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// $Id: TreeWriter.cc,v 1.16 2009/03/23 22:15:11 loizides Exp $
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#include "MitAna/DataUtil/interface/TreeWriter.h"
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#include <Riostream.h>
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#include <TObject.h>
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#include <TSystem.h>
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#include <TProcessID.h>
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#include <TBranchRef.h>
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#include "MitAna/DataUtil/interface/Debug.h"
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using namespace mithep;
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ClassImp(mithep::TreeWriter)
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//__________________________________________________________________________________________________
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TreeWriter::TreeWriter(const char *tname, Bool_t doreset) :
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TNamed(tname,Form("%s written by mithep::TreeWriter", tname)),
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fBaseURL("."),
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fPrefix("mithep"),
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fFileNumber(0),
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fCompressLevel(9),
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fDefBrSize(64*1024),
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fDefSL(99),
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fMaxSize((Long64_t)(0.99 * TTree::GetMaxTreeSize())),
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fkMinFreeSpace(1024*1024),
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fkMinAvgSize(10*1024),
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fEvtObjNum(-1),
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fIsInit(kFALSE),
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fDoObjNumReset(doreset),
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fDoBranchRef(0),
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fFile(0),
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fTrees(0)
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{
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// Constructor.
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fTrees.SetOwner();
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}
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//__________________________________________________________________________________________________
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TreeWriter::~TreeWriter()
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{
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// Destructor.
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Terminate();
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}
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//__________________________________________________________________________________________________
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void TreeWriter::AddBranch(const char *name, const char *cname,
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void *obj, Int_t bsize, Int_t level)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer for class name "cname" using a given buffer size and splitlevel.
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MyTree *t = AddOrGetMyTree(GetName());
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TBranch *b = t->Bronch(name, cname, obj, bsize, level);
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b->SetCompressionLevel(GetCompressLevel());
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddBranch(const char *name, void *obj, Int_t bsize, Int_t level)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer using a given buffer size and splitlevel.
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AddBranch(name, CName(obj), obj, bsize, level);
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddBranch(const char *name, const char *cname,
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void *obj, Int_t bsize)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer for class name "cname" using a given buffer size and default splitlevel.
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MyTree *t = AddOrGetMyTree(GetName());
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TBranch *b = t->Bronch(name, cname, obj, bsize, fDefSL);
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b->SetCompressionLevel(GetCompressLevel());
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddBranch(const char *name, void *obj, Int_t bsize)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer using a given buffer size and default splitlevel.
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AddBranch(name, CName(obj), obj, bsize);
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddBranch(const char *name, const char *cname,
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void *obj)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer for class name "cname" using a default buffer size and splitlevel.
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MyTree *t = AddOrGetMyTree(GetName());
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TBranch *b = t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
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b->SetCompressionLevel(GetCompressLevel());
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddBranch(const char *name, void *obj)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer using a default buffer size and splitlevel.
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AddBranch(name, CName(obj), obj);
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname,
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void *obj, Int_t bsize, Int_t level)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer for class name "cname" using a given buffer size and splitlevel.
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MyTree *t = AddOrGetMyTree(tname);
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TBranch *b = t->Bronch(name, cname, obj, bsize, level);
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b->SetCompressionLevel(GetCompressLevel());
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj,
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Int_t bsize, Int_t level)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer using a given buffer size and splitlevel.
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AddBranchToTree(tname, name, CName(obj), obj, bsize, level);
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname,
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void *obj, Int_t bsize)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer for class name "cname" using a given buffer size and default splitlevel.
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MyTree *t = AddOrGetMyTree(tname);
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TBranch *b = t->Bronch(name, cname, obj, bsize, fDefSL);
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b->SetCompressionLevel(GetCompressLevel());
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj,
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Int_t bsize)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer using a given buffer size and default splitlevel.
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AddBranchToTree(tname, name, CName(obj), obj, bsize);
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname,
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void *obj)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer for class name "cname" using a default buffer size and splitlevel.
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MyTree *t = AddOrGetMyTree(tname);
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TBranch *b = t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
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b->SetCompressionLevel(GetCompressLevel());
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj)
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{
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// Add branch with name "name" into tree with name "tname" and set its address
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// to object pointer for class name "cname" using a default buffer size and splitlevel.
