cms-sw/cmssw — pull request #3512 by Dr15Jones (2014-04-25 19:31:51+00:00)
Title: Hack to make MultipleScatteringParametrisation thread safe

Converted the static being modified to be thread_local. However, this
is really just a hack since the static is being used as a 'global'
cache of EventSetup data which is not allowed. This change allows
us to move forward until an actual acceptable change can be made.