A++ » INCLUDE » TTreeCache

class TTreeCache: public TFileCacheRead


TTreeCache

Specialization of TFileCacheRead for a TTree

Function Members (Methods)

public:
virtual~TTreeCache()
voidTObject::AbstractMethod(const char* method) const
virtual Int_tAddBranch(TBranch* b, Bool_t subgbranches = kFALSE)
virtual Int_tAddBranch(const char* branch, Bool_t subbranches = kFALSE)
virtual voidTFileCacheRead::AddNoCacheBytesRead(Long64_t len)
virtual voidTFileCacheRead::AddNoCacheReadCalls(Int_t reads)
virtual voidTObject::AppendPad(Option_t* option = "")
virtual voidTObject::Browse(TBrowser* b)
static TClass*Class()
virtual const char*TObject::ClassName() const
virtual voidTObject::Clear(Option_t* = "")
virtual TObject*TObject::Clone(const char* newname = "") const
virtual voidTFileCacheRead::Close(Option_t* option = "")
virtual Int_tTObject::Compare(const TObject* obj) const
virtual voidTObject::Copy(TObject& object) const
virtual voidTObject::Delete(Option_t* option = "")MENU
virtual voidDisable()
virtual Int_tTObject::DistancetoPrimitive(Int_t px, Int_t py)
virtual voidTObject::Draw(Option_t* option = "")
virtual voidTObject::DrawClass() constMENU
virtual TObject*TObject::DrawClone(Option_t* option = "") constMENU
virtual Int_tDropBranch(TBranch* b, Bool_t subbranches = kFALSE)
virtual Int_tDropBranch(const char* branch, Bool_t subbranches = kFALSE)
virtual voidTObject::Dump() constMENU
virtual voidEnable()
virtual voidTObject::Error(const char* method, const char* msgfmt) const
virtual voidTObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual voidTObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual voidTObject::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual voidTObject::Fatal(const char* method, const char* msgfmt) const
virtual Bool_tFillBuffer()
virtual TObject*TObject::FindObject(const char* name) const
virtual TObject*TObject::FindObject(const TObject* obj) const
virtual Int_tTFileCacheRead::GetBufferSize() const
virtual Long64_tTFileCacheRead::GetBytesRead() const
virtual Long64_tTFileCacheRead::GetBytesReadExtra() const
const TObjArray*GetCachedBranches() const
TTreeCache::EPrefillTypeGetConfiguredPrefillType() const
virtual Option_t*TObject::GetDrawOption() const
static Long_tTObject::GetDtorOnly()
Double_tGetEfficiency() const
Double_tGetEfficiencyRel() const
virtual Int_tGetEntryMax() const
virtual Int_tGetEntryMin() const
TFile*TFileCacheRead::GetFile() const
virtual const char*TObject::GetIconName() const
static Int_tGetLearnEntries()
virtual TTreeCache::EPrefillTypeGetLearnPrefill() const
virtual const char*TObject::GetName() const
virtual Long64_tTFileCacheRead::GetNoCacheBytesRead() const
virtual Int_tTFileCacheRead::GetNoCacheReadCalls() const
Int_tTFileCacheRead::GetNseek() const
Int_tTFileCacheRead::GetNtot() const
virtual char*TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_tTObject::GetObjectStat()
virtual Option_t*TObject::GetOption() const
Long64_tTFileCacheRead::GetPrefetchedBlocks() const
virtual TFilePrefetch*TFileCacheRead::GetPrefetchObj()
virtual Int_tTFileCacheRead::GetReadCalls() const
virtual const char*TObject::GetTitle() const
TTree*GetTree() const
virtual UInt_tTObject::GetUniqueID() const
virtual Int_tTFileCacheRead::GetUnzipBuffer(char**, Long64_t, Int_t, Bool_t*)
virtual Bool_tTObject::HandleTimer(TTimer* timer)
virtual ULong_tTObject::Hash() const
virtual voidTObject::Info(const char* method, const char* msgfmt) const
virtual Bool_tTObject::InheritsFrom(const char* classname) const
virtual Bool_tTObject::InheritsFrom(const TClass* cl) const
virtual voidTObject::Inspect() constMENU
voidTObject::InvertBit(UInt_t f)
virtual TClass*IsA() const
virtual Bool_tTFileCacheRead::IsAsyncReading() const
