Would it be possible to write RNTuples to a memory location instead of to disk, as TMapfile enables with histograms and TTrees? I know TMapfile works by intercepting data streams which aren’t used for the main data in RNTuples so the underlying mechanism of how data is written to memory would have to be changed.
ROOT Version: Any
Platform: Any
Compiler: Any
What is your goal in writing it to memory? One possibility is to use a TMemFile.
Thank you. I have tried this. I do need the data read by a display tool that we created, so for RNTuples, I first have to a TMemFile, then serialize the entire file’s bytes, wrap those bytes into a TObjString, turn those into a stream, and then publish that stream through a TMapFile, which gets read by the viewer. Our viewer cannot read TMemFiles directly.