[heap] Simplify adjusting of live bytes.

src/heap/heap.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_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 538 matching lines @@
 #undef ROOT_INDEX_DECLARATION
         kRootListLength,
     kStrongRootListLength = kStringTableRootIndex,
     kSmiRootsStart = kStringTableRootIndex + 1
   };
 
   enum FindMementoMode { kForRuntime, kForGC };
 
   enum HeapState { NOT_IN_GC, SCAVENGE, MARK_COMPACT };
 
-  // Indicates whether live bytes adjustment is triggered
-  // - from within the GC code before sweeping started (SEQUENTIAL_TO_SWEEPER),
-  // - or from within GC (CONCURRENT_TO_SWEEPER),
-  // - or mutator code (CONCURRENT_TO_SWEEPER).
-  enum InvocationMode { SEQUENTIAL_TO_SWEEPER, CONCURRENT_TO_SWEEPER };
-
   enum UpdateAllocationSiteMode { kGlobal, kCached };
 
   // Taking this lock prevents the GC from entering a phase that relocates
   // object references.
   class RelocationLock {
    public:
     explicit RelocationLock(Heap* heap) : heap_(heap) {
       heap_->relocation_mutex_.Lock();
     }
 
@@ skipping 169 matching lines @@
   // pass ClearRecordedSlots::kNo. If the filler was created in a black area
   // we may want to clear the corresponding mark bits with ClearBlackArea::kYes,
   // which is the default. ClearBlackArea::kNo does not clear the mark bits.
   void CreateFillerObjectAt(
       Address addr, int size, ClearRecordedSlots mode,
       ClearBlackArea black_area_mode = ClearBlackArea::kYes);
 
   bool CanMoveObjectStart(HeapObject* object);
 
   // Maintain consistency of live bytes during incremental marking.
-  void AdjustLiveBytes(HeapObject* object, int by, InvocationMode mode);
+  void AdjustLiveBytes(HeapObject* object, int by);
 
   // Trim the given array from the left. Note that this relocates the object
   // start and hence is only valid if there is only a single reference to it.
   FixedArrayBase* LeftTrimFixedArray(FixedArrayBase* obj, int elements_to_trim);
 
   // Trim the given array from the right.
-  template<Heap::InvocationMode mode>
   void RightTrimFixedArray(FixedArrayBase* obj, int elements_to_trim);
 
   // Converts the given boolean condition to JavaScript boolean value.
   inline Oddball* ToBoolean(bool condition);
 
   // Check whether the heap is currently iterable.
   bool IsHeapIterable();
 
   // Notify the heap that a context has been disposed.
   int NotifyContextDisposed(bool dependant_context);
@@ skipping 1867 matching lines @@
   friend class LargeObjectSpace;
   friend class NewSpace;
   friend class PagedSpace;
   DISALLOW_COPY_AND_ASSIGN(AllocationObserver);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_HEAP_H_