Bool_tIsAutoCreated() const
virtual Bool_tIsEnabled() const
virtual Bool_tTFileCacheRead::IsEnablePrefetching() const
virtual Bool_tTObject::IsEqual(const TObject* obj) const
virtual Bool_tTObject::IsFolder() const
virtual Bool_tIsLearning() const
Bool_tTObject::IsOnHeap() const
virtual Bool_tTObject::IsSortable() const
Bool_tTObject::IsZombie() const
virtual voidLearnPrefill()
virtual voidTObject::ls(Option_t* option = "") const
voidTObject::MayNotUse(const char* method) const
virtual Bool_tTObject::Notify()
voidTObject::Obsolete(const char* method, const char* asOfVers, const char* removedFromVers) const
voidTObject::operator delete(void* ptr)
voidTObject::operator delete(void* ptr, void* vp)
voidTObject::operator delete[](void* ptr)
voidTObject::operator delete[](void* ptr, void* vp)
void*TObject::operator new(size_t sz)
void*TObject::operator new(size_t sz, void* vp)
void*TObject::operator new[](size_t sz)
void*TObject::operator new[](size_t sz, void* vp)
virtual voidTObject::Paint(Option_t* option = "")
virtual voidTObject::Pop()
virtual voidTFileCacheRead::Prefetch(Long64_t pos, Int_t len)
virtual voidPrint(Option_t* option = "") const
virtual Int_tTObject::Read(const char* name)
virtual Int_tReadBuffer(char* buf, Long64_t pos, Int_t len)
virtual Int_tTFileCacheRead::ReadBufferExt(char* buf, Long64_t pos, Int_t len, Int_t& loc)
virtual Int_tTFileCacheRead::ReadBufferExtNormal(char* buf, Long64_t pos, Int_t len, Int_t& loc)
virtual Int_tTFileCacheRead::ReadBufferExtPrefetch(char* buf, Long64_t pos, Int_t len, Int_t& loc)
virtual Int_tReadBufferNormal(char* buf, Long64_t pos, Int_t len)
virtual Int_tReadBufferPrefetch(char* buf, Long64_t pos, Int_t len)
virtual voidTObject::RecursiveRemove(TObject* obj)
voidTObject::ResetBit(UInt_t f)
virtual voidResetCache()
virtual voidTObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU
virtual voidTObject::SavePrimitive(ostream& out, Option_t* option = "")
virtual voidTFileCacheRead::SecondPrefetch(Long64_t, Int_t)
virtual voidTFileCacheRead::SecondSort()
voidSetAutoCreated(Bool_t val)
voidTObject::SetBit(UInt_t f)
voidTObject::SetBit(UInt_t f, Bool_t set)
virtual Int_tSetBufferSize(Int_t buffersize)
virtual voidTObject::SetDrawOption(Option_t* option = "")MENU
static voidTObject::SetDtorOnly(void* obj)
virtual voidTFileCacheRead::SetEnablePrefetching(Bool_t setPrefetching = kFALSE)
virtual voidSetEntryRange(Long64_t emin, Long64_t emax)
virtual voidSetFile(TFile* file, TFile::ECacheAction action = TFile::kDisconnect)
static voidSetLearnEntries(Int_t n = 10)
virtual voidSetLearnPrefill(TTreeCache::EPrefillType type = kNoPrefill)
static voidTObject::SetObjectStat(Bool_t stat)
virtual voidTFileCacheRead::SetSkipZip(Bool_t = kTRUE)
virtual voidTObject::SetUniqueID(UInt_t uid)
virtual voidShowMembers(TMemberInspector& insp) const
virtual voidTFileCacheRead::Sort()
voidStartLearningPhase()
virtual voidStopLearningPhase()
virtual voidStreamer(TBuffer&)
voidStreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)
virtual voidTObject::SysError(const char* method, const char* msgfmt) const
Bool_tTObject::TestBit(UInt_t f) const
Int_tTObject::TestBits(UInt_t f) const
TTreeCache()
TTreeCache(TTree* tree, Int_t buffersize = 0)
virtual voidUpdateBranches(TTree* tree)
virtual voidTObject::UseCurrentStyle()
virtual voidTFileCacheRead::WaitFinishPrefetch()
virtual voidTObject::Warning(const char* method, const char* msgfmt) const
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const
protected:
virtual voidTObject::DoError(int level, const char* location, const char* fmt, va_list va) const
voidTObject::MakeZombie()
voidTFileCacheRead::SetEnablePrefetchingImpl(Bool_t setPrefetching = kFALSE)

