Lazily move units from active_units to stale_units
to avoid SEGV like http://ci.rvm.jp/results/trunk-mjit@phosphorus-docker/3289588 by a race condition between mjit_recompile and compation around active_units
Lazily move units from active_units to stale_units
to avoid SEGV like
http://ci.rvm.jp/results/trunk-mjit@phosphorus-docker/3289588
by a race condition between mjit_recompile and compation around active_units