- Pass the knowledge whether the old GC is compacting to the GC prologue and ...

src/v8threads.h

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 56 matching lines @@
 
 class ThreadManager : public AllStatic {
  public:
   static void Lock();
   static void Unlock();
 
   static void ArchiveThread();
   static bool RestoreThread();
 
   static void Iterate(ObjectVisitor* v);
-  static void MarkCompactPrologue();
-  static void MarkCompactEpilogue();
+  static void MarkCompactPrologue(bool is_compacting);
+  static void MarkCompactEpilogue(bool is_compacting);
   static bool IsLockedByCurrentThread() { return mutex_owner_.IsSelf(); }
  private:
   static void EagerlyArchiveThread();
 
   static Mutex* mutex_;
   static ThreadHandle mutex_owner_;
   static ThreadHandle lazily_archived_thread_;
   static ThreadState* lazily_archived_thread_state_;
 };
 
@@ skipping 21 matching lines @@
 
   bool keep_going_;
   int sleep_ms_;
 
   static ContextSwitcher* singleton_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8THREADS_H_