Data Members

public:
static TTreeCache::EPrefillTypekAllBranches
static TObject::(anonymous)TObject::kBitMask
static TObject::EStatusBitsTObject::kCanDelete
static TObject::EStatusBitsTObject::kCannotPick
static TObject::EStatusBitsTObject::kHasUUID
static TObject::EStatusBitsTObject::kInvalidObject
static TObject::(anonymous)TObject::kIsOnHeap
static TObject::EStatusBitsTObject::kIsReferenced
static TObject::EStatusBitsTObject::kMustCleanup
static TObject::EStatusBitsTObject::kNoContextMenu
static TTreeCache::EPrefillTypekNoPrefill
static TObject::(anonymous)TObject::kNotDeleted
static TObject::EStatusBitsTObject::kObjInCanvas
static TObject::(anonymous)TObject::kOverwrite
static TObject::(anonymous)TObject::kSingleKey
static TObject::(anonymous)TObject::kWriteDelete
static TObject::(anonymous)TObject::kZombie
protected:
Bool_tTFileCacheRead::fAsyncReading
Bool_tfAutoCreated! true if cache was automatically created
Bool_tTFileCacheRead::fBIsSorted
Bool_tTFileCacheRead::fBIsTransferred
Int_t*TFileCacheRead::fBLen[fBNb]
Int_tTFileCacheRead::fBNb
Int_tTFileCacheRead::fBNseek
Int_tTFileCacheRead::fBNtot
Long64_t*TFileCacheRead::fBPos[fBNb]
Long64_t*TFileCacheRead::fBSeek[fBNseek]
Int_t*TFileCacheRead::fBSeekIndex[fBNseek]
Int_t*TFileCacheRead::fBSeekLen[fBNseek]
Int_t*TFileCacheRead::fBSeekPos[fBNseek]
Int_tTFileCacheRead::fBSeekSize
Long64_t*TFileCacheRead::fBSeekSort[fBNseek]
Int_t*TFileCacheRead::fBSeekSortLen[fBNseek]
TList*fBrNames! list of branch names in the cache
TObjArray*fBranches! List of branches to be stored in the cache
char*TFileCacheRead::fBuffer[fBufferSize] buffer of contiguous prefetched blocks
Int_tTFileCacheRead::fBufferLenCurrent buffer length (<= fBufferSize)
Int_tTFileCacheRead::fBufferSizeAllocated size of fBuffer (at a given time)
Int_tTFileCacheRead::fBufferSizeMinOriginal size of fBuffer
Long64_tTFileCacheRead::fBytesReadNumber of bytes read for this cache
Long64_tTFileCacheRead::fBytesReadExtraNumber of extra bytes (overhead) read by the readahead buffer
Bool_tTFileCacheRead::fEnablePrefetchingreading by prefetching asynchronously
Bool_tfEnabled! cache enabled for cached reading
Long64_tfEntryCurrent! current lowest entry number in the cache
Long64_tfEntryMax! last entry in the cache
Long64_tfEntryMin! first entry in the cache
Long64_tfEntryNext! next entry number where cache must be filled
TFile*TFileCacheRead::fFilePointer to file
Int_tfFillTimes! how many times we can fill the current buffer
Bool_tfFirstBuffer! true if first buffer is used for prefetching
Long64_tfFirstEntry! save the value of the first entry
Bool_tfFirstTime! save the fact that we processes the first entry
Bool_tfIsLearning! true if cache is in learning mode
Bool_tfIsManual! true if cache is StopLearningPhase was used
Bool_tTFileCacheRead::fIsSortedTrue if fSeek array is sorted
Bool_tTFileCacheRead::fIsTransferredTrue when fBuffer contains something valid
Int_t*TFileCacheRead::fLen[fNb] Length of long buffers
Int_tfNReadMissNumber of blocks read and not found in the cache
Int_tfNReadOkNumber of blocks read and found in the cache
Int_tfNReadPrefNumber of blocks that were prefetched
Int_tTFileCacheRead::fNbNumber of long buffers
Int_tfNbranches! Number of branches in the cache
Long64_tTFileCacheRead::fNoCacheBytesReadNumber of bytes read by basket to fill cached tree
Int_tTFileCacheRead::fNoCacheReadCallsNumber of read calls by basket to fill cached tree
Int_tTFileCacheRead::fNseekNumber of blocks to be prefetched
Int_tTFileCacheRead::fNtotTotal size of prefetched blocks
Bool_tfOneTime! used in the learning phase
Long64_t*TFileCacheRead::fPos[fNb] start of long buffers
TFilePrefetch*TFileCacheRead::fPrefetch! Object that does the asynchronous reading in another thread
Long64_tTFileCacheRead::fPrefetchedBlocksNumber of blocks prefetched.
TTreeCache::EPrefillTypefPrefillTypeWhether a pre-filling is enabled (and if applicable which type)
Int_tTFileCacheRead::fReadCallsNumber of read calls for this cache
Bool_tfReadDirectionSet! read direction established
Bool_tfReverseRead! reading in reverse mode
Long64_t*TFileCacheRead::fSeek[fNseek] Position on file of buffers to be prefetched
Int_t*TFileCacheRead::fSeekIndex[fNseek] sorted index table of fSeek
Int_t*TFileCacheRead::fSeekLen[fNseek] Length of buffers to be prefetched
Int_t*TFileCacheRead::fSeekPos[fNseek] Position of sorted blocks in fBuffer
Int_tTFileCacheRead::fSeekSizeAllocated size of fSeek
Long64_t*TFileCacheRead::fSeekSort[fNseek] Position on file of buffers to be prefetched (sorted)
Int_t*TFileCacheRead::fSeekSortLen[fNseek] Length of buffers to be prefetched (sorted)
TTree*fTree! pointer to the current Tree
static Int_tfgLearnEntriesnumber of entries used for learning mode

