16#ifndef ROOT7_RPageStorageFile
17#define ROOT7_RPageStorageFile
40namespace Experimental {
45class RPageAllocatorHeap;
60 std::unique_ptr<RNTupleFileWriter>
fWriter;
66 std::size_t bytesPacked);
70 void InitImpl(
unsigned char *serializedHeader, std::uint32_t
length)
final;
74 std::vector<RNTupleLocator>
CommitSealedPageVImpl(std::span<RPageStorage::RSealedPageGroup> ranges)
final;
111 std::uint64_t fColumnOffset = 0;
117 std::unique_ptr<ROOT::Internal::RRawFile>
fFile;
126 void InitDescriptor(
const RNTuple &anchor);
137 std::unique_ptr<RCluster> PrepareSingleCluster(
139 std::vector<ROOT::Internal::RRawFile::RIOVec> &readRequests);
168 std::vector<std::unique_ptr<
RCluster>> LoadClusters(std::span<
RCluster::RKey> clusterKeys) final;
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t WindowAttributes_t Float_t Float_t Float_t Int_t Int_t UInt_t UInt_t Rectangle_t Int_t Int_t Window_t TString Int_t GCValues_t GetPrimarySelectionOwner GetDisplay GetScreen GetColormap GetNativeEvent const char const char dpyName wid window const char font_name cursor keysym reg const char only_if_exist regb h Point_t winding char text const char depth char const char Int_t count const char ColorStruct_t color const char Pixmap_t Pixmap_t PictureAttributes_t attr const char char ret_data h unsigned char height h length
An in-memory subset of the packed and compressed pages of a cluster.
Read RNTuple data blocks from a TFile container, provided by a RRawFile.
A helper class for piece-wise construction of an RNTupleDescriptor.
Base class for a sink with a physical storage backend.
virtual void InitImpl(unsigned char *serializedHeader, std::uint32_t length)=0
Storage provider that write ntuple pages into a file.
void ReleasePage(RPage &page) final
Every page store needs to be able to free pages it handed out.
std::vector< RNTupleLocator > CommitSealedPageVImpl(std::span< RPageStorage::RSealedPageGroup > ranges) final
Vector commit of preprocessed pages.
std::uint64_t CommitClusterImpl() final
Returns the number of bytes written to storage (excluding metadata)
std::uint64_t fNBytesCurrentCluster
Number of bytes committed to storage in the current cluster.
RNTupleLocator WriteSealedPage(const RPageStorage::RSealedPage &sealedPage, std::size_t bytesPacked)
void InitImpl(unsigned char *serializedHeader, std::uint32_t length) final
RPage ReservePage(ColumnHandle_t columnHandle, std::size_t nElements) final
Get a new, empty page for the given column that can be filled with up to nElements.
std::unique_ptr< RPageAllocatorHeap > fPageAllocator
RNTupleLocator CommitPageImpl(ColumnHandle_t columnHandle, const RPage &page) final
RNTupleLocator CommitSealedPageImpl(DescriptorId_t physicalColumnId, const RPageStorage::RSealedPage &sealedPage) final
RNTupleLocator CommitClusterGroupImpl(unsigned char *serializedPageList, std::uint32_t length) final
Returns the locator of the page list envelope of the given buffer that contains the serialized page l...
std::unique_ptr< RNTupleFileWriter > fWriter
void CommitDatasetImpl() final
Storage provider that reads ntuple pages from a file.
RNTupleDescriptorBuilder fDescriptorBuilder
The descriptor is created from the header and footer either in AttachImpl or in CreateFromAnchor.
std::unique_ptr< RClusterPool > fClusterPool
The cluster pool asynchronously preloads the next few clusters.
RMiniFileReader fReader
Takes the fFile to read ntuple blobs from it.
std::unique_ptr< ROOT::Internal::RRawFile > fFile
An RRawFile is used to request the necessary byte ranges from a local or a remote file.
Abstract interface to read data from an ntuple.
A page is a slice of a column that is mapped into memory.
Addresses a column element or field item relative to a particular cluster, instead of a global NTuple...
The on-storage meta-data of an ntuple.
Common user-tunable settings for reading ntuples.
Common user-tunable settings for storing ntuples.
Representation of an RNTuple data set in a ROOT file.
The RRawFile provides read-only access to local and remote files.
A ROOT file is an on-disk file, usually with extension .root, that stores objects in a file-system-li...
std::uint64_t NTupleSize_t
Integer type long enough to hold the maximum number of entries in a column.
std::uint64_t DescriptorId_t
Distriniguishes elements of the same type within a descriptor, e.g. different fields.
tbb::task_arena is an alias of tbb::interface7::task_arena, which doesn't allow to forward declare tb...
The identifiers that specifies the content of a (partial) cluster.
Summarizes cluster-level information that are necessary to populate a certain page.
RClusterDescriptor::RPageRange::RPageInfoExtended fPageInfo
Location of the page on disk.
A sealed page contains the bytes of a page as written to storage (packed & compressed).
Generic information about the physical location of data.