *	tryGetExtension () noexcept
template<typename T >
const T *	tryGetExtension () const noexcept
bool	hasExtension () const
template<typename T >
bool	hasExtension () const
const std::type_info &	getExtensionType () const

Static Public Attributes
static constexpr ContextID_t	INVALID_CONTEXT_ID = std::numeric_limits<ContextID_t>::max()
static constexpr ContextEvt_t	INVALID_CONTEXT_EVT = std::numeric_limits<ContextEvt_t>::max()

Private Attributes
EventIDBase	m_eid {}
ContextEvt_t	m_evt_num {INVALID_CONTEXT_EVT}
ContextID_t	m_evt_slot {INVALID_CONTEXT_ID}
ContextID_t	m_sub_slot {INVALID_CONTEXT_ID}
bool	m_valid {false}
std::any	m_extension

Detailed Description

This class represents an entry point to all the event specific data.

It is needed to make the algorithm "aware" of the event it is operating on. This was not needed in the serial version of Gaudi where the assumption of 1-event-at-the-time processing was implicit.

This class has nothing to do with the AlgContextSvc or the Context of the EvtSelector!

Author

Danilo Piparo, Charles Leggett

Date

2012

Definition at line 34 of file EventContext.h.

Member Typedef Documentation

ContextEvt_t

using EventContext::ContextEvt_t = size_t

Definition at line 37 of file EventContext.h.

ContextID_t

using EventContext::ContextID_t = size_t

Definition at line 36 of file EventContext.h.

Constructor & Destructor Documentation

EventContext() [1/2]

EventContext::EventContext ( )

default

EventContext() [2/2]

EventContext::EventContext ( const ContextEvt_t  e, const ContextID_t  s = INVALID_CONTEXT_ID, const ContextID_t  subSlot = INVALID_CONTEXT_ID  )

inline

Definition at line 44 of file EventContext.h.

      : m_evt_num( e ), m_evt_slot( s ), m_sub_slot( subSlot ) {
    m_valid = ( e != INVALID_CONTEXT_EVT && s != INVALID_CONTEXT_ID );
  }

Member Function Documentation

detachExtension()

std::any EventContext::detachExtension ( )

inline

Definition at line 100 of file EventContext.h.

{ return std::move( m_extension ); }

emplaceExtension()

template<typename ValueType , typename... Args>

auto& EventContext::emplaceExtension ( Args &&...  args )

inline

Definition at line 88 of file EventContext.h.

                                           {
    return m_extension.emplace<ValueType>( std::forward<Args>( args )... );
  }

eventID()

const EventIDBase& EventContext::eventID ( ) const

inline

Definition at line 55 of file EventContext.h.

{ return m_eid; }

evt()

ContextEvt_t EventContext::evt ( ) const

inline

Definition at line 50 of file EventContext.h.

{ return m_evt_num; }

getExtension() [1/2]

template<typename T >

auto& EventContext::getExtension ( )

inline

Definition at line 103 of file EventContext.h.

                       {
    return std::any_cast<std::decay_t<T>&>( m_extension );
  }

getExtension() [2/2]

template<typename T >

const auto& EventContext::getExtension ( ) const

inline

Definition at line 108 of file EventContext.h.

                                   {
    return std::any_cast<std::decay_t<T> const&>( m_extension );
  }

getExtensionType()

const std::type_info& EventContext::getExtensionType ( ) const

inline

Definition at line 129 of file EventContext.h.

{ return m_extension.type(); }

hasExtension() [1/2]

bool EventContext::hasExtension ( ) const

inline

Definition at line 122 of file EventContext.h.

{ return m_extension.has_value(); }

hasExtension() [2/2]

template<typename T >

bool EventContext::hasExtension ( ) const

inline

Definition at line 125 of file EventContext.h.

                            {
    return hasExtension() && m_extension.type() == typeid( std::decay_t<T> );
  }

resetExtension()

void EventContext::resetExtension ( )

inline

Definition at line 98 of file EventContext.h.

{ m_extension.reset(); }

set()

void EventContext::set ( const ContextEvt_t  e = 0, const ContextID_t  s = INVALID_CONTEXT_ID, const ContextID_t  subSlot = INVALID_CONTEXT_ID  )

inline

Definition at line 57 of file EventContext.h.

