The head node of a RDF computation graph.

This class is responsible of running the event loop.

Definition at line 56 of file RLoopManager.hxx.

Classes
class	TCallback

class	TOneTimeCallback

Public Member Functions
	RLoopManager (const RLoopManager &)=delete

	RLoopManager (std::unique_ptr< RDataSource > ds, const ColumnNames_t &defaultBranches)

	RLoopManager (TTree *tree, const ColumnNames_t &defaultBranches)

	RLoopManager (ULong64_t nEmptyEntries)

void	AddColumnAlias (const std::string &alias, const std::string &colName)

void	AddFilterName (std::vector< std::string > &)
	End of recursive chain of calls, does nothing. More...

void	Book (RDFInternal::RActionBase *actionPtr)

void	Book (RFilterBase *filterPtr)

void	Book (RRangeBase *rangePtr)

bool	CheckFilters (unsigned int, Long64_t) final

void	Deregister (RDFInternal::RActionBase *actionPtr)

void	Deregister (RFilterBase *filterPtr)

void	Deregister (RRangeBase *rangePtr)

const std::map< std::string, std::string > &	GetAliasMap () const

std::vector< RDFInternal::RActionBase * >	GetAllActions ()
	For all the actions, either booked or run. More...

std::vector< RDFInternal::RActionBase * >	GetBookedActions ()

const ColumnNames_t &	GetBranchNames ()
	Return all valid TTree::Branch names (caching results for subsequent calls). More...

RDataSource *	GetDataSource () const

const ColumnNames_t &	GetDefaultColumnNames () const
	Return the list of default columns – empty if none was provided when constructing the RDataFrame. More...

::TDirectory *	GetDirectory () const

std::vector< std::string >	GetFiltersNames ()
	For each booked filter, returns either the name or "Unnamed Filter". More...

std::shared_ptr< ROOT::Internal::RDF::GraphDrawing::GraphNode >	GetGraph ()

RLoopManager *	GetLoopManagerUnchecked () final

ULong64_t	GetNEmptyEntries () const

unsigned int	GetNRuns () const

unsigned int	GetNSlots () const

TTree *	GetTree () const

void	IncrChildrenCount () final

void	Jit ()
	Add RDF nodes that require just-in-time compilation to the computation graph. More...

void	JitDeclarations ()

RLoopManager &	operator= (const RLoopManager &)=delete

void	PartialReport (ROOT::RDF::RCutFlowReport &) const final
	End of recursive chain of calls, does nothing. More...

void	RegisterCallback (ULong64_t everyNEvents, std::function< void(unsigned int)> &&f)

void	Report (ROOT::RDF::RCutFlowReport &rep) const final
	Call `FillReport` on all booked filters. More...

void	Run ()
	Start the event loop with a different mechanism depending on IMT/no IMT, data source/no data source. More...

void	SetTree (const std::shared_ptr< TTree > &tree)

void	StopProcessing () final

void	ToJitExec (const std::string &) const

Public Member Functions inherited from ROOT::Detail::RDF::RNodeBase
	RNodeBase (RLoopManager *lm=nullptr)

virtual	~RNodeBase ()

virtual void	AddFilterName (std::vector< std::string > &filters)=0

virtual bool	CheckFilters (unsigned int, Long64_t)=0

virtual std::shared_ptr< ROOT::Internal::RDF::GraphDrawing::GraphNode >	GetGraph ()=0

virtual RLoopManager *	GetLoopManagerUnchecked ()

virtual void	IncrChildrenCount ()=0

virtual void	PartialReport (ROOT::RDF::RCutFlowReport &) const =0

virtual void	Report (ROOT::RDF::RCutFlowReport &) const =0

virtual void	ResetChildrenCount ()

virtual void	StopProcessing ()=0

Private Types
using	Callback_t = std::function< void(unsigned int)>

enum class	ELoopType { kROOTFiles , kROOTFilesMT , kNoFiles , kNoFilesMT , kDataSource , kDataSourceMT }

Private Member Functions
void	CheckIndexedFriends ()

void	CleanUpNodes ()
	Perform clean-up operations. To be called at the end of each event loop. More...

void	CleanUpTask (unsigned int slot)
	Perform clean-up operations. To be called at the end of each task execution. More...

