lib/skylight/messages/trace.rb in skylight-0.1.4.alpha2 vs lib/skylight/messages/trace.rb in skylight-0.1.4.alpha3

@@ -67,11 +67,11 @@
         end
 
         def record(time, cat, title = nil, desc = nil, annot = {})
           return if @busted
 
-          track_time(time)
+          time = adjust_for_skew(time)
 
           sp = span(time, cat, title, desc, annot)
 
           return self if :skip == sp
 
@@ -82,11 +82,11 @@
         end
 
         def start(time, cat, title = nil, desc = nil, annot = {})
           return if @busted
 
-          track_time(time)
+          time = adjust_for_skew(time)
 
           sp = span(time, cat, title, desc, annot)
 
           push(sp)
 
@@ -94,11 +94,11 @@
         end
 
         def stop(time)
           return if @busted
 
-          track_time(time)
+          time = adjust_for_skew(time)
 
           sp = pop
 
           return self if :skip == sp
 
@@ -184,18 +184,18 @@
           else
             ((time - @start) / 100).to_i
           end
         end
 
-        def track_time(time)
-          if time < @last_seen_time
-            @busted = true
-            raise TraceError, "time moving backwards; " \
-              "prev=#{@last_seen_time}; " \
-              "curr=#{time}"
+        # Sadely, we don't have access to a pure monotonic clock in ruby, so we
+        # need to cheat a little.
+        def adjust_for_skew(time)
+          if time <= @last_seen_time
+            return @last_seen_time
           end
 
           @last_seen_time = time
+          time
         end
 
       end
 
     end