This class works in conjunction with TTreeProcessorMP, reacting to messages received from it as specified by the Notify and HandleInput methods.

Definition at line 34 of file TMPWorkerTree.h.

Public Member Functions
	TMPWorkerTree ()
	Class constructors.

	TMPWorkerTree (const std::vector< std::string > &fileNames, TEntryList *entries, const std::string &treeName, UInt_t nWorkers, ULong64_t maxEntries, ULong64_t firstEntry)

	TMPWorkerTree (const TMPWorkerTree &)=delete

	TMPWorkerTree (TTree tree, TEntryList entries, UInt_t nWorkers, ULong64_t maxEntries, ULong64_t firstEntry)

virtual	~TMPWorkerTree ()

TMPWorkerTree &	operator= (const TMPWorkerTree &)=delete

Public Member Functions inherited from TMPWorker
	TMPWorker ()

	TMPWorker (const TMPWorker &)=delete

	TMPWorker (unsigned nWorkers, ULong64_t maxEntries)

virtual	~TMPWorker ()

unsigned	GetNWorker () const

pid_t	GetPid ()

TSocket *	GetSocket ()

virtual void	Init (int fd, unsigned workerN)
	This method is called by children processes right after forking.

TMPWorker &	operator= (const TMPWorker &)=delete

void	Run ()

Protected Member Functions
void	CloseFile ()
	Handle file closing.

ULong64_t	EvalMaxEntries (ULong64_t maxEntries)
	Max entries evaluation.

void	HandleInput (MPCodeBufPair &msg)
	Execute instructions received from a MP client.

void	Init (int fd, UInt_t workerN)
	Init overload defining max entries.

Int_t	LoadTree (UInt_t code, MPCodeBufPair &msg, Long64_t &start, Long64_t &finish, TEntryList **enl, std::string &errmsg)
	Load the required tree and evaluate the processing range.

TFile *	OpenFile (const std::string &fileName)
	Handle file opening.

virtual void	Process (UInt_t, MPCodeBufPair &)

TTree *	RetrieveTree (TFile *fp)
	Retrieve a tree from an open file.

virtual void	SendResult ()

void	Setup ()
	Auxiliary method for common initialization.

void	SetupTreeCache (TTree *tree)
	Tree cache handling.

Protected Member Functions inherited from TMPWorker
void	SendError (const std::string &errmsg, unsigned int code=MPCode::kError)
	Error sender.

Protected Attributes
TEntryList *	fEntryList
	entrylist

TFile *	fFile
	last open file

std::vector< std::string >	fFileNames
	the files to be processed by all workers

ULong64_t	fFirstEntry
	first entry to br processed

TTree *	fTree
	pointer to the tree to be processed. It is only used if the tree is directly passed to TProcessExecutor::Process as argument

std::string	fTreeName
	the name of the tree to be processed

Protected Attributes inherited from TMPWorker
std::string	fId
	identifier string in the form `W<nwrk>\|P<proc id>`

ULong64_t	fMaxNEntries
	the maximum number of entries to be processed by this worker

unsigned	fNWorkers
	the number of workers spawned

ULong64_t	fProcessedEntries
	the number of entries processed by this worker so far

Private Attributes
Long64_t	fCacheSize
	Cache size.

TTreeCache *	fTreeCache
	instance of the tree cache for the tree

Bool_t	fTreeCacheIsLearning
	Whether cache is in learning phase.

Bool_t	fUseTreeCache
	Control usage of the tree cache.

#include <TMPWorkerTree.h>

Inheritance diagram for TMPWorkerTree:

[legend]

Constructor & Destructor Documentation

◆ TMPWorkerTree() [1/4]

TMPWorkerTree::TMPWorkerTree ( )

Class constructors.

Note that this does not set variables like fPid or fS (worker's socket).
These operations are handled by the Init method, which is called after forking.
This separation is in place because the instantiation of a worker must be done once before forking, while the initialization of the members must be done after forking by each of the children processes.

Definition at line 46 of file TMPWorkerTree.cxx.

◆ TMPWorkerTree() [2/4]

TMPWorkerTree::TMPWorkerTree	(	const std::vector< std::string > &	fileNames,
		TEntryList *	entries,
		const std::string &	treeName,
		UInt_t	nWorkers,
		ULong64_t	maxEntries,
		ULong64_t	firstEntry
	)

Definition at line 53 of file TMPWorkerTree.cxx.

◆ TMPWorkerTree() [3/4]

TMPWorkerTree::TMPWorkerTree	(	TTree *	tree,
		TEntryList *	entries,
		UInt_t	nWorkers,
		ULong64_t	maxEntries,
		ULong64_t	firstEntry
	)

Definition at line 62 of file TMPWorkerTree.cxx.

◆ ~TMPWorkerTree()

TMPWorkerTree::~TMPWorkerTree ( )

virtual

Definition at line 70 of file TMPWorkerTree.cxx.

◆ TMPWorkerTree() [4/4]

TMPWorkerTree::TMPWorkerTree ( const TMPWorkerTree & )

delete

Member Function Documentation

◆ CloseFile()

void TMPWorkerTree::CloseFile ( )

protected

Handle file closing.

Definition at line 88 of file TMPWorkerTree.cxx.

◆ EvalMaxEntries()

ULong64_t TMPWorkerTree::EvalMaxEntries ( ULong64_t maxEntries )

protected

Max entries evaluation.