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AddBranchToTree(tname, name, CName(obj), obj);
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::AddTree(const char *tname)
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{
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// Add tree with name "name" into tree with name "tname".
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AddOrGetMyTree(tname);
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}
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//--------------------------------------------------------------------------------------------------
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MyTree *TreeWriter::AddOrGetMyTree(const char *tn)
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{
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// Add new tree if not present in array of trees or return
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// present tree.
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MyTree *tree = GetMyTree(tn);
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if (tree)
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return tree;
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TDirectory::TContext context(fFile);
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tree = new MyTree(tn, tn);
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tree->SetDirectory(fFile);
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if (fDoBranchRef)
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tree->BranchRef();
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fTrees.AddLast(tree);
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return tree;
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}
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//--------------------------------------------------------------------------------------------------
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Bool_t TreeWriter::BeginEvent(Bool_t doreset)
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{
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// Prepare for the next event. If doreset or fDoObjNumReset is kTRUE
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// store the current object number to be reset in FillEvent().
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if (!fIsInit) {
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OpenFile();
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}
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if (doreset || fDoObjNumReset) {
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fEvtObjNum = TProcessID::GetObjectCount();
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}
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return kTRUE;
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::CloseFile()
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{
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// Write tree(s) and close file.
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if (!fIsInit) {
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Fatal("CloseFile", "File was not opened, call OpenFile() first!");
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return;
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}
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TDirectory::TContext context(fFile); // cd fFile &&
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// automatically restore gDirectory
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for (Int_t i=0;i<fTrees.GetEntries();++i) {
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MyTree *mt = static_cast<MyTree*>(fTrees.At(i));
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mt->FlushBaskets();
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mt->Write(mt->GetName(),TObject::kOverwrite);
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// backup and restore list of branch pointers from TRefTable (needed for autoloading)
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if (mt->GetBranchRef()) {
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TObjArray *parents = mt->GetBranchRef()->GetRefTable()->GetParents();
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TObjArray parentsBak(*parents);
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mt->Reset();
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for (Int_t j=0; j<parentsBak.GetEntries(); ++j)
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parents->Add(parentsBak.At(j));
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}
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else
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mt->Reset();
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mt->SetDirectory(0);
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}
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fFile->Close();
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delete fFile;
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fFile = 0;
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fIsInit = kFALSE;
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fFileNumber++;
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}
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//--------------------------------------------------------------------------------------------------
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const char *TreeWriter::CName(void *obj) const
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{
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// Dereference void* pointer into TObject* pointer
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TObject **sobj = static_cast<TObject**>(obj);
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TObject *tobj = dynamic_cast<TObject*>(*sobj);
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if (tobj==0) {
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Fatal("CName", "Given void* ptr cannot be dereferenced into TObject*");
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}
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return tobj->ClassName();
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}
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//--------------------------------------------------------------------------------------------------
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void TreeWriter::DoBranchRef(const char *tn)
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{
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// Fill BranchRef for given tree.
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if (fTrees.GetEntries()==0) {
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Error("DoBranchRef", "Tree with name %s not found!", tn);
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return;
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}
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MyTree *mt = GetMyTree(tn);
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if (!mt)
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return;
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mt->BranchRef();
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}
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//--------------------------------------------------------------------------------------------------
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Bool_t TreeWriter::EndEvent(Bool_t doreset)
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{
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// Store the event in the tree. If doreset or fDoObjNumReset is kTRUE
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// restore the stored object number at the time BeginEvent(kTRUE)
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// was called.
