# File lib/ruote/exp/fe_reserve.rb, line 83 def set_mutex target, var = locate_var(h.mutex_name) val = target.variables[var] # [ 'mutex', name, [ fei0, fei1, ... ] ] mutex = val ? val : [ 'mutex', var, [] ] mutex.last << h.fei target.variables[var] = mutex r = target.try_persist return set_mutex if r != nil if mutex.last.first == h.fei enter else persist_or_raise end end