                                                             {
    m_valid    = ( e != INVALID_CONTEXT_EVT && s != INVALID_CONTEXT_ID );
    m_evt_num  = e;
    m_evt_slot = s;
    m_sub_slot = subSlot;
  }

setEventID()

void EventContext::setEventID ( const EventIDBase &  e )

inline

Definition at line 85 of file EventContext.h.

{ m_eid = e; }

setEvt()

void EventContext::setEvt ( const ContextEvt_t  e )

inline

Definition at line 65 of file EventContext.h.

                                      {
    if ( e == INVALID_CONTEXT_EVT ) setValid( false );
    m_evt_num = e;
  }

setExtension()

template<typename T >

auto& EventContext::setExtension ( T &&  t )

inline

Definition at line 93 of file EventContext.h.

                              {
    m_extension = std::forward<T>( t );
    return getExtension<T>();
  }

setSlot()

void EventContext::setSlot ( const ContextID_t  s )

inline

Definition at line 70 of file EventContext.h.

                                      {
    if ( s == INVALID_CONTEXT_ID ) setValid( false );
    m_evt_slot = s;
  }

setSubSlot()

void EventContext::setSubSlot ( const ContextID_t  subslot )

inline

Definition at line 75 of file EventContext.h.

{ m_sub_slot = subslot; }

setValid()

void EventContext::setValid ( const bool  b = true )

inline

Definition at line 77 of file EventContext.h.

                                       {
    m_valid = b;
    if ( !m_valid ) {
      m_evt_slot = INVALID_CONTEXT_ID;
      m_evt_num  = INVALID_CONTEXT_EVT;
    }
  }

slot()

ContextID_t EventContext::slot ( ) const

inline

Definition at line 51 of file EventContext.h.

{ return m_evt_slot; }

subSlot()

ContextID_t EventContext::subSlot ( ) const

inline

Definition at line 52 of file EventContext.h.

{ return m_sub_slot; }

tryGetExtension() [1/2]

template<typename T >

T* EventContext::tryGetExtension ( )

inlinenoexcept

Definition at line 113 of file EventContext.h.

                                {
    return std::any_cast<T>( &m_extension );
  }

tryGetExtension() [2/2]

template<typename T >

const T* EventContext::tryGetExtension ( ) const

inlinenoexcept

Definition at line 118 of file EventContext.h.

                                            {
    return std::any_cast<T>( &m_extension );
  }

usesSubSlot()

bool EventContext::usesSubSlot ( ) const

inline

Definition at line 53 of file EventContext.h.

{ return m_sub_slot != INVALID_CONTEXT_ID; }

valid()

bool EventContext::valid ( ) const

inline

Definition at line 54 of file EventContext.h.

{ return m_valid; }

Member Data Documentation

INVALID_CONTEXT_EVT

constexpr ContextEvt_t EventContext::INVALID_CONTEXT_EVT = std::numeric_limits<ContextEvt_t>::max()

static

Definition at line 40 of file EventContext.h.

INVALID_CONTEXT_ID

constexpr ContextID_t EventContext::INVALID_CONTEXT_ID = std::numeric_limits<ContextID_t>::max()

static

Definition at line 39 of file EventContext.h.

m_eid

EventIDBase EventContext::m_eid {}

private

Definition at line 132 of file EventContext.h.

m_evt_num

ContextEvt_t EventContext::m_evt_num {INVALID_CONTEXT_EVT}

private

Definition at line 133 of file EventContext.h.

m_evt_slot

ContextID_t EventContext::m_evt_slot {INVALID_CONTEXT_ID}

private

Definition at line 134 of file EventContext.h.

m_extension

std::any EventContext::m_extension

private

Definition at line 138 of file EventContext.h.

m_sub_slot

ContextID_t EventContext::m_sub_slot {INVALID_CONTEXT_ID}

private

Definition at line 135 of file EventContext.h.

m_valid

bool EventContext::m_valid {false}

private

Definition at line 136 of file EventContext.h.

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

• GaudiKernel/GaudiKernel/EventContext.h