ruby: reset timing after cache warm up

Ruby system was recently converted to a clocked object. Such objects maintain
state related to the time that has passed so far. During the cache warmup, Ruby
system changes its own time and the global time. Later on, the global time is
restored. So Ruby system also needs to reset its own time.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/sim/clocked_object.hh b/src/sim/clocked_object.hh
index 78539c9c9..9a4c1034a 100644
--- a/src/sim/clocked_object.hh
+++ b/src/sim/clocked_object.hh
@@ -119,6 +119,18 @@ class ClockedObject : public SimObject
      */
     virtual ~ClockedObject() { }
 
+    /**
+     * Reset the object's clock using the current global tick value. Likely
+     * to be used only when the global clock is reset. Currently, this done
+     * only when Ruby is done warming up the memory system.
+     */
+    void resetClock() const
+    {
+        Cycles elapsedCycles(divCeil(curTick(), clock));
+        cycle = elapsedCycles;
+        tick = elapsedCycles * clock;
+    }
+
   public:
 
     /**