Perform incremental marking step after free-list allocation and clean-up incremental marking start …

src/incremental-marking.h

 // Copyright 2012 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 57 matching lines @@
   inline bool IsStopped() { return state() == STOPPED; }
 
   INLINE(bool IsMarking()) { return state() >= MARKING; }
 
   inline bool IsMarkingIncomplete() { return state() == MARKING; }
 
   inline bool IsComplete() { return state() == COMPLETE; }
 
   bool WorthActivating();
 
-  void Start();
+  enum CompactionFlag { ALLOW_COMPACTION, PREVENT_COMPACTION };
+
+  void Start(CompactionFlag flag = ALLOW_COMPACTION);
 
   void Stop();
 
   void PrepareForScavenge();
 
   void UpdateMarkingDequeAfterScavenge();
 
   void Hurry();
 
   void Finalize();
@@ skipping 127 matching lines @@
     no_marking_scope_depth_--;
   }
 
   void UncommitMarkingDeque();
 
  private:
   int64_t SpaceLeftInOldSpace();
 
   void ResetStepCounters();
 
-  enum CompactionFlag { ALLOW_COMPACTION, PREVENT_COMPACTION };
-
   void StartMarking(CompactionFlag flag);
 
   void ActivateIncrementalWriteBarrier(PagedSpace* space);
   static void ActivateIncrementalWriteBarrier(NewSpace* space);
   void ActivateIncrementalWriteBarrier();
 
   static void DeactivateIncrementalWriteBarrierForSpace(PagedSpace* space);
   static void DeactivateIncrementalWriteBarrierForSpace(NewSpace* space);
   void DeactivateIncrementalWriteBarrier();
 
@@ skipping 35 matching lines @@
   intptr_t write_barriers_invoked_since_last_step_;
 
   int no_marking_scope_depth_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(IncrementalMarking);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_INCREMENTAL_MARKING_H_