Use the event-handler for timers.

src/vm/heap.h

Index: src/vm/heap.h
diff --git a/src/vm/heap.h b/src/vm/heap.h
index 8dbd6c14df40d5ecb152ded788ed631860000126..dd9eb639e6f63158f79ad4f641007a0b1df69c96 100644
--- a/src/vm/heap.h
+++ b/src/vm/heap.h
@@ -174,7 +174,7 @@ class ScavengeVisitor: public PointerVisitor {
   Space* to_;
 };
 
-// Extract a raw void* pointer from [object].
+// Read [object] as an integer word value.
 //
 // [object] must be either a Smi or a LargeInteger.
 inline word AsForeignWord(Object* object) {
@@ -183,6 +183,15 @@ inline word AsForeignWord(Object* object) {
       : LargeInteger::cast(object)->value();
 }
 
+// Read [object] as an integer int64 value.
+//
+// [object] must be either a Smi or a LargeInteger.
+inline int64 AsForeignInt64(Object* object) {
+  return object->IsSmi()
+      ? Smi::cast(object)->value()
+      : LargeInteger::cast(object)->value();
+}
+
 
 }  // namespace fletch