void	EvalChildrenCounts ()
	Trigger counting of number of children nodes for each node of the functional graph. More...

void	InitNodes ()
	Initialize all nodes of the functional graph before running the event loop. More...

void	InitNodeSlots (TTreeReader *r, unsigned int slot)
	Build TTreeReaderValues for all nodes This method loops over all filters, actions and other booked objects and calls their `InitRDFValues` methods. More...

void	RunAndCheckFilters (unsigned int slot, Long64_t entry)
	Execute actions and make sure named filters are called for each event. More...

void	RunDataSource ()
	Run event loop over data accessed through a DataSource, in sequence. More...

void	RunDataSourceMT ()
	Run event loop over data accessed through a DataSource, in parallel. More...

void	RunEmptySource ()
	Run event loop with no source files, in sequence. More...

void	RunEmptySourceMT ()
	Run event loop with no source files, in parallel. More...

void	RunTreeProcessorMT ()
	Run event loop over one or multiple ROOT files, in parallel. More...

void	RunTreeReader ()
	Run event loop over one or multiple ROOT files, in sequence. More...

Private Attributes
std::map< std::string, std::string >	fAliasColumnNameMap
	ColumnNameAlias-columnName pairs. More...

std::vector< RDFInternal::RActionBase * >	fBookedActions
	Non-owning pointers to actions to be run. More...

std::vector< RFilterBase * >	fBookedFilters

std::vector< RFilterBase * >	fBookedNamedFilters
	Contains a subset of fBookedFilters, i.e. only the named filters. More...

std::vector< RRangeBase * >	fBookedRanges

std::vector< TCallback >	fCallbacks
	Registered callbacks. More...

std::vector< TOneTimeCallback >	fCallbacksOnce
	Registered callbacks to invoke just once before running the loop. More...

const std::unique_ptr< RDataSource >	fDataSource
	Owning pointer to a data-source object. Null if no data-source. More...

const ColumnNames_t	fDefaultColumns

const ELoopType	fLoopType
	The kind of event loop that is going to be run (e.g. on ROOT files, on no files) More...

bool	fMustRunNamedFilters {true}

const ULong64_t	fNEmptyEntries {0}

unsigned int	fNRuns {0}
	Number of event loops run. More...

const unsigned int	fNSlots {1}

std::vector< RDFInternal::RActionBase * >	fRunActions
	Non-owning pointers to actions already run. More...

std::shared_ptr< TTree >	fTree {nullptr}
	Shared pointer to the input TTree. More...

ColumnNames_t	fValidBranchNames
	Cache of the tree/chain branch names. Never access directy, always use GetBranchNames(). More...

Additional Inherited Members
Protected Attributes inherited from ROOT::Detail::RDF::RNodeBase
RLoopManager *	fLoopManager

unsigned int	fNChildren {0}
	Number of nodes of the functional graph hanging from this object. More...

unsigned int	fNStopsReceived {0}
	Number of times that a children node signaled to stop processing entries. More...

#include <ROOT/RDF/RLoopManager.hxx>

Inheritance diagram for ROOT::Detail::RDF::RLoopManager:

[legend]

Member Typedef Documentation

◆ Callback_t

using ROOT::Detail::RDF::RLoopManager::Callback_t = std::function<void(unsigned int)>

private

Definition at line 58 of file RLoopManager.hxx.

Member Enumeration Documentation

◆ ELoopType

enum class ROOT::Detail::RDF::RLoopManager::ELoopType

strongprivate

Enumerator
kROOTFiles
kROOTFilesMT
kNoFiles
kNoFilesMT
kDataSource
kDataSourceMT

Definition at line 57 of file RLoopManager.hxx.

Constructor & Destructor Documentation

◆ RLoopManager() [1/4]

RLoopManager::RLoopManager	(	TTree *	tree,
		const ColumnNames_t &	defaultBranches
	)

Definition at line 242 of file RLoopManager.cxx.

◆ RLoopManager() [2/4]

RLoopManager::RLoopManager ( ULong64_t nEmptyEntries )

Definition at line 249 of file RLoopManager.cxx.

◆ RLoopManager() [3/4]

RLoopManager::RLoopManager	(	std::unique_ptr< RDataSource >	ds,
		const ColumnNames_t &	defaultBranches
	)

Definition at line 255 of file RLoopManager.cxx.

