[heap] Fix IterateBlackObject for fixed arrays in large object space

src/heap/incremental-marking.cc

 // 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.
 
 #include "src/heap/incremental-marking.h"
 
 #include "src/code-stubs.h"
 #include "src/compilation-cache.h"
 #include "src/conversions.h"
 #include "src/heap/gc-idle-time-handler.h"
@@ skipping 259 matching lines @@
       Marking::MarkBlack(mark_bit);
       MemoryChunk::IncrementLiveBytesFromGC(heap_object, heap_object->Size());
       return true;
     }
     return false;
   }
 };
 
 void IncrementalMarking::IterateBlackObject(HeapObject* object) {
   if (IsMarking() && Marking::IsBlack(Marking::MarkBitFrom(object))) {
+    Page* page = Page::FromAddress(object->address());
+    if ((page->owner() != nullptr) && (page->owner()->identity() == LO_SPACE)) {
+      // IterateBlackObject requires us to visit the hole object.
+      page->ResetProgressBar();
+    }
     IncrementalMarkingMarkingVisitor::IterateBody(object->map(), object);
   }
 }
 
 class IncrementalMarkingRootMarkingVisitor : public ObjectVisitor {
  public:
   explicit IncrementalMarkingRootMarkingVisitor(
       IncrementalMarking* incremental_marking)
       : heap_(incremental_marking->heap()) {}
 
@@ skipping 950 matching lines @@
 void IncrementalMarking::IncrementIdleMarkingDelayCounter() {
   idle_marking_delay_counter_++;
 }
 
 
 void IncrementalMarking::ClearIdleMarkingDelayCounter() {
   idle_marking_delay_counter_ = 0;
 }
 }  // namespace internal
 }  // namespace v8