Speaker
Dr
Elliott Wolin
(Jefferson Lab)
Description
EVIO is a lightweight event I/O package consisting of an
object-oriented layer on top of a pre-existing, highly efficient,
C-based event I/O package. The latter, part of the JLab CODA package,
has been in use in JLab high-speed DAQ systems for many years, but
other underlying disk I/O packages could be substituted. The event
format on disk, a packed tree-like hierarchy of banks, maps directly
to XML, so notions such as stream and DOM parsing directly apply. The
EVIO package transparently maps the packed binary representation on
disk to/from an object hierarchy or DOM tree in memory. The in-memory
tree can then be queried or modified using STL-like algorithms,
function objects, etc. Utility programs can transform between binary
and real XML (ASCII) format. EVIO will be used by the next
generation of JLab online and offline software systems.
| Submitted on behalf of Collaboration (ex, BaBar, ATLAS) | Jefferson Lab Data Acquisition Group |
|---|
Primary author
Dr
Elliott Wolin
(Jefferson Lab)
Co-authors
Dr
Carl Timmer
(Jefferson Lab)
Dr
David Abbott
(Jefferson Lab)
Dr
David Lawrence
(Jefferson Lab)
Dr
Edward Jastrzembski
(Jefferson Lab)
Dr
Graham Heyes
(Jefferson Lab)
Dr
Vardan Gurjyan
(Jefferson Lab)