◆ RLoopManager() [4/4]

ROOT::Detail::RDF::RLoopManager::RLoopManager ( const RLoopManager & )

delete

Member Function Documentation

◆ AddColumnAlias()

void ROOT::Detail::RDF::RLoopManager::AddColumnAlias	(	const std::string &	alias,
		const std::string &	colName
	)

inline

Definition at line 165 of file RLoopManager.hxx.

◆ AddFilterName()

void ROOT::Detail::RDF::RLoopManager::AddFilterName ( std::vector< std::string > & )

inlinevirtual

End of recursive chain of calls, does nothing.

Implements ROOT::Detail::RDF::RNodeBase.

Definition at line 171 of file RLoopManager.hxx.

◆ Book() [1/3]

void RLoopManager::Book ( RDFInternal::RActionBase * actionPtr )

Definition at line 612 of file RLoopManager.cxx.

◆ Book() [2/3]

void RLoopManager::Book ( RFilterBase * filterPtr )

Definition at line 623 of file RLoopManager.cxx.

◆ Book() [3/3]

void RLoopManager::Book ( RRangeBase * rangePtr )

Definition at line 638 of file RLoopManager.cxx.

◆ CheckFilters()

bool RLoopManager::CheckFilters	(	unsigned int	,
		Long64_t
	)

finalvirtual

Implements ROOT::Detail::RDF::RNodeBase.

Definition at line 649 of file RLoopManager.cxx.

◆ CheckIndexedFriends()

void RLoopManager::CheckIndexedFriends ( )

private

Definition at line 264 of file RLoopManager.cxx.

◆ CleanUpNodes()

void RLoopManager::CleanUpNodes ( )

private

Perform clean-up operations. To be called at the end of each event loop.

Definition at line 517 of file RLoopManager.cxx.

◆ CleanUpTask()

void RLoopManager::CleanUpTask ( unsigned int slot )

private

Perform clean-up operations. To be called at the end of each task execution.

Definition at line 541 of file RLoopManager.cxx.

◆ Deregister() [1/3]

void RLoopManager::Deregister ( RDFInternal::RActionBase * actionPtr )

Definition at line 617 of file RLoopManager.cxx.

◆ Deregister() [2/3]

void RLoopManager::Deregister ( RFilterBase * filterPtr )

Definition at line 632 of file RLoopManager.cxx.

◆ Deregister() [3/3]

void RLoopManager::Deregister ( RRangeBase * rangePtr )

Definition at line 643 of file RLoopManager.cxx.

◆ EvalChildrenCounts()

void RLoopManager::EvalChildrenCounts ( )

private

Trigger counting of number of children nodes for each node of the functional graph.

This is done once before starting the event loop. Each action sends an increase children count signal upstream, which is propagated until RLoopManager. Each time a node receives the signal, in increments its children counter. Each node only propagates the signal once, even if it receives it multiple times. Named filters also send an increase children count signal, just like actions, as they always execute during the event loop so the graph branch they belong to must count as active even if it does not end in an action.

Definition at line 566 of file RLoopManager.cxx.

◆ GetAliasMap()

const std::map< std::string, std::string > & ROOT::Detail::RDF::RLoopManager::GetAliasMap ( ) const

inline

Definition at line 166 of file RLoopManager.hxx.

◆ GetAllActions()

std::vector< RDFInternal::RActionBase * > RLoopManager::GetAllActions ( )

For all the actions, either booked or run.

Definition at line 684 of file RLoopManager.cxx.

◆ GetBookedActions()

std::vector< RDFInternal::RActionBase * > ROOT::Detail::RDF::RLoopManager::GetBookedActions ( )

inline

Definition at line 178 of file RLoopManager.hxx.

◆ GetBranchNames()

const ColumnNames_t & RLoopManager::GetBranchNames ( )

Return all valid TTree::Branch names (caching results for subsequent calls).

Never use fBranchNames directy, always request it through this method.

Definition at line 712 of file RLoopManager.cxx.

◆ GetDataSource()

RDataSource * ROOT::Detail::RDF::RLoopManager::GetDataSource ( ) const

inline

Definition at line 149 of file RLoopManager.hxx.

