lib/progress.rb in progress-3.1.0 vs lib/progress.rb in progress-3.1.1

@@ -58,10 +58,11 @@
     total = total && total != 0 ? Float(total) : 1.0
 
     @total = total
     @current = 0.0
     @title = title
+    @mutex = Mutex.new
   end
 
   def to_f(inner)
     inner = 1.0 if inner > 1.0
     inner *= @step if @step
@@ -75,20 +76,20 @@
     step = 1 if step.nil?
 
     @step = step
     @note = note
     ret = yield if block_given?
-    Thread.exclusive do
+    @mutex.synchronize do
       @current += step
     end
     ret
   end
 
   def set(new_current, note)
     @step = new_current - @current
     @note = note
     ret = yield if block_given?
-    Thread.exclusive do
+    @mutex.synchronize do
       @current = new_current
     end
     ret
   end
 end