Only pass idle notifications on from the API if V8 has been...

src/mark-compact.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 58 matching lines @@
   // Prepare has selected whether to compact the old generation or not.
   // Tell the tracer.
   if (IsCompacting()) tracer_->set_is_compacting();
 
   MarkLiveObjects();
 
   if (FLAG_collect_maps) ClearNonLiveTransitions();
 
   SweepLargeObjectSpace();
 
-  if (compacting_collection_) {
+  if (IsCompacting()) {
     EncodeForwardingAddresses();
 
     UpdatePointers();
 
     RelocateObjects();
 
     RebuildRSets();
 
   } else {
     SweepSpaces();
@@ skipping 1744 matching lines @@
 
 void MarkCompactCollector::RebuildRSets() {
 #ifdef DEBUG
   ASSERT(state_ == RELOCATE_OBJECTS);
   state_ = REBUILD_RSETS;
 #endif
   Heap::RebuildRSets();
 }
 
 } }  // namespace v8::internal