edm::eventsetup::DataProxyTemplate< RecordT, DataT > Class Template Reference

#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

record_type

template<class RecordT, class DataT>

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

Definition at line 56 of file DataProxyTemplate.h.

value_type

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

DataProxyTemplate()

template<class RecordT, class DataT>

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

inline

Definition at line 58 of file DataProxyTemplate.h.

{}

Member Function Documentation

invalidateCache()

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.

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

make()

template<class RecordT, class DataT>

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

protectedpure virtual

Implemented in edmtest::TestDataProxyTemplateJ.

Referenced by edm::eventsetup::DataProxyTemplate< ESTestRecordJ, ESTestDataJ >::prefetchAsyncImpl().

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.

                                                                         {
        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);
              ServiceRegistry::Operate operate(iToken);
              this->make(rec, iKey);
            } catch (...) {
              this->taskList_.doneWaiting(std::current_exception());
              return;
            }
            this->taskList_.doneWaiting(std::exception_ptr{});
          });
        }
      }

Member Data Documentation

prefetching_

template<class RecordT, class DataT>

std::atomic<bool> edm::eventsetup::DataProxyTemplate< RecordT, DataT >::prefetching_ {false}

private

Definition at line 97 of file DataProxyTemplate.h.

Referenced by edm::eventsetup::DataProxyTemplate< ESTestRecordJ, ESTestDataJ >::invalidateCache(), and edm::eventsetup::DataProxyTemplate< ESTestRecordJ, ESTestDataJ >::prefetchAsyncImpl().

taskList_

template<class RecordT, class DataT>

WaitingTaskList edm::eventsetup::DataProxyTemplate< RecordT, DataT >::taskList_

private

Definition at line 96 of file DataProxyTemplate.h.

Referenced by edm::eventsetup::DataProxyTemplate< ESTestRecordJ, ESTestDataJ >::invalidateCache(), and edm::eventsetup::DataProxyTemplate< ESTestRecordJ, ESTestDataJ >::prefetchAsyncImpl().