Class Charts

Inheritance Chart:
TObject
←
TFileCacheRead
←
TTreeCache
←
TTreeCacheUnzip

Function documentation

TTreeCache(const TTreeCache& )
TTreeCache& operator=(const TTreeCache& )
TTreeCache()
TTreeCache(TTree* tree, Int_t buffersize = 0)
virtual ~TTreeCache()
Int_t AddBranch(TBranch* b, Bool_t subgbranches = kFALSE)
Int_t AddBranch(const char* branch, Bool_t subbranches = kFALSE)
Int_t DropBranch(TBranch* b, Bool_t subbranches = kFALSE)
Int_t DropBranch(const char* branch, Bool_t subbranches = kFALSE)
void Disable()
{fEnabled = kFALSE;}
void Enable()
{fEnabled = kTRUE;}
const TObjArray * GetCachedBranches() const
{ return fBranches; }
EPrefillType GetConfiguredPrefillType() const
Double_t GetEfficiency() const
Double_t GetEfficiencyRel() const
Int_t GetEntryMin() const
{return fEntryMin;}
Int_t GetEntryMax() const
{return fEntryMax;}
Int_t GetLearnEntries()
EPrefillType GetLearnPrefill() const
{return fPrefillType;}
TTree * GetTree() const
{return fTree;}
Bool_t IsAutoCreated() const
{return fAutoCreated;}
Bool_t IsEnabled() const
{return fEnabled;}
Bool_t IsLearning() const
{return fIsLearning;}
Bool_t FillBuffer()
void LearnPrefill()
void Print(Option_t* option = "") const
Int_t ReadBuffer(char* buf, Long64_t pos, Int_t len)
Int_t ReadBufferNormal(char* buf, Long64_t pos, Int_t len)
Int_t ReadBufferPrefetch(char* buf, Long64_t pos, Int_t len)
void ResetCache()
void SetAutoCreated(Bool_t val)
{fAutoCreated = val;}
Int_t SetBufferSize(Int_t buffersize)
void SetEntryRange(Long64_t emin, Long64_t emax)
void SetFile(TFile* file, TFile::ECacheAction action = TFile::kDisconnect)
void SetLearnPrefill(TTreeCache::EPrefillType type = kNoPrefill)
void SetLearnEntries(Int_t n = 10)
void StartLearningPhase()
void StopLearningPhase()
void UpdateBranches(TTree* tree)