ROOT::Internal::ROnDiskPageMap Class Reference

A memory region that contains packed and compressed pages.

Derived classes implement how the on-disk pages are stored in memory, e.g. mmap'd or in a special area.

Definition at line 98 of file RCluster.hxx.

Public Member Functions
	ROnDiskPageMap ()=default
	ROnDiskPageMap (const ROnDiskPageMap &other)=delete
	ROnDiskPageMap (ROnDiskPageMap &&other)=default
virtual	~ROnDiskPageMap ()
ROnDiskPageMap &	operator= (const ROnDiskPageMap &other)=delete
ROnDiskPageMap &	operator= (ROnDiskPageMap &&other)=default
void	Register (const ROnDiskPage::Key &key, const ROnDiskPage &onDiskPage)
	Inserts information about a page stored in fMemory.

Private Attributes
std::unordered_map< ROnDiskPage::Key, ROnDiskPage >	fOnDiskPages

Friends
class	RCluster

#include <ROOT/RCluster.hxx>

Inheritance diagram for ROOT::Internal::ROnDiskPageMap:

Constructor & Destructor Documentation

ROnDiskPageMap() [1/3]

ROOT::Internal::ROnDiskPageMap::ROnDiskPageMap ( )

default

ROnDiskPageMap() [2/3]

ROOT::Internal::ROnDiskPageMap::ROnDiskPageMap ( const ROnDiskPageMap & other )

delete

ROnDiskPageMap() [3/3]

ROOT::Internal::ROnDiskPageMap::ROnDiskPageMap ( ROnDiskPageMap && other )

default

~ROnDiskPageMap()

ROOT::Internal::ROnDiskPageMap::~ROnDiskPageMap ( )

virtualdefault

Member Function Documentation

operator=() [1/2]

ROnDiskPageMap & ROOT::Internal::ROnDiskPageMap::operator= ( const ROnDiskPageMap & other )

delete

operator=() [2/2]

ROnDiskPageMap & ROOT::Internal::ROnDiskPageMap::operator= ( ROnDiskPageMap && other )

default

Register()

void ROOT::Internal::ROnDiskPageMap::Register ( const ROnDiskPage::Key & key, const ROnDiskPage & onDiskPage )

inline

Inserts information about a page stored in fMemory.

Therefore, the address referenced by onDiskPage needs to be owned by the page map (see derived classes). If a page map contains a page of a given column, it is expected that all the pages of that column in that cluster are part of the page map.

Definition at line 115 of file RCluster.hxx.

Friends And Related Symbol Documentation

RCluster

friend class RCluster

friend

Definition at line 99 of file RCluster.hxx.

Member Data Documentation

fOnDiskPages

std::unordered_map<ROnDiskPage::Key, ROnDiskPage> ROOT::Internal::ROnDiskPageMap::fOnDiskPages

private

Definition at line 102 of file RCluster.hxx.

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

• tree/ntuple/inc/ROOT/RCluster.hxx
• tree/ntuple/src/RCluster.cxx