◆ GetDefaultColumnNames()

const ColumnNames_t & RLoopManager::GetDefaultColumnNames ( ) const

Return the list of default columns – empty if none was provided when constructing the RDataFrame.

Definition at line 602 of file RLoopManager.cxx.

◆ GetDirectory()

::TDirectory * ROOT::Detail::RDF::RLoopManager::GetDirectory ( ) const

◆ GetFiltersNames()

std::vector< std::string > RLoopManager::GetFiltersNames ( )

For each booked filter, returns either the name or "Unnamed Filter".

Definition at line 674 of file RLoopManager.cxx.

◆ GetGraph()

std::shared_ptr< ROOT::Internal::RDF::GraphDrawing::GraphNode > RLoopManager::GetGraph ( )

virtual

Implements ROOT::Detail::RDF::RNodeBase.

Definition at line 692 of file RLoopManager.cxx.

◆ GetLoopManagerUnchecked()

RLoopManager * ROOT::Detail::RDF::RLoopManager::GetLoopManagerUnchecked ( )

inlinefinalvirtual

Reimplemented from ROOT::Detail::RDF::RNodeBase.

Definition at line 143 of file RLoopManager.hxx.

◆ GetNEmptyEntries()

ULong64_t ROOT::Detail::RDF::RLoopManager::GetNEmptyEntries ( ) const

inline

Definition at line 148 of file RLoopManager.hxx.

◆ GetNRuns()

unsigned int ROOT::Detail::RDF::RLoopManager::GetNRuns ( ) const

inline

Definition at line 168 of file RLoopManager.hxx.

◆ GetNSlots()

unsigned int ROOT::Detail::RDF::RLoopManager::GetNSlots ( ) const

inline

Definition at line 157 of file RLoopManager.hxx.

◆ GetTree()

TTree * RLoopManager::GetTree ( ) const

Definition at line 607 of file RLoopManager.cxx.

◆ IncrChildrenCount()

void ROOT::Detail::RDF::RLoopManager::IncrChildrenCount ( )

inlinefinalvirtual

Implements ROOT::Detail::RDF::RNodeBase.

Definition at line 162 of file RLoopManager.hxx.

◆ InitNodes()

void RLoopManager::InitNodes ( )

private

Initialize all nodes of the functional graph before running the event loop.

This method is called once per event-loop and performs generic initialization operations that do not depend on the specific processing slot (i.e. operations that are common for all threads).

Definition at line 505 of file RLoopManager.cxx.

◆ InitNodeSlots()

void RLoopManager::InitNodeSlots	(	TTreeReader *	r,
		unsigned int	slot
	)

private

Build TTreeReaderValues for all nodes This method loops over all filters, actions and other booked objects and calls their InitRDFValues methods.

It is called once per node per slot, before running the event loop. It also informs each node of the TTreeReader that a particular slot will be using.

Definition at line 491 of file RLoopManager.cxx.

◆ Jit()

void RLoopManager::Jit ( )

Add RDF nodes that require just-in-time compilation to the computation graph.

This method also clears the contents of GetCodeToJit().

Definition at line 551 of file RLoopManager.cxx.

◆ JitDeclarations()

void ROOT::Detail::RDF::RLoopManager::JitDeclarations ( )

◆ operator=()

RLoopManager & ROOT::Detail::RDF::RLoopManager::operator= ( const RLoopManager & )

delete

◆ PartialReport()

void ROOT::Detail::RDF::RLoopManager::PartialReport ( ROOT::RDF::RCutFlowReport & ) const

inlinefinalvirtual

End of recursive chain of calls, does nothing.

Implements ROOT::Detail::RDF::RNodeBase.

Definition at line 160 of file RLoopManager.hxx.

◆ RegisterCallback()

void RLoopManager::RegisterCallback	(	ULong64_t	everyNEvents,
		std::function< void(unsigned int)> &&	f
	)

Definition at line 666 of file RLoopManager.cxx.

◆ Report()

void RLoopManager::Report ( ROOT::RDF::RCutFlowReport & rep ) const

finalvirtual

Call FillReport on all booked filters.

Implements ROOT::Detail::RDF::RNodeBase.

Definition at line 655 of file RLoopManager.cxx.

◆ Run()

void RLoopManager::Run ( )

Start the event loop with a different mechanism depending on IMT/no IMT, data source/no data source.

