From Peter van Gemmeren:

Allow multiple read caches per file by adding a fCacheReadMap member and owner arguments to GetCacheRead() and SetCacheRead()
to TFile.

Index: io/io/inc/TFileCacheRead.h
Index: io/io/src/TFileCacheRead.cxx
* Adding new argument for constructor to specify TTree owner
* whitespace indents

Index: tree/tree/inc/TBasket.h
Index: tree/tree/src/TBasket.cxx
* Add optional tree owner argument to LoadBasketBuffers() to retrieve cache.
* In LoadBasketBuffers() and ReadBuffers() check the cache first than call TFile::ReadBuffer only if needed.

Index: tree/tree/inc/TChain.h
Index: tree/tree/src/TChain.cxx
* Override SetCacheSize() function to update TTree owner on the current cache.
* whitespace indents

Index: tree/tree/src/TTree.cxx
* Get TTreeCache for current TTree, by specifying owner in GetCacheRead() calls
* Always delete owned cache

Index: tree/tree/src/TTreeCache.cxx
* Adding new argument for constructor for TFileCacheRead to specify TTree owner

Index: tree/treeplayer/src/TTreePlayer.cxx
* Get TTreeCache for current TTree, by specifying owner in GetCacheRead() calls

Index: tree/tree/src/TTreeCloner.cxx
* Call TBasket::LoadBasketBuffers() with current TTree as owner of cache

Index: proof/proofplayer/src/TEventIter.cxx
* Get TTreeCache for current TTree, by specifying owner in GetCacheRead() and SetCacheRead() calls


git-svn-id: http://root.cern.ch/svn/root/trunk@42754 27541ba8-7e3a-0410-8455-c3a389f83636