IdentifiableContainerMT< T >::IDC_WriteHandle Class Reference

#include <IdentifiableContainerMT.h>

Inheritance diagram for IdentifiableContainerMT< T >::IDC_WriteHandle:

Collaboration diagram for IdentifiableContainerMT< T >::IDC_WriteHandle:

Public Member Functions
	IDC_WriteHandle ()
IDC_WriteHandle &	operator= (const IDC_WriteHandle &other)=delete
	IDC_WriteHandle (const IDC_WriteHandle &other)=delete
IDC_WriteHandle &	operator= (IDC_WriteHandle &&other) noexcept=delete
	IDC_WriteHandle (IDC_WriteHandle &&other)
StatusCode	addOrDelete (std::unique_ptr< T > ptr)
bool	alreadyPresent ()
bool	OnlineAndPresentInAnotherView ()
	This method is to avoid calling an expensive operation in the offline case. More...

Static Public Member Functions
static void	Swap (IDC_WriteHandle &a, IDC_WriteHandle &b) noexcept

Private Member Functions
void	LockOn (std::atomic< const void * > *in, mutexPair *pair) noexcept
void	DropLock () noexcept
void	ReleaseLock ()

Private Attributes
IdentifiableContainerMT< T > *	m_IDC_ptr
IdentifierHash	m_hashId
std::atomic< const void * > *	m_atomic
mutexPair *	m_mut

Friends
class	IdentifiableContainerMT< T >

Detailed Description

template<class T>
class IdentifiableContainerMT< T >::IDC_WriteHandle

Definition at line 34 of file IdentifiableContainerMT.h.

Constructor & Destructor Documentation

IDC_WriteHandle() [1/3]

template<class T >

IdentifiableContainerMT< T >::IDC_WriteHandle::IDC_WriteHandle ( )

inline

Definition at line 39 of file IdentifiableContainerMT.h.

: IDC_WriteHandleBase(), m_IDC_ptr(0), m_hashId(0) { }

IDC_WriteHandle() [2/3]

template<class T >

IdentifiableContainerMT< T >::IDC_WriteHandle::IDC_WriteHandle ( const IDC_WriteHandle &  other )

delete

IDC_WriteHandle() [3/3]

template<class T >

IdentifiableContainerMT< T >::IDC_WriteHandle::IDC_WriteHandle ( IDC_WriteHandle &&  other )

inline

Definition at line 52 of file IdentifiableContainerMT.h.

                                                 : IDC_WriteHandle() {
           Swap(*this, other);
        }

Member Function Documentation

addOrDelete()

template<class T >

StatusCode IdentifiableContainerMT< T >::IDC_WriteHandle::addOrDelete ( std::unique_ptr< T >  ptr )

inline

Definition at line 56 of file IdentifiableContainerMT.h.

                                                                  {
           if(ATH_UNLIKELY(m_hashId >= m_IDC_ptr->m_link->fullSize())) return StatusCode::FAILURE;
           StatusCode sc = m_IDC_ptr->addLock(std::move(ptr), m_hashId);
           IDC_WriteHandleBase::ReleaseLock();
           return sc;
        }

alreadyPresent()

template<class T >

bool IdentifiableContainerMT< T >::IDC_WriteHandle::alreadyPresent ( )

inline

Definition at line 62 of file IdentifiableContainerMT.h.

{ return m_IDC_ptr->m_link->tryAddFromCache(m_hashId, *this); }

DropLock()

void IDC_WriteHandleBase::DropLock ( )

noexceptinherited

Definition at line 43 of file IDC_WriteHandleBase.cxx.

                                           {
   m_atomic = nullptr;
}

LockOn()

void EventContainers::IDC_WriteHandleBase::LockOn ( std::atomic< const void * > *  in, mutexPair *  pair  )

inlinenoexceptinherited

Definition at line 42 of file IDC_WriteHandleBase.h.

                                                                     {
      m_atomic = in;
      m_mut    = pair;
   }

OnlineAndPresentInAnotherView()

template<class T >

bool IdentifiableContainerMT< T >::IDC_WriteHandle::OnlineAndPresentInAnotherView ( )

inline

This method is to avoid calling an expensive operation in the offline case.

Definition at line 64 of file IdentifiableContainerMT.h.

{ return m_IDC_ptr->m_OnlineMode && m_IDC_ptr->m_link->tryAddFromCache(m_hashId, *this); }

operator=() [1/2]

template<class T >

IDC_WriteHandle& IdentifiableContainerMT< T >::IDC_WriteHandle::operator= ( const IDC_WriteHandle &  other )

delete

operator=() [2/2]

template<class T >

IDC_WriteHandle& IdentifiableContainerMT< T >::IDC_WriteHandle::operator= ( IDC_WriteHandle &&  other )

deletenoexcept

ReleaseLock()

void IDC_WriteHandleBase::ReleaseLock ( )

inherited

Definition at line 17 of file IDC_WriteHandleBase.cxx.

                                     {
   if(m_atomic==nullptr) return;
//Convenience declarations
   const void* waitstate = reinterpret_cast<const void*>(IdentifiableCacheBase::INVALIDflag);
   const void* ABORTstate = reinterpret_cast<const void*>(IdentifiableCacheBase::ABORTEDflag);
 
//Running code
   assert(m_atomic->load() != ABORTstate);
#ifndef __cpp_lib_atomic_wait
   typedef std::scoped_lock<decltype(m_mut->mutex)> lockguard;
   lockguard lk(m_mut->mutex);
   m_atomic->compare_exchange_strong(waitstate, ABORTstate);
   m_mut->condition.notify_all();
#else
   //If you have got here the ptr was not set so creation is being aborted
   //The hash is being set to the aborted flag
   //I think memory ordering can be relaxed here but to be safe we will use defaults.
   m_atomic->compare_exchange_strong(waitstate, ABORTstate);
   //Notify_all to wake up any threads waiting for this hash
   m_atomic->notify_all();
#endif
 
   m_atomic = nullptr;
}

Swap()

template<class T >

static void IdentifiableContainerMT< T >::IDC_WriteHandle::Swap ( IDC_WriteHandle &  a, IDC_WriteHandle &  b  )

inlinestaticnoexcept

Definition at line 43 of file IdentifiableContainerMT.h.

                                                                          {
           if(&a == &b) return;
           std::swap(a.m_IDC_ptr, b.m_IDC_ptr);
           std::swap(a.m_hashId, b.m_hashId);
           std::swap(a.m_atomic, b.m_atomic);
#ifndef __cpp_lib_atomic_wait
           std::swap(a.m_mut, b.m_mut);
#endif
        }

Friends And Related Function Documentation

IdentifiableContainerMT< T >

template<class T >

friend class IdentifiableContainerMT< T >

friend

Definition at line 251 of file IdentifiableContainerMT.h.

Member Data Documentation

m_atomic

std::atomic<const void*>* EventContainers::IDC_WriteHandleBase::m_atomic

protectedinherited

Definition at line 29 of file IDC_WriteHandleBase.h.

m_hashId

template<class T >

IdentifierHash IdentifiableContainerMT< T >::IDC_WriteHandle::m_hashId

private

Definition at line 37 of file IdentifiableContainerMT.h.

m_IDC_ptr

template<class T >

IdentifiableContainerMT<T>* IdentifiableContainerMT< T >::IDC_WriteHandle::m_IDC_ptr

private

Definition at line 36 of file IdentifiableContainerMT.h.

m_mut

mutexPair* EventContainers::IDC_WriteHandleBase::m_mut

protectedinherited

Definition at line 31 of file IDC_WriteHandleBase.h.

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

• IdentifiableContainerMT.h