Also perform a few setup and clean-up operations (jit actions if necessary, clear booked actions after the loop...).

Definition at line 576 of file RLoopManager.cxx.

◆ RunAndCheckFilters()

void RLoopManager::RunAndCheckFilters	(	unsigned int	slot,
		Long64_t	entry
	)

private

Execute actions and make sure named filters are called for each event.

Named filters must be called even if the analysis logic would not require it, lest they report confusing results.

Definition at line 476 of file RLoopManager.cxx.

◆ RunDataSource()

void RLoopManager::RunDataSource ( )

private

Run event loop over data accessed through a DataSource, in sequence.

Definition at line 405 of file RLoopManager.cxx.

◆ RunDataSourceMT()

void RLoopManager::RunDataSourceMT ( )

private

Run event loop over data accessed through a DataSource, in parallel.

Definition at line 435 of file RLoopManager.cxx.

◆ RunEmptySource()

void RLoopManager::RunEmptySource ( )

private

Run event loop with no source files, in sequence.

Definition at line 328 of file RLoopManager.cxx.

◆ RunEmptySourceMT()

void RLoopManager::RunEmptySourceMT ( )

private

Run event loop with no source files, in parallel.

Definition at line 283 of file RLoopManager.cxx.

◆ RunTreeProcessorMT()

void RLoopManager::RunTreeProcessorMT ( )

private

Run event loop over one or multiple ROOT files, in parallel.

Definition at line 344 of file RLoopManager.cxx.

◆ RunTreeReader()

void RLoopManager::RunTreeReader ( )

private

Run event loop over one or multiple ROOT files, in sequence.

Definition at line 377 of file RLoopManager.cxx.

◆ SetTree()

void ROOT::Detail::RDF::RLoopManager::SetTree ( const std::shared_ptr< TTree > & tree )

inline

Definition at line 161 of file RLoopManager.hxx.

◆ StopProcessing()

void ROOT::Detail::RDF::RLoopManager::StopProcessing ( )

inlinefinalvirtual

Implements ROOT::Detail::RDF::RNodeBase.

Definition at line 163 of file RLoopManager.hxx.

◆ ToJitExec()

void RLoopManager::ToJitExec ( const std::string & code ) const

Definition at line 661 of file RLoopManager.cxx.

Member Data Documentation

◆ fAliasColumnNameMap

std::map<std::string, std::string> ROOT::Detail::RDF::RLoopManager::fAliasColumnNameMap

private

ColumnNameAlias-columnName pairs.

Definition at line 112 of file RLoopManager.hxx.

◆ fBookedActions

std::vector<RDFInternal::RActionBase *> ROOT::Detail::RDF::RLoopManager::fBookedActions

private

Non-owning pointers to actions to be run.

Definition at line 97 of file RLoopManager.hxx.

◆ fBookedFilters

std::vector<RFilterBase *> ROOT::Detail::RDF::RLoopManager::fBookedFilters

private

Definition at line 99 of file RLoopManager.hxx.

◆ fBookedNamedFilters

std::vector<RFilterBase *> ROOT::Detail::RDF::RLoopManager::fBookedNamedFilters

private

Contains a subset of fBookedFilters, i.e. only the named filters.

Definition at line 100 of file RLoopManager.hxx.

◆ fBookedRanges

std::vector<RRangeBase *> ROOT::Detail::RDF::RLoopManager::fBookedRanges

private

Definition at line 101 of file RLoopManager.hxx.

◆ fCallbacks

std::vector<TCallback> ROOT::Detail::RDF::RLoopManager::fCallbacks

private

Registered callbacks.

Definition at line 113 of file RLoopManager.hxx.

◆ fCallbacksOnce

std::vector<TOneTimeCallback> ROOT::Detail::RDF::RLoopManager::fCallbacksOnce

private

Registered callbacks to invoke just once before running the loop.

Definition at line 114 of file RLoopManager.hxx.

◆ fDataSource

const std::unique_ptr<RDataSource> ROOT::Detail::RDF::RLoopManager::fDataSource

private

Owning pointer to a data-source object. Null if no data-source.

Definition at line 111 of file RLoopManager.hxx.

◆ fDefaultColumns

const ColumnNames_t ROOT::Detail::RDF::RLoopManager::fDefaultColumns

private

Definition at line 106 of file RLoopManager.hxx.

