1 files changed, 24 insertions, 3 deletions
diff --git a/chromium/v8/src/heap/local-heap.h b/chromium/v8/src/heap/local-heap.h
index 31c66bc2be5..8406c39042d 100644
--- a/chromium/v8/src/heap/local-heap.h
+++ b/chromium/v8/src/heap/local-heap.h
@@ -48,6 +48,17 @@ class LocalHeap {
 
   ConcurrentAllocator* old_space_allocator() { return &old_space_allocator_; }
 
+  // Mark/Unmark linear allocation areas black. Used for black allocation.
+  void MarkLinearAllocationAreaBlack();
+  void UnmarkLinearAllocationArea();
+
+  // Give up linear allocation areas. Used for mark-compact GC.
+  void FreeLinearAllocationArea();
+
+  // Create filler object in linear allocation areas. Verifying requires
+  // iterable heap.
+  void MakeLinearAllocationAreaIterable();
+
  private:
   enum class ThreadState {
     // Threads in this state need to be stopped in a safepoint.
@@ -68,9 +79,6 @@ class LocalHeap {
 
   void EnterSafepoint();
 
-  void FreeLinearAllocationArea();
-  void MakeLinearAllocationAreaIterable();
-
   Heap* heap_;
 
   base::Mutex state_mutex_;
@@ -107,6 +115,19 @@ class ParkedScope {
   LocalHeap* local_heap_;
 };
 
+class ParkedMutexGuard {
+  base::Mutex* guard_;
+
+ public:
+  explicit ParkedMutexGuard(LocalHeap* local_heap, base::Mutex* guard)
+      : guard_(guard) {
+    ParkedScope scope(local_heap);
+    guard_->Lock();
+  }
+
+  ~ParkedMutexGuard() { guard_->Unlock(); }
+};
+
 }  // namespace internal
 }  // namespace v8