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if (!fIsInit) {
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Fatal("EndEvent", "File is not open, did you call BeginEvent?");
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return kFALSE;
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}
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Int_t r = 0;
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for (Int_t i=0;i<fTrees.GetEntries();++i) {
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MyTree *mt = static_cast<MyTree*>(fTrees.At(i));
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if (mt->GetAutoFill()==0)
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continue;
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r += mt->Fill();
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}
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if (IsFull())
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CloseFile();
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if (doreset || fDoObjNumReset) {
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if (fEvtObjNum<0) {
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Error("EndEvent", "Object counter is zero. Did you call BeginEvent(kTRUE)?");
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} else {
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// Reset the TRef table. Keep it from growing with each event (see doc)
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TProcessID::SetObjectCount(fEvtObjNum);
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}
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}
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return (r >= 0);
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}
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//--------------------------------------------------------------------------------------------------
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Long64_t TreeWriter::GetEntries(const char *tn) const
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{
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// Return entries of tree with given name. If no tree is given, return sum of entries
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// of all trees.
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if (fTrees.GetEntries()==0) return -1;
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if (tn) {
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const TTree *mt=GetTree(tn);
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if (mt)
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return mt->GetEntries();
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else
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return -1;
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}
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Long64_t ret = 0;
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for (Int_t i=0;i<fTrees.GetEntries();++i) {
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const MyTree *mt = static_cast<const MyTree*>(fTrees.At(i));
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ret += mt->GetEntries();
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}
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return ret;
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}
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//--------------------------------------------------------------------------------------------------
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MyTree *mithep::TreeWriter::GetMyTree(const char *tn)
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{
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// Return MyTree with given name from array.
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if (fTrees.GetEntries()==0)
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return 0;
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TObject *obj = 0;
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if (tn==0) {
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obj = fTrees.At(0);
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} else {
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obj = fTrees.FindObject(tn);
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}
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if (obj)
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return static_cast<MyTree*>(obj);
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return 0;
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}
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//--------------------------------------------------------------------------------------------------
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const TTree *mithep::TreeWriter::GetTree(const char *tn) const
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{
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// Return TTree with given name from array.
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if (fTrees.GetEntries()==0)
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return 0;
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TObject *obj = 0;
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if (tn==0) {
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obj = fTrees.At(0);
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} else {
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obj = fTrees.FindObject(tn);
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}
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if (obj)
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return dynamic_cast<const TTree*>(obj);
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return 0;
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}
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//--------------------------------------------------------------------------------------------------
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TTree *mithep::TreeWriter::GetTree(const char *tn)
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{
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// Return TTree with given name from array.
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if (fTrees.GetEntries()==0)
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return 0;
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TObject *obj = 0;
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if (tn==0) {
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obj = fTrees.At(0);
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} else {
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obj = fTrees.FindObject(tn);
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}
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if (obj)
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return dynamic_cast<TTree*>(obj);
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return 0;
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}
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//--------------------------------------------------------------------------------------------------
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Bool_t TreeWriter::IsFull() const
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{
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| 410 |
// Check if the maximum file size has been reached.
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| 412 |
Long64_t entries = GetEntries();
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if (entries < 1) return kFALSE;
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Long64_t avgSize = GetFileSize() / entries;
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if (avgSize < fkMinAvgSize)
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avgSize = fkMinAvgSize;
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| 420 |
return (GetFileSize() + avgSize + fkMinFreeSpace) > fMaxSize;
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| 421 |
}
|
| 422 |
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//--------------------------------------------------------------------------------------------------
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| 424 |
void TreeWriter::OpenFile()
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| 425 |
{
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| 426 |
// Open the file and attach the tree.
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| 427 |
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| 428 |
if (fIsInit) {
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| 429 |
Fatal("OpenFile", "File is already open, call CloseFile first!");
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| 430 |
return;
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| 431 |
}
|
| 432 |
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| 433 |
TDirectory::TContext context(0);
|
| 434 |
|
| 435 |
TString pathname=GetFullName();
|
| 436 |
gSystem->ExpandPathName(pathname);
|
| 437 |
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| 438 |
fFile = TFile::Open(pathname, "RECREATE");
|
| 439 |
if (fFile == 0) {
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| 440 |
Fatal("OpenFile", "Could not open file %s", pathname.Data());
|
| 441 |
return;
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}
|
| 443 |
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fFile->SetCompressionLevel(fCompressLevel);
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for (Int_t i=0;i<fTrees.GetEntries();++i) {
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MyTree *mt = static_cast<MyTree*>(fTrees.At(i));
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mt->SetDirectory(fFile);
|
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}
|
| 450 |
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fIsInit = kTRUE;
|
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}
|
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//--------------------------------------------------------------------------------------------------
|
| 455 |
void TreeWriter::Print(Option_t *option) const
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| 456 |
{
|
| 457 |
// Print the contents of the tree writer.
