Log of /trunk/tree/tree/inc/TBasketSQL.h

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Revision 35231 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Fri Sep 10 17:59:10 2010 UTC (4 years, 4 months ago) by pcanal
File length: 2283 byte(s)
Diff to previous 26606

Dramatically reduce the amount of memory allocation induces by the management of the TBasket and TBuffer
for each branch.  Instead of creating one TBasket object and one TBuffer object and its associated memory buffer
for each onfile basket of each branch, we now create only one TBasket and one TBuffer object for the lifetime of
each branch.  The memory buffer associated with the TBuffer object is also created once and rarely reallocated;
it is reallocated only when the buffer size is reset (for example by the AutoFlush mechanism) and when the user
object do not fit in the currently allocated memory (but we do not shrink it after that.  The same minization 
is applied to the scratch area used to read the compressed version of a basket from the file.

In TBasket introduce new data member fCompressedBuffer and fCompressedSize to keep track of the scratch memory
area used to read compressed data from the file (Even though we already have fBufferRef and fBuffer from TKey,
they are too tied together to properly used in the case of long live TBasket).

Add a TBasket::Reset member function to return the basket to its original 'unread' or 'unfilled' state.

Add TBranch::GetFreshBasket to factor out the code deciding whether to create a new TBasket object or 
to reuse an existing one.

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Revision 26606 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Tue Dec 2 20:36:09 2008 UTC (6 years, 1 month ago) by pcanal
File length: 2255 byte(s)
Diff to previous 22902

Following Igor Smirnov analysis fix several memory leaks, add checks for null pointer dereference, fix or add copy constructor and assignment operator when applicable, make the copy constructor and assignment operator private when the objects are not intended to be copiable.

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Revision 22902 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Mar 31 09:48:42 2008 UTC (6 years, 9 months ago) by rdm
File length: 2068 byte(s)
Diff to previous 20882

move tree, treeplayer and treeviewer under tree meta directory.

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Revision 20882 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Nov 19 11:31:26 2007 UTC (7 years, 2 months ago) by rdm
Original Path: trunk/tree/inc/TBasketSQL.h
File length: 2068 byte(s)
Diff to previous 19826

Set property svn:eol-style LF on all source and Makefiles. This should avoid
problems with Win32 line endings ending up in the repository. All MS tools
support LF eols fine.

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Revision 19826 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Wed Sep 19 19:56:11 2007 UTC (7 years, 4 months ago) by rdm
Original Path: trunk/tree/inc/TBasketSQL.h
File length: 2068 byte(s)
Diff to previous 19825

imported svn:keywords Id property

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Revision 19825 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Wed Sep 19 19:49:10 2007 UTC (7 years, 4 months ago) by rdm
Original Path: trunk/tree/inc/TBasketSQL.h
File length: 2116 byte(s)
Diff to previous 12483

remove :$ from tag line

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Revision 12483 - (view) (download) (as text) (annotate) - [select for diffs]
Added Mon Aug 15 21:29:58 2005 UTC (9 years, 5 months ago) by pcanal
Original Path: trunk/tree/inc/TBasketSQL.h
File length: 2126 byte(s)

First version of TTreeSQL facility.
This allow the storing and restoring of TTree into an SQL database

  TSQLServer *dbserver = TSQLServer::Connect("mysql://localhost:3306/rootDev","rootdevel", "r00tg6ys");
  dbserver->Query("drop table ntuple;");
  ntuple  = new TTreeSQL(dbserver, "rootDev", "ntuple");

If the database contain a table named ntuple, this will connect to it
and let you use any of TTree functionality on (Scan, Draw, etc.)

If the database does not contain a table named ntuple, it will created
once you called the first Fill on the TTree.

This version supports the leaflist type of branches.