1 files changed, 64 insertions, 0 deletions
diff --git a/deps/v8/src/objects/free-space-inl.h b/deps/v8/src/objects/free-space-inl.h
new file mode 100644
index 0000000000..b71a469505
--- /dev/null
+++ b/deps/v8/src/objects/free-space-inl.h
@@ -0,0 +1,64 @@
+// Copyright 2018 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_OBJECTS_FREE_SPACE_INL_H_
+#define V8_OBJECTS_FREE_SPACE_INL_H_
+
+#include "src/objects/free-space.h"
+
+#include "src/heap/heap-inl.h"
+
+// Has to be the last include (doesn't have include guards):
+#include "src/objects/object-macros.h"
+
+namespace v8 {
+namespace internal {
+
+OBJECT_CONSTRUCTORS_IMPL(FreeSpace, HeapObject)
+
+SMI_ACCESSORS(FreeSpace, size, kSizeOffset)
+RELAXED_SMI_ACCESSORS(FreeSpace, size, kSizeOffset)
+
+int FreeSpace::Size() { return size(); }
+
+FreeSpace FreeSpace::next() {
+#ifdef DEBUG
+  Heap* heap = Heap::FromWritableHeapObject(*this);
+  Object free_space_map = heap->isolate()->root(RootIndex::kFreeSpaceMap);
+  DCHECK_IMPLIES(!map_slot().contains_value(free_space_map->ptr()),
+                 !heap->deserialization_complete() &&
+                     map_slot().contains_value(kNullAddress));
+#endif
+  DCHECK_LE(kNextOffset + kPointerSize, relaxed_read_size());
+  return FreeSpace::unchecked_cast(*ObjectSlot(address() + kNextOffset));
+}
+
+void FreeSpace::set_next(FreeSpace next) {
+#ifdef DEBUG
+  Heap* heap = Heap::FromWritableHeapObject(*this);
+  Object free_space_map = heap->isolate()->root(RootIndex::kFreeSpaceMap);
+  DCHECK_IMPLIES(!map_slot().contains_value(free_space_map->ptr()),
+                 !heap->deserialization_complete() &&
+                     map_slot().contains_value(kNullAddress));
+#endif
+  DCHECK_LE(kNextOffset + kPointerSize, relaxed_read_size());
+  ObjectSlot(address() + kNextOffset).Relaxed_Store(next);
+}
+
+FreeSpace FreeSpace::cast(HeapObject o) {
+  SLOW_DCHECK(!Heap::FromWritableHeapObject(o)->deserialization_complete() ||
+              o->IsFreeSpace());
+  return bit_cast<FreeSpace>(o);
+}
+
+FreeSpace FreeSpace::unchecked_cast(const Object o) {
+  return bit_cast<FreeSpace>(o);
+}
+
+}  // namespace internal
+}  // namespace v8
+
+#include "src/objects/object-macros-undef.h"
+
+#endif  // V8_OBJECTS_FREE_SPACE_INL_H_