Ring buffer for TTrees in online data analysis

Jens Paetzold (paetzold@pit.physik.uni-tuebingen.de)
Sun, 16 Aug 1998 20:53:01 +0200 (MET DST)

Hello,

I would like to change for an online analyzer from paw to root.
We have the HBOOK ring buffer for row wise ntuples used up to now.
I have already managed to use TMapFile for the shared memory section with
histogramms. Now I would like to use also TTrees.
My question: Is there a simple way to implement a feature like this ring
buffer for TTrees on a TMapFile? Maybe I have not discovered it yet?
Or is there some idea for the implementation of this?

Thanks, Jens