GC bug: letting Ruby free the generated DOF causes OSX at least to remove the probes we created. Stash a reference to the Dtrace::Dof::File object in the provider to avoid that.
GC bug: letting Ruby free the generated DOF causes OSX at least to
remove the probes we created. Stash a reference to the Dtrace::Dof::File
object in the provider to avoid that.

chrisa/ruby-dtrace,chrisa/ruby-dtrace