|
| 458 |
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| 459 |
if (option) {
|
| 460 |
cout << ClassName() << " with members " << endl;
|
| 461 |
cout << " fBaseURL: " << fBaseURL << endl;
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| 462 |
cout << " fPreFix: " << fPrefix << endl;
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| 463 |
cout << " fFileNumber: " << fFileNumber << endl;
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| 464 |
cout << " fCompressLevel: " << fCompressLevel << endl;
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| 465 |
cout << " fDefBrSize: " << fDefBrSize << endl;
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| 466 |
cout << " fDefSL: " << fDefSL << endl;
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| 467 |
cout << " fMaxSize: " << fMaxSize << endl;
|
| 468 |
cout << " fDoObjNumReset: " << fDoObjNumReset << endl;
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| 469 |
return;
|
| 470 |
}
|
| 471 |
|
| 472 |
cout << ClassName() << ": " << GetEntries()
|
| 473 |
<< (GetEntries() == 1 ? " event" : " events") << endl;
|
| 474 |
}
|
| 475 |
|
| 476 |
//--------------------------------------------------------------------------------------------------
|
| 477 |
void TreeWriter::SetAutoFill(const char *tn, Bool_t b)
|
| 478 |
{
|
| 479 |
// Set auto-fill mode of tree with given name.
|
| 480 |
|
| 481 |
if (fTrees.GetEntries()==0)
|
| 482 |
return;
|
| 483 |
|
| 484 |
MyTree *mt = GetMyTree(tn);
|
| 485 |
if (!mt)
|
| 486 |
return;
|
| 487 |
|
| 488 |
mt->SetAutoFill(b);
|
| 489 |
}
|
| 490 |
|
| 491 |
//--------------------------------------------------------------------------------------------------
|
| 492 |
void TreeWriter::SetMaxSize(Long64_t s)
|
| 493 |
{
|
| 494 |
// Set maximum file size. Check if this exceeds the ROOT file size and if,
|
| 495 |
// print a warning and adjust it.
|
| 496 |
|
| 497 |
if (s>=(Long64_t)(0.99 * TTree::GetMaxTreeSize())) {
|
| 498 |
Long64_t news = (Long64_t)(s/0.99);
|
| 499 |
Warning("SetMaxSize", "Maximum tree size increased from %lld to %lld",
|
| 500 |
TTree::GetMaxTreeSize(), news);
|
| 501 |
TTree::SetMaxTreeSize(news);
|
| 502 |
}
|
| 503 |
|
| 504 |
fMaxSize=s;
|
| 505 |
}
|
| 506 |
|
| 507 |
//--------------------------------------------------------------------------------------------------
|
| 508 |
void TreeWriter::StoreObject(const TObject *obj)
|
| 509 |
{
|
| 510 |
// Store object next to tree in file. Used to store the
|
| 511 |
// settings of how the tree was created.
|
| 512 |
|
| 513 |
if (!fIsInit) {
|
| 514 |
Fatal("StoreObject", "Tree is not created, call create first!");
|
| 515 |
return;
|
| 516 |
}
|
| 517 |
|
| 518 |
if (!obj) {
|
| 519 |
Fatal("StoreObject", "Ptr to TObject is null!");
|
| 520 |
return;
|
| 521 |
}
|
| 522 |
|
| 523 |
fFile->WriteTObject(obj,obj->GetName(),"WriteDelete");
|
| 524 |
}
|
| 525 |
|
| 526 |
//__________________________________________________________________________________________________
|
| 527 |
void TreeWriter::Terminate()
|
| 528 |
{
|
| 529 |
// Terminate tree file writing.
|
| 530 |
|
| 531 |
if (fIsInit) {
|
| 532 |
CloseFile();
|
| 533 |
}
|
| 534 |
|
| 535 |
TDirectory::TContext context(0);
|
| 536 |
fTrees.Clear();
|
| 537 |
}
|
