edm::roottree Namespace Reference

Classes
struct	BranchInfo
class	BranchMap

Typedefs
using	EntryNumber = IndexIntoFile::EntryNumber_t

Functions
Int_t	getEntry (TBranch *branch, EntryNumber entryNumber)
Int_t	getEntry (TTree *tree, EntryNumber entryNumber)
std::unique_ptr< TTreeCache >	trainCache (TTree *tree, InputFile &file, unsigned int cacheSize, char const *branchNames)

Variables
unsigned int const	defaultCacheSize = 20U * 1024 * 1024
unsigned int const	defaultLearningEntries = 20U
unsigned int const	defaultNonEventCacheSize = 1U * 1024 * 1024
unsigned int const	defaultNonEventLearningEntries = 1U

Typedef Documentation

EntryNumber

using edm::roottree::EntryNumber = typedef IndexIntoFile::EntryNumber_t

Definition at line 42 of file RootTree.h.

Function Documentation

getEntry() [1/2]

Int_t edm::roottree::getEntry	(	TBranch *	branch,
		EntryNumber	entryNumber
	)

Definition at line 527 of file RootTree.cc.

References MicroEventContent_cff::branch, MillePedeFileConverter_cfg::e, Exception, edm::errors::FileReadError, and dqmiodumpmetadata::n.

Referenced by edm::RootTree::fillBranchEntryMeta(), edm::RootFile::fillEventHistory(), edm::RootFile::readEntryDescriptionTree(), edm::RootFile::readParentageTree(), edm::OldProvenanceReader::readProvenance(), edm::RootFile::RootFile(), and CaloSD::update().

                                                             {
      Int_t n = 0;
      try {
        n = branch->GetEntry(entryNumber);
      } catch (cms::Exception const& e) {
        throw Exception(errors::FileReadError, "", e);
      }
      return n;
    }

getEntry() [2/2]

Int_t edm::roottree::getEntry	(	TTree *	tree,
		EntryNumber	entryNumber
	)

Definition at line 537 of file RootTree.cc.

References MillePedeFileConverter_cfg::e, Exception, edm::errors::FileReadError, and dqmiodumpmetadata::n.

                                                         {
      Int_t n = 0;
      try {
        n = tree->GetEntry(entryNumber);
      } catch (cms::Exception const& e) {
        throw Exception(errors::FileReadError, "", e);
      }
      return n;
    }

trainCache()

std::unique_ptr< TTreeCache > edm::roottree::trainCache	(	TTree *	tree,
		InputFile &	file,
		unsigned int	cacheSize,
		char const *	branchNames
	)

Definition at line 547 of file RootTree.cc.

References haddnano::branchNames, and geometryDiff::file.

Referenced by edm::RootFile::RootFile().

                                                                    {
      tree->LoadTree(0);
      tree->SetCacheSize(cacheSize);
      std::unique_ptr<TTreeCache> treeCache(dynamic_cast<TTreeCache*>(file.GetCacheRead()));
      if (nullptr != treeCache.get()) {
        treeCache->StartLearningPhase();
        treeCache->SetEntryRange(0, tree->GetEntries());
        treeCache->AddBranch(branchNames, kTRUE);
        treeCache->StopLearningPhase();
      }
      // We own the treeCache_.
      // We make sure the treeCache_ is detached from the file,
      // so that ROOT does not also delete it.
      file.SetCacheRead(nullptr);
      return treeCache;
    }

Variable Documentation

defaultCacheSize

unsigned int const edm::roottree::defaultCacheSize = 20U * 1024 * 1024

Definition at line 38 of file RootTree.h.

Referenced by edm::RootPrimaryFileSequence::fillDescription(), edm::RootEmbeddedFileSequence::fillDescription(), and edm::RepeatingCachedRootSource::makeRootFile().

defaultLearningEntries

unsigned int const edm::roottree::defaultLearningEntries = 20U

Definition at line 40 of file RootTree.h.

defaultNonEventCacheSize

unsigned int const edm::roottree::defaultNonEventCacheSize = 1U * 1024 * 1024

Definition at line 39 of file RootTree.h.

Referenced by edm::RootFile::makeProcessBlockRootTrees(), and edm::RootFile::RootFile().

defaultNonEventLearningEntries

unsigned int const edm::roottree::defaultNonEventLearningEntries = 1U

Definition at line 41 of file RootTree.h.

Referenced by edm::RootFile::makeProcessBlockRootTrees().