◆ fLoopType

const ELoopType ROOT::Detail::RDF::RLoopManager::fLoopType

private

The kind of event loop that is going to be run (e.g. on ROOT files, on no files)

Definition at line 110 of file RLoopManager.hxx.

◆ fMustRunNamedFilters

bool ROOT::Detail::RDF::RLoopManager::fMustRunNamedFilters {true}

private

Definition at line 109 of file RLoopManager.hxx.

◆ fNEmptyEntries

const ULong64_t ROOT::Detail::RDF::RLoopManager::fNEmptyEntries {0}

private

Definition at line 107 of file RLoopManager.hxx.

◆ fNRuns

unsigned int ROOT::Detail::RDF::RLoopManager::fNRuns {0}

private

Number of event loops run.

Definition at line 115 of file RLoopManager.hxx.

◆ fNSlots

const unsigned int ROOT::Detail::RDF::RLoopManager::fNSlots {1}

private

Definition at line 108 of file RLoopManager.hxx.

◆ fRunActions

std::vector<RDFInternal::RActionBase *> ROOT::Detail::RDF::RLoopManager::fRunActions

private

Non-owning pointers to actions already run.

Definition at line 98 of file RLoopManager.hxx.

◆ fTree

std::shared_ptr<TTree> ROOT::Detail::RDF::RLoopManager::fTree {nullptr}

private

Shared pointer to the input TTree.

It does not delete the pointee if the TTree/TChain was passed directly as an argument to RDataFrame's ctor (in which case we let users retain ownership).

Definition at line 105 of file RLoopManager.hxx.

◆ fValidBranchNames

ColumnNames_t ROOT::Detail::RDF::RLoopManager::fValidBranchNames

private

Cache of the tree/chain branch names. Never access directy, always use GetBranchNames().

Definition at line 118 of file RLoopManager.hxx.

Libraries for ROOT::Detail::RDF::RLoopManager:

[legend]

Classes

Public Member Functions

Private Types

Private Member Functions

Private Attributes

Additional Inherited Members

Member Typedef Documentation

◆ Callback_t

Member Enumeration Documentation

◆ ELoopType

Constructor & Destructor Documentation

◆ RLoopManager() [1/4]

◆ RLoopManager() [2/4]

◆ RLoopManager() [3/4]

◆ RLoopManager() [4/4]

Member Function Documentation

◆ AddColumnAlias()

◆ AddFilterName()

◆ Book() [1/3]

◆ Book() [2/3]

◆ Book() [3/3]

◆ CheckFilters()

◆ CheckIndexedFriends()

◆ CleanUpNodes()

◆ CleanUpTask()

◆ Deregister() [1/3]

◆ Deregister() [2/3]

◆ Deregister() [3/3]

◆ EvalChildrenCounts()

◆ GetAliasMap()

◆ GetAllActions()

◆ GetBookedActions()

◆ GetBranchNames()

◆ GetDataSource()

◆ GetDefaultColumnNames()

◆ GetDirectory()

◆ GetFiltersNames()

◆ GetGraph()

◆ GetLoopManagerUnchecked()

◆ GetNEmptyEntries()

◆ GetNRuns()

◆ GetNSlots()

◆ GetTree()

◆ IncrChildrenCount()

◆ InitNodes()

◆ InitNodeSlots()

◆ Jit()

◆ JitDeclarations()

◆ operator=()

◆ PartialReport()

◆ RegisterCallback()

◆ Report()

◆ Run()

◆ RunAndCheckFilters()

◆ RunDataSource()

◆ RunDataSourceMT()

◆ RunEmptySource()

◆ RunEmptySourceMT()

◆ RunTreeProcessorMT()

◆ RunTreeReader()

◆ SetTree()

◆ StopProcessing()

◆ ToJitExec()

Member Data Documentation

◆ fAliasColumnNameMap

◆ fBookedActions

◆ fBookedFilters

◆ fBookedNamedFilters

◆ fBookedRanges

◆ fCallbacks

◆ fCallbacksOnce

◆ fDataSource

◆ fDefaultColumns

◆ fLoopType

◆ fMustRunNamedFilters

◆ fNEmptyEntries

◆ fNRuns

◆ fNSlots

◆ fRunActions

◆ fTree