#include <DataProxyTemplate.h>

Inheritance diagram for edm::eventsetup::DataProxyTemplate< RecordT, DataT >:

Public Types
typedef RecordT	record_type

typedef DataT	value_type

Public Member Functions
	DataProxyTemplate ()

void	prefetchAsyncImpl (WaitingTaskHolder iTask, const EventSetupRecordImpl &iRecord, const DataKey &iKey, EventSetupImpl const *iEventSetupImpl, edm::ServiceToken const &iToken, edm::ESParentContext const &iParent) override

Public Member Functions inherited from edm::eventsetup::DataProxy
bool	cacheIsValid () const

	DataProxy ()

	DataProxy (DataProxy const &)=delete

void const *	get (EventSetupRecordImpl const &, DataKey const &, bool iTransiently, ActivityRegistry const , EventSetupImpl const , ESParentContext const &) const

void const *	getAfterPrefetch (const EventSetupRecordImpl &iRecord, const DataKey &iKey, bool iTransiently) const

virtual void	initializeForNewIOV ()

void	invalidate ()

DataProxy const &	operator= (DataProxy const &)=delete

void	prefetchAsync (WaitingTaskHolder, EventSetupRecordImpl const &, DataKey const &, EventSetupImpl const *, ServiceToken const &, ESParentContext const &) const

ComponentDescription const *	providerDescription () const
	returns the description of the DataProxyProvider which owns this Proxy More...

void	resetIfTransient ()

void	setProviderDescription (ComponentDescription const *iDesc)

virtual	~DataProxy ()

Protected Member Functions
void	invalidateCache () override

virtual const DataT *	make (const RecordT &, const DataKey &)=0

Protected Member Functions inherited from edm::eventsetup::DataProxy
void	clearCacheIsValid ()

virtual void const *	getAfterPrefetchImpl () const =0

virtual void	invalidateTransientCache ()

Private Attributes
std::atomic< bool >	prefetching_ {false}

WaitingTaskList	taskList_

Detailed Description

template<class RecordT, class DataT>
class edm::eventsetup::DataProxyTemplate< RecordT, DataT >

Definition at line 53 of file DataProxyTemplate.h.

Member Typedef Documentation

template<class RecordT , class DataT >

typedef RecordT edm::eventsetup::DataProxyTemplate< RecordT, DataT >::record_type

Definition at line 56 of file DataProxyTemplate.h.

template<class RecordT , class DataT >

typedef DataT edm::eventsetup::DataProxyTemplate< RecordT, DataT >::value_type

Definition at line 55 of file DataProxyTemplate.h.

Constructor & Destructor Documentation

template<class RecordT , class DataT >

edm::eventsetup::DataProxyTemplate< RecordT, DataT >::DataProxyTemplate ( )

inline

Definition at line 58 of file DataProxyTemplate.h.

58 {}

Member Function Documentation

template<class RecordT , class DataT >

void edm::eventsetup::DataProxyTemplate< RecordT, DataT >::invalidateCache ( )

inlineoverrideprotectedvirtual

indicates that the Proxy should invalidate any cached information as that information has 'expired' (i.e. we have moved to a new IOV)

Implements edm::eventsetup::DataProxy.

Definition at line 88 of file DataProxyTemplate.h.

References edm::eventsetup::DataProxyTemplate< RecordT, DataT >::prefetching_, edm::WaitingTaskList::reset(), and edm::eventsetup::DataProxyTemplate< RecordT, DataT >::taskList_.

                                       {
         taskList_.reset();
         prefetching_ = false;
       }

template<class RecordT , class DataT >

virtual const DataT* edm::eventsetup::DataProxyTemplate< RecordT, DataT >::make	(	const RecordT &	,
		const DataKey &
	)

protectedpure virtual

Referenced by edm::eventsetup::DataProxyTemplate< RecordT, DataT >::prefetchAsyncImpl().

template<class RecordT , class DataT >

void edm::eventsetup::DataProxyTemplate< RecordT, DataT >::prefetchAsyncImpl	(	WaitingTaskHolder	,
		const EventSetupRecordImpl &	,
		const DataKey &	iKey,
		EventSetupImpl const *	,
		edm::ServiceToken const &	,
		edm::ESParentContext const &
	)

inlineoverridevirtual

This is the function which does the real work of getting the data if it is not already cached. The returning 'void const*' must point to an instance of the class type corresponding to the type designated in iKey. So if iKey refers to a base class interface the pointer must be a pointer to that base class interface and not a pointer to an inheriting class instance.

Implements edm::eventsetup::DataProxy.

Definition at line 60 of file DataProxyTemplate.h.

References edm::WaitingTaskList::add(), cms::cuda::assert(), edm::WaitingTaskList::doneWaiting(), edm::WaitingTaskHolder::group(), edm::eventsetup::EventSetupRecordImpl::key(), edm::eventsetup::DataProxyTemplate< RecordT, DataT >::make(), SiStripPI::max, edm::eventsetup::DataProxyTemplate< RecordT, DataT >::prefetching_, and edm::eventsetup::DataProxyTemplate< RecordT, DataT >::taskList_.

                                                                          {
         assert(iRecord.key() == RecordT::keyForClass());
         bool expected = false;
         bool doPrefetch = prefetching_.compare_exchange_strong(expected, true);
         taskList_.add(iTask);
 
         if (doPrefetch) {
           iTask.group()->run([this, &iRecord, iKey, iEventSetupImpl, iToken, iParent]() {
             try {
               RecordT rec;
               rec.setImpl(&iRecord, std::numeric_limits<unsigned int>::max(), nullptr, iEventSetupImpl, &iParent, true);
               ServiceRegistry::Operate operate(iToken);
               this->make(rec, iKey);
             } catch (...) {
               this->taskList_.doneWaiting(std::current_exception());
               return;
             }
             this->taskList_.doneWaiting(std::exception_ptr{});
           });
         }
       }