[heap] Black allocation.

src/heap/incremental-marking.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HEAP_INCREMENTAL_MARKING_H_
 #define V8_HEAP_INCREMENTAL_MARKING_H_
 
 #include "src/cancelable-task.h"
 #include "src/execution.h"
 #include "src/heap/heap.h"
@@ skipping 190 matching lines @@
   void LeaveNoMarkingScope() { no_marking_scope_depth_--; }
 
   void NotifyIncompleteScanOfObject(int unscanned_bytes) {
     unscanned_bytes_of_large_object_ = unscanned_bytes;
   }
 
   void ClearIdleMarkingDelayCounter();
 
   bool IsIdleMarkingDelayCounterLimitReached();
 
-  INLINE(static void MarkObject(Heap* heap, HeapObject* object));
+  static void MarkObject(Heap* heap, HeapObject* object);
+
+  void IterateBlackObject(HeapObject* object);
 
   Heap* heap() const { return heap_; }
 
   IncrementalMarkingJob* incremental_marking_job() {
     return &incremental_marking_job_;
   }
 
+  bool black_allocation() { return black_allocation_; }
+
  private:
   class Observer : public AllocationObserver {
    public:
     Observer(IncrementalMarking& incremental_marking, intptr_t step_size)
         : AllocationObserver(step_size),
           incremental_marking_(incremental_marking) {}
 
     void Step(int bytes_allocated, Address, size_t) override {
       incremental_marking_.Step(bytes_allocated,
                                 IncrementalMarking::GC_VIA_STACK_GUARD);
     }
 
    private:
     IncrementalMarking& incremental_marking_;
   };
 
   int64_t SpaceLeftInOldSpace();
 
   void SpeedUp();
 
   void ResetStepCounters();
 
   void StartMarking();
 
+  void StartBlackAllocation();
+  void FinishBlackAllocation();
+
   void MarkRoots();
   void MarkObjectGroups();
   void ProcessWeakCells();
   // Retain dying maps for <FLAG_retain_maps_for_n_gc> garbage collections to
   // increase chances of reusing of map transition tree in future.
   void RetainMaps();
 
   void ActivateIncrementalWriteBarrier(PagedSpace* space);
   static void ActivateIncrementalWriteBarrier(NewSpace* space);
   void ActivateIncrementalWriteBarrier();
@@ skipping 32 matching lines @@
   intptr_t allocated_;
   intptr_t write_barriers_invoked_since_last_step_;
   size_t idle_marking_delay_counter_;
 
   int no_marking_scope_depth_;
 
   int unscanned_bytes_of_large_object_;
 
   bool was_activated_;
 
+  bool black_allocation_;
+
   bool finalize_marking_completed_;
 
   int incremental_marking_finalization_rounds_;
 
   GCRequestType request_type_;
 
   IncrementalMarkingJob incremental_marking_job_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(IncrementalMarking);
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_INCREMENTAL_MARKING_H_