[heap] Sort declarations for MemoryChunk.

src/heap/spaces.cc

 // Copyright 2011 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/spaces.h"
 
 #include "src/base/bits.h"
 #include "src/base/platform/platform.h"
 #include "src/full-codegen/full-codegen.h"
 #include "src/heap/slots-buffer.h"
@@ skipping 410 matching lines @@
 
 
 NewSpacePage* NewSpacePage::Initialize(Heap* heap, Address start,
                                        SemiSpace* semi_space) {
   Address area_start = start + NewSpacePage::kObjectStartOffset;
   Address area_end = start + Page::kPageSize;
 
   MemoryChunk* chunk =
       MemoryChunk::Initialize(heap, start, Page::kPageSize, area_start,
                               area_end, NOT_EXECUTABLE, semi_space);
-  chunk->set_next_chunk(NULL);
-  chunk->set_prev_chunk(NULL);
   chunk->initialize_scan_on_scavenge(true);
   bool in_to_space = (semi_space->id() != kFromSpace);
   chunk->SetFlag(in_to_space ? MemoryChunk::IN_TO_SPACE
                              : MemoryChunk::IN_FROM_SPACE);
   DCHECK(!chunk->IsFlagSet(in_to_space ? MemoryChunk::IN_FROM_SPACE
                                        : MemoryChunk::IN_TO_SPACE));
   NewSpacePage* page = static_cast<NewSpacePage*>(chunk);
   heap->incremental_marking()->SetNewSpacePageFlags(page);
   return page;
 }
@@ skipping 33 matching lines @@
   chunk->mutex_ = NULL;
   chunk->available_in_small_free_list_ = 0;
   chunk->available_in_medium_free_list_ = 0;
   chunk->available_in_large_free_list_ = 0;
   chunk->available_in_huge_free_list_ = 0;
   chunk->non_available_small_blocks_ = 0;
   chunk->ResetLiveBytes();
   Bitmap::Clear(chunk);
   chunk->initialize_scan_on_scavenge(false);
   chunk->SetFlag(WAS_SWEPT);
+  chunk->set_next_chunk(nullptr);
+  chunk->set_prev_chunk(nullptr);
 
   DCHECK(OFFSET_OF(MemoryChunk, flags_) == kFlagsOffset);
   DCHECK(OFFSET_OF(MemoryChunk, live_byte_count_) == kLiveBytesOffset);
 
   if (executable == EXECUTABLE) {
     chunk->SetFlag(IS_EXECUTABLE);
   }
 
   return chunk;
 }
@@ skipping 2648 matching lines @@
     object->ShortPrint();
     PrintF("\n");
   }
   printf(" --------------------------------------\n");
   printf(" Marked: %x, LiveCount: %x\n", mark_size, LiveBytes());
 }
 
 #endif  // DEBUG
 }  // namespace internal
 }  // namespace v8