[heap] Evacuation for young generation

src/heap/spaces-inl.h

 // 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.
 
 #ifndef V8_HEAP_SPACES_INL_H_
 #define V8_HEAP_SPACES_INL_H_
 
 #include "src/heap/incremental-marking.h"
 #include "src/heap/spaces.h"
 #include "src/isolate.h"
@@ skipping 319 matching lines @@
     }
     case kFinishedState:
       return nullptr;
     default:
       break;
   }
   UNREACHABLE();
   return nullptr;
 }
 
-Page* FreeListCategory::page() {
-  return Page::FromAddress(reinterpret_cast<Address>(this));
+Page* FreeListCategory::page() const {
+  return Page::FromAddress(
+      reinterpret_cast<Address>(const_cast<FreeListCategory*>(this)));
+}
+
+Page* FreeList::GetPageForCategoryType(FreeListCategoryType type) {
+  return top(type) ? top(type)->page() : nullptr;
 }
 
 FreeList* FreeListCategory::owner() {
   return reinterpret_cast<PagedSpace*>(
              Page::FromAddress(reinterpret_cast<Address>(this))->owner())
       ->free_list();
 }
 
 bool FreeListCategory::is_linked() {
   return prev_ != nullptr || next_ != nullptr || owner()->top(type_) == this;
@@ skipping 269 matching lines @@
     other->allocation_info_.Reset(nullptr, nullptr);
     return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_SPACES_INL_H_