Syncronize all access to @timeouts. Fixes #208

lib/puma/reactor.rb

@@ -50,8 +50,10 @@ module Puma
               # list or we'll accidentally close the socket when
               # it's in use!
               if c.timeout_at
+                @mutex.synchronize do
                   @timeouts.delete c
                 end
+              end
 
               begin
                 if c.try_to_finish
@@ -78,6 +80,7 @@ module Puma
         end
 
         unless @timeouts.empty?
+          @mutex.synchronize do
             now = Time.now
 
             while @timeouts.first.timeout_at < now
@@ -91,6 +94,7 @@ module Puma
             calculate_sleep
           end
         end
+      end
     ensure
       @trigger.close
       @ready.close