Definition at line 190 of file TMPWorkerTree.cxx.

◆ HandleInput()

void TMPWorkerTree::HandleInput ( MPCodeBufPair & msg )

protectedvirtual

Execute instructions received from a MP client.

Generic input handling.

Reimplemented from TMPWorker.

Definition at line 204 of file TMPWorkerTree.cxx.

◆ Init()

void TMPWorkerTree::Init	(	int	fd,
		UInt_t	workerN
	)

protected

Init overload defining max entries.

Definition at line 180 of file TMPWorkerTree.cxx.

◆ LoadTree()

Int_t TMPWorkerTree::LoadTree	(	UInt_t	code,
		MPCodeBufPair &	msg,
		Long64_t &	start,
		Long64_t &	finish,
		TEntryList **	enl,
		std::string &	errmsg
	)

protected

Load the required tree and evaluate the processing range.

Definition at line 276 of file TMPWorkerTree.cxx.

◆ OpenFile()

TFile * TMPWorkerTree::OpenFile ( const std::string & fileName )

protected

Handle file opening.

Definition at line 101 of file TMPWorkerTree.cxx.

◆ operator=()

TMPWorkerTree & TMPWorkerTree::operator= ( const TMPWorkerTree & )

delete

◆ Process()

virtual void TMPWorkerTree::Process	(	UInt_t	,
		MPCodeBufPair &
	)

inlineprotectedvirtual

Reimplemented in TMPWorkerTreeFunc< F >, and TMPWorkerTreeSel.

Definition at line 56 of file TMPWorkerTree.h.

◆ RetrieveTree()

TTree * TMPWorkerTree::RetrieveTree ( TFile * fp )

protected

Retrieve a tree from an open file.

Definition at line 119 of file TMPWorkerTree.cxx.

◆ SendResult()

virtual void TMPWorkerTree::SendResult ( )

inlineprotectedvirtual

Reimplemented in TMPWorkerTreeFunc< F >, and TMPWorkerTreeSel.

Definition at line 58 of file TMPWorkerTree.h.

◆ Setup()

void TMPWorkerTree::Setup ( )

protected

Auxiliary method for common initialization.

Definition at line 78 of file TMPWorkerTree.cxx.

◆ SetupTreeCache()

void TMPWorkerTree::SetupTreeCache ( TTree * tree )

protected

Tree cache handling.

Definition at line 151 of file TMPWorkerTree.cxx.

Member Data Documentation

◆ fCacheSize

Long64_t TMPWorkerTree::fCacheSize

private

Cache size.

Definition at line 75 of file TMPWorkerTree.h.

◆ fEntryList

TEntryList* TMPWorkerTree::fEntryList

protected

entrylist

Definition at line 66 of file TMPWorkerTree.h.

◆ fFile

TFile* TMPWorkerTree::fFile

protected

last open file

Definition at line 65 of file TMPWorkerTree.h.

◆ fFileNames

std::vector<std::string> TMPWorkerTree::fFileNames

protected

the files to be processed by all workers

Definition at line 62 of file TMPWorkerTree.h.

◆ fFirstEntry

ULong64_t TMPWorkerTree::fFirstEntry

protected

first entry to br processed

Definition at line 67 of file TMPWorkerTree.h.

◆ fTree

TTree* TMPWorkerTree::fTree

protected

pointer to the tree to be processed. It is only used if the tree is directly passed to TProcessExecutor::Process as argument

Definition at line 64 of file TMPWorkerTree.h.

◆ fTreeCache

TTreeCache* TMPWorkerTree::fTreeCache

private

instance of the tree cache for the tree

Definition at line 72 of file TMPWorkerTree.h.

◆ fTreeCacheIsLearning

Bool_t TMPWorkerTree::fTreeCacheIsLearning

private

Whether cache is in learning phase.

Definition at line 73 of file TMPWorkerTree.h.

◆ fTreeName

std::string TMPWorkerTree::fTreeName

protected

the name of the tree to be processed

Definition at line 63 of file TMPWorkerTree.h.

◆ fUseTreeCache

Bool_t TMPWorkerTree::fUseTreeCache

private

Control usage of the tree cache.

Definition at line 74 of file TMPWorkerTree.h.

Libraries for TMPWorkerTree:

[legend]

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

tree/treeplayer/inc/TMPWorkerTree.h
tree/treeplayer/src/TMPWorkerTree.cxx

Public Member Functions

Protected Member Functions

Protected Attributes

Private Attributes

Constructor & Destructor Documentation

◆ TMPWorkerTree() [1/4]

◆ TMPWorkerTree() [2/4]

◆ TMPWorkerTree() [3/4]

◆ ~TMPWorkerTree()

◆ TMPWorkerTree() [4/4]

Member Function Documentation

◆ CloseFile()

◆ EvalMaxEntries()

◆ HandleInput()

◆ Init()

◆ LoadTree()

◆ OpenFile()

◆ operator=()

◆ Process()

◆ RetrieveTree()

◆ SendResult()

◆ Setup()

◆ SetupTreeCache()

Member Data Documentation

◆ fCacheSize

◆ fEntryList

◆ fFile

◆ fFileNames

◆ fFirstEntry

◆ fTree

◆ fTreeCache

◆ fTreeCacheIsLearning

◆ fTreeName

◆ fUseTreeCache